<PAGE>   1
                                                                     Exhibit 1.2



                              DEL WEBB CORPORATION

                                       AND

                         BANK OF MONTREAL TRUST COMPANY,

                                     TRUSTEE

                                  $200,000,000

                 10 1/4% Senior Subordinated Debentures due 2010

                                    INDENTURE

                          Dated as of February 18, 1999
<PAGE>   2
                             CROSS-REFERENCE TABLE*

<TABLE>
<CAPTION>
SECTION                                                                            INDENTURE
-------                                                                            ---------
<S>                                                                             <C>
310(a)(1)7.10..........................................................               7.10
   (a)(2)..............................................................               7.10
   (a)(3)..............................................................               N.A.
   (a)(4)..............................................................               N.A.
   (b).................................................................         7.08; 7.10; 10.02
   (c).................................................................               N.A.
311(a).................................................................               7.11
   (b).................................................................               7.11
   (c).................................................................               N.A.
312(a).................................................................               2.05
   (b).................................................................               10.03
   (c).................................................................               10.03
313(a).................................................................               7.06
   (b)(1)..............................................................               N.A.
   (b)(2)..............................................................               7.06
   (c).................................................................         7.06; 10.02
   (d).................................................................               7.06
314(a).................................................................         4.02; 10.02
   (b).................................................................               N.A.
   (c)(1)..............................................................               10.04
   (c)(2)..............................................................               10.04
   (c)(3)..............................................................               N.A.
   (d).................................................................               N.A.
   (e).................................................................               10.05
   (f).................................................................               N.A.
315(a).................................................................               7.01(b)
   (b).................................................................         7.05; 10.02
   (c).................................................................               7.01(a)
   (d).................................................................               7.01(c)
   (e).................................................................               6.11
316(a)(last sentence)..................................................               2.09
   (a)(1)(A)...........................................................               6.05
   (a)(1)(B)...........................................................               6.04
</TABLE>


*        This Cross-Reference Table is not part of the Indenture.


                                        i
<PAGE>   3
<TABLE>
<S>                                                                                   <C>
   (a)(2)..............................................................               N.A.
   (b).................................................................               6.07
317(a)(1)..............................................................               6.08
   (a)(2)..............................................................               6.09
   (b).................................................................               2.04
318(a).................................................................               10.01
</TABLE>


N.A. means not applicable.


                                       ii
<PAGE>   4
                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                      PAGE
                                                                                                      ----
<S>                                                                                                   <C>
                                    ARTICLE 1
                                   DEFINITIONS

SECTION 1.01      DEFINITIONS.......................................................................     1
         "9% Debentures"............................................................................     1
         "9 3/4% Debentures due 2003"...............................................................     1
         "9 3/4% Debentures due 2008"...............................................................     1
         "9 3/8% Debentures"........................................................................     1
         "Acquired Indebtedness"....................................................................     1
         "Affiliate"................................................................................     2
         "Agent"....................................................................................     2
         "Asset Sale"...............................................................................     2
         "Board of Directors".......................................................................     2
         "Capital Stock"............................................................................     2
         "Capitalized Lease Obligations"............................................................     2
         "Change of Control"........................................................................     3
         "Common Equity"............................................................................     3
         "Company"..................................................................................     3
         "Consolidated Cash Flow Available for Fixed Charges".......................................     3
         "Consolidated Fixed Charge Coverage Ratio".................................................     4
         "Consolidated Income Tax Expense"..........................................................     4
         "Consolidated Interest Expense"............................................................     4
         "Consolidated Net Earnings"................................................................     4
         "Consolidated Tangible Net Worth"..........................................................     6
         "Default"..................................................................................     6
         "Depository"...............................................................................     6
         "Discontinued Operations"..................................................................     6
         "Disqualified Stock".......................................................................     6
         "DTC"......................................................................................     7
         "Excess Asset Lien"........................................................................     7
         "Exchange Act".............................................................................     7
         "Excluded Debt"............................................................................     7
         "Foothills"................................................................................     7
         "GAAP".....................................................................................     7
         "Global Security...........................................................................     7
         "Guarantee"................................................................................     7
</TABLE>


                                       iii
<PAGE>   5
                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                      PAGE
                                                                                                      ----
<S>                                                                                                   <C>
         "Holder" or "Securityholder"...............................................................     8
         "Indebtedness".............................................................................     8
         "Indenture"................................................................................     9
         "Intangible Assets"........................................................................     9
         "Investments"..............................................................................     9
         "Lien".....................................................................................     9
         "Material Subsidiary"......................................................................     9
         "Non-Recourse Indebtedness"................................................................    10
         "Officers' Certificate"....................................................................    11
         "Opinion of Counsel".......................................................................    11
         "Person"...................................................................................    11
         "principal"................................................................................    11
         "redemption date"..........................................................................    11
         "redemption price".........................................................................    11
         "Refinancing Indebtedness".................................................................    11
         "Released Asset Value".....................................................................    12
         "repurchaseable"...........................................................................    12
         "Restricted Payment".......................................................................    12
         "Restricted Subsidiaries"..................................................................    13
         "SEC"......................................................................................    13
         "Securities"...............................................................................    13
         "subsidiary"...............................................................................    13
         "Sun City Las Vegas".......................................................................    13
         "Sun City Palm Desert".....................................................................    13
         "Sun City Tucson"..........................................................................    14
         "Sun City West"............................................................................    14
         "TIA"......................................................................................    14
         "Trustee"..................................................................................    14
         "Trust Officer"............................................................................    14
         "Unrestricted Subsidiaries"................................................................    14
         "Weighted Average Life to Maturity"........................................................    15
         "Wholly Owned Restricted Subsidiary".......................................................    15
         "Wholly Owned Subsidiary"..................................................................    15
SECTION 1.02      OTHER DEFINITIONS.................................................................    16
</TABLE>


                                       iv
<PAGE>   6
                                TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                                                                      PAGE
                                                                                                      ----
<S>                                                                                                   <C>
SECTION 1.03      INCORPORATION BY REFERENCE OF TRUST
                           INDENTURE ACT............................................................    16
SECTION 1.04      RULES OF CONSTRUCTION.............................................................    17

                                    ARTICLE 2
                                 THE SECURITIES

SECTION 2.01      FORM AND DATING...................................................................    17
SECTION 2.02      EXECUTION AND AUTHENTICATION......................................................    18
SECTION 2.03      REGISTRAR AND PAYING AGENT........................................................    19
SECTION 2.04      PAYING AGENT TO HOLD MONEY IN TRUST...............................................    20
SECTION 2.05      SECURITYHOLDER LISTS..............................................................    20
SECTION 2.06      TRANSFER AND EXCHANGE.............................................................    21
SECTION 2.07      REPLACEMENT SECURITIES............................................................    23
SECTION 2.08      OUTSTANDING SECURITIES............................................................    23
SECTION 2.09      WHEN TREASURY SECURITIES DISREGARDED..............................................    24
SECTION 2.10      TEMPORARY SECURITIES..............................................................    24
SECTION 2.11      CANCELLATION......................................................................    24
SECTION 2.12      DEFAULTED INTEREST................................................................    25
SECTION 2.13      CUSIP NUMBER......................................................................    25

                                    ARTICLE 3
                                   REDEMPTION

SECTION 3.01      NOTICES TO TRUSTEE................................................................    25
SECTION 3.02      SELECTION OF SECURITIES TO BE REDEEMED............................................    26
SECTION 3.03      NOTICE OF REDEMPTION..............................................................    26
SECTION 3.04      EFFECT OF NOTICE OF REDEMPTION....................................................    27
SECTION 3.05      DEPOSIT OF REDEMPTION PRICE.......................................................    27
SECTION 3.06      SECURITIES REDEEMED IN PART.......................................................    27

                                    ARTICLE 4
                                    COVENANTS

SECTION 4.01      PAYMENT OF SECURITIES.............................................................    28
</TABLE>


                                        v
<PAGE>   7
                                TABLE OF CONTENTS

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<CAPTION>
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<S>                                                                                                   <C>
SECTION 4.02      SEC REPORTS.......................................................................    28
SECTION 4.03      COMPLIANCE CERTIFICATE............................................................    29
SECTION 4.04      MAINTENANCE OF OFFICE OR AGENCY...................................................    30
SECTION 4.05      RESTRICTIONS ON ADDITIONAL INDEBTEDNESS...........................................    30
SECTION 4.06      RESTRICTIONS ON DIVIDENDS AND OTHER PAYMENTS......................................    31
SECTION 4.07      LIMITATIONS ON RESTRICTIONS ON DISTRIBUTIONS FROM RESTRICTED SUBSIDIARIES.........    33
SECTION 4.08      LIMITATIONS ON TRANSACTIONS WITH AFFILIATES.......................................    34
SECTION 4.09      CONTINUED EXISTENCE...............................................................    35
SECTION 4.10      TAXES.............................................................................    35
SECTION 4.11      LIMITATION ON RANKING OF FUTURE INDEBTEDNESS......................................    35
SECTION 4.12      STAY, EXTENSION AND USURY LAWS....................................................    36
SECTION 4.13      INVESTMENT COMPANY ACT............................................................    36
SECTION 4.14      CHANGE OF CONTROL.................................................................    36
SECTION 4.15      MAINTENANCE OF CONSOLIDATED TANGIBLE NET WORTH....................................    38

                                    ARTICLE 5
                                   SUCCESSORS

SECTION 5.01      WHEN THE COMPANY MAY MERGE, ETC...................................................    41
SECTION 5.02      SUCCESSOR CORPORATION SUBSTITUTED.................................................    42
SECTION 5.03      PURCHASE OPTION ON CHANGE OF CONTROL..............................................    43

                                    ARTICLE 6
                              DEFAULTS AND REMEDIES

SECTION 6.01      EVENTS OF DEFAULT.................................................................    43
SECTION 6.02      ACCELERATION......................................................................    45
SECTION 6.03      OTHER REMEDIES....................................................................    46
SECTION 6.04      WAIVER OF PAST DEFAULTS...........................................................    46
SECTION 6.05      CONTROL BY MAJORITY...............................................................    46
</TABLE>


                                       vi
<PAGE>   8
                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
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                                                                                                      ----
<S>                                                                                                   <C>
SECTION 6.06      LIMITATION ON SUITS...............................................................    47
SECTION 6.07      RIGHTS OF HOLDERS TO RECEIVE PAYMENT..............................................    47
SECTION 6.08      COLLECTION SUIT BY TRUSTEE........................................................    47
SECTION 6.09      TRUSTEE MAY FILE PROOFS OF CLAIM..................................................    48
SECTION 6.10      PRIORITIES........................................................................    48
SECTION 6.11      UNDERTAKING FOR COSTS.............................................................    48

                                    ARTICLE 7
                                   THE TRUSTEE

SECTION 7.01      DUTIES OF THE TRUSTEE.............................................................    49
SECTION 7.02      RIGHTS OF THE TRUSTEE.............................................................    50
SECTION 7.03      INDIVIDUAL RIGHTS OF THE TRUSTEE..................................................    51
SECTION 7.04      TRUSTEE'S DISCLAIMER..............................................................    51
SECTION 7.05      NOTICE OF DEFAULTS................................................................    51
SECTION 7.06      REPORTS BY THE TRUSTEE TO HOLDERS.................................................    51
SECTION 7.07      COMPENSATION AND INDEMNITY........................................................    52
SECTION 7.08      REPLACEMENT OF THE TRUSTEE........................................................    53
SECTION 7.09      SUCCESSOR TRUSTEE BY MERGER, ETC..................................................    54
SECTION 7.10      ELIGIBILITY; DISQUALIFICATION.....................................................    54
SECTION 7.11      PREFERENTIAL COLLECTION OF CLAIMS AGAINST COMPANY.................................    54

                                    ARTICLE 8
                     SATISFACTION AND DISCHARGE OF INDENTURE

SECTION 8.01      TERMINATION OF COMPANY'S OBLIGATIONS..............................................    55
SECTION 8.02      APPLICATION OF TRUST MONEY........................................................    58
SECTION 8.03      REPAYMENT TO COMPANY..............................................................    59
SECTION 8.04      REINSTATEMENT.....................................................................    59

                                    ARTICLE 9
                                   AMENDMENTS

SECTION 9.01      WITHOUT THE CONSENT OF HOLDERS....................................................    59
</TABLE>


                                       vii
<PAGE>   9
                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
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<S>                                                                                                   <C>
SECTION 9.02      WITH THE CONSENT OF HOLDERS.......................................................    60
SECTION 9.03      COMPLIANCE WITH THE TRUST INDENTURE ACT...........................................    61
SECTION 9.04      REVOCATION AND EFFECT OF CONSENTS.................................................    61
SECTION 9.05      NOTATION ON OR EXCHANGE OF SECURITIES.............................................    62
SECTION 9.06      THE TRUSTEE PROTECTED.............................................................    62

                                   ARTICLE 10
                               GENERAL PROVISIONS

SECTION 10.01     TRUST INDENTURE ACT CONTROLS......................................................    62
SECTION 10.02     NOTICES...........................................................................    63
SECTION 10.03     COMMUNICATION BY HOLDERS WITH OTHER HOLDERS.......................................    63
SECTION 10.04     CERTIFICATE AND OPINION AS TO CONDITIONS PRECEDENT................................    63
SECTION 10.05     STATEMENTS REQUIRED IN CERTIFICATE OR OPINION.....................................    64
SECTION 10.06     RULES BY TRUSTEE AND AGENTS.......................................................    64
SECTION 10.07     LEGAL HOLIDAYS....................................................................    64
SECTION 10.08     NO RECOURSE AGAINST OTHERS........................................................    65
SECTION 10.09     COUNTERPARTS......................................................................    65
SECTION 10.10     OTHER PROVISIONS..................................................................    65
SECTION 10.11     GOVERNING LAW.....................................................................    66
SECTION 10.12     NO ADVERSE INTERPRETATION OF OTHER AGREEMENTS.....................................    66
SECTION 10.13     SUCCESSORS........................................................................    66
SECTION 10.14     SEVERABILITY......................................................................    67
SECTION 10.15     TABLE OF CONTENTS, HEADINGS, ETC..................................................    67

                                   ARTICLE 11
                                  SUBORDINATION

SECTION 11.01     AGREEMENT TO SUBORDINATE..........................................................    67
SECTION 11.02     CERTAIN DEFINITIONS...............................................................    67
SECTION 11.03     LIQUIDATION; DISSOLUTION; BANKRUPTCY..............................................    68
</TABLE>


                                      viii
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                                TABLE OF CONTENTS
<TABLE>
<CAPTION>
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SECTION 11.04     DEFAULT ON DESIGNATED SENIOR DEBT.................................................    69
SECTION 11.05     ACCELERATION OF SECURITIES........................................................    70
SECTION 11.06     WHEN DISTRIBUTIONS MUST BE PAID OVER..............................................    70
SECTION 11.07     NOTICE BY THE COMPANY.............................................................    71
SECTION 11.08     SUBROGATION.......................................................................    71
SECTION 11.09     RELATIVE RIGHTS...................................................................    71
SECTION 11.10     SUBORDINATION MAY NOT BE IMPAIRED BY THE COMPANY..................................    72
SECTION 11.11     DISTRIBUTION OR NOTICE TO THE REPRESENTATIVE......................................    72
SECTION 11.12     RIGHTS OF THE TRUSTEE AND PAYING AGENT............................................    72
SECTION 11.13     NO FIDUCIARY DUTY TO HOLDERS OF SENIOR DEBT.......................................    73
</TABLE>


                                       ix
<PAGE>   11
         This Indenture, dated as of February 18, 1999, is between Del Webb
Corporation, a Delaware corporation (hereinafter the "Company" as more fully
set forth in Section 1.01), and Bank of Montreal Trust Company, a New York
banking corporation (hereinafter the "Trustee" as more fully set forth in
Section 1.01).

         The Company has duly authorized an aggregate of $200,000,000 principal
amount of its 10 1/4% Senior Subordinated Debentures due 2010 (the "Securities")
and to provide therefor the Company has duly authorized the execution and
delivery of this Indenture. Each party agrees as follows for the benefit of the
other party and for the equal and ratable benefit of the Holders of the
Securities.


                                    ARTICLE 1

                                   DEFINITIONS

SECTION 1.01      DEFINITIONS.

         "9% Debentures" means the Company's 9% Senior Subordinated Debentures
due 2006.

         "9 3/4% Debentures due 2003" means the Company's 9 3/4% Senior
Subordinated Debentures due 2003.

         "9 3/4% Debentures due 2008" means the Company's 9 3/4% Senior
Subordinated Debentures due 2008.

         "9 3/8% Debentures" means the Company's 9 3/8% Senior Subordinated
Debentures due 2009.

         "Acquired Indebtedness" means (i) with respect to any Person that
becomes a subsidiary of the Company after the date hereof, Indebtedness of such
Person and its subsidiaries existing at the time such Person becomes a
subsidiary of the Company that was not incurred in connection with, or in
contemplation of, such Person becoming a subsidiary of the Company and (ii) with
respect to the Company or any of its subsidiaries, any Indebtedness assumed by
the Company or any of its subsidiaries in connection with the acquisition of an
asset from another Person that was not incurred by such other Person in
connection with, or in contemplation of, such acquisition.


                                       1
<PAGE>   12
         "Affiliate" of any Person means any Person directly or indirectly
controlling or controlled by, or under direct or indirect common control with,
the referent Person. For purposes of this definition, control of a Person shall
mean the power to direct the management and policies of such Person, directly or
indirectly, whether through the ownership of voting securities, by contract or
otherwise. Notwithstanding the foregoing, the term "Affiliate" shall not
include, with respect to the Company or any Wholly Owned Subsidiary of the
Company, any Wholly Owned Subsidiary of the Company.

         "Agent" means any Registrar, Paying Agent, co-registrar or co-paying
agent; when reference is made to the Registrar herein, such reference shall
include each co-registrar; and when reference is made to the Paying Agent
herein, such reference shall include each co-paying agent.

         "Asset Sale" for any Person means the sale, lease, conveyance or other
disposition (including, without limitation, by merger, consolidation, operation
of law or otherwise) of any assets of the Company or its Restricted Subsidiaries
in any transaction, or series of related transactions, outside of the Company's
then ordinary course of business, where the proceeds from any such sale, lease,
conveyance or other disposition, whether in a transaction or series of related
transactions, exceeds $1,000,000.

         "Board of Directors" means the Board of Directors of the Company or any
authorized committee of the Board of Directors.

         "Capital Stock" of any Person means any and all shares, rights to
purchase, warrants or options (whether or not currently exercisable),
participations or other equivalents of or interests in (however designated) the
equity (which includes, but is not limited to, common stock, preferred stock and
partnership and joint venture interests) of such Person (excluding any debt
securities that are convertible into, or exchangeable for, such equity).

         "Capitalized Lease Obligations" of any Person means the obligations of
such Person to pay rent or other amounts under a lease that is required to be
capitalized for financial reporting purposes in accordance with GAAP, and the
amount of such obligation shall be the capitalized amount thereof determined in
accordance with GAAP.


                                       2
<PAGE>   13
         "Change of Control" means any of the following: (i) the sale, lease,
conveyance or other disposition of all or substantially all of the Company's
assets as an entirety or substantially as an entirety to any Person or "group"
(within the meaning of Section 13(d)(3) of the Exchange Act) in one or a series
of transactions, provided that a transaction where the holders of all classes of
Common Equity of the Company immediately prior to such transaction own, directly
or indirectly, 50 percent or more of all classes of Common Equity of such Person
or group immediately after such transactions shall not be a change of control;
(ii) the acquisition by the Company and/or any of its subsidiaries of 50 percent
or more of the aggregate voting power of all classes of Common Equity of the
Company in one transaction or a series of related transactions; (iii) the
liquidation or dissolution of the Company, provided that a liquidation or
dissolution of the Company which is part of a transaction or series of related
transactions that does not constitute a change of control under the "provided"
clause of clause (i) above shall not constitute a change of control under this
clause (iii); or (iv) any transaction or series of transactions (as a result of
a tender offer, merger, consolidation or otherwise) that results in, or that is
in connection with, (a) any Person, including a "group" (within the meaning of
Section 13(d)(3) of the Exchange Act) that includes such Person, acquiring
"beneficial ownership" (as defined in Rule 13d-3 under the Exchange Act),
directly or indirectly, of 50 percent or more of the aggregate voting power of
all classes of Common Equity of the Company or any Person that possesses
"beneficial ownership" (as defined in Rule 13d-3 under the Exchange Act),
directly or indirectly, of 50 percent or more of the aggregate voting power of
all classes of Common Equity of the Company, or (b) less than 50 percent
(measured by the aggregate voting power of all classes) of the Company's Common
Equity being registered under Section 12(b) or 12(g) of the Exchange Act.

         "Common Equity" of any Person means all Capital Stock of such Person
that is generally entitled to (i) vote in the election of directors of such
Person or (ii) if such Person is not a corporation, vote or otherwise
participate in the selection of the governing body, partners, managers or others
that will control the management and policies of such Person.

         "Company" means the party named as such above until a successor
replaces it in accordance with Article 5 and thereafter means the successor.

         "Consolidated Cash Flow Available for Fixed Charges" of the Company
means for any period the amounts for such period of (i) Consolidated Net
Earnings, plus (ii) Consolidated Income Tax Expense, plus (iii) amortization of
capitalized interest included in cost of sales, plus (iv) allocation of noncash
costs to cost of sales, excluding interest, plus (v) to the extent not otherwise
included, other noncash


                                       3
<PAGE>   14
charges to earnings, net, reduced by (vi) noncash earnings included in
Consolidated Net Earnings; all as determined on a consolidated basis for the
Company and its Restricted Subsidiaries in accordance with GAAP.

         "Consolidated Fixed Charge Coverage Ratio" of the Company means, with
respect to any determination date, the ratio of (i) Consolidated Cash Flow
Available for Fixed Charges of the Company for the prior four full fiscal
quarters for which financial results have been reported immediately preceding
the determination date to (ii) the aggregate Consolidated Interest Expense of
the Company for the prior four full fiscal quarters for which financial results
have been reported immediately preceding the determination date.

         "Consolidated Income Tax Expense" of the Company for any period means
the provision for taxes based on earnings and profits of the Company and its
Restricted Subsidiaries (but only to the extent such income or profits were
included in computing the Consolidated Net Earnings of the Company for such
period), deter mined on a consolidated basis consistent with the Company's past
practices under Statement of Financial Accounting Standards No. 96.

         "Consolidated Interest Expense" of the Company for any period means the
aggregate amount of interest which, in conformity with GAAP, would be set
opposite the caption "interest expense" or any like caption on the consolidated
statement of earnings of the Company and its Restricted Subsidiaries (including,
but not limited to, imputed interest included on Capitalized Lease Obligations,
all commissions, discounts and other fees and charges owed with respect to
letters of credit and bankers' acceptance financing, the net costs associated
with hedging obligations, amortization of other financing fees and expenses, the
interest portion of any deferred payment obligation, amortization of discount or
premium, if any, and all other noncash interest expense other than interest
amortized to cost of sales) and includes, without duplication (including
duplication of the foregoing items), all capitalized interest and all interest
incurred in connection with Investments in Discontinued Operations for such
period and interest actually paid by the Company or a Restricted Subsidiary
under any Guarantee of Indebtedness (including a Guarantee of principal,
interest or any combination thereof) of any other Person, all determined on a
consolidated basis in accordance with GAAP.

         "Consolidated Net Earnings" of the Company for any period means the net
income (or loss) of the Company and its Restricted Subsidiaries for such period
determined on a consolidated basis in accordance with GAAP (except that income
taxes shall be determined on a basis consistent with the Company's past
practices


                                       4
<PAGE>   15
under Statement of Financial Accounting Standards No. 96); provided that there
shall be excluded from such net income (to the extent otherwise included
therein), without duplication: (i) the net income (or loss) of any Person (other
than a Restricted Subsidiary of the Company) in which any Person other than the
Company has an ownership interest, except to the extent that any such income has
actually been received by the Company or any of its Wholly Owned Restricted
Subsidiaries in the form of dividends or similar distributions during such
period; (ii) except to the extent includable in the consolidated net income of
the Company pursuant to the foregoing clause (i), the net income (or loss) of
any Person that accrued prior to the date that (a) such Person becomes a
Restricted Subsidiary of the Company or is merged into or consolidated with the
Company or any of its Restricted Subsidiaries or (b) the assets of such Person
are acquired by the Company or any of its Restricted Subsidiaries; (iii) the net
earnings of any Restricted Subsidiary of the Company (other than a Wholly Owned
Restricted Subsidiary) to the extent that (but only so long as) the declaration
or payment of dividends or similar distributions by such Restricted Subsidiary
of those earnings is not permitted by operation of the terms of its charter or
any agreement, instrument, judgment, decree, order, statute, rule or
governmental regulation applicable to the Restricted Subsidiary during such
period (and when and to the extent such dividend or other distribution is
permitted, such income not previously recognized shall then be recognized, in
the period when such dividend or other distribution was permitted and to the
extent of such permission); (iv) any gain (but not loss), together with any
related provisions for taxes on any such gain, realized during such period by
the Company or any of its Restricted Subsidiaries upon (a) the acquisition of
any securities, or the extinguishment of any Indebtedness, of the Company or any
of its Restricted Subsidiaries, or (b) any Asset Sale by the Company or any of
its Restricted Subsidiaries; (v) any extraordinary gain (but not extraordinary
loss), together with any related provision for taxes on any such extraordinary
gain, realized by the Company or any of its Restricted Subsidiaries during such
period; and (vi) in the case of a successor to the Company by consolidation,
merger or transfer of its assets, any earnings of the successor prior to such
merger, consolidation or transfer of assets; provided, further, that there shall
be included in such Consolidated Net Earnings (to the extent not otherwise
included therein) the net earnings of any Unrestricted Subsidiary of the Company
to the extent such net earnings are received by the Company or a Wholly Owned
Restricted Subsidiary in the form of cash dividends or other cash distributions
from such Unrestricted Subsidiary; provided, further, that, in calculating
Consolidated Net Earnings, the Company shall be entitled to take into
consideration the tax benefits associated with any loss, but only when and to
the extent such tax benefits are recognized by the Company; provided, further,
that solely for purposes of calculating the Consolidated Fixed Charge Coverage
Ratio under Section 4.05, Consolidated Net Earnings shall exclude (x) any
noncash losses on


                                       5
<PAGE>   16
valuation reserves relating to Discontinued Operations, Foothills, the
5,661-acre tract of land referred to under "Business and Properties -- Other
Real Estate Activities --Other" in the Annual Report of the Company on Form 10-K
for the year ended June 30, 1993 or the 77-acre tract of land in Fort Collins,
Colorado, each of which is owned by subsidiaries of the Company on the date
hereof, except to the extent the Company has made Investments in the particular
Discontinued Operation, Foothills or such other tracts of land in question since
February 11, 1994, and (y) any noncash losses, whether or not extraordinary,
incurred in connection with the issuance of Capital Stock of the Company (other
than Disqualified Stock) in exchange for Indebtedness of the Company or its
Wholly Owned Restricted Subsidiaries since February 11, 1994.

         "Consolidated Tangible Net Worth" of the Company as of any date means
the stockholders' equity (including any preferred stock that is classified as
equity under GAAP, other than Disqualified Stock) of the Company and its
Restricted Subsidiaries on a consolidated basis at such date, as determined in
accordance with GAAP, less (i) all write-ups subsequent to December 31, 1992 in
the book value of any asset owned by the Company or any of its Restricted
Subsidiaries and (ii) Intangible Assets reflected on the consolidated balance
sheet of the Company and its Restricted Subsidiaries as of such date.

         "Default" means any event, act or condition that is, or after notice or
the passage of time or both would be, an Event of Default.

         "Depository" means, with respect to Securities issuable in whole or in
part in the form of one or more Global Securities, a clearing agency registered
under the Exchange Act that is designated to act as Depository for such
Securities as contemplated by this Indenture.

         "Discontinued Operations" means with respect to the Company those
operations of the Company and its subsidiaries which were classified as
"discontinued operations" in the consolidated financial statements of the
Company and its subsidiaries as of December 31, 1992.

         "Disqualified Stock" means any Capital Stock that, by its terms (or by
the terms of any security into which it is convertible or for which it is
exchangeable), or upon the happening of any event, matures or is mandatorily
redeemable, pursuant to a sinking fund obligation or otherwise, or is redeemable
at the option of the holder thereof, in whole or in part, on or prior to the
final maturity date of the Securities.


                                       6
<PAGE>   17
         "DTC" has the meaning set forth in Section 2.02 hereof.

         "Excess Asset Lien" means a Lien on assets or property securing
Non-Recourse Indebtedness incurred pursuant to clause (iv) of Section 4.05 to
the extent the aggregate undepreciated and unamortized cost basis of such assets
or property exceeds the outstanding principal amount of such Non-Recourse
Indebted ness. The amount of a Restricted Payment based upon the grant of an
Excess Asset Lien is the amount by which the undepreciated and unamortized cost
basis of such assets or property at the date of grant of the Lien exceeds the
outstanding principal amount of such Non-Recourse Indebtedness.

         "Exchange Act" means the Securities Exchange Act of 1934, as amended,
or any successor statute.

         "Excluded Debt" means any Indebtedness of the Company which is (i)
subordinated (subject to the rights of holders of Senior Debt) in right of
payment to the Securities (upon liquidation or otherwise) at least to the extent
that the Securities are subordinated to Senior Debt and (ii) matures after, and
is not redeemable mandatorily or at the option of the holder thereof prior to,
the final maturity date of the Securities.

         "Foothills" means Del E. Webb Foothills Corporation, the successor to
an Arizona general partnership organized on January 31, 1986 for the purpose of
acquiring and developing certain real property in Phoenix, Arizona (and its
successors).

         "GAAP" means generally accepted accounting principles set forth in the
opinions and pronouncements of the Accounting Principles Board of the American
Institute of Certified Public Accountants and statements and pronouncements of
the Financial Accounting Standards Board, in each case as in effect on the date
hereof.

         "Global Security" means a Security that evidences all or part of the
Securities and is authenticated and delivered to, and registered in the name of,
the Depository for such Securities or a nominee thereof.

         "Guarantee" with respect to any obligation means: (i) any direct or
indirect guarantee; (ii) any direct or indirect agreement or arrangement,
contingent or other wise, to purchase, repurchase or otherwise acquire any part
or all of such obligation; or (iii) any other direct or indirect agreement or
arrangement the practical effect of


                                       7
<PAGE>   18
which is to assure the payment or performance (or payment of damages in the
event of nonperformance) of all or any part of such obligation.

         "Holder" or "Securityholder" means a person in whose name a Security is
registered in the Registrar's books (if there is more than one Registrar and the
Trustee is a Registrar, as registered in the books kept by the Trustee in its
capacity as Registrar).

         "Indebtedness" of any Person at any date means, without duplication,
(i) all indebtedness of such Person for borrowed money (whether or not the
recourse of the lender is to the whole of the assets of such Person or only to a
portion thereof), (ii) all obligations of such Person evidenced by bonds,
debentures, notes or other similar instruments, (iii) all obligations of such
Person in respect of letters of credit or other similar instruments (or
reimbursement obligations with respect thereto), other than standby letters of
credit incurred by such Person in the ordinary course of business; (iv) all
obligations of such Person to pay the deferred and unpaid purchase price of
property or services, except trade payables and accrued expenses incurred in the
ordinary course of business, (v) all Capitalized Lease Obligations of such
Person, (vi) all Indebtedness of others secured by a Lien (other than assessment
district and similar Liens arising in connection with municipal financings) on
any asset of such Person, whether or not such Indebtedness is assumed by such
Person and (vii) all Indebted ness of others Guaranteed by such Person to the
extent of such Guarantee. The amount of Indebtedness of any Person at any date
shall be (a) the outstanding balance at such date of all unconditional
obligations described above, (b) the maximum liability of such Person for any
contingent obligations under clause (iii) above and (c) in the case of clause
(vi), the lesser of (A) the fair market value of any asset subject to a Lien
securing the Indebtedness of others on the date that the Lien attaches and (B)
the amount of the Indebtedness secured. To the extent such Person Guarantees the
obligation of another Person to pay interest on indebtedness owed by such other
Person, then a designated percentage of the interest Guaranteed or the principal
amount of the underlying Indebtedness, as the case may be, shall be deemed
Indebted ness of the referent Person. For purposes of this definition, the
amount of such deemed Indebtedness of the referent Person shall be equal to the
lesser of: (a) the aggregate principal amount of the underlying Indebtedness
relating to such interest Guarantee or (b) the aggregate amount of interest due
and payable over the term of such Indebtedness (or the term of the Securities,
if shorter) determined based upon the rate of interest in effect as of the date
of such determination, together with the maximum prepayment premium or penalty
which could become due or payable with respect to such Indebtedness if such
Indebtedness was prepaid prior to the maturity of the Securities.
Notwithstanding the foregoing, Indebtedness shall not include (v)


                                       8
<PAGE>   19
Indebtedness which has been defeased or discharged, (w) Indebtedness in respect
of interest rate swap or similar agreements intended to protect against
fluctuations in interest rates, or foreign currency hedge, exchange or similar
agreements intended to protect against fluctuations in currency exchange rates,
(x) Indebtedness arising from the honoring by a bank or other financial
institution of a check, draft or similar instrument drawn against insufficient
funds in the ordinary course of business, provided that such Indebtedness is
extinguished within five Business Days of its incurrence, (y) letters of credit
provided in the ordinary course of business securing performance (and not
financial) obligations and (z) performance, completion, surety and similar bonds
and similar purpose undertakings provided in the ordinary course of business.

         "Indenture" means this Indenture as amended or supplemented from time
to time.

         "Intangible Assets" of the Company means all unamortized debt discount
and expense, unamortized deferred charges, goodwill, patents, trademarks,
service marks, trade names, copyrights, write-ups of assets over their carrying
value at December 31, 1992 or the date of acquisition, if acquired subsequent
thereto, and all other items which would be treated as intangibles on the
consolidated balance sheet of the Company and its Restricted Subsidiaries
prepared in accordance with GAAP.

         "Investments" of any Person means (i) all investments (assets net of
liabilities) by such Person in any other Person in the form of loans, advances
or capital contributions, (ii) all Guarantees of Indebtedness or other
obligations of any other Person by such Person, (iii) all purchases (or other
acquisitions for consideration) by such Person of Indebtedness, Capital Stock or
other securities of any other Person and (iv) all other items that would be
classified as investments (including, without limitation, purchases of assets
outside the ordinary course of business) on a balance sheet of such Person
prepared in accordance with GAAP.

         "Lien" means, with respect to any asset, any mortgage, deed of trust,
pledge, lien, charge, security interest, adverse claim affecting title or
resulting in a charge against such asset, or encumbrance of any kind in respect
of such asset, whether or not filed, recorded or otherwise perfected under
applicable law (including any conditional sale or other title retention
agreement, any lease in the nature thereof, any option or other agreement to
sell).

         "Material Subsidiary" means (i) any subsidiary of the Company that
holds, directly or indirectly, a material amount of the assets of Sun City West,
Sun City Las


                                       9
<PAGE>   20
Vegas, Sun City Palm Desert or Sun City Tucson or (ii) any other subsidiary of
the Company which accounted for (a) 5% or more of the revenues of the Company on
a consolidated basis for the four full fiscal quarters for which financial
results have been reported immediately prior to the Default or Event of Default
and (b) 5% or more of the total assets of the Company on a consolidated basis as
of the four full fiscal quarters for which financial results have been reported
immediately prior to the Default or Event of Default. Subsidiaries of the
Company that hold assets of a specific real estate project will be a "Material
Subsidiary Group" if such subsidiaries, when considered as one subsidiary, would
be a Material Subsidiary under clause (ii) of the preceding sentence.

         "Non-Recourse Indebtedness" means Indebtedness secured by a Lien on
property to the extent the liability for such Indebtedness (and any interest
thereon) is limited to the security of the borrower's rights in such property
and its income and rents, without liability on the part of the Company or any of
its subsidiaries for any deficiency, including liability by reason of any
agreement by the Company or any of its subsidiaries to provide additional
capital or maintain the financial condition of or otherwise support the credit
of the Person incurring such indebtedness; provided, however, that with respect
to the Company and its Restricted Subsidiaries, Non-Recourse Indebtedness shall
also include Indebtedness of Coventry of California, Inc., Del Webb's Coventry
Homes, Inc., Del Webb's Coventry Homes of Tucson, Inc., Del Webb's Coventry
Homes Construction of Tucson Co., Del Webb's Coventry Homes of Nevada, Inc., Del
Webb Homes, Inc., Trovas Company and Trovas Construction Co. (collectively
"Coventry"), but only to the extent that, and so long as, (a) such Indebtedness
shall have no recourse whatsoever (including but not limited to, no recourse
with respect to the collection of principal or interest on such Indebtedness)
to the Company or any Restricted Subsidiary of the Company (other than Coventry)
or any assets of the Company or any Restricted Subsidiary of the Company (other
than Coventry), (b) neither the Company nor any of its Restricted Subsidiaries
(other than Coventry) shall have provided to any holder of Indebtedness of
Coventry any covenant or agreement to maintain a minimum net worth at Coventry
or other wise directly or indirectly provided any other similar form of credit
or capital support to Coventry, (c) the proceeds of such Indebtedness are used
exclusively by Coventry in connection with its business and (d) the aggregate of
all direct and indirect Investments by the Company and its Restricted
Subsidiaries in Coventry shall not exceed $15 million. Indebtedness which is
otherwise Non-Recourse Indebtedness will not lose its character as Non-Recourse
Indebtedness because there is recourse to the borrower, any guarantor or any
other Person for (1) environmental warranties or indemnities, (2) indemnities
for fraud, misrepresentation or non-payment of rents or profits from secured
assets to be paid to the lender or (3) any other matters which are


                                       10
<PAGE>   21
at the relevant time customary in instruments evidencing or securing
non-recourse Indebtedness.

         "Officers' Certificate" means a certificate signed by two Officers, one
of whom must be the principal executive officer, principal financial officer or
principal accounting officer of the Company.

         "Opinion of Counsel" means a written opinion from legal counsel who is
reasonably acceptable to the Trustee. The counsel may be an employee of or
counsel to the Company or the Trustee.

         "Outstanding Debentures" means the 9% Debentures, the 9 3/4% Debentures
due 2003, the 9 3/4% Debentures due 2008 and the 9 3/8% Debentures, in each
case, to the extent outstanding at the time in question.

         "Person" means any individual, corporation, partnership, joint venture,
incorporated or unincorporated association, joint-stock company, trust,
unincorporated organization or government or other agency or political
subdivision thereof or other entity of any kind.

         "principal" of a debt security, including the Securities, means the
principal of the security plus the premium, if any, on the security.

         "redemption date" when used with respect to any of the Securities to be
redeemed, means the date fixed by the Company for such redemption pursuant to
this Indenture and the Securities.

         "redemption price" when used with respect to any of the Securities to
be redeemed, means the price fixed for such redemption pursuant to this
Indenture and the Securities.

         "Refinancing Indebtedness" means renewals, extensions, refinancings or
refundings of Indebtedness outstanding on the date of, or permitted to be
incurred by, the Indenture (including Refinancing Indebtedness, but excluding
any Indebtedness incurred pursuant to clauses (i), (vi) and (vii) of Section
4.05), provided that, (A) in the case of any refinancing or refunding of
Indebtedness equal in right of payment to the Securities, such Refinancing
Indebtedness is made equal in right of payment or subordinate to the Securities
and, in the case of any refinancing or refunding of Indebtedness subordinated to
the Securities, such Refinancing Indebtedness is made subordinate to the
Securities to substantially the same extent as such refinanced or


                                       11
<PAGE>   22
refunded Indebtedness is subordinated to the Securities, (B) in either such
case, such Refinancing Indebtedness does not require the payment of all or a
portion of the principal thereof (whether pursuant to purchase, redemption,
defeasance, retirement, sinking fund payment, payment at stated maturity or
otherwise, but excluding any retirement required by virtue of acceleration of
such Indebtedness upon an event of default thereunder) prior to the final
scheduled maturity of the Indebtedness being refinanced or refunded, (C) the
portion, if any, of such Refinancing Indebtedness that is scheduled to mature on
or prior to the maturity date of the Securities has a Weighted Average Life to
Maturity at the time such Refinancing Indebtedness is incurred that is equal to
or greater than the Weighted Average Life to Maturity of the portion of the
Indebtedness being refunded, refinanced or extended that is scheduled to mature
on or prior to the maturity date of the Securities, (D) such Refinancing
Indebtedness will be Refinancing Indebtedness to the extent it is in an
aggregate principal amount that is equal to or less than the aggregate principal
amount then outstanding under the Indebtedness being refinanced or refunded and
(E) if such Indebtedness being renewed, extended, refinanced or refunded is
Non-Recourse Indebtedness incurred pursuant to clause (iv) of Section 4.05, only
to the extent such Refinancing Indebtedness is Non-Recourse Indebtedness and is
secured with only the assets as the Indebtedness being renewed, extended,
refinanced or refunded.

         "Released Asset Value" means the undepreciated and unamortized cost
basis of assets or property, or portion thereof, of the Company or a Restricted
Subsidiary which is released from an Excess Asset Lien (to the extent of the
release). The amount of the Released Asset Value is equal to the undepreciated
and unamortized cost basis of such assets or property (or relevant portion
thereof), at the time of the granting of the Excess Asset Lien, so released (to
the extent of the release).

         "repurchaseable" does not include redeemable.

         "Restricted Payment" means with respect to any Person, (i) the
declaration of any dividend or the making of any other payment or distribution
of cash, securities or other property or assets in respect of such Person's
Capital Stock (except that a dividend payable solely in Capital Stock (other
than Disqualified Stock) of such Person shall not constitute a Restricted
Payment), (ii) any payment on account of the purchase, redemption, retirement or
other acquisition for value of such Person's Capital Stock or any other payment
or distribution made in respect thereof, either directly or indirectly, (iii)
any Investment in (a) an Unrestricted Subsidiary necessary to fund operating
expenses, or (b) any other Investment in an Unrestricted Subsidiary, (iv) any
principal payment, redemption, repurchase, defeasance or other acquisition or
retirement of (a) Excluded Debt or (b) Indebtedness of the Company or its
subsidiaries


                                       12
<PAGE>   23
which is subordinated in right of payment to the Securities prior to the
scheduled principal payment or scheduled maturity of such Indebtedness or (v)
the grant of an Excess Asset Lien; provided, however, that with respect to the
Company and its subsidiaries, Restricted Payments shall not include (a) any
payment described in clause (i) or (ii) above made to the Company or any of its
Wholly Owned Restricted Subsidiaries by any of the Company's subsidiaries, (b)
any underwritten call of Indebtedness of the Company which is convertible into
Capital Stock (other than Disqualified Stock) but only to the extent the Company
is not required to make any redemption or principal payments in respect of
Indebtedness subject to such under written call (other than redemption and
principal payments which are covered by the net proceeds received by the Company
from a concurrent sale of Capital Stock (other than Disqualified Stock) to the
underwriters or standby purchasers participating in such underwritten call) or
(c) the exchange by the Company of Capital Stock (other than Disqualified Stock)
for Indebtedness of the Company or a Restricted Subsidiary in an exchange offer,
but only to the extent the exchange is solely for such Capital Stock.

         "Restricted Subsidiaries" means each of the subsidiaries of the Company
which is not, as of the determination date, an Unrestricted Subsidiary of the
Company.

         "SEC" means the Securities and Exchange Commission.

         "Securities" means the Securities described above issued under this
Indenture.

         "subsidiary" of any Person means (i) any corporation of which at least
a majority of the aggregate voting power of all classes of the Common Equity is
owned by such Person directly or through one or more other subsidiaries of such
Person and (ii) any entity other than a corporation in which such Person,
directly or indirectly, owns at least a majority of the Common Equity of such
entity.

         "Sun City Las Vegas" means the Company's age-restricted active adult
community development located in Las Vegas, Nevada, as its geographic boundaries
existed at February 11, 1994.

         "Sun City Palm Desert" means the Company's age-restricted active adult
community development located in the Coachella Valley in Southern California
(formerly known as Sun City Palm Springs), as its geographic boundaries existed
at February 11, 1994.


                                       13
<PAGE>   24
         "Sun City Tucson" means the Company's age-restricted active adult
community development located in Pima County, Arizona, as its geographic
boundaries existed at February 11, 1994.

         "Sun City West" means the Company's age-restricted active adult
community development located in Maricopa County, Arizona, as its geographic
boundaries existed at February 11, 1994.

         "TIA" means the Trust Indenture Act of 1939 (15 U.S. Code Sections
77aaa-77-bbbb) as in effect on the date of execution of this Indenture, except
as provided in Section 9.03.

         "Trustee" means the party named as such above until a successor
replaces it in accordance with the applicable provisions of this Indenture and
thereafter means the successor.

         "Trust Officer" means any officer of the Trustee assigned by the
Trustee to administer its corporate trust matters.

         "Unrestricted Subsidiaries" means each of the subsidiaries of the
Company so designated by a resolution adopted by the Company's Board of
Directors and whose creditors have no direct or indirect recourse (including,
but not limited to, recourse with respect to the payment of principal or
interest on Indebtedness of such subsidiary) to the Company or a Restricted
Subsidiary (except to the extent the Investment made by the Company in the
Unrestricted Subsidiary is (a) permitted under Section 4.06 and (b) is a
Guarantee); provided, however, that the Board of Directors of the Company will
be prohibited from designating any subsidiary which holds, directly or
indirectly, any of the assets of Sun City West, Sun City Tucson, Sun City Las
Vegas or Sun City Palm Desert as an Unrestricted Subsidiary. The Board of
Directors of the Company may designate an Unrestricted Subsidiary to be a
Restricted Subsidiary, provided that (i) any such redesignation shall be deemed
to be an incurrence by the Company and its Restricted Subsidiaries of the
Indebtedness (if any) of such redesignated subsidiary for purposes of Section
4.05 as of the date of such redesignation and (ii) immediately after giving
effect to such redesignation and the incurrence of any such additional
Indebtedness, the Company and its Restricted Subsidiaries could incur $1 of
additional Indebtedness pursuant to the Consolidated Fixed Charge Coverage Ratio
in Section 4.05. Subject to the foregoing, the Board of Directors of the Company
also may designate any Restricted Subsidiary to be an Unrestricted Subsidiary,
provided that (i) all previous Investments by the Company and its Restricted
Subsidiaries shall be deemed to be Restricted Payments at the time


                                       14
<PAGE>   25
of such designation and shall reduce the amount available for Restricted
Payments under Section 4.06 and (ii) immediately after giving effect to such
designation and reduction of amounts available for Restricted Payments under
Section 4.06, the Company and its Restricted Subsidiaries could incur $1 of
additional Indebtedness pursuant to the Consolidated Fixed Charge Coverage Ratio
in Section 4.05. Any such designation or redesignation by the Board of Directors
shall be evidenced to the Trustee by the filing with the Trustee of a certified
copy of the Resolution of the Company's Board of Directors giving effect to such
designation or redesignation and an officer's certificate certifying that such
designation or redesignation complied with the foregoing conditions and setting
forth the underlying calculations of such certificate.

         "Weighted Average Life to Maturity" means, when applied to any Indebted
ness or portion thereof (if applicable), at any date, the number of years
obtained by dividing (i) the then outstanding principal amount of such
Indebtedness or portion thereof (if applicable) into (ii) the sum of the
products obtained by multiplying (a) the amount of each remaining installment,
sinking fund, serial maturity or other required payment of principal, including
payment at final maturity, in respect thereof, by (b) the number of years
(calculated to the nearest one-twelfth) that will elapse between such date and
the making of such payment.

         "Wholly Owned Restricted Subsidiary" of the Company means a Restricted
Subsidiary of the Company of which 100% of the Common Equity (except for
directors' qualifying shares or certain minority interests owned by other
Persons solely due to local law requirements that there be more than one
stockholder, but which interest is not in excess of what is required for such
purpose) is owned directly by the Company or through one or more other Wholly
Owned Restricted Subsidiaries of the Company.

         "Wholly Owned Subsidiary" of any Person means (i) a subsidiary of which
100% of the Common Equity (except for directors' qualifying shares or certain
minority interests owned by other Persons solely due to local law requirements
that there be more than one stockholder, but which interest is not in excess of
what is required for such purpose) is owned directly by such Person or through
one or more other Wholly Owned Subsidiaries of such Person or (ii) any entity
other than a corporation in which such Person, directly or indirectly, owns all
of the Common Equity.


                                       15
<PAGE>   26
SECTION 1.02      OTHER DEFINITIONS.


<TABLE>
<CAPTION>
Term                                                                   Defined in Section
----                                                                   ------------------
<S>                                                                    <C>
"Affiliate Transaction"..............................................           4.08
"Bankruptcy Law".....................................................           6.01
"business day".......................................................           10.07
"Custodian"..........................................................           6.01
"Debt"...............................................................           11.02
"Designated Senior Debt".............................................           11.02
"Event of Default"...................................................           6.01
"Legal Holiday"......................................................           10.07
"Officer"............................................................           10.10
"Paying Agent".......................................................           2.03
"Registrar"..........................................................           2.03
"Representative".....................................................           11.02
"Senior Debt"........................................................           11.02
"United States Government Obligations"...............................           8.01
</TABLE>

SECTION 1.03      INCORPORATION BY REFERENCE OF TRUST INDENTURE ACT.

         Whenever this Indenture refers to a provision of the TIA, the provision
is incorporated by reference in and made a part of this Indenture.

         The following TIA terms used in this Indenture have the following
meanings:

         "Commission" means the SEC;

         "indenture securities" means the Securities;

         "indenture security holder" means a Securityholder or Holder;

         "indenture to be qualified" means this Indenture;

         "indenture trustee" or "institutional trustee" means the Trustee; and


                                       16
<PAGE>   27
         "obligor" on the Securities means the Company or any other obligor on
the Securities.

         All other terms used in this Indenture that are defined by the TIA,
defined by TIA reference to another statute or defined by SEC rule under the TIA
have the meanings so assigned to them.

SECTION 1.04      RULES OF CONSTRUCTION.

         Unless the context otherwise requires:

                  (1) a term has the meaning assigned to it;

                  (2) an accounting term not otherwise defined has the meaning
         assigned to it in accordance with GAAP;

                  (3) "or" is not exclusive;

                  (4) words in the singular include the plural, and in the
         plural include the singular; and

                  (5) the male, female and neuter genders include one another.


                                    ARTICLE 2

                                 THE SECURITIES

SECTION 2.01      FORM AND DATING.

         The Securities and the Trustee's certificate of authentication relating
thereto shall be substantially in the form set forth in Exhibit A, which is part
of this Indenture, with such appropriate insertions, omissions, substitutions
and other variations as are required or permitted by this Indenture. The
Securities may have notations, legends or endorsements required by law, stock
exchange rule or usage. The Company shall approve the forms of the Securities
and any notation, legend or endorsement on them. Each Security shall be dated
the date of its authentication.


                                       17
<PAGE>   28
         The terms and provisions contained in the Securities shall constitute,
and are hereby expressly made, a part of this Indenture and, to the extent
applicable, the Company and the Trustee, by their execution and delivery of this
Indenture, expressly agree to such terms and provisions and to be bound thereby.

SECTION 2.02      EXECUTION AND AUTHENTICATION.

         Two Officers shall sign the Securities for the Company by manual or
facsimile signature.

         If an Officer whose signature is on a Security no longer holds that
office at the time the Security is authenticated, the Security shall
nevertheless be valid.

         A Security shall not be valid until authenticated by the manual
signature of the Trustee. The signature shall be conclusive evidence that the
Security has been authenticated under this Indenture.

         Upon a written order of the Company signed by an Officer of the
Company, the Trustee shall authenticate Securities for original issue up to the
aggregate principal amount stated in paragraph 4 of the Securities (being
$200,000,000). The aggregate principal amount of Securities outstanding at any
time may not exceed that amount except as provided in Section 2.07.

         The Securities shall be issuable only in registered form without
coupons and only in denominations of $1,000 or any integral multiple thereof.

         The Trustee may appoint an authenticating agent acceptable to the
Company to authenticate Securities. An authenticating agent may authenticate
Securities whenever the Trustee may do so. Each reference in this Indenture to
authentication by the Trustee includes authentication by such agent. An
authenticating agent has the same right as an Agent to deal with the Company or
an Affiliate.

                  Every Global Security authenticated and delivered hereunder
shall bear a legend in substantially the following form:

                  THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE
INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITORY
OR A NOMINEE OF A DEPOSITORY. THIS GLOBAL SECURITY IS EXCHANGEABLE FOR
SECURITIES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE DEPOSITORY 


                                       18
<PAGE>   29
OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE, AND
NO TRANSFER OF THIS SECURITY (OTHER THAN A TRANSFER OF THIS SECURITY AS A WHOLE
BY THE DEPOSITORY TO A NOMINEE OF THE DEPOSITORY OR BY A NOMINEE OF THE
DEPOSITORY TO THE DEPOSITORY OR ANOTHER NOMINEE OF THE DEPOSITORY) MAY BE
REGISTERED EXCEPT IN SUCH LIMITED CIRCUMSTANCES. EVERY SECURITY DELIVERED UPON
REGISTRATION OF TRANSFER OF, OR IN EXCHANGE FOR, OR IN LIEU OF, THIS GLOBAL
SECURITY SHALL BE A GLOBAL SECURITY SUBJECT TO THE FOREGOING, EXCEPT IN LIMITED
CIRCUMSTANCES. UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"),
TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT,
AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH
OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY
PAYMENT IS TO BE MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY
AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF
FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE
REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

         Owners of beneficial interests in a Global Security, as such, are not
Holders under the Indenture and will not be entitled to the rights of Holders
under the Indenture.

SECTION 2.03      REGISTRAR AND PAYING AGENT.

         The Company shall maintain or cause to be maintained in the Borough of
Manhattan, City of New York (the "New York Office"), State of New York, and in
such other locations as it shall determine, an office or agency: (i) where
securities may be presented for registration of transfer or for exchange
("Registrar"); (ii) where Securities may be presented for payment ("Paying
Agent"); and (iii) where notices and demand to or upon the Company in respect of
Securities and this Indenture may be served by the Holders. The Registrar shall
keep a register of the Securities and of their transfer and exchange. The
Company may appoint one or more co-registrars and one or more additional Paying
Agents. The term "Paying Agent" includes any additional Paying Agent. The
Company may change any Paying Agent, Registrar or co-registrar without prior
notice. The Company shall notify the Trustee of the name and address of any
Agent not a party to this Indenture and shall enter into an appropriate


                                       19
<PAGE>   30
agency agreement with any Registrar, Paying Agent or co-registrar not a party to
this Indenture. The agreement shall implement the provisions of this Indenture
that relate to such Agent. The Company or any of its subsidiaries may act as
Paying Agent, Registrar or co-registrar, except that for purposes of Articles 3
and 8 and Sections 4.14 and 4.15, neither the Company nor any of its
subsidiaries shall act as Paying Agent. If the Company fails to appoint or
maintain another entity as Registrar or Paying Agent, the Trustee shall act as
such, the Trustee shall initially act as Registrar and Paying Agent and the New
York Office shall initially be the office of the Trustee in the Borough of
Manhattan, City of New York, State of New York. The Company initially appoints
DTC to act as Depository with respect to the Securities. The Trustee shall act
as custodian for the Depository with respect to the Global Securities.

SECTION 2.04      PAYING AGENT TO HOLD MONEY IN TRUST.

         The Company shall require each Paying Agent (other than the Trustee,
who hereby so agrees), to agree in writing that the Paying Agent will hold in
trust for the benefit of Securityholders or the Trustee all money held by the
Paying Agent for the payment of principal or interest on the Securities, and
will notify the Trustee of any default by the Company in making any such
payment. While any such default continues, the Trustee may require a Paying
Agent to pay all money held by it to the Trustee. The Company at any time may
require a Paying Agent to pay all money held by it to the Trustee. Upon payment
over to the Trustee, the Paying Agent (if other than the Company or a
subsidiary) shall have no further liability for the money. If the Company or a
subsidiary acts as Paying Agent, it shall segregate and hold in a separate trust
fund for the benefit of the Securityholders all money held by it as Paying
Agent.

SECTION 2.05      SECURITYHOLDER LISTS.

         The Trustee shall preserve in as current a form as is reasonably
practicable the most recent list available to it of the names and addresses of
Securityholders. If the Trustee is not the Registrar, the Company shall furnish
to the Trustee on or before each interest payment date and at such other times
as the Trustee may request in writing a list in such form and as of such date as
the Trustee may reasonably require of the names and addresses of
Securityholders.


                                       20
<PAGE>   31
SECTION 2.06      TRANSFER AND EXCHANGE.

         Where Securities are presented to the Registrar or a co-registrar with
a request to register a transfer or to exchange them for an equal principal
amount of Securities of other denominations, the Registrar shall register the
transfer or make the exchange if its requirements for such transactions are met.
To permit registrations of transfers and exchanges, the Company shall issue and
the Trustee shall authenticate Securities at the Registrar's request. No service
charge shall be made for any registration of transfer or exchange (except as
otherwise expressly permitted herein), but the Company may require payment of a
sum sufficient to cover any transfer tax or similar governmental charge payable
in connection therewith (other than any such transfer tax or similar
governmental charge payable upon exchanges pursuant to Sections 2.10, 3.06 or
9.05).

         The Company shall not be required (i) to issue, register the transfer
of or exchange Securities during a period beginning at the opening of business
15 days before the day of any selection of Securities for redemption under
Section 3.02 and ending at the close of business on the day of selection, or
(ii) to register the transfer or exchange of any Security so selected for
redemption in whole or in part, except the unredeemed portion of any Security
being redeemed in part.

         The Company will execute and the Trustee will, in accordance with this
Section 2.06 for so long as the Securities are to be issued in whole or in part
in the form of one or more Global Securities, authenticate and deliver one or
more Global Securities that will (i) represent and will be denominated in an
amount equal to the aggregate outstanding principal amount of the Securities to
be represented by such Global Security or Securities, (ii) be registered in the
name of the Depository for such Global Security or Securities or the nominee of
such Depository, (iii) be delivered by the Trustee to such Depository or
pursuant to such Depository's instructions and (iv) bear the legends set forth
in Section 2.02 hereof.

         Each Depository appointed in accordance herewith for a Global Security
must, at the time of its appointment and at all times while it serves as
Depository, be a clearing agency registered under the Exchange Act and any other
applicable statute or regulation.

         Notwithstanding any other provision of this Section 2.06, unless and
until it is exchanged in whole for Securities in definitive form, a Global
Security representing all or a portion of the Securities may not be transferred
except as a whole by the Depository to a nominee of such Depository or by a
nominee of such Depository to such


                                       21
<PAGE>   32
Depository or another nominee of such Depository or by such Depository or any
such nominee to a successor Depository or a nominee of such successor
Depository.

         If (i) the Company notifies the Trustee in writing that at any time the
Depository is unwilling or unable to continue as Depository or if at any time
the Depository will no longer be eligible to act as such under this Section
2.06, and a successor Depository is not appointed by the Company within 90 days
after the Company receives notice from the Depository or otherwise becomes aware
of such unwilling ness, inability or ineligibility, (ii) the Company at any time
and in its sole discretion determines that the Securities issued in the form of
one or more Global Securities will no longer be represented by such Global
Security or Securities, or (iii) an Event of Default has occurred and is
continuing, the Company will execute and deliver to the Trustee as promptly as
practicable Securities in definitive form, together with an Officers'
Certificate relating to the authentication and delivery of such Securities, and
the Trustee, as promptly as practicable after the receipt of such Securities and
Officers' Certificate, will authenticate and deliver Securities in definitive
form in an aggregate principal amount equal to the principal amount of, and
containing terms and provisions identical to, the Global Security or Securities
in exchange for such Global Security or Securities.

         Upon the exchange of a Global Security in whole or in part for
Securities in definitive form, such Global Security shall be cancelled by the
Trustee. Securities in definitive form issued in exchange for a Global Security
pursuant to this Section 2.06 will be registered in such names and in such
authorized denominations as the Depository, pursuant to instructions from its
direct or indirect participants or otherwise, will instruct the Trustee in
writing. The Trustee will deliver such Securities in definitive form to the
Persons in whose names such Securities are so registered or as it may otherwise
be directed by the Depository. Upon the exchange of less than the entire
principal amount of a Global Security for Securities in definitive form, the
Company will also execute, and the Trustee, upon receipt of an Officers'
Certificate will also authenticate and deliver, a new Global Security in
aggregate principal amount equal to the difference between the principal amount
of the surrendered Global Security and the aggregate principal amount of
Securities in definitive form issuable upon such exchange.

         In any exchange provided for in any of the preceding paragraphs in this
Section, the Company will execute and the Trustee will authenticate and deliver
Securities in definitive form in authorized denominations.


                                       22
<PAGE>   33
         If a Security in definitive form is issued in exchange for any portion
of a Global Security after the close of business at the office or agency where
such exchange occurs on or after any regular record date for an interest
payment date and before the opening of business at such office or agency on the
next interest payment date, interest will not be payable on such interest
payment date or proposed date for payment, as the case may be, in respect of
such Security in definitive form, but will be payable on such interest payment
date only to the Person to whom interest in respect of such portion of such
Global Security is payable in accordance with the provisions of this Indenture.

         None of the Company, the Trustee, any agent of the Trustee, any Paying
Agent or the Registrar will have any responsibility or liability for any aspect
of the Depository's records relating to or payments made on account of
beneficial ownership interests in a Global Security or for maintaining,
supervising or reviewing any of the Depository's records relating to such
beneficial ownership interests.


SECTION 2.07      REPLACEMENT SECURITIES.

         If the Holder of a Security claims that the Security has been lost,
destroyed or wrongfully taken, the Company shall issue and the Trustee shall
authenticate a replacement Security if the Trustee's and the Company's
requirements are met. If required by the Trustee or the Company as a condition
of receiving a replacement Security, the Holder must provide an indemnity bond
sufficient, in the judgment of both the Company and the Trustee, to fully
protect the Company, the Trustee, any Agent and any authenticating agent from
any loss which any of them may suffer if the Security is replaced. The Company
may charge for its expenses in replacing any Security.

         Every replacement Security is an additional obligation of the Company.

SECTION 2.08      OUTSTANDING SECURITIES.

         The Securities outstanding at any time are all the Securities properly
authenticated by the Trustee except for those cancelled by the Trustee, those
delivered to it for cancellation, and those described in this Section as not
outstanding.

         If a Security is replaced pursuant to Section 2.07, it ceases to be
outstanding unless the Trustee receives proof satisfactory to it that the
replaced Security is held by a bona fide purchaser.


                                       23
<PAGE>   34
         If Securities are considered paid under Section 4.01, they cease to be
outstanding and interest on them ceases to accrue.

         A Security does not cease to be outstanding because the Company or an
Affiliate of the Company holds the Security.

SECTION 2.09      WHEN TREASURY SECURITIES DISREGARDED.

         In determining whether the Holders of the required principal amount of
Securities have concurred in any direction, waiver or consent, Securities owned
by the Company or an Affiliate of the Company shall be considered as though they
are not outstanding, except that for the purposes of determining whether the
Trustee shall be protected in relying on any such direction, waiver or consent,
only Securities which the Trustee knows are so owned shall be so disregarded.

SECTION 2.10      TEMPORARY SECURITIES.

         Until definitive Securities are ready for delivery, the Company may
prepare and the Trustee shall authenticate temporary Securities. Temporary
Securities shall be substantially in the form of definitive Securities but may
have variations that the Company considers appropriate for temporary Securities.
If temporary Securities (other than a Global Security) are issued, the Company
will cause definitive Securities to be prepared without unreasonable delay.
After the preparation of definitive Securities, the temporary Securities shall
be exchangeable for definitive Securities upon surrender of the temporary
Securities at any office or agency of the Company designated pursuant to Section
2.03 without charge to the Holder. Upon surrender for cancellation of any one or
more temporary Securities the Company shall execute and the Trustee shall
authenticate and deliver in exchange therefor a like principal amount of
definitive Securities of authorized denominations. Until so exchanged, the
temporary Securities shall in all respects be entitled to the same benefits
under this Indenture as definitive Securities.

SECTION 2.11      CANCELLATION.

         The Company at any time may deliver Securities to the Trustee for
cancellation. The Registrar and Paying Agent shall forward to the Trustee any
Securities surrendered to them for registration of transfer, exchange or
payment. The Trustee and no one else shall cancel all Securities surrendered for
registration of transfer, exchange, payment, replacement or cancellation and
shall dispose of cancelled Securities as the Company directs; provided, however,
that the Trustee shall not be


                                       24
<PAGE>   35
required to destroy such cancelled Securities. The Company may not issue new
Securities to replace Securities that it has paid or that have been delivered to
the Trustee for cancellation.

SECTION 2.12      DEFAULTED INTEREST.

         If the Company fails to make a payment of interest on the Securities,
it shall pay such defaulted interest plus any interest payable on the defaulted
interest in any lawful manner. It may pay such defaulted interest, plus any such
interest payable on it, to the persons who are Securityholders on a subsequent
special record date. The Company shall fix any such record date and payment
date. At least 15 days before any such record date, the Company shall mail to
Securityholders a notice that states the record date, payment date and amount of
such interest to be paid.

SECTION 2.13      CUSIP NUMBER.

         The Company in issuing the Securities may use a "CUSIP" number, and if
so, such CUSIP number shall be included in notices of redemption or exchange as
a convenience to Holders; provided, however, that any such notice may state that
no representation is made as to the correctness or accuracy of the CUSIP number
printed in the notice or on the Securities and that reliance may be placed only
on the other identification numbers printed on the Securities. The Company will
promptly notify the Trustee of any change in the CUSIP number.


                                    ARTICLE 3

                                   REDEMPTION

SECTION 3.01      NOTICES TO TRUSTEE.

         If the Company elects to redeem Securities pursuant to the optional
redemption provisions of paragraph 5 of the Securities, it shall notify the
Trustee of the redemption date and the principal amount of Securities to be
redeemed. The redemption price shall be the amount determined pursuant to
paragraph 5 of the Securities.

         The Company shall give each notice provided for in this Section at
least 50 days before the redemption date (unless a shorter notice period shall
be satisfactory to the Trustee).


                                       25
<PAGE>   36
SECTION 3.02      SELECTION OF SECURITIES TO BE REDEEMED.

         If less than all the Securities are to be redeemed, the Trustee shall
select the Securities to be redeemed pro rata, by lot or by another means that
is in compliance with the requirements of the principal securities exchange, if
any, on which the Securities are listed. The Trustee shall make the selection
not more than 75 days and not less than 50 days before the redemption date from
Securities outstanding not previously called for redemption. The Trustee may
select for redemption portions of the principal of Securities that have
denominations larger than $1,000. Securities and portions of them it selects
shall be in amounts of $1,000 or integral multiples of $1,000. Provisions of
this Indenture that apply to Securities called for redemption also apply to
portions of Securities called for redemption. The Trustee shall notify the
Company promptly of the Securities or portions of Securities to be called for
redemption.

SECTION 3.03      NOTICE OF REDEMPTION.

         At least 30 days but not more than 60 days before a redemption date,
the Company shall mail a notice of redemption to each Holder whose Securities
are to be redeemed.

         The notice shall identify the Securities to be redeemed and shall
state:

                  (1) the redemption date;

                  (2) the redemption price;

                  (3) if any Security is being redeemed in part, the portion of
         the principal amount of such Security to be redeemed and that, after
         the redemption date, upon surrender of such Security, a new Security
         or Securities in principal amount equal to the unredeemed portion will
         be issued;

                  (4) that Securities called for redemption must be surrendered
         to the Paying Agent to collect the redemption price;

                  (5) that interest on Securities called for redemption ceases
         to accrue on and after the redemption date (unless the Company defaults
         in the payment of the redemption price);


                                       26
<PAGE>   37
                  (6) the paragraph of the Securities pursuant to which the
         Securities are being redeemed;

                  (7) the aggregate principal amount of Securities that are
         being redeemed;

         (8) the CUSIP number of the Securities (provided that the disclaimer
permitted by Section 2.13 may be made); and

                  (9) the name and address of the Paying Agent.

         At the Company's request, the Trustee shall give notice of redemption
in the Company's name and at its expense.

SECTION 3.04      EFFECT OF NOTICE OF REDEMPTION.

         Once notice of redemption is mailed, Securities called for redemption
become due and payable on the redemption date at the price set forth in the
Security.

SECTION 3.05      DEPOSIT OF REDEMPTION PRICE.

         On or before the redemption date, the Company shall deposit with the
Trustee or with the Paying Agent money in immediately available funds sufficient
to pay the redemption price of and accrued interest on all Securities to be
redeemed on that date. The Trustee or the Paying Agent shall return to the
Company any money not required for that purpose.

SECTION 3.06      SECURITIES REDEEMED IN PART.

         Upon surrender of a Security that is redeemed in part, the Company
shall issue and the Trustee shall authenticate for the Holder at the expense of
the Company a new Security equal in principal amount to the unredeemed portion
of the Security surrendered.


                                       27
<PAGE>   38
                                    ARTICLE 4

                                    COVENANTS

SECTION 4.01      PAYMENT OF SECURITIES.

         The Company shall pay the principal of and interest on the Securities
on the dates and in the manner provided in the Securities. Principal and
interest shall be considered paid on the date due if the Trustee or Paying Agent
(other than the Company or a subsidiary) holds on that date money designated for
and sufficient to pay all principal and interest then due; provided, however,
that money held by the Paying Agent for the benefit of holders of Senior Debt
pursuant to the provisions of Article 11 hereof shall not be considered paid
within the meaning of this Section 4.01.

         To the extent lawful, the Company shall pay interest (including
post-petition interest in any proceeding under any Bankruptcy Law) on (i)
overdue principal, at the rate borne by the Securities, compounded semiannually
and (ii) overdue installments of interest (without regard to any applicable
grace period) at the same rate, com pounded semiannually.

SECTION 4.02      SEC REPORTS.

         The Company shall deliver to the Trustee, within 15 days after it files
them with the SEC, copies of the annual reports and of the information,
documents and other reports (or copies of such portions of any of the foregoing
as the SEC may by rules and regulations prescribe) which the Company is required
to file with the SEC pursuant to Section 13 or 15(d) of the Exchange Act. The
Company also shall comply with the other provisions of TIA Section 314(a). The
Company shall timely comply with its reporting and filing obligations under the
applicable federal securities law.

         If the Company is at any time not required to file annual or quarterly
reports pursuant to Section 13 or 15(d) of the Exchange Act, the Company will
file with the Trustee, within 15 days after the last date on which it would have
been required to make such a filing with the SEC, and will upon request of a
Holder mail to that Holder (as soon as practical after receipt of such request)
at his or her address as it appears on the register of Securities kept by the
Registrar, audited annual financial statements prepared in accordance with
generally accepted accounting principles and unaudited quarterly financial
statements. Such financial statements shall be accompanied by a Management's
Discussion and Analysis of Financial Condition and Results


                                       28
<PAGE>   39
of Operations of the Company for the period reported upon in substantially the
form required under the rules and regulations of the SEC, or any successor form
of similar disclosure then required under the rules and regulations of the SEC.

SECTION 4.03      COMPLIANCE CERTIFICATE.

         The Company shall deliver to the Trustee, within 60 days after the end
of the first three fiscal quarters and within 120 days after the end of each
fiscal year of the Company, an Officers' Certificate stating that a review of
the activities of the Company and its subsidiaries during the preceding fiscal
period has been made under the supervision of the signing Officers with a view
to determining whether the Company has fully performed its obligations under
this Indenture and further stating, as to each such Officer signing such
certificate, that to the best of his or her knowledge the Company has kept,
observed, performed and fulfilled each and every covenant contained in this
Indenture and is not in default in the performance or observance of any of the
terms and conditions hereof (or, if a Default or Event of Default shall have
occurred, describing all such Defaults or Events of Default of which he or she
may have knowledge) and that to the best of his or her knowledge no event has
occurred and remains in existence by reason of which payments on account of the
principal of or interest on the Securities are prohibited.

         The Company will, so long as any of the Securities are outstanding,
deliver to the Trustee, forthwith upon becoming aware of (i) any Default, Event
of Default or default in the performance of any term or condition in this
Indenture or (ii) any event of default under any other mortgage, indenture or
instrument as that term is used in Section 6.01(4), an Officers' Certificate
specifying such Default, Event of Default or default.

         So long as not contrary to the then current recommendations of the
American Institute of Certified Public Accountants, at the time the Officers'
Certificate described in the second preceding paragraph is filed with respect
to any fiscal year end of the Company, the Company also will file with the
Trustee a letter or statement of the independent accountants who shall have
certified the financial statements of the Company for its preceding fiscal year
in connection with the annual report of the Company to its stockholders for such
year to that effect that, in making the examination necessary for certification
of such financial statements, nothing came to their attention that would lead
them to believe that the Company has violated any of the terms or conditions
contained in this Indenture, which Default remains uncured at the date of such
letter or statement or, if they shall have obtained knowledge of any such
uncured Default, specifying in such letter or statement such Default or Defaults
and


                                       29
<PAGE>   40
the nature thereof, it being understood that such accountants shall not be
liable directly or indirectly for failure to obtain knowledge of any such
Default or Defaults and that their examination was not directed primarily toward
obtaining knowledge of such noncompliance.

SECTION 4.04      MAINTENANCE OF OFFICE OR AGENCY.

         The Company will maintain or cause to be maintained the office or
agency required under Section 2.03. The Company will give prompt written notice
to the Trustee of the location, and any change in the location, of such office
and agency not maintained by the Trustee.

         The Company may also from time to time designate one or more other
offices or agencies where the Securities may be presented or surrendered for any
or all such purposes and may from time to time rescind such designation;
provided, however, that no such designation or rescission shall in any manner
relieve the Company of its obligation to maintain or cause to be maintained an
office or agency in the City of New York for such purpose.

SECTION 4.05      RESTRICTIONS ON ADDITIONAL INDEBTEDNESS.

         After the date hereof, the Company will not, and will not permit any of
its Restricted Subsidiaries to, directly or indirectly, create, incur, assume,
guarantee, extend the maturity of or otherwise become liable with respect to
(collectively, "incur"), any Indebtedness (other than Indebtedness between the
Company and any of its Wholly Owned Restricted Subsidiaries or among its Wholly
Owned Restricted Subsidiaries) or issue any Disqualified Stock unless, after
giving effect thereto, the Company's Consolidated Fixed Charge Coverage Ratio on
the date thereof would be at least 3.0 to 1.0.

         Notwithstanding the foregoing, the Company or any Restricted Subsidiary
may incur the following Indebtedness (plus interest and premium, if any,
thereon) without regard to the foregoing limitation (although any Indebtedness
so incurred will be included in the determination of the Consolidated Fixed
Charge Coverage Ratio thereafter): (i) Indebtedness under credit agreements in
an aggregate principal amount at any one time outstanding of not more than $150
million; (ii) Indebtedness evidenced by the Securities; (iii) Indebtedness under
Guarantees of Indebtedness incurred in the ordinary course of business of
suppliers or customers, which Guarantees are also in the ordinary course of
business of the Company or its subsidiaries; (iv) Non-Recourse Indebtedness
incurred for the acquisition and/or improvement of real


                                       30
<PAGE>   41
property and secured by Liens on such real property and/or improvements; (v)
Refinancing Indebtedness; (vi) Excluded Debt; and (vii) Indebtedness not
otherwise permitted to be incurred pursuant to clauses (i) through (vi) above
which, together with any other then outstanding Indebtedness incurred pursuant
to this clause (vii) (and refinancings thereof), has an aggregate principal
amount at the time of incurrence of not in excess of 20 percent of Consolidated
Tangible Net Worth of the Company (as of the last fiscal quarter for which
financial results have then been reported).

         Nothing in this Section 4.05 will restrict any Unrestricted Subsidiary
from incurring Indebtedness, and Indebtedness of any Unrestricted Subsidiary
will not be included in the Consolidated Fixed Charge Coverage Ratio, as long as
the Unrestricted Subsidiary incurring such Indebtedness remains an Unrestricted
Subsidiary. As of the date hereof, all of the Company's operating subsidiaries
are Restricted Subsidiaries under this Indenture.

SECTION 4.06      RESTRICTIONS ON DIVIDENDS AND OTHER PAYMENTS.

         The Company shall not, and shall not permit any of its Restricted
Subsidiaries to, directly or indirectly make any Restricted Payment after the
date hereof, except as provided below in this Section 4.06, if at the time of
such Restricted Payment:

                  (i) a Default or Event of Default shall have occurred and be
         continuing or shall occur as a consequence thereof;

                  (ii) the amount of such Restricted Payment, when added to the
         aggregate amount of all Restricted Payments made after February 11,
         1994 other than pursuant to clause (a) below, exceeds the sum of: (1)
         50 percent of the Company's Consolidated Net Earnings (excluding
         Consolidated Net Earnings attributable to dividends or distributions
         from Unrestricted Subsidiaries) accrued during the period (taken as one
         accounting period) since December 31, 1993 (or, if such aggregate
         Consolidated Net Earnings shall be a deficit, minus 100% of such
         aggregate deficit), plus (2) the sum of (x) 100% of the book value of
         property and assets (other than cash), determined at the time such
         property or assets were contributed as an Investment to an Unrestricted
         Subsidiary, received by the Company or its Wholly Owned Restricted
         Subsidiaries from any of their Unrestricted Subsidiaries, up to the
         amount of the Company's and its Restricted Subsidiaries' aggregate net
         Investment in Unrestricted Subsidiaries, provided that such property so
         received is substantially


                                       31
<PAGE>   42
         similar to the property contributed to the Unrestricted Subsidiaries,
         (y) 100% of the cash distributions or cash dividends received by the
         Company or its Wholly Owned Restricted Subsidiaries from any
         Unrestricted Subsidiaries, to the extent the amount of such cash and
         such book value of property and assets referred to in clause (x) above
         do not exceed the amount of the Company's and its Restricted
         Subsidiaries' aggregate net Investment in Unrestricted Subsidiaries and
         (z) 50% of any other cash distributions or cash dividends received by
         the Company and its Wholly Owned Restricted Subsidiaries from
         Unrestricted Subsidiaries, plus (3) the aggregate net proceeds,
         including the fair market value of property other than cash (such fair
         market value to be determined by a majority of the disinterested
         members of the full Board of Directors of the Company, whose good faith
         determination shall be conclusive and evidenced by a resolution
         certified by an Officers' Certificate and filed with the Trustee),
         received by the Company from the issuance of Capital Stock of the
         Company (other than to a subsidiary of the Company) that is not
         Disqualified Stock since December 31, 1993, plus (4) 100% of the
         principal amount of any Indebtedness of the Company or a Wholly Owned
         Restricted Subsidiary that is converted into or exchanged for Capital
         Stock of the Company that is not Disqualified Stock since December 31,
         1993, plus (5) 100% of the Released Asset Value since February 11,
         1994, plus (6) 100% of the reductions since February 11, 1994 in
         Guarantees of the Company which are Investments in Unrestricted
         Subsidiaries to the extent such Guarantees were classified as
         Restricted Payments; or

                  (iii) the Company would be unable to incur an additional $1 of
         Indebtedness under the Consolidated Fixed Charge Coverage Ratio in
         Section 4.05.

Notwithstanding the foregoing, the provisions of this Section 4.06 will not
prevent:

                  (a) Restricted Payments since February 11, 1994 up to, but not
         exceeding, $50 million not otherwise permitted above, provided that any
         Restricted Payments made pursuant to this clause (a) shall be evidenced
         by filing with the Trustee of an Officers' Certificate certifying that
         such Restricted Payment has been made under this exception and,
         provided further, that no Restricted Payment (other than a Restricted
         Payment pursuant to clause (iii)(a) of the definition of Restricted
         Payment) shall be made pursuant to this clause (a) if at the time of
         such Restricted Payment a Default or Event of Default shall have
         occurred and be continuing or shall occur as a consequence thereof;


                                       32
<PAGE>   43
                  (b) the purchase since February 11, 1994 at a price of not
         more than $.05 per right of any rights issued or issuable pursuant to
         any future rights plan of the Company, provided that such purchases
         shall not exceed $1 million in the aggregate;

                  (c) the payment of any dividend within 60 days after the date
         of declaration thereof if the payment thereof would have complied with
         the limitations of this Indenture on the date of declaration; or

                  (d) the retirement of shares of the Company's Capital Stock in
         exchange for or out of the proceeds of a substantially concurrent sale
         (other than a sale to a subsidiary of the Company) of other shares of
         its Capital Stock (other than Disqualified Stock).

SECTION 4.07      LIMITATIONS ON RESTRICTIONS ON DISTRIBUTIONS
                  FROM RESTRICTED SUBSIDIARIES.

         The Company shall not, and will not permit any of its Restricted
Subsidiaries to, create or otherwise cause or suffer to exist or become
effective any consensual encumbrance or restriction (other than encumbrances or
restrictions imposed by law, by judicial or regulatory action or by provisions
in leases or other agreements that restrict the assignability thereof) on the
ability of any Restricted Subsidiary to (i) pay dividends or make any other
distributions on its Capital Stock which is owned by the Company or any of its
other Restricted Subsidiaries, or pay interest on or principal of any
Indebtedness owed to the Company or any of its other Restricted Subsidiaries,
(ii) make loans or advances to the Company or any of its other Restricted
Subsidiaries or (iii) transfer any of its properties or assets to the Company or
any of its other Restricted Subsidiaries, except in each case for encumbrances
or restrictions existing under or by reason of (a) applicable statute, law,
rule, regulation or governmental order, (b) covenants or restrictions contained
in Indebtedness existing as of the date hereof, (c) any restrictions under any
note, indenture, agreement or other document evidencing any Acquired
Indebtedness that was permitted to be incurred pursuant to the provisions of
this Indenture, provided that such restrictions and encumbrances only apply to
assets that were subject to such restrictions and encumbrances prior to the
acquisition of such assets by the Company or its subsidiaries or assets acquired
with the proceeds of such assets, (d) restrictions or encumbrances replacing
those permitted by clause (b) or (c) which are not, in the judgment of the Board
of Directors, determined in good faith, more restrictive, (e) any restrictions
or encumbrances arising in connection with the replacement, renewal or extension
of any credit


                                       33
<PAGE>   44
agreement, credit facility or similar arrangement existing as of the date
hereof, provided that any such restrictions and encumbrances are not, in the
judgment of the Board of Directors, determined in good faith, more restrictive
than those in the credit agreement, credit facility or similar arrangement being
replaced, extended or renewed, as the case may be, (f) any restrictions or
encumbrances arising in connection with the refunding or refinancing of any
Indebtedness existing as of the date hereof, provided that any restrictions and
encumbrances of the type described in this clause that arise in connection with
such refunding or refinancing are not, in the judgment of the Board of
Directors, determined in good faith, more restrictive than those under the
agreement creating or evidencing the Indebtedness being refunded or refinanced,
(g) any agreement restricting the sale or other disposition of property securing
Indebtedness permitted by this Indenture if such agreement does not expressly
restrict the ability of a subsidiary of the Company to pay dividends or make
loans or advances and (h) reasonable and customary borrowing base covenants set
forth in credit agreements pursuant to which Indebtedness otherwise permitted by
this Indenture is outstanding (including but not limited to borrowing base
covenants substantially similar to those contained in the Revolving Loan
Agreement between Del Webb Communities, Inc. and First Interstate Bank of
Nevada, as agent for the lenders, as in effect on February 11, 1994), which
covenants restrict or limit the distribution of revenues or sale proceeds from
real estate or a real estate project based upon the amount of Indebted ness
outstanding on such real estate or real estate project and the value of some or
all of the remaining real estate or the project's remaining assets.

SECTION 4.08      LIMITATIONS ON TRANSACTIONS WITH AFFILIATES.

         The Company and each of its Restricted Subsidiaries will not, after the
date hereof, make any loan, advance, Guarantee or capital contribution to, or
for the benefit of, or sell, lease, transfer or otherwise dispose of any of its
properties or assets to, or for the benefit of, or purchase or lease any
property or assets from, or enter into or amend any contract, agreement or
understanding with, or for the benefit of, (i) any Affiliate of the Company or
any of its subsidiaries or (ii) any Person (or any Affiliate of such Person)
holding 10% or more of the Common Equity of the Company or any of its
subsidiaries (each an "Affiliate Transaction"), except on terms that are no less
favorable to the Company or the relevant Restricted Subsidiary, as the case may
be, than those that could have been obtained in a comparable transaction on an
arms length basis from a Person that is not an Affiliate.

         The Company will not, and will not permit any of its Restricted
Subsidiaries to, enter into an Affiliate Transaction involving or having a value
of more than $10 million unless (i) such Affiliate Transaction has been approved
by a majority of the


                                       34
<PAGE>   45
disinterested members of a Committee of the Board of Directors of the Company or
(ii) the Company has delivered an officer's certificate to the Trustee stating
that (a) the signatory officer was not a party to or otherwise interested in
such Affiliate Transaction and (b) the terms of such Affiliate Transaction are
not less favorable to the Company or the relevant Restricted Subsidiary, as the
case may be, than those that could have been obtained in a comparable
transaction on an arms length basis from a Person that is not an Affiliate.
Delivery of a certificate as required by this Indenture and described above
will, absent manifest fraud, constitute conclusive evidence that the terms of
the Affiliate Transaction in question are not less favorable to the Company or
the relevant Restricted Subsidiary, as the case may be, than those that could
have been obtained in a comparable transaction on an arms length basis from a
Person that is not an Affiliate.

         Notwithstanding the foregoing, the term "Affiliate Transaction" shall
not include any contract, agreement or understanding with or for the benefit of,
or plan for the benefit of, any or all employees of the Company or its
subsidiaries (in their capacity as such) that has been approved by the Company's
Board of Directors, a disinterested committee thereof or the Chief Executive
Officer of the Company (or his or her designee) or stock issuances to directors
pursuant to plans approved by shareholders.

SECTION 4.09      CONTINUED EXISTENCE.

         Subject to Article 5, the Company shall do or cause to be done all
things necessary to preserve and keep in full force and effect its corporate
existence.

SECTION 4.10      TAXES.

         The Company shall pay, prior to delinquency, all taxes, assessments and
governmental levies, except as contested in good faith and by appropriate
proceedings or where the failure to do so (together with all other such
failures) would not have a material adverse effect on the financial condition or
results of operations of the Company and its subsidiaries, taken as a whole.

SECTION 4.11      LIMITATION ON RANKING OF FUTURE INDEBTEDNESS.

         The Company shall not, directly or indirectly, incur, create, assume,
guarantee or otherwise become liable for any Indebtedness which is subordinated
in right of


                                       35
<PAGE>   46
payment to any Senior Debt of the Company and senior in right of payment to the
Securities.

SECTION 4.12      STAY, EXTENSION AND USURY LAWS.

         The Company covenants (to the extent that it may lawfully do so) that
it will not at any time insist upon, plead or in any manner whatsoever claim or
take the benefit or advantage of, any stay, extension or usury law wherever
enacted, now or at any time hereafter in force, that may affect the Company's
obligation to pay the Securities; and the Company (to the extent that it may
lawfully do so) hereby expressly waives all benefit or advantage of any such
law insofar as such law applies to the Securities, and covenants that it will
not, by resort to any such law, hinder, delay or impede the execution of any
power herein granted to the Trustee, but will suffer and permit the execution of
every such power as though no such law has been enacted.

SECTION 4.13      INVESTMENT COMPANY ACT.

         The Company shall not become an investment company subject to
registration under the Investment Company Act of 1940, as amended.

SECTION 4.14      CHANGE OF CONTROL.

         Following the occurrence of any Change of Control, the Company shall
offer (a "Change of Control Offer") to purchase all outstanding Securities at a
purchase price equal to 101% of the aggregate principal amount of the
Securities, plus accrued and unpaid interest to the date of purchase. The Change
of Control Offer shall be deemed to have commenced upon mailing of the notice
described in the next succeeding paragraph and shall terminate 20 business days
after its commencement, unless a longer offering period is required by law.
Promptly after the termination of the Change of Control Offer (the "Change of
Control Payment Date"), the Company shall purchase and mail or deliver payment
for all Securities tendered in response to the Change of Control Offer. If the
Change of Control Payment Date is on or after an interest payment record date
and on or before the related interest payment date, any accrued interest will be
paid to the person in whose name a Security is registered at the close of
business on such record date, and no additional interest will be payable to
Holders who tender Securities pursuant to the Change of Control Offer.

         Within 30 days after any Change of Control, the Company (with notice to
the Trustee), or the Trustee at the Company's request (and at the expense of the
Company),


                                       36
<PAGE>   47
will mail or cause to be mailed to all Holders on the date of the Change of
Control a notice of the occurrence of such Change of Control and of the Holders'
rights arising as a result thereof. Such notice will contain all instructions
and materials necessary to enable Holders to tender their Securities to the
Company. Such notice, which shall govern the terms of the Change of Control
Offer, shall state:

                  (1) that the Change of Control Offer is being made pursuant to
         this Section 4.14, the length of time the Change of Control Offer will
         remain open and that all Securities validly tendered will be accepted
         for payment;

                  (2) the purchase price and the Change of Control Payment Date;

                  (3) that any Security not tendered will continue to accrue
         interest;

                  (4) that any Security accepted for payment pursuant to the
         Change of Control Offer shall cease to accrue interest on the Change of
         Control Payment Date unless the Company defaults in the payment of the
         purchase price;

                  (5) that Holders electing to have a Security purchased
         pursuant to any Change of Control Offer will be required to surrender
         the Security, with the form entitled "Option of Holder to Elect
         Purchase" on the reverse of the Security completed, to the Company, a
         depositary, if appointed by the Company, or a Paying Agent at the
         address specified in the notice prior to termination of the Change of
         Control Offer;

                  (6) that Holders will be entitled to withdraw their election
         if the Company, depositary or Paying Agent, as the case may be,
         receives, not later than the expiration of the Change of Control Offer,
         or such longer period as may be required by law, a facsimile
         transmission or letter setting forth the name of the Holder, the
         principal amount of the Security the Holder delivered for purchase and
         a statement that such Holder is withdrawing his or her election to have
         the Security purchased; and

                  (7) that Holders whose Securities are purchased only in part
         will be issued Securities equal in principal amount to the unpurchased
         portion of the Securities surrendered.

         On or before a Change of Control Payment Date, the Company shall, to
the extent lawful, (i) if the Company appoints a depositary or Paying Agent,
deposit with


                                       37
<PAGE>   48
such depositary or Paying Agent money sufficient to pay the purchase price of
all Securities tendered, (ii) deliver or cause the depositary or Paying Agent to
deliver to the Trustee Securities so tendered and (iii) deliver an Officers'
Certificate identifying the Securities accepted for payment by the Company in
accordance with the terms of this Section 4.14. The depositary or the Paying
Agent, as the case may be, shall promptly mail or deliver to each tendering
Holder an amount equal to the purchase price of the Securities tendered by such
Holder and accepted by the Company for purchase. The Company will publicly
announce the results of the Change of Control Offer on the Change of Control
Payment Date. Any Change of Control Offer will be conducted in compliance with
applicable tender offer rules, including Section 14(e) of the Exchange Act and
Rule 14e-1 thereunder. For purposes of this Section 4.14, neither the Company
nor any of its subsidiaries shall act as Paying Agent or depositary.

SECTION 4.15      MAINTENANCE OF CONSOLIDATED TANGIBLE NET WORTH.

         (a) If the Company's Consolidated Tangible Net Worth at the end of each
of any two consecutive fiscal quarters (the last day of the second such fiscal
quarter being referred to as a "Deficiency Date") is less than $125 million (the
"Minimum Consolidated Tangible Net Worth"), then the Company shall, no later
than 60 days after a Deficiency Date (or 120 days if a Deficiency Date is also
the end of the Company's fiscal year), offer to purchase (a "Net Worth Offer")
10% of the principal amount of Securities originally issued hereunder (or such
lesser amount as may be outstanding at the time the Net Worth Offer is made)
(the "Offer Amount") at a purchase price equal to 100% of the aggregate
principal amount thereof, plus accrued and unpaid interest to the purchase date;
provided, however, that no such Net Worth Offer shall be required if, after the
Deficiency Date but prior to the timely delivery of the Officers' Certificate
required by this Section 4.15, capital is contributed or otherwise paid to the
Company or its subsidiaries sufficient to increase the Company's Consolidated
Tangible Net Worth to $125 million or more. The Net Worth Offer shall remain
open for a period of 20 business days following its commencement and no longer,
unless a longer period is required by law (the "Offer Period"). Promptly after
the termination of the Offer Period (the "Payment Date"), the Company shall
purchase and mail or deliver payment for the Offer Amount of Securities tendered
or, if less than the Offer Amount has been tendered, all Securities tendered in
response to the Net Worth Offer. If less than all of the Securities tendered in
response to the Net Worth Offer are to be purchased, the Company shall select
the Securities to be purchased on a pro rata basis. In no event shall the
Company's failure to meet the Minimum Consolidated Tangible Net Worth at the end
of any fiscal quarter be


                                       38
<PAGE>   49
counted towards the making of more than one Net Worth Offer. Any Net Worth Offer
shall be conducted in compliance with applicable regulations under the federal
securities law, including Exchange Act Rule 14e-1.

         (b) If the Payment Date is on or after an interest payment record date
and on or before the related interest payment date, any accrued interest will be
paid to the Person in whose name a Security is registered at the close of
business on such record date, and no additional interest will be payable to
Holders who tender Securities pursuant to the Net Worth Offer. The Company may
reduce the principal amount of Securities to be purchased pursuant to the Net
Worth Offer by subtracting 100% of the principal amount (excluding premium) of
Securities acquired by the Company subsequent to the Deficiency Date and
surrendered for cancellation through purchase (otherwise than pursuant to this
Section 4.15 or Section 4.14 hereof), redemption or exchange, and which were not
previously used as a credit against any obligation to repurchase Securities
pursuant to this Section.

         (c) The Company shall provide the Trustee with notice of the Net Worth
Offer at least 10 days before the notice of any Net Worth Offer is mailed to
Holders. Such notice shall state whether the Company elects to credit any
Securities against its obligations to repurchase Securities as provided above
and shall set forth the amount of such credit and the basis therefor (including
identification of any previously cancelled Securities not theretofore credited).
Such notice shall be accompanied by any Securities required to be delivered to
the Trustee for cancellation, as provided above, in order to be credited against
the Company's obligation to purchase Securities hereunder.

         (d) A Net Worth Offer shall be deemed to have commenced upon the
mailing by the Company (with notice to the Trustee) or by the Trustee at the
Company's request (and at the expense of the Company), by first class mail, of a
notice to each of the Holders. Such notice shall be mailed no later than 60 days
after the corresponding Deficiency Date (or 120 days if such Deficiency Date is
also the end of the Company's fiscal year). The notice shall, to the extent
permitted by applicable law, be accompanied by a copy of the information
regarding the Company which is (or would be, if the Company were subject to the
reporting requirements of the Exchange Act) required to be contained in a
Quarterly Report on Form 10-Q for the fiscal quarter ending on the Deficiency
Date if such fiscal quarter is one of the Company's first three fiscal quarters.
If such fiscal quarter is the Company's last fiscal quarter, a copy of the
information which is (or would be, if the Company were subject to the reporting
requirements of the Exchange Act) required to be contained in an Annual Report
on Form 10-K (including any financial statements or other information


                                       39
<PAGE>   50
required to be included or incorporated by reference therein) for the fiscal
year ending with such fiscal quarter shall either accompany the notice or be
delivered to Holders not less than 15 days before the Payment Date. The notice
shall contain all instructions and materials necessary to enable such Holders
to tender Securities pursuant to the Net Worth Offer. The notice, which shall
govern the terms of the Net Worth Offer, shall state:

                  (1) that the Net Worth Offer is being made pursuant to this
         Section 4.15 and the length of time the Net Worth Offer will remain
         open;

                  (2) the Offer Amount, the purchase price and the Payment Date;

                  (3) that any Security not tendered or accepted for payment
         will continue to accrue interest;

                  (4) that any Security accepted for payment pursuant to the Net
         Worth Offer shall cease to accrue interest on the Payment Date unless
         the Company defaults in payment of the purchase price;

                  (5) that Holders electing to have a Security purchased
         pursuant to any Net Worth Offer will be required to surrender the
         Security, with the form entitled "Option of Holder to Elect Purchase"
         on the reverse of the Security completed, to the Company, a depositary,
         if appointed by the Company, or a Paying Agent at the address specified
         in the notice prior to termination of the Net Worth Offer;

                  (6) that Holders will be entitled to withdraw their election
         if the Company, depositary or Paying Agent, as the case may be,
         receives, not later than the expiration of the Offer Period, or such
         longer period as may be required by law, a facsimile transmission or
         letter setting forth the name of the Holder, the principal amount of
         the Security the Holder delivered for purchase and a statement that
         such Holder is withdrawing his election to have the Security purchased;

                  (7) that, if the aggregate principal amount of Securities
         surrendered by Holders exceeds the Offer Amount, the Company shall
         select the Securities to be purchased on a pro rata basis (with such
         adjustments as may be deemed appropriate by the Company so that only
         Securities in denominations of $1,000, or integral multiples thereof,
         shall be purchased); and


                                       40
<PAGE>   51
                  (8) that Holders whose Securities are purchased only in part
         will be issued new Securities equal in principal amount to the
         unpurchased portion of the Securities surrendered.

         (e) On or before any Payment Date, the Company shall, to the extent
lawful, (i) accept for payment, on such a pro rata basis, Securities or portions
thereof validly tendered pursuant to the Net Worth Offer, (ii) if the Company
appoints a depositary or Paying Agent, deposit with such depositary or Paying
Agent money sufficient to pay the purchase price of all Securities or portions
thereof so accepted; (iii) deliver or cause such depositary or Paying Agent to
deliver to the Trustee Securities so accepted and (iv) deliver an Officers'
Certificate identifying the Securities or portions thereof accepted for payment
by the Company in accordance with the terms of this Section 4.15. The
depositary, the Paying Agent or the Company, as the case may be, shall promptly
mail or deliver to each tendering Holder an amount equal to the purchase price
of the Securities tendered by such Holder and accepted by the Company for
purchase, and the Trustee shall promptly authenticate and mail or deliver to
such Holders a new Security equal in principal amount to any unpurchased portion
of the Security surrendered. Any Securities not so accepted shall be promptly
mailed or delivered by the Company to the Holder thereof. The Company will
publicly announce the results of the Net Worth Offer on the Payment Date. For
purposes of this Section 4.15, neither the Company nor any of its subsidiaries
shall act as Paying Agent or depositary.


                                    ARTICLE 5

                                   SUCCESSORS

SECTION 5.01      WHEN THE COMPANY MAY MERGE, ETC.

         The Company shall not consolidate or merge with or into, or sell,
lease, convey or otherwise dispose of all or substantially all of its assets
(including by way of liquidation or dissolution) to any Person, unless:

                  (1) the Person formed by or surviving any such consolidation
         or merger (if other than the Company), or to which such sale, lease,
         conveyance or other disposition shall have been made (collectively, the
         "Successor"), is a corporation or other legal entity organized and
         existing under the laws of the United States, any state thereof or the
         District of Columbia;


                                       41
<PAGE>   52
                  (2) the Successor assumes by supplemental indenture in a form
         reasonably satisfactory to the Trustee all the obligations of the
         Company under the Securities and this Indenture;

                  (3) immediately after giving effect to such transaction no
         Default or Event of Default shall have occurred and be continuing;

                  (4) immediately after giving effect to such transaction and
         the use of any net proceeds therefrom, on a pro forma basis the
         Consolidated Tangible Net Worth of the Company or the Successor, as the
         case may be, would be at least equal to the Consolidated Tangible Net
         Worth of the Company immediately prior to such transaction; and

                  (5) the Consolidated Fixed Charge Coverage Ratio of the
         Company or the Successor, as the case may be, immediately after giving
         effect to such transaction, would be such that the Company or the
         Successor, as the case may be, would be entitled to incur at least $1
         of additional indebtedness under the Consolidated Fixed Charge Coverage
         Ratio test in Section 4.05.

         The Company shall deliver to the Trustee prior to the consummation of
the proposed transaction an Officers' Certificate to the foregoing effect and an
Opinion of Counsel stating that the proposed transaction and such supplemental
indenture comply with this Indenture.

         For purposes of this Section 5.01, a sale, lease, conveyance or other
disposition by the Company and/or its subsidiaries of all or substantially all
of the assets of the Company and its subsidiaries, taken as a whole, shall be
deemed a sale, lease, conveyance or other disposition of all or substantially
all of the assets of the Company.

SECTION 5.02      SUCCESSOR CORPORATION SUBSTITUTED.

         Upon any consolidation or merger, or any sale, lease, conveyance or
other disposition of all or substantially all of the assets of the Company in
accordance with Section 5.01, the Successor shall succeed to, and be substituted
for, and may exercise every right and power of, the Company under this Indenture
with the same effect as if the Successor had been named as the Company herein.


                                       42
<PAGE>   53
SECTION 5.03      PURCHASE OPTION ON CHANGE OF CONTROL.

         This Article 5 does not affect the obligations of the Company
(including without limitation any successor to the Company) under Section 4.14.


                                    ARTICLE 6

                              DEFAULTS AND REMEDIES

SECTION 6.01      EVENTS OF DEFAULT.

         An "Event of Default" with respect to any Securities occurs if:

                  (1) the Company defaults in the payment of interest on any
         Security when the same becomes due and payable (whether or not
         prohibited by Article 11 hereof) and the Default continues for a period
         of 30 days;

                  (2) the Company defaults in the payment of the principal of
         any Security when the same becomes due and payable whether at maturity,
         upon redemption at the option of the Company, by declaration of
         acceleration, or otherwise (whether or not prohibited by Article 11
         hereof);

                  (3) the Company fails to comply with any of its other
         agreements or covenants in, or provisions of, the Securities or this
         Indenture and such failure continues for the period and after the
         notice specified below;

                  (4) an event of default occurs under any mortgage, indenture
         or instrument under which there may be issued or by which there may be
         secured or evidenced any Indebtedness for money borrowed by the Company
         or any of its Restricted Subsidiaries (or the payment of which is
         Guaranteed by the Company or any of its Restricted Subsidiaries), other
         than Non-Recourse Indebtedness if (a) either (i) such event of default
         results from the failure to pay any such Indebtedness when due (whether
         at maturity or otherwise) or (ii) as a result of such event of default
         the maturity of such Indebtedness has been accelerated prior to its
         expressed maturity and (b) the principal amount of such Indebtedness,
         together with the principal amount of any other such Indebtedness in
         default for failure to pay principal when due or the maturity of which
         has been so accelerated, equals or exceeds $10 million or more in the


                                       43
<PAGE>   54
         aggregate, without such Indebtedness having been discharged or such
         acceleration rescinded within 30 days after notice to the Company from
         the Trustee or the Holders of 25% in principal amount of the Securities
         then outstanding; provided, however, that if such event of default
         shall be remedied, cured or waived, then the Event of Default
         hereunder, by reason of such event of default, shall be deemed likewise
         to have been remedied, cured or waived without further action by the
         Trustee or any of the Securityholders;

                  (5) a final judgment or final judgments, except to the extent
         the judgment or judgments are in respect of Non-Recourse Indebtedness,
         that exceed $10 million in the aggregate, for the payment of money, are
         entered by a court or courts of competent jurisdiction, and remain
         undischarged for a period (during which execution shall not be
         effectively stayed) of 60 days, against (i) the Company, (ii) any of
         its Material Subsidiaries which is at the time a Restricted Subsidiary
         or (iii) any subsidiary which is at the time a Restricted Subsidiary
         and which is (a) a member of a Material Subsidiary Group and (b)
         material to or holds material assets of (in each case as deter mined in
         good faith by the Board of Directors) the specific real estate project
         in respect of which it is a member of the Material Subsidiary Group;

                  (6) the Company, any Material Subsidiary which is at the time
         a Restricted Subsidiary or any subsidiary which is at the time a
         Restricted Subsidiary and which meets both of the tests for inclusion
         contained in subclauses (a) and (b) of Section 6.01(5)(iii), pursuant
         to or within the meaning of any Bankruptcy Law:

                           (A) commences a voluntary case,

                           (B) consents to the entry of an order for relief
                  against it in an involuntary case,

                           (C) consents to the appointment of a Custodian of it
                  or for all or substantially all of its property, or

                           (D) makes a general assignment for the benefit of its
                  creditors; or

                  (7) a court of competent jurisdiction enters a judgment, order
         or decree under any Bankruptcy Law that:


                                       44
<PAGE>   55
                           (A) is for relief against the Company, any Material
                  Subsidiary which is at the time a Restricted Subsidiary or
                  any subsidiary which is at the time a Restricted Subsidiary
                  and which meets both of the tests for inclusion contained in
                  subclauses (a) and (b) of Section 6.01(5)(iii) in an
                  involuntary case,

                           (B) appoints a Custodian of the Company, any Material
                  Subsidiary which is at the time a Restricted Subsidiary or any
                  subsidiary which is at the time a Restricted Subsidiary and
                  which meets both of the tests for inclusion contained in
                  subclauses (a) and (b) of Section 6.01(5)(iii) for all or
                  substantially all of its property, or

                           (C) orders the liquidation of the Company, any
                  Material Subsidiary which is at the time a Restricted
                  Subsidiary or any subsidiary which is at the time a
                  Restricted Subsidiary and which meets both of the tests for
                  inclusion contained in subclauses (a) and (b) of Section
                  6.01(5)(iii), and the order or decree remains unstayed and in
                  effect for 60 days.

         The term "Bankruptcy Law" means title 11, U.S. Code or any similar
Federal or state law for the relief of debtors. The term "Custodian" means any
receiver, trustee, assignee, liquidator or similar official under any Bankruptcy
Law.

         A Default under clause (3) (other than Defaults under Section 4.06
(except for a Default in connection with a Restricted Payment pursuant to
clauses (iii) and (v) of the definition of Restricted Payment), 4.09, or 5.01,
which Defaults shall be Events of Default with the notice but without the
passage of time specified in this paragraph) is not an Event of Default until
the Trustee or the Holders of at least 25% in principal amount of the then
outstanding Securities notify the Company of the Default and the Company does
not cure the Default within 60 days (10 days with respect to a Default under
Section 4.14) after receipt of the notice. The notice must specify the Default,
demand that it be remedied and state that the notice is a "Notice of Default."

SECTION 6.02      ACCELERATION.

         If an Event of Default (other than an Event of Default with respect to
the Company specified in clauses (6) and (7) of Section 6.01) occurs and is
continuing, the Trustee by written notice to the Company, or the Holders of at
least 25% in aggregate principal amount of the then outstanding Securities by
written notice to the Company and the Trustee, may declare the unpaid principal
of and accrued interest on


                                       45
<PAGE>   56
all the Securities to be due and payable. Upon such declaration of acceleration,
the aggregate principal amount of and all accrued and unpaid interest on the
outstanding Securities shall be due and payable immediately. If an Event of
Default with respect to the Company specified in clause (6) or (7) of Section
6.01 occurs, such an amount shall ipso facto become and be immediately due and
payable without any declaration or other act on the part of the Trustee or any
Holder. The Holders of a majority in principal amount of the then outstanding
Securities by notice to the Trustee may rescind an acceleration and its
consequences (except when there exists a Default consisting of nonpayment of
principal or interest on the Securities except principal or interest due solely
by reason of such acceleration) if the rescission would not conflict with any
judgment or decree.

SECTION 6.03      OTHER REMEDIES.

         If an Event of Default occurs and is continuing, the Trustee may pursue
any available remedy by proceeding at law or in equity to collect the payment of
principal of or interest on the Securities or to enforce the performance of any
provision of the Securities or this Indenture.

         The Trustee may maintain a proceeding even if it does not possess any
of the Securities or does not produce any of them in the proceeding. A delay or
omission by the Trustee or any Securityholder in exercising any right or remedy
accruing upon an Event of Default shall not impair the right or remedy or
constitute a waiver of or acquiescence in the Event of Default. All remedies are
cumulative to the extent permitted by law.

SECTION 6.04      WAIVER OF PAST DEFAULTS.

         Subject to Sections 6.07 and 9.02, the Holders of a majority in
principal amount of the then outstanding Securities by notice to the Trustee may
waive an existing Default or Event of Default and its consequences except a
continuing Default or Event of Default in the payment of the principal of or
interest on any Security. When a Default is waived, it is cured and stops
continuing. No waiver shall extend to any subsequent or other Default or impair
any right consequent thereon.

SECTION 6.05      CONTROL BY MAJORITY.

         The Holders of a majority in principal amount of the then outstanding
Securities may direct the time, method and place of conducting any proceeding
for any remedy available to the Trustee or exercising any trust or power
conferred on it.


                                       46
<PAGE>   57
However, the Trustee may refuse to follow any direction that conflicts with law
or this Indenture, is unduly prejudicial to the rights of other Securityholders
or would involve the Trustee in personal liability.

SECTION 6.06      LIMITATION ON SUITS.

         A Securityholder may not pursue any remedy with respect to this
Indenture or the Securities unless:

                  (1) the Holder gives to the Trustee notice of a continuing
         Event of Default;

                  (2) the Holders of at least 25% in principal amount of the
         then outstanding Securities make a request to the Trustee to pursue the
         remedy;

                  (3) such Holder or Holders offer to the Trustee indemnity
         satisfactory to the Trustee against any loss, liability or expense;

                  (4) the Trustee does not comply with the request within 60
         days after receipt of the request and the offer of indemnity; and

                  (5) during such 60-day period the Holders of a majority in
         principal amount of the then outstanding Securities do not give the
         Trustee a direction inconsistent with the request.

         A Securityholder may not use this Indenture to prejudice the rights of
another Securityholder or to obtain a preference or priority over another
Securityholder.

SECTION 6.07      RIGHTS OF HOLDERS TO RECEIVE PAYMENT.

         Notwithstanding any other provision of this Indenture, the right of any
Holder of a Security to receive payment of principal and interest on the
Security, on or after the respective due dates expressed in the Security, or to
bring suit for the enforcement of any such payment on or after such respective
dates, shall not be impaired or affected without the consent of the Holder.

SECTION 6.08      COLLECTION SUIT BY TRUSTEE.

         If an Event of Default specified in Section 6.01(1) or (2) occurs and
is continuing, the Trustee may recover judgment in its own name and as trustee
of an


                                       47
<PAGE>   58
express trust against the Company for the whole amount of principal and interest
remaining unpaid on the Securities and interest on overdue principal and
interest and such further amount as shall be sufficient to cover the costs and,
to the extent lawful, expenses of collection, including the reasonable
compensation, expenses, disbursements and advances of the Trustee, its agents
and counsel.

SECTION 6.09      TRUSTEE MAY FILE PROOFS OF CLAIM.

         The Trustee may file such proofs of claim and other papers or documents
as may be necessary or advisable in order to have the claims of the Trustee and
the Securityholders allowed in any judicial proceedings relative to the Company,
its creditors or its property. Nothing contained herein shall be deemed to
authorize the Trustee to authorize or consent to or accept or adopt on behalf of
any Securityholder any plan of reorganization, arrangement, adjustment or
composition affecting the Securities or the rights of any Holder thereof, or to
authorize the Trustee to vote in respect of the claim of any Securityholder in
any such proceeding.

SECTION 6.10      PRIORITIES.

         If the Trustee collects any money pursuant to this Article, it shall
pay out the money in the following order:

         First:   to the Trustee for amounts due under Section 7.07;

         Second:  to holders of Senior Debt to the extent required by Article
                  11;

         Third:   to Securityholders for amounts due and unpaid on the
                  Securities for principal and interest, ratably, without
                  preference or priority of any kind, according to the amounts
                  due and payable on the Securities for principal and interest,
                  respectively; and

         Fourth:  to the Company.

         The Trustee may fix a record date and payment date for any payment to
Securityholders.

SECTION 6.11      UNDERTAKING FOR COSTS.

         In any suit for the enforcement of any right or remedy under this
Indenture or in any suit against the Trustee for any action taken or omitted by
it as a Trustee, a


                                       48
<PAGE>   59
court in its discretion may require the filing by any party litigant in the suit
of an undertaking to pay the costs of the suit, and the court in its discretion
may assess reasonable costs, including reasonable attorneys fees, against any
party litigant in the suit, having due regard to the merits and good faith of
the claims or defenses made by the party litigant. This Section does not apply
to a suit by the Trustee, a suit by a Holder pursuant to Section 6.07 or a suit
by Holders of more than 10% in principal amount of the then outstanding
Securities.


                                    ARTICLE 7

                                   THE TRUSTEE

         The Trustee hereby accepts the trust imposed upon it by this Indenture
and covenants and agrees to perform the same, as herein expressed.

SECTION 7.01      DUTIES OF THE TRUSTEE.

         (a) If an Event of Default has occurred and is continuing, the Trustee
shall exercise such of the rights and powers vested in it by this Indenture and
use the same degree of care and skill in its exercise as a prudent person would
exercise or use under the circumstances in the conduct of his or her own
affairs.

         (b) Except during the continuance of an Event of Default:

                  (1) The Trustee need perform only those duties that are
         specifically set forth in this Indenture and no others; and

                  (2) In the absence of bad faith on its part, the Trustee may
         conclusively rely, as to the truth of the statements and the
         correctness of the opinions expressed therein, upon certificates or
         opinions furnished to the Trustee and conforming to the requirements of
         this Indenture. However, in the case of any such opinions or
         certificates which by any provision hereof are specifically required to
         be furnished to the Trustee, the Trustee shall examine the
         certificates and opinions to determine whether or not they conform to
         the requirements of this Indenture.

         (c) The Trustee may not be relieved from liability for its own
negligent action, its own negligent failure to act or its own willful
misconduct, except that:


                                       49
<PAGE>   60
                  (1) This paragraph does not limit the effect of paragraph (b)
         of this Section;

                  (2) The Trustee shall not be liable for any error of judgment
         made in good faith by a Trust Officer, unless it is proved that the
         Trustee was negligent in ascertaining the pertinent facts; and

                  (3) The Trustee shall not be liable with respect to any action
         it takes or omits to take in good faith in accordance with a direction
         received by it pursuant to Section 6.05.

         (d) Every provision of this Indenture that in any way relates to the
Trustee is subject to paragraphs (a), (b) and (c) of this Section.

         (e) The Trustee may refuse to perform any duty or exercise any right or
power unless it receives indemnity satisfactory to it against any loss,
liability or expense.

         (f) The Trustee shall not be liable for interest on any money received
by it except as the Trustee may agree in writing with the Company. Money held in
trust by the Trustee need not be segregated from other funds except to the
extent required by law.

SECTION 7.02      RIGHTS OF THE TRUSTEE.

         (a) The Trustee may rely on any document believed by it to be genuine
and to have been signed or presented by the proper person. The Trustee need not
investigate any fact or matter stated in such a document.

         (b) Before the Trustee acts or refrains from acting, it may require an
Officers' Certificate, an Opinion of Counsel or both. The Trustee shall not be
liable for any action it takes or omits to take in good faith in reliance on
such Officers' Certificate or Opinion of Counsel.

         (c) The Trustee may act through agents and shall not be responsible for
the misconduct or negligence of any agent appointed with due care.

         (d) The Trustee shall not be liable for any action it takes or omits to
take in good faith which it believes to be authorized or within its rights or
powers.


                                       50
<PAGE>   61
         (e) The Trustee may consult with counsel of its selection and the
advice of such counsel or any Opinion of Counsel shall be full and complete
authorization and protection in respect of any action taken, suffered or omitted
by it hereunder in good faith and in reliance thereon.

         (f) The Trustee shall be under no obligation to exercise any of the
rights or powers vested in it by this Indenture at the request or direction of
any of the Holders pursuant to this Indenture, unless such Holders shall have
offered to the Trustee reasonable security or indemnity against the costs,
expenses and liabilities which might be incurred by it in compliance with such
request or direction.

SECTION 7.03      INDIVIDUAL RIGHTS OF THE TRUSTEE.

         The Trustee in its individual or any other capacity may become the
owner or pledgee of Securities and may otherwise deal with the Company or an
Affiliate with the same rights it would have if it were not Trustee. Any Agent
may do the same with like rights. However, the Trustee is subject to Sections
7.10 and 7.11.

SECTION 7.04      TRUSTEE'S DISCLAIMER.

         The Trustee makes no representation as to the validity or adequacy of
this Indenture or the Securities, it shall not be accountable for the Company's
use of the proceeds from the Securities and it shall not be responsible for any
statement in the Indenture or any statement in the Securities other than its
authentication.

SECTION 7.05      NOTICE OF DEFAULTS.

         If a Default occurs and is continuing and if it is known to the
Trustee, the Trustee shall mail to each Securityholder a notice of the Default
within 90 days after it occurs. Except in the case of a Default in payment on
any Security, the Trustee may withhold the notice if and so long as a committee
of its Trust Officers in good faith determines that withholding the notice is in
the interests of Securityholders.

SECTION 7.06      REPORTS BY THE TRUSTEE TO HOLDERS.

         Within 60 days after the reporting date stated in Section 10.10, the
Trustee shall mail to Securityholders a brief report dated as of such reporting
date that complies with TIA Section 313(a) (but if no event described in TIA
Section 313(a) has occurred within twelve months preceding the reporting date,
no report need be


                                       51
<PAGE>   62
transmitted). The Trustee also shall comply with TIA Section 313(b)(2). The
Trustee shall also transmit by mail all reports as required by TIA Section
313(c).

         A copy of each report at the time of its mailing to Securityholders
shall be filed with the SEC and each stock exchange on which the Securities are
listed. The Company shall promptly notify the Trustee when the Securities are
listed on any stock exchange.

SECTION 7.07      COMPENSATION AND INDEMNITY.

         The Company shall pay to the Trustee from time to time such
compensation as shall be agreed in writing between the Company and the Trustee
for its services hereunder. The Trustee's compensation shall not be limited by
any law on compensation of a trustee of an express trust. The Company shall
reimburse the Trustee upon request for all reasonable out-of-pocket expenses
incurred by it. Such expenses may include the reasonable compensation and
out-of-pocket expenses of the Trustee's agents and counsel.

         The Company shall indemnify each of the Trustee and any predecessor
Trustee against any and all loss, damage, claim, liability or expense, including
taxes (other than taxes based on the income, revenues or assets of the Trustee),
incurred by it in connection with the acceptance or administration of the trust
or trusts hereunder except as set forth in the next paragraph. The Trustee shall
notify the Company promptly of any claim for which it may seek indemnity. The
Company shall defend the claim with counsel designated by the Company, who may
be outside counsel to the Company but shall in all events be reasonably
satisfactory to the Trustee, and the Trustee shall cooperate in the defense. In
addition, if the Company does not so defend the Trustee or if at any time the
counsel so selected is ethically prohibited from representing the Trustee
(whether because of a conflict of interest or the provisions of the TIA) or is
not reasonably satisfactory to the Trustee, then the Trustee may retain one
separate counsel and, if deemed advisable by such counsel, local counsel, and
the Company shall pay the reasonable fees and expenses of such separate counsel
and local counsel. The indemnification herein extends to any settlement,
provided that the Company will not be liable for any settlement made without its
consent, provided further that such consent will not be unreasonably withheld.

         The Company need not reimburse any expense or indemnify against any
loss or liability incurred by the Trustee through negligence or bad faith.


                                       52
<PAGE>   63
         To secure the Company's payment obligations in this Section, the
Trustee shall have a lien prior to the Securities on all money or property held
or collected by the Trustee, except that held in trust to pay principal and
interest on Securities.

         When the Trustee incurs expenses or renders services after an Event of
Default specified in Section 6.01(6) or (7) occurs, the expenses and the
compensation for the services are intended to constitute expenses of
administration under any Bankruptcy Law.

         The provisions of this Section 7.07 shall survive the termination of
this Indenture.

SECTION 7.08      REPLACEMENT OF THE TRUSTEE.

         A resignation or removal of the Trustee and appointment of a successor
Trustee shall become effective only upon the successor Trustee's acceptance of
appointment as provided in this Section.

         The Trustee may resign by so notifying the Company. The Holders of a
majority in principal amount of the then outstanding Securities may remove the
Trustee by so notifying the removed Trustee and the Company and may appoint a
successor Trustee with the Company's consent. The Company may remove the Trustee
if:

                  (1) the Trustee fails to comply with Section 7.10;

                  (2) the Trustee is adjudged a bankrupt or an insolvent or an
         order for relief is entered with respect to the Trustee under any
         Bankruptcy Law;

                  (3) a Custodian or public officer takes charge of the Trustee
         or its property; or

                  (4) the Trustee becomes incapable of acting.

         If the Trustee resigns or is removed or if a vacancy exists in the
office of Trustee for any reason, the Company shall promptly appoint a successor
Trustee. Within one year after the successor Trustee takes office, the Holders
of a majority in principal amount of the then outstanding Securities may appoint
a successor Trustee to replace the successor Trustee appointed by the Company.


                                       53
<PAGE>   64
         If a successor Trustee does not take office within 60 days after the
retiring Trustee resigns or is removed, the retiring Trustee, the Company or the
Holders of at least 10% in principal amount of the then outstanding Securities
may petition any court of competent jurisdiction for the appointment of a
successor Trustee.

         If the Trustee fails to comply with Section 7.10, any Securityholder
may petition any court of competent jurisdiction for the removal of the Trustee
and the appointment of a successor Trustee.

         A successor Trustee shall deliver a written acceptance of its
appointment to the retiring Trustee and to the Company. Thereupon the
resignation or removal of the retiring Trustee shall become effective, and the
successor Trustee shall have all the rights, powers and duties of the Trustee
under this Indenture. The successor Trustee shall mail a notice of its
succession to Securityholders. The removed or retiring Trustee shall promptly
transfer all property held by it as Trustee to the successor Trustee, subject to
the lien provided for in Section 7.07. Notwithstanding the replacement of the
Trustee pursuant to this Section 7.08, the Company's obligations under Section
7.07 hereof shall continue for the benefit of the retiring Trustee with respect
to expenses and liabilities incurred by it prior to such replacement.

SECTION 7.09      SUCCESSOR TRUSTEE BY MERGER, ETC.

         If the Trustee consolidates with, merges or converts into, or transfers
all or substantially all of its corporate trust business to, another
corporation, the resulting, surviving or transferee corporation without any
further act shall be the successor Trustee.

SECTION 7.10      ELIGIBILITY; DISQUALIFICATION.

         This Indenture shall always have a Trustee who satisfies the
requirements of TIA Section 310(a)(1). The Trustee shall always have a combined
capital and surplus as stated in Section 10.10. The Trustee is subject to TIA
Section 310(b) regarding the disqualification of a trustee upon acquiring a
conflicting interest.

SECTION 7.11      PREFERENTIAL COLLECTION OF CLAIMS AGAINST COMPANY.

         The Trustee shall comply with TIA Section 311(a), excluding any
creditor relationship set forth in TIA Section 311(b). A Trustee who has
resigned or been removed shall be subject to TIA Section 311(a) to the extent
indicated therein.


                                       54
<PAGE>   65
                                    ARTICLE 8

                     SATISFACTION AND DISCHARGE OF INDENTURE

SECTION 8.01      TERMINATION OF COMPANY'S OBLIGATIONS.

         (a) This Indenture shall cease to be of further effect (except that the
Company's obligations under Section 7.07 and the Trustee's and Paying Agent's
obligations under Section 8.03 shall survive) when all outstanding Securities
thereto fore authenticated and issued have been delivered (other than destroyed,
lost or stolen Securities that have been replaced or paid) to the Trustee for
cancellation and the Company has paid all sums payable hereunder. In addition,
the Company may terminate its obligations under this Indenture (except the
Company's obligations under Sections 7.07 and the Trustee's and Paying Agent's
obligations under Section 8.03) if, under terms satisfactory to the Trustee:

                  (1) the Securities have either become due and payable or are
         by their terms due and payable within one year (or scheduled for
         redemption within one year); and

                  (2) the Company irrevocably deposits in trust with the Trustee
         money or United States Government Obligations (defined below in this
         Section 8.01), or a combination thereof, sufficient, without
         consideration of the reinvestment of interest, in the opinion of the
         chief financial officer of the Company expressed in a written
         certificate delivered to the Trustee, to pay principal and interest on
         the Securities to maturity or upon redemption, as the case may be. The
         Company may make the deposit only during the one-year period and only
         if Article 11 permits it.

However, the Company's obligations in Sections 2.03, 2.04, 2.05, 2.06, 2.07,
4.01, 7.07, 7.08, and 8.04 and the Trustee's and Paying Agent's obligations
under Section 8.03 shall survive until the Securities are no longer outstanding.
Thereafter, only the Company's obligations in Sections 7.07 and the Trustee's
and Paying Agent's obligations under Section 8.03 shall survive.

         After a deposit made pursuant to this Section 8.01, the Trustee, upon
request, shall acknowledge in writing the discharge of the Company's obligations
under this Indenture except for those surviving obligations specified above.


                                       55
<PAGE>   66
         In addition, the Company may elect to have either paragraph (b) or
paragraph (c) below be applied to the outstanding Securities upon compliance
with the conditions set forth in paragraph (d).

         (b) Upon the Company's exercise under the last sentence of paragraph
(a) of the option applicable to this paragraph (b), the Company shall be deemed
to have been released and discharged from its obligations with respect to the
outstanding Securities on the date the conditions set forth below are satisfied
("defeasance"). For this purpose, defeasance means that the Company shall be
deemed to have paid and discharged the entire indebtedness represented by the
outstanding Securities, which shall thereafter be deemed to be "outstanding"
only for the purposes of the Sections of and matters under this Indenture
referred to in (i) and (ii) below, and to have satisfied all its other
obligations under such Securities and this Indenture insofar as such Securities
are concerned (and the Trustee, at the expense of the Company, shall execute
proper instruments acknowledging the same), except for the following, which
shall survive until otherwise terminated or discharged hereunder: (i) the rights
of Holders of outstanding Securities to receive, solely from the trust fund
described in paragraph (d) below and as more fully set forth in such paragraph,
payments in respect of the principal of and interest on such Securities when
such payments are due, (ii) the Company's obligations with respect to such
Securities under Sections 2.03, 2.05, 2.06, 2.07 and 4.04, and, with respect to
the Trustee, under Section 7.07, (iii) the rights, powers, trusts, duties and
immunities of the Trustee hereunder and (iv) this Section 8.01 and Sections 8.03
and 8.04. Subject to compliance with this Section 8.01, the Company may exercise
its option under this paragraph (b) notwithstanding the prior exercise of its
option under paragraph (c) below with respect to the Securities.

         (c) Upon the Company's exercise under the last sentence of paragraph
(a) of the option applicable to this paragraph (c), the Company shall be
released and discharged from its obligations under any covenant contained in
Article 4 (except for Sections 4.01 and 4.04) and Article 5 with respect to the
outstanding Securities on and after the date the conditions set forth below are
satisfied ("covenant defeasance"), and the Securities shall thereafter be deemed
to be not "outstanding" for the purpose of any direction, waiver, consent or
declaration or act of Holders (and the consequences of any thereof) in
connection with such covenants, but shall continue to be deemed "outstanding"
for all other purposes hereunder. For this purpose, such covenant defeasance
means that, with respect to the outstanding Securities, the Company may omit to
comply with and shall have no liability in respect of any term, condition or
limitation set forth in any such covenant, whether directly or indirectly, by
reason of any reference elsewhere herein to any such covenant or by reason of
any


                                       56
<PAGE>   67
reference in any such covenant to any other provision herein or in any other
document and such omission to comply shall not constitute a Default or an Event
of Default under Section 6.01 but, except as specified above, the remainder of
this Indenture (including without limitation obligations set forth in Sections
8.03 and 8.04 hereof) and such Securities shall be unaffected thereby.

         (d) The following shall be the conditions to the application of either
paragraph (b) or (c) above to the outstanding Securities:

                  (1) the Company has irrevocably deposited in trust with the
         Trustee or, at the option of the Trustee, with a trustee, satisfactory
         to the Trustee and the Company under the terms of an irrevocable trust
         agreement in form and substance satisfactory to the Trustee, money or
         United States Government Obligations, or a combination thereof,
         sufficient, without consideration of the reinvestment of interest, in
         the opinion of the chief financial officer of the Company expressed in
         a written certificate delivered to the Trustee, to pay, at maturity,
         principal and interest on the Securities; provided that (i) the trustee
         of the irrevocable trust shall have been irrevocably instructed to pay
         such money or the proceeds of such United States Government
         Obligations to the Trustee, (ii) the Trustee shall have been
         irrevocably instructed to apply such money or the proceeds of such
         United States Government Obligations to the payment of said principal
         and interest with respect to the Securities, and (iii) such deposit
         does not violate Article 11 hereof;

                  (2) the Company has delivered to the Trustee an Officers'
         Certificate stating that (A) all conditions provided for relating to
         either the legal defeasance under paragraph (b) above or the covenant
         defeasance under paragraph (c) above, as the case may be, have been
         complied with and (B) if any other Indebtedness of the Company shall
         then be outstanding, such legal defeasance or covenant defeasance will
         not violate the provisions of the agreements or instruments evidencing
         such Indebtedness;

                  (3) no Default or Event of Default shall have occurred and be
         continuing on the date of such deposit;

                  (4) such legal defeasance or covenant defeasance shall not
         result in a breach or violation of, or constitute a Default or Event of
         Default under, this Indenture or any other agreement or instrument to
         which the Company is a party or by which it is bound;


                                       57
<PAGE>   68
                  (5) in the case of an election under paragraph (b) above, the
         Company shall have delivered to the Trustee an Opinion of Counsel from
         nationally recognized counsel reasonably acceptable to the Trustee
         stating that (x) the Company has received from, or there has been
         published by, the Internal Revenue Service a ruling or (y) since the
         date of this Indenture, there has been a change in the applicable
         federal income tax law, in either case to the effect that the Holders
         of the outstanding Securities will not recognize income, gain or loss
         for federal income tax purposes as a result of such defeasance and will
         be subject to federal income tax on the same amount and in the same
         manner and at the same time as would have been the case if such
         defeasance had not occurred; and

                  (6) in the case of an election under paragraph (c) above, the
         Company shall have delivered to the Trustee an Opinion of Counsel from
         nationally recognized counsel reasonably acceptable to the Trustee (i)
         to the effect that the Holders of the outstanding Securities will
         recognize income, gain or loss for federal income tax purposes in the
         same amount and in the same manner and at the same time as would have
         been the case if such covenant defeasance had not occurred or (ii) that
         the Company has received from, or there has been published by, the
         Internal Revenue Service a ruling to the foregoing effect.

         After such irrevocable deposit made pursuant to this Section 8.01 and
satisfaction of the other conditions set forth herein, the Trustee upon request
shall acknowledge in writing the discharge of the Company's obligations under
this Indenture except for those surviving obligations specified above.

         As used herein, "United States Government Obligations" means
obligations for which the full faith and credit of the United States of America
is pledged and which are not callable at the issuer's option.

SECTION 8.02      APPLICATION OF TRUST MONEY.

         The Trustee shall hold in trust money or United States Government
Obligations deposited with it pursuant to Section 8.01. It shall apply the
deposited money and the money from United States Government Obligations through
the Paying Agent and in accordance with this Indenture to the payment of
principal and interest on the Securities. Money and securities so held in trust
are not subject to Article 11.


                                       58
<PAGE>   69
SECTION 8.03      REPAYMENT TO COMPANY.

         The Trustee and the Paying Agent shall promptly pay to the Company upon
written request any excess money or securities held by them at any time.

         The Trustee and the Paying Agent shall pay to the Company upon written
request any money held by them for the payment of principal or interest that
remains unclaimed for two years after the date upon which such payment shall
have become due; provided, however, that the Company shall have first caused
notice of such payment to the Company to be mailed to each Securityholder
entitled thereto no less than 30 days prior to such payment. After payment to
the Company, Securityholders entitled to the money must look to the Company for
payment as general creditors unless an applicable abandoned property law
designates another Person.

SECTION 8.04      REINSTATEMENT.

         If the Trustee or Paying Agent is unable to apply any money in
accordance with Section 8.02 by reason of any order or judgment of any court or
governmental authority enjoining, restraining or otherwise prohibiting such
application, the Company's obligations under this Indenture and the Securities
shall be revived and reinstated as though no deposit had occurred pursuant to
Section 8.01 until such time as the Trustee or Paying Agent is permitted to
apply all such money in accordance with Section 8.02; provided, however, that if
the Company makes any payment of interest on or principal of any Security
following the reinstatement of its obligations, the Company shall be subrogated
to the rights of the Holders of such Securities to receive such payment from the
money held by the Trustee or Paying Agent.


                                    ARTICLE 9

                                   AMENDMENTS

SECTION 9.01      WITHOUT THE CONSENT OF HOLDERS.

         The Company and the Trustee may amend this Indenture or the Securities
without notice to or the consent of any Securityholder:

                  (1) to cure any ambiguity, defect or inconsistency;

                  (2) to comply with Section 5.01;


                                       59
<PAGE>   70
                  (3) to provide for uncertificated Securities in addition to
         certificated Securities;

                  (4) to make any change that does not adversely affect the
         legal rights hereunder of any Securityholder;

                  (5) to surrender any right or power herein conferred upon the
         Company; or

                  (6) to modify, eliminate or add to the provisions of this
         Indenture to such extent as shall be necessary to effect the
         qualification of the Indenture under the TIA, or under any similar
         federal statute hereafter enacted.

SECTION 9.02      WITH THE CONSENT OF HOLDERS.

         Subject to Section 6.07, the Company and the Trustee may amend this
Indenture or the Securities with the written consent of the Holders of at least
a majority in principal amount of the then outstanding Securities.

         Subject to Sections 6.04 and 6.07, the Holders of a majority in
principal amount of the Securities then outstanding may also waive compliance in
a particular instance by the Company with any provision of this Indenture or the
Securities.

         However, without the consent of each Securityholder affected, an
amendment or waiver under this Section may not:

                  (1) reduce the amount of Securities whose Holders must consent
         to an amendment, supplement or waiver;

                  (2) reduce the rate of or change the time for payment of
         interest on any Security;

                  (3) reduce the principal of or change the fixed maturity of
         any Security or alter the redemption provisions with respect thereto;

                  (4) make any Security payable in money other than that stated
         in the Security;

                  (5) make any change in Sections 6.04, 6.07 or 9.02 (this
         sentence); or


                                       60
<PAGE>   71
                  (6) waive a default in the payment of the principal of, or
         interest on, any Security.

         To secure a consent of the Holders under this Section, it shall not be
necessary for the Holders to approve the particular form of any proposed
amendment or waiver, but it shall be sufficient if such consent approves the
substance thereof.

         After an amendment or waiver under this Section becomes effective, the
Company shall mail to Securityholders a notice briefly describing the amendment
or waiver.

         After the issuance of any Securities, an amendment under this Section
or under Section 9.01 may not make any change that adversely affects in any
material respect the rights under Article 11 of the holders of Senior Debt,
unless such holders consent to the change.

SECTION 9.03      COMPLIANCE WITH THE TRUST INDENTURE ACT.

         Every amendment to this Indenture or the Securities shall be set forth
in a supplemental indenture that complies with the TIA as then in effect.

SECTION 9.04      REVOCATION AND EFFECT OF CONSENTS.

         Until an amendment or waiver becomes effective, a consent to it by a
Holder of a Security is a continuing consent by the Holder and every subsequent
Holder of a Security or portion of a Security that evidences the same debt as
the consenting Holder's Security, even if notation of the consent is not made on
any Security. However, any such Holder or subsequent Holder may revoke the
consent as to his or her Security or portion of a Security if the Trustee
receives the notice of revocation before the date on which the Trustee receives
an Officers' Certificate certifying that the Holders of the requisite principal
amount of Securities have consented to the amendment or waiver.

         The Company may, but shall not be obligated to, fix a record date for
the purpose of determining the Holders entitled to consent to any amendment or
waiver. If a record date is fixed, then notwithstanding the provisions of the
immediately preceding paragraph, those persons who were Holders at such record
date (or their duly designated proxies), and only those persons, shall be
entitled to consent to such amendment or waiver or to revoke any consent
previously given, whether or not such persons continue to be Holders after such
record date. No consent shall be valid or


                                       61
<PAGE>   72
effective for more than 90 days after such record date unless consents from
Holders of the principal amount of Securities required hereunder for such
amendment or waiver to be effective shall have also been given and not revoked
within such 90-day period.

         After an amendment or waiver becomes effective it shall bind every
Securityholder, unless it is of the type described in any of clauses (1) through
(6) of Section 9.02. In such case, the amendment or waiver shall bind each
Holder of a Security who has consented to it.

SECTION 9.05      NOTATION ON OR EXCHANGE OF SECURITIES.

         The Trustee may place an appropriate notation about an amendment or
waiver on any Security thereafter authenticated. The Company in exchange for all
Securities may issue and the Trustee shall authenticate new Securities that
reflect the amendment or waiver.

SECTION 9.06      THE TRUSTEE PROTECTED.

         The Trustee shall sign all supplemental indentures, except that the
Trustee need not sign any supplemental indenture that adversely affects its
rights. The Company may not sign an amendment or supplement until the Board of
Directors approves it. The Trustee, subject to Sections 7.01 and 7.02, shall be
entitled to receive, and shall be fully protected in relying upon, an Opinion of
Counsel stating that any amendment, supplement or waiver is authorized or
permitted by this Indenture and complies with the provisions of this Article 9.


                                   ARTICLE 10

                               GENERAL PROVISIONS

SECTION 10.01     TRUST INDENTURE ACT CONTROLS.

         If any provision of this Indenture limits, qualifies or conflicts with
the duties imposed by TIA Section 318(c), the imposed duties shall control.


                                       62
<PAGE>   73
SECTION 10.02     NOTICES.

         Any notice or communication by the Company or the Trustee to the other
is duly given if in writing and delivered in person or mailed by first-class
mail, with postage prepaid, to the other's address stated in Section 10.10. The
Company or the Trustee by notice to the other may designate an additional or
different address for subsequent notices or communications.

         Any notice or communication to a Securityholder shall be mailed by
first-class mail, with postage prepaid, to his or her address shown on the
register kept by the Registrar. Failure to mail a notice or communication to a
Securityholder or any defect in it shall not affect its sufficiency with respect
to other Securityholders.

         If a notice or communication is mailed in the manner provided above
within the time prescribed, it is duly given, whether or not the addressee
receives it.

         If the Company mails a notice or communication to Securityholders, it
shall mail a copy to the Trustee and each Agent at the same time.

         All other notices or communications shall be in writing.

SECTION 10.03     COMMUNICATION BY HOLDERS WITH OTHER HOLDERS.

         Securityholders may communicate pursuant to TIA Section 312(b) with
other Securityholders with respect to their rights under this Indenture or the
Securities. The Company, the Trustee, the Registrar and anyone else shall have
the protection of TIA Section 312(c).

SECTION 10.04     CERTIFICATE AND OPINION AS TO CONDITIONS
                  PRECEDENT.

         Upon any request or application by the Company to the Trustee to take
any action under this Indenture, the Company shall furnish to the Trustee:

                  (1) an Officers' Certificate stating that, in the opinion of
         such person, all conditions precedent, if any, provided for in this
         Indenture relating to the proposed action have been complied with; and


                                       63
<PAGE>   74
                  (2) an Opinion of Counsel stating that, in the opinion of such
         counsel, all such conditions precedent have been complied with.

SECTION 10.05     STATEMENTS REQUIRED IN CERTIFICATE OR OPINION.

         Each certificate or opinion with respect to compliance with a condition
or covenant provided for in this Indenture (other than a certificate provided
pursuant to TIA Section 314(a)(4)) shall include:

                  (1) a statement that the person making such certificate or
         opinion has read such covenant or condition;

                  (2) a brief statement as to the nature and scope of the
         examination or investigation upon which the statements or opinions
         contained in such certificate or opinion are based;

                  (3) a statement that, in the opinion of such person, he or she
         has made such examination or investigation as is necessary to enable
         him or her to express an informed opinion as to whether or not such
         covenant or condition has been complied with; and

                  (4) a statement as to whether or not, in the opinion of such
         person, such condition or covenant has been complied with; provided,
         however, that with respect to matters of fact an Opinion of Counsel may
         rely on an Officers' Certificate.

SECTION 10.06     RULES BY TRUSTEE AND AGENTS.

         The Trustee may make reasonable rules for action by or a meeting of
Securityholders. The Registrar or Paying Agent may make reasonable rules and set
reasonable requirements for its functions.

SECTION 10.07     LEGAL HOLIDAYS.

         A "Legal Holiday" is a Saturday, a Sunday or a day on which banking
institutions in the City of New York are not required to be open, and a business
day is any day that is not a Legal Holiday. If a payment date is a Legal Holiday
at a place of payment, payment may be made at that place on the next succeeding
day that is not a Legal Holiday, and no interest shall accrue for the
intervening period.


                                       64
<PAGE>   75
SECTION 10.08     NO RECOURSE AGAINST OTHERS.

         No director, officer, employee or shareholder, as such, of the Company
from time to time shall have any liability for any obligations of the Company
under the Securities or the Indenture or for any claim based on, in respect of
or by reason of such obligations or their creation. Each Securityholder
(including each holder of a beneficial interest in a Security) by accepting a
Security waives and releases all such liability. The waiver and release are part
of the consideration for the Securities. Each of such directors, officers,
employees and shareholders is a third party beneficiary of this Section 10.08.

SECTION 10.09     COUNTERPARTS.

         This Indenture may be executed in any number of counterparts and by the
parties hereto in separate counterparts, each of which when so executed shall be
deemed to be an original and all of which taken together shall constitute one
and the same agreement.

SECTION 10.10     OTHER PROVISIONS.

         "Officer" means Chairman of the Board, the Chief Executive Officer, the
President, the Chief Financial Officer, the Chief Accounting Officer, any
Executive Vice President, Senior Vice President, any Vice President, the
Treasurer, any other Executive Officer, the Secretary, any Assistant Treasurer
or any Assistant Secretary of the Company.

         The Company initially appoints the Trustee as Paying Agent, Registrar
and authenticating agent; and the Trustee accepts such appointments.

         The first certificate delivered pursuant to Section 4.03 shall be for
the first full fiscal quarter of the Company following the issuance of
Securities hereunder.

         The reporting date for Section 7.06 is September 15 of each year. The
first reporting date is the first September 15 following the issuance of
Securities hereunder.

         The Trustee shall always have, or shall be a subsidiary of a bank or
bank holding company which has, a combined capital and surplus of at least
$50,000,000 as set forth in its most recent published annual report of
condition.


                                       65
<PAGE>   76
         The Company's address is:

               Del Webb Corporation
               6001 N. 24th Street
               Phoenix, AZ 85016
               Attention:  General Counsel

         The Trustee's address is:

               Bank of Montreal Trust Company
               Wall Street Plaza
               88 Pine Street, 19th Floor
               New York, NY  10005


SECTION 10.11     GOVERNING LAW.

         THE INTERNAL LAWS OF THE STATE OF NEW YORK SHALL GOVERN THIS INDENTURE
AND THE SECURITIES, WITHOUT REGARD TO THE CONFLICTS OF LAWS PROVISIONS THEREOF.

         If any action or proceeding shall be brought by a Holder of any of the
Securities or by the Trustee in order to enforce any right or remedy under this
Indenture or under the Securities, the Company hereby consents and will submit
to the jurisdiction of the courts of the State of New York sitting in the City
of New York or any federal court sitting in the City of New York. The Company
hereby agrees to accept service of process by notice given to it pursuant to the
provisions of Section 10.02.

SECTION 10.12     NO ADVERSE INTERPRETATION OF OTHER AGREEMENTS.

         This Indenture may not be used to interpret another indenture, loan or
debt agreement of the Company or a subsidiary. Any such other indenture, loan or
debt agreement may not be used to interpret this Indenture.

SECTION 10.13     SUCCESSORS.

         All agreements of the Company in this Indenture and the Securities
shall bind its successor. All agreements of the Trustee in this Indenture shall
bind its successor.


                                       66
<PAGE>   77
SECTION 10.14     SEVERABILITY.

         In case any provision in this Indenture or in the Securities shall be
invalid, illegal or unenforceable, the validity, legality and enforceability of
the remaining provisions shall not in any way be affected or impaired thereby.

SECTION 10.15     TABLE OF CONTENTS, HEADINGS, ETC.

         The Table of Contents, Cross-Reference Table and headings of the
Articles and Sections of this Indenture have been inserted for convenience of
reference only, are not to be considered a part hereof and shall in no way
modify or restrict any of the terms or provisions hereof.


                                   ARTICLE 11

                                  SUBORDINATION

SECTION 11.01     AGREEMENT TO SUBORDINATE.

         The Company agrees, and each Securityholder by accepting a Security
agrees, that the indebtedness evidenced by the Securities is subordinated in
right of payment, to the extent and in the manner provided in this Article, to
the prior payment in full of all Senior Debt and that the subordination is for
the benefit of the holders of Senior Debt.

SECTION 11.02     CERTAIN DEFINITIONS.

         "Debt" of any Person, means any indebtedness, contingent or otherwise,
(x) in respect of borrowed money (whether or not the recourse of the lender is
to the whole of the assets of such Person or only to a portion thereof), (y)
evidenced by bonds, notes, debentures or similar instruments (except any of the
foregoing that constitutes a trade payable) or (z) evidenced by letters of
credit.

         "Designated Senior Debt" means (i) Senior Debt of the Company permitted
to be incurred hereunder under any institutional credit agreement and (ii) any
other Senior Debt permitted to be incurred hereunder, the principal amount of
which is $25 million or more.


                                       67
<PAGE>   78
         "Representative" means the indenture trustee or other trustee, agent or
representative for an issue of Senior Debt.

         "Senior Debt" means all present and future Debt created, incurred,
assumed or guaranteed (to the extent of the guarantee) by the Company (and all
renewals, extensions or refundings thereof), unless the instrument under which
such Debt is created, incurred, assumed or guaranteed provides that such Debt is
not senior or superior in right of payment to the Securities. Notwithstanding
anything to the contrary in the foregoing, Senior Debt shall not include (i) any
Debt of the Company to any of its subsidiaries, (ii) any Debt of the Company or
guarantees of Debt of the Company which by its terms or the terms of the
instrument creating or evidencing it expressly provides that such Debt or
guarantee is expressly subordinated in right of payment to any other Debt of the
Company, (iii) the Outstanding Debentures or (iv) guarantees by the Company of
Debt (a) outstanding at the date hereof or (b) which may be outstanding in the
future, except that Senior Debt shall include any present and future guarantees
that provide by their terms that they constitute Senior Debt and the Repayment
Guaranty (Limited), dated as of June 30, 1992, from the Company to Bank One,
Arizona, NA with respect to certain indebtedness of The Villages at Desert
Hills, Inc. The Securities are not senior or superior in right of payment to the
Outstanding Debentures and rank pari passu in right of payment to the
Outstanding Debentures.

SECTION 11.03     LIQUIDATION; DISSOLUTION; BANKRUPTCY.

         Upon any distribution to creditors of the Company in a liquidation or
dissolution of the Company or in a bankruptcy, reorganization, insolvency,
receivership or similar proceeding relating to the Company or its property:

                  (1) holders of Senior Debt shall be entitled to receive
         payment in full in cash of the principal of and interest (including
         interest accruing after the commencement of any such proceeding) to the
         date of payment on the Senior Debt before Securityholders shall be
         entitled to receive any payment of principal of or interest on
         Securities, except to the extent that Securityholders receive
         securities that are subordinated to Senior Debt to at least the same
         extent as the Securities; and

                  (2) until the Senior Debt is paid in full in cash, any
         distribution to which Securityholders would be entitled but for this
         Article shall be made to holders of Senior Debt as their interests may
         appear, except to the extent that


                                       68
<PAGE>   79
         Securityholders receive securities that are subordinated to Senior Debt
         to at least the same extent as the Securities.

         For purposes of this Article 11, a distribution may consist of cash,
securities or other property, by set-off or otherwise.

SECTION 11.04     DEFAULT ON DESIGNATED SENIOR DEBT.

         The Company may not pay principal of or interest on the Securities and
may not acquire from the Trustee or any Securityholder any Securities for cash
or property (other than securities that are subordinated to at least the same
extent as the Securities are subordinated to Senior Debt) until all Senior Debt
has been paid in full if:

                  (i) a default in the payment of any principal or other
         obligations with respect to Designated Senior Debt occurs and is
         continuing beyond any applicable grace period in the agreement,
         indenture or other document governing such Designated Senior Debt; or

                  (ii) a default, other than a payment default, on Designated
         Senior Debt occurs and is continuing that then permits holders of the
         Designated Senior Debt to accelerate its maturity and the Trustee
         receives a notice of the default from a person who may give it pursuant
         to Section 11.12 hereof requesting that payment of principal or
         interest with respect to the Securities be prohibited.

The Company may and shall resume payments on the Securities and may acquire them
upon the earlier of:

                  (1) the date upon which the default is cured or waived, or

                  (2) (2) in the case of a default and notice referred to in
         Section 11.04(ii) hereof, the passage of 179 days after such notice is
         received (the "Payment Blockage Period"),

if this Article otherwise permits the payment or acquisition at the time of such
payment or acquisition.

         Only one Payment Blockage Period may be commenced within any
consecutive 365-day period with respect to the Securities. For all purposes of
this Section 11.04, no nonpayment default that existed or was continuing on the
date of com-


                                       69
<PAGE>   80
mencement of any Payment Blockage Period shall be, or be made, the basis for the
commencement of a second Payment Blockage Period unless such default shall have
been cured or waived for a period of not less than 180 days.

SECTION 11.05     ACCELERATION OF SECURITIES.

         If payment of the Securities is accelerated because of an Event of
Default, the Company shall promptly notify holders of Senior Debt of the
acceleration. The Company shall pay the Securities when 179 days pass after the
acceleration occurs if this Article permits the payment at that time; provided,
however, that if no Senior Debt is outstanding at the time of such acceleration,
the Company shall pay the Securities in accordance with the provisions of
Article 6.

SECTION 11.06     WHEN DISTRIBUTIONS MUST BE PAID OVER.

         In the event that the Company shall make any payment to the Trustee on
account of the principal or interest on the Securities at a time when the
Trustee shall have received notice in accordance with Section 11.12 that such
payment is prohibited by Section 11.03 or 11.04, such payment shall be held by
the Trustee in trust for the benefit of, and shall forthwith be paid over and
delivered, upon written request to, the holders of Senior Debt (pro rata as to
each of such holders on the basis of the respective amounts of Senior Debt held
by them) or their Representative under the indenture or other agreement (if any)
pursuant to which Senior Debt may have been issued, as their respective
interests may appear, for application to the payment of all Senior Debt
remaining unpaid to the extent necessary to pay all Senior Debt in full in
accordance with its terms, after giving effect to any concurrent payment or
distribution to or for the holders of Senior Debt.

         If a distribution is made to Securityholders that because of this
Article should not have been made to them, the Securityholders who receive the
distribution shall hold it in trust for holders of Senior Debt and, upon written
request, pay it over to them as their interests may appear for application to
the payment of all Senior Debt remaining unpaid to the extent necessary to pay
all Senior Debt in full in accordance with its terms, after giving effect to any
concurrent payment or distribution to or for the holders of Senior Debt.


                                       70
<PAGE>   81
SECTION 11.07     NOTICE BY THE COMPANY.

         The Company shall promptly notify the Trustee and the Paying Agent of
any facts known to the Company that would cause a payment of principal of or
interest on the Securities to violate this Article, but failure to give such
notice shall not affect the subordination of the Securities to the Senior Debt
provided in this Article. Nothing in this Article shall apply to claims of, or
payments to, the Trustee under or pursuant to Section 7.07.

SECTION 11.08     SUBROGATION.

         After all Senior Debt is paid in full and until the Securities are paid
in full, Securityholders shall be subrogated to the rights of holders of Senior
Debt to receive distributions applicable to Senior Debt to the extent that
distributions otherwise payable to the Securityholders have been applied to the
payment of Senior Debt. A distribution made under this Article to holders of
Senior Debt which otherwise would have been made to Securityholders is not, as
between the Company and Securityholders, a payment by the Company on Senior
Debt.

SECTION 11.09     RELATIVE RIGHTS.

         This Article defines the relative rights of Securityholders and holders
of Senior Debt. Nothing in this Indenture shall:

                  (1) impair, as between the Company and Securityholders, the
         obligation of the Company, which is absolute and unconditional, to pay
         principal of and interest on the Securities in accordance with their
         terms;

                  (2) affect the relative rights of Securityholders and
         creditors of the Company, other than their rights in relation to
         holders of Senior Debt; or

                  (3) prevent the Trustee or any Securityholder from exercising
         its available remedies upon a Default or Event of Default, subject to
         the rights of holders of Senior Debt to receive distributions otherwise
         payable to Securityholders.

         If the Company fails because of this Article to pay principal of or
interest on a Security on the due date, the failure is still a Default or Event
of Default.


                                       71
<PAGE>   82
SECTION 11.10     SUBORDINATION MAY NOT BE IMPAIRED BY THE
                  COMPANY.

         No right of any holder of Senior Debt to enforce the subordination of
the indebtedness evidenced by the Securities shall be impaired by any act or
failure to act by the Company or by its failure to comply with this Indenture.

SECTION 11.11     DISTRIBUTION OR NOTICE TO THE REPRESENTATIVE.

         Whenever a distribution is to be made or a notice given to holders of
Senior Debt, the distribution may be made and the notice given to their
Representative.

         Upon any payment or distribution of assets of the Company referred to
in this Article 11, the Trustee and the Securityholders shall be entitled to
rely conclusively upon any order or decree made by any court of competent
jurisdiction or upon any certificate of such Representative (as to the Senior
Debt for which it is the Representative) or of any trustee in bankruptcy,
liquidating trustee, Custodian, receiver or agent for the purpose of
ascertaining the persons entitled to participate in such distribution, the
holders of the Senior Debt and other Debt of the Company, the amount thereof or
payable thereon, the amount or amounts paid or distributed thereon and all other
facts pertinent thereto or to this Article 11.

SECTION 11.12     RIGHTS OF THE TRUSTEE AND PAYING AGENT.

         Notwithstanding any provision of this Article 11 or any other provision
of this Indenture, the Trustee and Paying Agent shall not at any time be charged
with knowledge of the existence of any facts which would prohibit the making of
any payment to or by the Trustee or a Paying Agent or the taking of any other
action (pursuant to this Article 11) by the Trustee or a Paying Agent unless and
until the Trustee or such Paying Agent, as the case may be, shall have received
at its office specified in Section 10.10 written notice thereof from the
Company, a Representative or a holder of Senior Debt entitled to give such
notice and, prior to the receipt of any such written notice, the Trustee and
such Paying Agent shall be entitled in all respects conclusively to assume that
no such fact exists. The Trustee or Paying Agent may continue to make payments
on the Securities unless it receives such a notice at least three business days
prior to the date upon which payment is due.

         The Trustee shall be entitled to rely in good faith on the delivery to
it of a written notice by a Person representing himself, herself or itself to be
a Representative


                                       72
<PAGE>   83
or a holder of Senior Debt to establish that such notice has been given by a
Representative or a holder of such Senior Debt. Only the Company, a
Representative or a holder of Senior Debt that has no Representative may give
the notice.

         In the event that the Trustee determines in good faith that further
evidence is required with respect to the right of any Person as a holder of
Senior Debt to participate in any payment or distribution pursuant to this
Article 11, the Trustee may request such Person to furnish evidence to the
reasonable satisfaction of the Trustee as to the amount of Senior Debt held by
such Person, the extent to which such Person is entitled to participate in such
payment or distribution and any other facts pertinent to the rights of such
Person under this Article 11, and if such evidence is not furnished, the
Trustee may defer any payment which it may be required to make for the benefit
of such Person pursuant to the terms of the this Indenture pending judicial
determination as to the rights of such Person to receive such payment.

         The Trustee in its individual or any other capacity may hold Senior
Debt with the same rights it would have if it were not Trustee. Any Agent may do
the same with like rights.

SECTION 11.13     NO FIDUCIARY DUTY TO HOLDERS OF SENIOR DEBT.

         With respect to the holders of Senior Debt, the Trustee undertakes to
perform or to observe only such of its covenants and obligations as are
specifically set forth in this Article 11, and no implied covenants or
obligations with respect to the holders of Senior Debt shall be read into this
Indenture against the Trustee or Paying Agent. Neither the Trustee nor the
Paying Agent shall be deemed to owe any fiduciary duty to the holders of such
Senior Debt, and the Trustee shall not be liable to any holder of such Senior
Debt if it shall, in the absence of bad faith, pay over or deliver to holders of
Securities, the Company or any other person monies or assets to which any holder
of such Senior Debt shall be entitled by virtue of this Article 11 or otherwise.

         The parties have caused this Indenture to be duly executed and
attested, all as of the date first above written, signifying their agreements
contained in this Indenture.


                                       73
<PAGE>   84
                                        SIGNATURES

                                        DEL WEBB CORPORATION





                                        By:____________________________
                                        Name:
                                        Title:






                                        BANK OF MONTREAL TRUST COMPANY





                                        By:____________________________
                                        Name:
                                        Title:
<PAGE>   85
                                    EXHIBIT A

                               (Face of Security)

              THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE
INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITORY
OR A NOMINEE OF A DEPOSITORY. THIS GLOBAL SECURITY IS EXCHANGEABLE FOR
SECURITIES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE DEPOSITORY OR ITS
NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE, AND NO
TRANSFER OF THIS SECURITY (OTHER THAN A TRANSFER OF THIS SECURITY AS A WHOLE BY
THE DEPOSITORY TO A NOMINEE OF THE DEPOSITORY OR BY A NOMINEE OF THE DEPOSITORY
TO THE DEPOSITORY OR ANOTHER NOMINEE OF THE DEPOSITORY) MAY BE REGISTERED EXCEPT
IN SUCH LIMITED CIRCUMSTANCES. EVERY SECURITY DELIVERED UPON REGISTRATION OF
TRANSFER OF, OR IN EXCHANGE FOR, OR IN LIEU OF, THIS GLOBAL SECURITY SHALL BE A
GLOBAL SECURITY SUBJECT TO THE FOREGOING, EXCEPT IN LIMITED CIRCUMSTANCES.
UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE COMPANY OR ITS
AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE
ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS
REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS TO BE MADE
TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.



                                       A-1
<PAGE>   86
Registered No. ____                                                $ 150,000,000
                                                               CUSIP 947423 AK 5

                              DEL WEBB CORPORATION

promises to pay to CEDE & CO. or registered assigns the principal sum of ONE
HUNDRED FIFTY MILLION DOLLARS ($150,000,000) on February 15, 2010

                      10 1/4% SENIOR SUBORDINATED DEBENTURE
                              DUE FEBRUARY 15, 2010

Interest Payment Dates:    February 15 and August 15

Record Dates:              February 1 and August 1





                                       A-2
<PAGE>   87
Dated:  February           , 1999           DEL WEBB CORPORATION


                                            By____________________________
                                              Name:
                                              Title:


                                            By____________________________
                                              Name:
                                              Title:


This is one of the Securities mentioned in the within-mentioned Indenture:

BANK OF MONTREAL TRUST
  COMPANY, as Trustee



By_________________________________
        Authorized Signatory



     (SEAL)




                                       A-3
<PAGE>   88
                               (Back of Security)


           10 1/4% SENIOR SUBORDINATED DEBENTURE DUE FEBRUARY 15, 2010

         1. INTEREST. Del Webb Corporation, a Delaware corporation (the
"Company"), promises to pay interest on the principal amount of this Security at
the rate per annum shown above. The Company will pay interest semiannually on
February 15 and August 15 of each year, commencing August 15, 1999. Interest on
the Securities will accrue from the most recent date to which interest has been
paid or, if no interest has been paid, from the date of issuance. Interest will
be computed on the basis of a 360-day year of twelve 30-day months.

         2. METHOD OF PAYMENT. The Company will pay interest on the Securities
(except defaulted interest) to the Persons who are registered holders of
Securities at the close of business on the record date for the next interest
payment date even though Securities are cancelled after the record date and on
or before the interest payment date. Holders must surrender Securities to a
Paying Agent to collect principal payments. The Company will pay principal and
interest in money of the United States that at the time of payment is legal
tender for payment of public and private debts. However, the Company may pay
principal and interest by check payable in such money. It may mail an interest
check to a Holder's registered address.

         3. PAYING AGENT AND REGISTRAR. Bank of Montreal Trust Company (together
with any successor trustee under the indenture referred to below, the
"Trustee"), will act as Paying Agent and Registrar. The Company may change any
Paying Agent or Registrar without prior notice. Subject to certain limitations
in the Indenture, the Company or any of its subsidiaries may act in any such
capacity.

         4. INDENTURE. The Company issued the Securities under an Indenture
dated as of February 18, 1999 (the "Indenture") between the Company and the
Trustee. The terms of the Securities include those stated in the Indenture and
those made part of the Indenture by reference to the Trust Indenture Act of 1939
(15 U.S. Code Sections 77aaa-77bbbb) as in effect on the date of the Indenture.
The Securities are subject to, and qualified by, all such terms, certain of
which are summarized hereon, and Securityholders are referred to the Indenture
and such Act for a statement of such terms. The Securities are unsecured
general obligations of the Company limited to $200,000,000 in aggregate
principal amount. Capitalized terms not defined herein have the same meaning as
is given to them in the Indenture.



                                       A-4
<PAGE>   89
         5. OPTIONAL REDEMPTION. The Company may not redeem the Securities prior
to February 15, 2004. Thereafter, the Company may redeem all the Securities at
any time or some of them from time to time at the redemption prices (expressed
in percentages of principal amount) set forth below plus accrued interest to the
redemption date, if redeemed during the 12-month period beginning February 15 of
the years starting with the year indicated below.

<TABLE>
<CAPTION>
                  Year                        Price (% of par)
                  ----                        ----------------

<S>                                           <C>
                  2004                        105.125
                  2005                        103.844
                  2006                        102.563
                  2007                        101.281
                  2008 and thereafter         100.000
</TABLE>

         6. NOTICE OF REDEMPTION. Notice of redemption will be mailed at least
30 days but not more than 60 days before the redemption date to each holder of
Securities to be redeemed at his or her registered address. Securities in
denominations larger than $1,000 may be redeemed in part but only in whole
multiples of $1,000. In the event of a redemption of less than all of the
Securities, the Securities will be chosen for redemption by the Trustee pro
rata, by lot or by another means that is in compliance with the requirements of
the principal national securities exchange, if any, on which the Securities are
listed. On and after the redemption date, interest ceases to accrue on
Securities or portions of them called for redemption unless the Company defaults
in the payment of the redemption price.

         If this Security is redeemed subsequent to a record date with respect
to any interest payment date specified above and on or prior to such interest
payment date, then any accrued interest will be paid to the person in whose name
this Security is registered at the close of business on such record date.

         7. CHANGE OF CONTROL. Upon a Change of Control, the Company shall make
a Change of Control Offer to purchase all outstanding Securities at a price
equal to 101% of the aggregate principal amount of the Securities, plus accrued
and unpaid interest to the date of purchase, such offer to be made as provided
in the Indenture. To accept the Change of Control Offer, the Holder hereof must
comply with the terms thereof, including surrendering this Security, with the
"Option of Holder to Elect Purchase" portion hereof completed, to the Company, a
depositary, if appointed by the Company, or a Paying Agent, at the address
specified in the notice


                                       A-5
<PAGE>   90
of the Change of Control Offer mailed to Holders as provided in the Indenture,
prior to termination of the Change of Control Offer.

         8. NET WORTH. If the Company's Consolidated Tangible Net Worth at the
end of each of any two consecutive fiscal quarters (the last day of the second
such fiscal quarter being referred to as a Deficiency Date) is less than $125
million, the Company shall offer to purchase (a "Net Worth Offer") 10% of the
principal amount of Securities originally issued under the Indenture (or such
lesser amount as may be outstanding at the time the Net Worth Offer is made) at
a purchase price equal to 100% of the aggregate principal amount thereof, plus
accrued and unpaid interest to the purchase date, such Net Worth Offer to be
made as provided in the Indenture; provided, however, that no such Net Worth
Offer shall be required if, after the Deficiency Date but prior to the timely
delivery of the Officers' Certificate required by the Indenture, capital is
contributed or otherwise paid to the Company or its Restricted Subsidiaries
sufficient to increase the Company's Consolidated Tangible Net Worth to $125
million or more. To accept the Net Worth Offer, the Holder hereof must comply
with the terms thereof, including surrendering this Security, with the "Option
of Holder to Elect Purchase" portion hereof completed, to the Company, a
depositary, if appointed by the Company, or a Paying Agent, at the address
specified in the notice of the Net Worth Offer mailed to the Holders as provided
in the Indenture, prior to termination of the Net Worth Offer. In no event
shall the Company's failure to meet the minimum Consolidated Tangible Net Worth
at the end of any fiscal quarter be counted towards the making of more than one
Net Worth Offer.

         9. SUBORDINATION. To the extent set forth in Article 11 of the
Indenture, the Securities are subordinated to Senior Debt, which means all
present or future Debt (defined below) created, incurred, assumed or guaranteed
(to the extent of the guarantee) by the Company (and any renewals, extensions or
refundings thereof), unless the instrument under which such Debt is created,
incurred, assumed or guaranteed provides that such Debt is not senior or
superior in right of payment to the Securities. Notwithstanding anything to the
contrary in the foregoing, Senior Debt shall not include (i) any Debt of the
Company to any of its subsidiaries, (ii) any Debt of the Company or guarantees
of Debt of the Company which by its terms or the terms of the instrument
creating or evidencing it expressly provides that such Debt or guarantee is
expressly subordinated in right of payment to any other Debt of the Company,
(iii) the Outstanding Debentures or (iv) guarantees by the Company of Debt (a)
outstanding at the date of the Indenture or (b) which may be outstanding in the
future, except that Senior Debt shall include any present and future guarantees
that provide by their terms that they constitute Senior Debt and the Repayment
Guaranty (Limited) dated as of June 30, 1992, from the Company to Bank One,


                                       A-6
<PAGE>   91
Arizona, NA with respect to certain indebtedness of The Villages at Desert
Hills, Inc. Debt of any Person is any indebtedness, contingent or otherwise, (x)
in respect of borrowed money (whether or not the recourse of the lender is to
the whole of the assets of such Person or only to a portion thereof), (y)
evidenced by bonds, notes, debentures or similar instruments (except any of the
foregoing that constitutes a trade payable) or (z) evidenced by letters of
credit. To the extent provided in the Indenture, Senior Debt must be paid
before the Securities may be paid. The Company agrees, and each Securityholder
by accepting a Security agrees, to the subordination and authorizes the Trustee
to give it effect.

         10. DENOMINATIONS, TRANSFER, EXCHANGE. The Securities are in registered
form without coupons in denominations of $1,000 and integral multiples of
$1,000. The transfer of Securities may be registered and Securities may be
exchanged as provided in the Indenture. As a condition of transfer, the
Registrar may require a Holder, among other things, to furnish appropriate
endorsements and transfer documents and the Company may require a Holder to pay
any taxes and fees required by law or permitted by the Indenture. The Registrar
need not exchange or register the transfer of any Security or portion of a
Security selected for redemption. Also, it need not exchange or register the
transfer of any Securities for a period of 15 days before a selection of
Securities to be redeemed.

         11. PERSONS DEEMED OWNERS. The registered Holder of a Security may be
treated as its owner for all purposes. Owners of beneficial interests in a
Global Security, as such, are not registered Holders under the Indenture and
will not be entitled to the rights of registered Holders hereunder or under the
Indenture.

         12. AMENDMENTS AND WAIVERS. Subject to certain exceptions, the
Indenture or the Securities may be amended with the consent of the Holders of a
least a majority in principal amount of the then outstanding Securities and any
existing default may be waived with the consent of the Holders of a majority in
principal amount of the then outstanding Securities. Without the consent of any
Securityholder, the Indenture or the Securities may be amended: to cure any
ambiguity, defect or inconsistency; to provide for assumption of the Company's
obligations to Securityholders; to make any change that does not adversely
affect the rights of any Securityholder; to provide for uncertificated
Securities in addition to certificated Securities; to surrender a right or power
conferred by the Indenture upon the Company; or to modify the Indenture to
effect its qualification under the Trust Indenture Act.



                                       A-7
<PAGE>   92
         13. DEFAULTS AND REMEDIES. An Event of Default is: default for 30 days
in payment of interest on the Securities; default in payment of principal of the
Securities; failure by the Company for 60 days (10 days with respect to failure
to comply with the Change of Control covenant) after notice to it to comply with
any of its other agreements in the Indenture or the Securities (except that with
respect to certain other covenants, such defaults shall be Events of Default
with such notice but without such passage of time); certain defaults under and
acceleration prior to maturity of certain indebtedness; certain final judgments
which remain undischarged; and certain events of bankruptcy or insolvency. If an
Event of Default occurs and is continuing, the Trustee or the Holders of at
least 25% in principal amount of the then outstanding Securities may declare all
the Securities to be due and payable immediately, except that in the case of an
Event of Default arising from certain events of bankruptcy or insolvency, all
outstanding Securities become due and payable without further action or notice.
Securityholders may not enforce the Indenture or the Securities except as
provided in the Indenture. The Trustee may require indemnity satisfactory to it
before it enforces the Indenture or the Securities. Subject to certain
limitations, Holders of a majority in principal amount of the then outstanding
Securities may direct the Trustee in its exercise of any trust or power. The
Trustee may withhold from Securityholders notice of any continuing default
(except a default in payment of principal or interest) if it determines that
withholding notice is in their interests. The Company must furnish quarterly
compliance certificates to the Trustee.

         14. TRUSTEE DEALINGS WITH THE COMPANY. The Trustee or any of its
Affiliates, in their individual or any other capacities, may make or continue
loans to or guaranteed by, accept deposits from and perform services for, the
Company or its Affiliates and may otherwise deal with the Company or its
Affiliates as if it were not Trustee.

         15. NO RECOURSE AGAINST OTHERS. No director, officer, employee or
stockholder, as such, of the Company shall have any liability for any
obligations of the Company under the Securities or the Indenture or for any
claim based on, in respect of or by reason of such obligations or their
creation. Each Securityholder and each beneficial owner of an interest in a
Global Security by accepting a Security or such beneficial interest, as the case
may be, waives and releases all such liability. The waiver and release are part
of the consideration for the Securities and beneficial interests, as the case
may be.

         16. AUTHENTICATION. This Security shall not be valid until
authenticated by the manual signature of the Trustee or an authenticating agent.



                                       A-8
<PAGE>   93
         17. ABBREVIATIONS. Customary abbreviations may be used in the name of a
Securityholder or an assignee, such as: TEN CO = tenants in common, TEN ENT =
tenants by the entireties, JT TEN = joint tenants with right of survivorship and
not as tenants in common, CUST = Custodian and U/G/M/A = Uniform Gifts to Minor
Act.

         The Company will furnish to any Securityholder upon written request and
without charge a copy of the Indenture. Requests may be made to: Treasurer, Del
Webb Corporation, 6001 North 24th Street, Phoenix, AZ 85016.



                                       A-9
<PAGE>   94
                                 ASSIGNMENT FORM


         To assign this Security, fill in the form below:

(I) or (we) assign and transfer this Security to


________________________________________________________________________________
                  (Insert assignee's soc. sec. or tax I.D. no.)



________________________________________________________________________________


________________________________________________________________________________


________________________________________________________________________________


________________________________________________________________________________
              (Print or type assignee's name, address and zip code)


and irrevocably appoint_________________________________________________________

agent to transfer this Security on the books of the Company. The agent may
substitute another to act for him or her.


________________________________________________________________________________



Date:_________________       Your Signature:____________________________________


________________________________________________________________________________
        (Sign exactly as your name appears on the face of this Security)



                                      A-10
<PAGE>   95
Signature(s) must be guaranteed by an
eligible guarantor institution (banks,
stockbrokers, savings and loan
associations and credit unions) with
membership in an approved signature
guarantee medallion program pursuant
to Securities and Exchange Commission
Rule 17Ad-15 if this Security is to be
delivered, other than to and in the
name of the registered holder.



_______________________________________
      Guaranteeing Institution



                                      A-11
<PAGE>   96
                       OPTION OF HOLDER TO ELECT PURCHASE


         If you want to elect to have this Security purchased by the Company
pursuant to Section 4.14 or Section 4.15 of the Indenture and paragraph 7 or 8
of this Security, check the box: / /

         If you want to elect to have only part of this Security purchased by
the Company pursuant to Section 4.14 or Section 4.15 of the Indenture and
paragraph 7 or 8 of this Security, state the amount: $________________


Date:___________________     Your Signature:____________________________________


________________________________________________________________________________
        (Sign exactly as your name appears on the face of this Security)


Signature(s) must be guaranteed by an
eligible guarantor institution (banks,
stockbrokers, savings and loan
associations and credit unions) with
membership in an approved signature
guarantee medallion program pursuant to
Securities and Exchange Commission Rule
17Ad-15 if this Security is to be
delivered, other than to and in the
name of the registered holder.



_______________________________________
       Guaranteeing Institution




                                      A-12