<PAGE>   1
                                 LOAN AGREEMENT

         THIS LOAN AGREEMENT ("Agreement") is made this 9th day of April, 1997,
between Angeles Metal Trim Co., a California corporation ("Borrower"),
Consolidated Capital of North America, a Colorado corporation ("Consolidated
Capital") and Stone Pine Colorado, LLC, a Colorado limited liability company
("Stone Pine Colorado" and together with Consolidated Capital, the
"Guarantors") and ERB Acquisition Group, LLC, a Nebraska limited liability
company ("Lender").

                                    RECITAL

         Borrower has requested that Lender make a loan to or for the benefit
of Borrower in the amount of Three Hundred Thousand Dollars ($300,000.00), and
Lender is willing to do so on the following terms and conditions.

         NOW, THEREFORE, in consideration of the foregoing and of the terms and
conditions contained in this Agreement, Borrower and Lender agree as follows:

         1.  LOAN.

         1.1 Loan. Subject to all of the terms and conditions contained in this
Agreement, Lender agrees to advance to Borrower, on or before April 9, 1997,
the principal sum of Three Hundred Thousand Dollars ($300,000.00) (the "Loan").
The Loan, together with Borrower's obligation to pay a commitment fee of
$9,000.00 in connection with the Loan (the "Commitment Fee"), shall be
evidenced by and repayable in accordance with the terms of Borrower's
promissory note ("Note"), the form of which is attached as Exhibit A. The
Commitment Fee will be added to the principal balance of the Note and paid in
accordance with the terms of the Note.

         1.2 Equity Shares. (a) As additional consideration for the advancement
of the Loan, Consolidated Capital shall issue to Lender Common Shares of
Consolidated Capital as follows: (i) 50,000 Common Shares upon advancement of
the Loan and (ii) 10,000 Common Shares on the first day of every month
beginning with the 1st day of July, 1997 until such time as all obligations
under the Note are paid in full (collectively, the "Common Shares").

         (b) The Common Shares will not be registered under the Securities Act
of 1933, as amended (the "Securities Act"), and accordingly, will constitute
"restricted securities" for purposes of the Securities Act and Lender will not
be able to transfer such Common Shares except upon compliance with the
registration requirements of the Securities Act and applicable state securities
laws or an exemption therefrom. The certificates evidencing the Common Shares
shall contain a legend to the foregoing effect.


<PAGE>   2
         (c) Consolidated Capital, shall upon the demand of any holder of the
Common Shares, file a registration statement with the SEC to permit the sale of
the Common Shares by the holders of such shares from time to time. The holders
of the Common Shares shall also have "piggyback" registration rights.

         2.  CONDITIONS TO THE LOAN.

         2.1 Documents. The making of the Loan is conditioned upon the
execution and/or delivery to Lender of the following agreements, instruments
and documents by the parties thereto: (a) this Agreement; (b) the Note; (c) the
Guaranty in the form attached as Exhibit B (the "Guaranty"); (d) the Stock
Pledge Agreement in the form attached as Exhibit C (the "Pledge Agreement");
(e) the Security Agreement of Consolidated Capital in the form attached as
Exhibit D (the "Consolidated Capital Security Agreement"); (f) the Security
Agreement of Stone Pine Colorado in the form attached as Exhibit E (the "Stone
Pine Colorado Security Agreement"); (g) stock powers executed in blank relating
to 6,556,867 Common Shares of Consolidated Capital owned by Stone Pine
Colorado; and (h) a stock certificate for 50,000 Common Shares of Consolidated
Capital issued in the name of Lender.

         2.2 Representations and Warranties. All representations and warranties
contained in this Agreement shall be true in all material respects on and as of
the date of the making of the Loan as if such representations and warranties
had been made on and as of such date.

         2.3 Acknowledgment of Union Bank. The making of the Loan is further
conditioned upon the receipt by Lender of the acknowledgement of Union Bank of
California, N.A. ("Union Bank") to the effect that the Loan is permitted under
that certain Business Loan Agreement dated as of January 15, 1997 between
Borrower and Union Bank (the "Union Bank Agreement"). Said acknowledgment shall
be in form and substance reasonably satisfactory to Lender.

         3. SECURITY. The payment of the Note is secured by (a) the Guaranty of
even dated herewith pursuant to which Consolidated Capital and Stone Pine
Colorado guarantee the full payment and performance by Borrower of its
obligations under the Note, (b) a pledge by Stone Pine Colorado, pursuant to
the terms of the Pledge Agreement of even date herewith, of 6,556,867 Common
Shares of Consolidated Capital owned by Stone Pine Colorado, (c) the
Consolidated Capital Security Agreement of even date herewith pursuant to which
Consolidated Capital grants Borrower a security interest in all of its assets,
and (d) the Stone Pine Colorado Security Agreement of even date herewith
pursuant to which Stone Pine Colorado grants Borrower a security interest in
all of its assets.



                                       2
<PAGE>   3

         4.  REPRESENTATIONS AND WARRANTIES.

         4.1 Representations and Warranties of Borrower. Borrower represents
and warrants that as of the date of the execution of this Agreement:

         (a) Existence. Borrower is a corporation duly organized and in good
standing under the laws of the State of California and is duly qualified to do
business and is in good standing in all states where such qualification is
necessary, except for those jurisdictions in which the failure to qualify would
not, in the aggregate, have a material adverse effect on Borrower's financial
condition, results of operations or business.

         (b) Authority. The execution and delivery by Borrower of this
Agreement and the Note: (a) are within Borrower's corporate powers; (b) are
duly authorized by Borrower's board of directors; (c) are not in contravention
of the terms of Borrower's certificate of incorporation or bylaws; (d) are not
in contravention of any law or laws, or of the terms of any material indenture,
agreement or undertaking to which Borrower is a party or by which Borrower or
any of Borrower's property is bound, including without limitation, the Union
Bank Agreement; (e) do not require any governmental consent, registration or
approval; (f) do not contravene any contractual or governmental restriction
binding upon Borrower; and (g) will not result in the imposition of any lien,
charge, security interest or encumbrance upon any property of Borrower under
any existing indenture, mortgage, deed of trust, loan or credit agreement or
other material agreement or instrument to which Borrower is a party or by which
Borrower or any of Borrower's property may be bound or affected.

         (c) Binding Effect. This Agreement and the Note set forth the legal,
valid and binding obligations of Borrower and are enforceable against Borrower
in accordance with their respective terms.

         4.2 Representations and Warranties of Consolidated Capital.
Consolidated Capital represents and warrants that as of the date of the
execution of this Agreement:

         (a) Existence. Consolidated Capital is a corporation duly organized
and in good standing under the laws of the State of Colorado.

         (b) Authority. The execution and delivery by Consolidated Capital of
this Agreement, the Guaranty and the Consolidated Capital Security Agreement:
(a) are within Consolidated Capital's corporate powers; (b) are duly authorized
by Consolidated Capital's board of directors; (c) are not in contravention of
the terms of Consolidated Capital's certificate of incorporation or bylaws; (d)
are not in contravention of any law or laws, or of the terms of any material
indenture, agreement or undertaking to which Consolidated Capital is a party or
by which Consolidated Capital or any of Consolidated Capital's property is
bound; (e) do not require any governmental consent, registration or approval;
(f) do not contravene any



                                       3

<PAGE>   4

contractual or governmental restriction binding upon Consolidated Capital; and
(g) will not, except as contemplated or permitted by this Agreement, result in
the imposition of any lien, charge, security interest or encumbrance upon any
property of Consolidated Capital under any existing indenture, mortgage, deed
of trust, loan or credit agreement or other material agreement or instrument to
which Consolidated Capital is a party or by which Consolidated Capital or any
of Consolidated Capital's property may be bound or affected.

         (c) Binding Effect. This Agreement, the Guaranty and the Consolidated
Capital Security Agreement set forth the legal, valid and binding obligations
of Consolidated Capital and are enforceable against Consolidated Capital in
accordance with their respective terms.

         4.3 Representations and Warranties of Stone Pine Colorado. Stone Pine
Colorado represents and warrants that as of the date of the execution of this
Agreement:

         (a) Existence. Stone Pine Colorado is a limited liability company
organized and in good standing under the laws of the State of Colorado.

         (b) Authority. The execution and delivery by Stone Pine Colorado of
this Agreement, the Pledge Agreement, the Guaranty and the Stone Pine Colorado
Security Agreement: (a) are within Stone Pine Colorado's powers; (b) are duly
authorized by Stone Pine Colorado; (c) are not in contravention of the terms of
Stone Pine Colorado's operating agreement or similar documents; (d) are not in
contravention of any law or laws, or of the terms of any material indenture,
agreement or undertaking to which Stone Pine Colorado is a party or by which
Stone Pine Colorado or any of Stone Pine Colorado's property is bound; (e) do
not require any governmental consent, registration or approval; (f) do not
contravene any contractual or governmental restriction binding upon Stone Pine
Colorado; and (g) will not, except as contemplated or permitted by this
Agreement, result in the imposition of any lien, charge, security interest or
encumbrance upon any property of Stone Pine Colorado under any existing
indenture, mortgage, deed of trust, loan or credit agreement or other material
agreement or instrument to which Stone Pine Colorado is a party or by which
Stone Pine Colorado or any of Stone Pine Colorado's property may be bound or
affected.

         (c) Binding Effect. This Agreement, the Pledge Agreement, the Guaranty
and the Stone Pine Colorado Security Agreement set forth the legal, valid and
binding obligations of Stone Pine Colorado and are enforceable against Stone
Pine Colorado in accordance with their respective terms.

         4.4 Investment Representations of Lender. Lender represents and
warrants to Consolidated Capital as follows:

         (a) Lender acknowledges that you have advised Lender that the Common
Shares have not been registered under the Securities Act or any other
securities regulation laws of any state and that your reliance on the
availability of certain exemptions from registration is based in



                                       4

<PAGE>   5

part on the representations made by Lender in this Agreement.

         (b) Lender hereby represents to you that Lender is acquiring the
Common Shares for the account of Lender for investment only and not with a view
to resell or otherwise distribute such Common Shares, and that Lender is not
acquiring the Common Shares on behalf of any other person or entity. Lender
further represents that Lender does not intend to resell, transfer or dispose
of all or any part of the Common Shares without registration under the
Securities Act or without an opinion from counsel acceptable to Consolidated
Capital, that registration is not required, and Lender represents that it is
able to bear the economic risk of this investment for an indefinite period of
time under these circumstances.

         (c) Lender further acknowledges that the Common Shares are "restricted
securities" as that term is defined in Rule 144 of the General Rules and
Regulations under the Securities Act. Lender understands that stop transfer
instructions will be issued to the transfer agent for Consolidated Capital's
stock, and Lender consents to the placing of a legend in substantially the
following form on the back of the certificate issued to Lender:

                  THE SHARES REPRESENTED BY THIS STOCK CERTIFICATE HAVE BEEN
                  ISSUED WITHOUT REGISTRATION UNDER THE SECURITIES ACT OF 1933,
                  AS AMENDED, OR ANY OTHER STATE LAWS REGULATING THE ISSUANCE
                  OF SECURITIES AND ARE PURCHASED PURSUANT TO AN INVESTMENT
                  REPRESENTATION BY THE PURCHASER THEREOF. THESE SHARES SHALL
                  NOT BE OFFERED, SOLD, PLEDGED, HYPOTHECATED, DONATED, OR
                  OTHERWISE TRANSFERRED, WHETHER OR NOT FOR CONSIDERATION, BY
                  THE PURCHASER IN THE ABSENCE OF AN EFFECTIVE REGISTRATION
                  STATEMENT FOR SUCH SHARES EXCEPT UPON THE ISSUANCE TO THE
                  COMPANY OF A FAVORABLE OPINION OF ITS COUNSEL TO THE EFFECT
                  THAT SUCH TRANSFER SHALL NOT BE IN VIOLATION OF THE
                  SECURITIES ACT OF 1933, AS AMENDED, AND APPLICABLE STATE
                  SECURITIES LAWS.

         (d) Lender agrees to hold harmless and indemnify Consolidated Capital
for any and all liabilities resulting to it through violation by Lender of the
above warranties and representations.

         5.  DEFAULT AND RIGHTS AND REMEDIES.

         5.1 Default and Rights and Remedies. Upon the occurrence of default,
Lender shall have the rights and remedies set forth in the Note, the Pledge
Agreement, the Guaranty, the Consolidated Capital Security Agreement, the Stone
Pine Colorado Security Agreement and the rights and remedies available to
Lender under applicable law.



                                       5

<PAGE>   6

         6.  MISCELLANEOUS.

         6.1 Reliance by Lender. All covenants, agreements, representations and
warranties made by Borrower and Guarantors shall, notwithstanding any
investigation by Lender, be deemed to be material to and to have been relied
upon Lender.

         6.2 Parties. Whenever in this Agreement there is reference made to any
of the parties, such reference shall be deemed to include, wherever applicable,
a reference to the respective successors and assigns of Borrower, Guarantors
and Lender.

         6.3 Applicable Law; Severability. THIS AGREEMENT SHALL BE CONSTRUED IN
ALL RESPECTS IN ACCORDANCE WITH, AND GOVERNED BY, THE LAWS AND DECISIONS OF THE
STATE OF NEBRASKA. EACH PARTY TO THIS AGREEMENT HEREBY CONSENTS TO JURISDICTION
AND VENUE IN ANY CONTROVERSY INVOLVING THIS AGREEMENT IN FEDERAL OR STATE COURT
SITTING IN THE CITY OF OMAHA, NEBRASKA. Wherever possible, each provision of
this Agreement shall be interpreted in such manner as to be effective and valid
under applicable law, but if any provision of this Agreement shall be
prohibited by or invalid under applicable law, such provision shall be
ineffective only to the extent of such prohibition or invalidity, without
invalidating the remainder of such provisions or the remaining provisions of
this Agreement.

         6.4 Maximum Interest. It is expressly stipulated and agreed to be the
intent of Borrower and Lender at all times to comply with the applicable law
governing the maximum rate of interest payable on or in connection with all
indebtedness and transactions hereunder (or applicable United States federal
law to the extent that it permits Lender to contract for, charge, take, reserve
or receive a greater amount of interest). If the applicable law is ever
judicially interpreted so as to render usurious any amount of money or other
consideration called for hereunder, or contracted for, charged, taken, reserved
or received with respect to any loan or advance hereunder, or if acceleration
of the maturity of the Loan or the indebtedness hereunder or if any prepayment
by Borrower results in Borrower's having paid any interest in excess of that
permitted by law, then it is Borrower's and Lender's express intent that all
excess cash amounts theretofore collected by Lender be credited on the
principal balance of the Loan (or if the Loan has been or would thereby be paid
in full, refunded to Borrower), and the provisions of this Agreement
immediately be deemed reformed and the amounts thereafter collectible hereunder
reduced, without the necessity of the execution of any new document, so as to
comply with the applicable law, but so as to permit the recovery of the fullest
amount otherwise called for hereunder. The right to accelerate maturity of the
Loan does not include the right to accelerate any interest which has not
otherwise accrued on the date of such acceleration, and Lender does not intend
to collect any unearned interest in the event of acceleration.



                                       6
<PAGE>   7
IN WITNESS WHEREOF, this Agreement has been duly executed as of the day and
year first above written.


                                       ANGELES METAL TRIM CO.
                                       a California corporation

                                       By:  /s/ Donald R. Jackson
                                            ----------------------------------
                                       Name:  Donald R. Jackson
                                              --------------------------------
                                       Title:  Treasurer
                                               -------------------------------


                                       CONSOLIDATED CAPITAL OF NORTH   
                                       AMERICA, INC.,
                                       a Colorado corporation

                                       By:  /s/ Thompson H. Rogers
                                            ----------------------------------
                                       Name:  Thompson H. Rogers
                                              --------------------------------
                                       Title:  Chairman
                                               -------------------------------


                                       STONE PINE COLORADO, LLC
                                       a Colorado limited liability company

                                       By:  /s/ W. Duke DeGrassi
                                            ----------------------------------
                                       Name:  W. Duke DeGrassi
                                              --------------------------------
                                       Title:  Executive Vice President
                                               -------------------------------


                                       ERB ACQUISITION GROUP, LLC
                                       a Nebraska limited liability company

                                       By:  /s/ Paul Bagley
                                            ----------------------------------
                                       Name:  Paul Bagley
                                              --------------------------------
                                       Title:  Partner
                                               -------------------------------



                                       7
<PAGE>   8
                                  Exhibit A to
                                 Loan Agreement


                                      Note

                            (See Exhibit No. 10.26)


<PAGE>   9
                                  Exhibit B to
                                 Loan Agreement


                                    Guaranty

                            (See Exhibit No. 10.27)



<PAGE>   10
                                  Exhibit C to
                                 Loan Agreement


                                Pledge Agreement


<PAGE>   11
                                PLEDGE AGREEMENT

         THIS PLEDGE AGREEMENT dated as of April 9, 1997, is made and delivered
by Stone Pine Colorado, LLC, a Colorado limited liability company ("Stone Pine
Colorado") in favor of ERB Acquisition Group, LLC, a Nebraska limited liability
company ("Lender").

         A. Angeles Metal Trim Co. ("Borrower"), a wholly owned subsidiary of
Consolidated Capital of North America, Inc. ("Consolidated Capital"), has
entered into a Loan Agreement dated as of the date hereof (the "Loan
Agreement") by and among Borrower, Consolidated Capital, Stone Pine Colorado
and Lender, pursuant to which Lender has agreed to make a loan to or for the
benefit of Borrower which loan is evidenced by a Promissory Note of the
Borrower dated the date hereof in the aggregate principal amount of $309,000.00
(the "Note").

         B. Stone Pine Colorado is the beneficial owner of approximately 42% of
the outstanding Common Shares of Consolidated Capital.

         C. To induce the Lender to make the Loan, and for other good and
valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, Stone Pine Colorado is willing to grant to Lender a security
interest in the Collateral (as hereinafter defined).

         NOW, THEREFORE, in consideration of the foregoing premises and
intending to be legally bound hereby, the undersigned agrees as follows:

         1. Pledge. Stone Pine Colorado hereby grants to Lender a security
interest in the following property (collectively, the "Collateral"):

            (a) 6,556,867 Common Shares of Consolidated Capital and the
certificates or the instruments representing such property and all dividends,
interest, or other distributions paid or payable other than in cash in respect
of, and instruments and other property received, receivable or otherwise
distributed in respect of, or in exchange for any or all of such property; and

            (b) all proceeds of any of the foregoing.

         2. Security for Obligations. The security interest granted by this
Agreement secures the payment and performance of Borrower's obligations under
the Loan Agreement and the Note and the payment of all liabilities of Borrower
to Lender, whether absolute or contingent, matured or unmatured, direct or
indirect, similar or dissimilar, due or to become due arising under the Loan
Agreement, the Note and the Guaranty of even date herewith of Consolidated
Capital and Stone Pine Colorado in favor of Lender (all such payment and
performance obligations are hereinafter referred to as the "Obligations").


<PAGE>   12
         3. Delivery of Collateral.

            (a) All certificates representing or evidencing the Collateral
have been or shall be delivered to and held by Lender pursuant hereto and shall
be duly endorsed to Lender or shall be otherwise in suitable form for transfer
by delivery, or shall be accompanied by duly executed instruments of transfer
or assignment in blank, in form and substance satisfactory to Lender.

            (b) This Agreement shall terminate and all certificates or
instruments representing or evidencing the Collateral shall be delivered to
Stone Pine Colorado upon payment in full of all Obligations.

         4. Further Assurances. Stone Pine Colorado agrees that at any time and
from time to time, Stone Pine Colorado will promptly execute and deliver all
further instruments and documents, and take all further action that Lender may
reasonably request, in order to perfect and protect any security interest
granted or purported to be granted hereby or to enable Lender to exercise and
enforce the rights and remedies hereunder with respect to any of the
Collateral.

         5. Representations and Warranties. Stone Pine Colorado hereby
represents and warrants that Stone Pine Colorado has all right, title and
interest in and to the property now constituting the Collateral, and will have
all right, title and interest in and to any property subsequently constituting
the Collateral pursuant to the terms hereof, in each case free and clear of any
liens, claims, security interests, and other encumbrances and free and clear of
any warrants, options, and other rights.

         6. Voting Rights; Dividends, Etc.

            (a) So long as no Event of Default (as herein defined) shall have
occurred and be continuing:

                (i) Stone Pine Colorado shall be entitled to exercise any and 
all of Stone Pine Colorado's voting and other consensual rights pertaining to
the Collateral or any part thereof for any purpose not inconsistent with the
terms of this Agreement or the Note; provided, however, that Stone Pine
Colorado shall give Lender at least thirty (30) days prior written notice of
the manner in which it intends to exercise, or the reasons for refraining from
exercising, any such right which would have a material adverse effect on the
value of the Collateral; and, provided further, that Stone Pine Colorado shall
not exercise or refrain from exercising any such right if Lender advises Stone
Pine Colorado that, in Lender's reasonable judgment, such action would have a
material adverse effect on the value of the Collateral or any part thereof.

                (ii) Stone Pine Colorado shall be entitled to receive and 
retain free and clear of the security interest of Lender hereunder, any and all
of such dividends, interest and other distributions to be paid to Stone Pine
Colorado in respect of the Collateral or any part thereof, except that (A) any
and all dividends, interest or other distributions paid or payable other



                                       2

<PAGE>   13

than in cash in respect of, and instruments and other property received,
receivable or otherwise distributed in respect of, or in exchange for, any
Collateral shall also constitute Collateral and shall be promptly delivered to
Stone Pine Colorado in conformity with Section 3 hereof, and (B) any and all --

                 (1) dividends,  interest,  or other  distributions paid or 
     payable in cash in respect of any Collateral in connection with a partial
     or total liquidation or dissolution or in connection with a reduction of
     capital, capital surplus or paid-in-surplus, and

                 (2) cash paid,  payable or  otherwise  distributed  in  
     redemption of, or in exchange for, any Collateral --

received by Stone Pine Colorado shall be so received in trust for the benefit
of Lender, be segregated from the other property or funds of Stone Pine
Colorado, and be forthwith delivered to Lender in the same form as so received
(with any necessary endorsement) to be held as Collateral and applied as
provided in Section 11(ii) hereof.

         (b) Upon the occurrence and during the continuance of an Event of
Default:

             (i) all  rights  of  Stone  Pine  Colorado  to  exercise  the  
voting and other consensual rights which it would otherwise be entitled to
exercise pursuant to Section 6(a)(i) hereof and to receive the dividends,
interest and other payments which it would otherwise be authorized to receive
and retain pursuant to Section 6(a)(ii) hereof shall cease and all such rights
shall thereupon become vested in Lender which shall thereupon have the sole
right to exercise such consensual rights and to receive such dividends,
interest, and other payments to be held as cash Collateral and applied as
provided in Section 11(ii) hereof; and

             (ii) all dividends, interest and other payments which are 
received by Stone Pine Colorado contrary to the provisions of paragraph (i) of
this Section 6(b) shall be received in trust for the benefit of Lender, shall
be segregated from other funds of Stone Pine Colorado, and shall be forthwith
paid over to Lender in the same form as so received (with any necessary
endorsement) to be held as cash Collateral and applied as provided in Section
11(ii) hereof.

         7. Transfers and Liens. Stone Pine Colorado will not, without the
written consent of Lender, (a) sell or otherwise dispose of, or grant any
option with respect to, any of the Collateral, or (b) create or permit to exist
any lien, security interest, or other charge or encumbrance upon or with
respect to any of the Collateral.

         8. Lender Appointed Attorney-in-Fact. Stone Pine Colorado hereby
appoints Lender as Stone Pine Colorado's attorney-in-fact, with full authority
in the place and stead of Stone Pine Colorado and in the name of Stone Pine
Colorado or otherwise, and from time to time in



                                       3

<PAGE>   14

Lender's discretion to take any action and to execute any instrument which
Lender may deem necessary or advisable to accomplish the purposes of this
Agreement. In its capacity as such attorney-in-fact, Lender shall not be liable
for any acts or omissions, nor for any error of judgment or mistake of fact or
law, but only for bad faith, willful misconduct or gross negligence. This
power, being coupled with an interest, is irrevocable until all Obligations
have been fully satisfied.

         9. Lender May Perform. If Stone Pine Colorado fails to perform any
agreement contained herein, Lender may itself perform, or cause performance of,
such agreement.

         10. Lender's Duties. The powers conferred on Lender hereunder are
solely to protect its interests in the Collateral and shall not impose any duty
to exercise any such powers. Except for the safe custody of any Collateral in
its possession and the accounting for moneys actually received by it hereunder,
Lender shall not have any duty as to any Collateral or as to the taking of any
necessary steps to preserve rights against any parties or any other rights
pertaining to any Collateral. Without limiting the generality of the foregoing,
Lender shall not have any responsibility for ascertaining or taking action with
respect to calls, conversions, exchanges, maturities, tenders or other matters
relating to any Collateral, whether or not Lender has or is deemed to have
knowledge of such matters.

         11. Events of Default; Remedies. The term "Event of Default," as used
herein, shall mean: (a) any "event of default" under and as defined in the
Note; (b) any warranty or representation contained in this Agreement or the
Loan Agreement shall prove to have been false or incorrect or breached in any
material respect on the date as of which made; and (c) any violation by the
Stone Pine Colorado in any material respect of any covenant contained in this
Agreement or the Loan Agreement provided however that, no Event of Default
shall have occurred under Subsection (b) or (c) of this Section 11 if: (i) such
violation is capable of being cured, and (ii) such violation is cured within
ten (10) days. If an Event of Default has occurred, then:

             (i) Lender may exercise in respect of the Collateral, in addition
to other rights and remedies provided for herein or otherwise available to it,
all the rights and remedies of a secured party on default under the Uniform
Commercial Code as in effect in the State of Nebraska (the "Code") and other
applicable laws and agreements and also may, without notice except as specified
below, sell the Collateral or any part thereof in one or more parcels at public
or private sale for cash, on credit, or for future delivery, and upon such
other terms as Lender may deem commercially reasonable. Stone Pine Colorado
agrees that at least fifteen days notice to Stone Pine Colorado of the time and
place of any public sale or the time after which any private sale is to be made
shall be given and shall constitute reasonable notification. Lender shall not
be obligated to make any sale of Collateral regardless of notice of sale having
been given. Lender may adjourn any public or private sale from time to time by
announcement at the time and place fixed therefor, and such sale may, without
further notice, be made at the time and place to which it was so adjourned.



                                       4

<PAGE>   15

             (ii) Any cash held by Lender as Collateral and all cash proceeds
received by Lender in respect of any collection from, or other realization upon
all or any part of the Collateral in the discretion of Lender, may be held by
Lender as collateral for, and/or then or at any time thereafter applied in
whole or in part by Lender against, all or any part of the Obligations in such
order as Lender shall elect. Any surplus of such cash or cash proceeds held by
Lender and remaining after payment in full the Obligations shall be paid over
to Stone Pine Colorado or to whomsoever may be lawfully entitled to receive
such surplus.

         12. Private Sale. Lender acknowledges and recognizes that Lender may
be unable to effect a public sale of all or a part of the Collateral and may be
compelled to resort to one or more private sales to a restricted group of
purchasers who will be obligated to agree, among other things, to acquire the
Collateral for their own account, for investment and not with a view to the
distribution or resale thereof. Lender acknowledges that any such private sales
may be at prices and on terms less favorable to Lender than those of public
sales, and agrees that such private sales shall be deemed to have been made in
a commercially reasonable manner and that Lender has no obligation to delay
sale of any Collateral to permit the issuer thereof to register it for public
sale under the Securities Act of 1933, as from time to time amended, even if
the issuer is willing to do so.

         13. Amendments, Indulgences, Etc. No amendment or waiver of any
provision of this Agreement nor consent to any departure by Lender therefrom
shall in any event be effective unless the same shall be in writing and signed
by Lender, and then such waiver or consent shall be effective only in the
specific instance and for the specific purpose for which given. No failure or
delay on the part of Lender in the exercise of any right, power, or remedy
under this Agreement shall constitute a waiver thereof, or prevent the exercise
thereof in that or any other instance.

         14. Continuing Security Interest. This Agreement creates a continuing
security interest in the Collateral and shall (b) be binding upon Stone Pine
Colorado, and its successors and assigns and (b) inure to the benefit of Lender
and its successors, transferees and assigns. The execution and delivery of this
Agreement shall in no manner impair or affect any other security (by
endorsement or otherwise) for the payment or performance of the Obligations and
no security taken hereafter as security for payment or performance of the
Obligations shall impair in any manner or affect this Agreement or the security
interest granted hereby, all such present and future additional security to be
considered as cumulative security. Any of the Collateral may be released from
this Agreement without altering, varying, or diminishing in any way this
Agreement or the security interest granted hereby as to the Collateral not
expressly released, and this Agreement and such security interest shall
continue in full force and effect as to all of the Collateral not expressly
released.

         15. Nebraska Law to Govern. THIS AGREEMENT SHALL BE CONSTRUED IN ALL
RESPECTS IN ACCORDANCE WITH, AND GOVERNED BY, THE LAWS AND



                                       5

<PAGE>   16

DECISIONS OF THE STATE OF NEBRASKA. STONE PINE COLORADO HEREBY CONSENTS TO
JURISDICTION AND VENUE IN ANY CONTROVERSY INVOLVING THIS AGREEMENT IN FEDERAL
OR STATE COURT SITTING IN THE CITY OF OMAHA, NEBRASKA. Unless otherwise defined
herein, terms defined in the Code as in effect on the date hereof are used
herein as therein defined as of such date.

         16. Severability. The provisions of this Agreement are independent of
and separable from each other, and no such provision, shall be altered or
rendered invalid or unenforceable by virtue of the fact that for any reason any
other such provision may be invalid or unenforceable in whole or in part.

         IN WITNESS WHEREOF, this Agreement has been duly executed as of the
day and year first above written.

                                       STONE PINE COLORADO, LLC
                                       a Colorado limited liability company

                                       By: /s/ W. Duke DeGrassi
                                           ----------------------------------
                                       Name: W. Duke DeGrassi
                                             --------------------------------
                                       Title: Executive Vice President
                                              -------------------------------


STATE OF Colorado:
                     SS:
COUNTY OF Denver:

Subscribed to and sworn
before me this 23rd day
of April, 1997
/s/ Jeanette L. Avery
---------------------
   (notary public)

My Commission Expires 7/17/00



                                       6
<PAGE>   17
                                  Exhibit D to
                                 Loan Agreement


                   Security Agreement of Consolidated Capital

                            (See Exhibit No. 10.28)


<PAGE>   18
                                  Exhibit E to
                                 Loan Agreement


                   Security Agreement of Stone Pine Colorado

<PAGE>   19
                               SECURITY AGREEMENT


         THIS SECURITY AGREEMENT dated as of April 9, 1997, is made and
delivered by Stone Pine Colorado, LLC, a Colorado limited liability company
("Stone Pine Colorado") in favor of ERB Acquisition Group, LLC, a Nebraska
limited liability company ("Lender").

         A. Angeles Metal Trim Co. ("Borrower"), a wholly owned subsidiary of
Consolidated Capital of North America, Inc. ("Consolidated Capital"), has
entered into a Loan Agreement dated as of the date hereof (the "Loan
Agreement") by and among Borrower, Consolidated Capital, Stone Pine Colorado
and Lender, pursuant to which Lender has agreed to make a loan to or for the
benefit of Borrower which loan is evidenced by a Promissory Note of the
Borrower dated the date hereof in the aggregate principal amount of $309,000.00
(the "Note").

         B. To induce the Lender to make the Loan, and for other good and
valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, Stone Pine Colorado is willing to grant to Lender a security
interest in the Collateral (as hereinafter defined).

         NOW, THEREFORE, in consideration of the foregoing premises and
intending to be legally bound hereby, the undersigned agrees as follows:

         1. As security for the payment and performance of Borrower's
obligations under the Loan Agreement, the Note and the Guaranty of even date
herewith of Consolidated Capital and Stone Pine Colorado in favor of Lender
(the "Guaranty"), and the payment of all liabilities of Borrower to Lender,
whether absolute or contingent, matured or unmatured, direct or indirect,
similar or dissimilar, due or to become due arising under the Loan Agreement
and the Note (all such payment and performance obligations are hereinafter
referred to as the "Obligations") Stone Pine Colorado does hereby grant a
continuing security interest to Lender in all tangible and intangible property
of Stone Pine Colorado, whether now or hereafter owned or in existence and
wherever located (herein called "Collateral"), including without limitation,
the following:

         A. All equipment, fixtures and furniture of Stone Pine Colorado;

         B. All accounts, deposit accounts, cash, securities, instruments,
chattel paper, documents, general intangibles, and inventory, now or hereafter
owned or acquired by Stone Pine Colorado, all proceeds and insurance proceeds
of the foregoing, all guarantees and other security therefore, and all of Stone
Pine Colorado's books and records relating thereto (including computer-stored
information and all software relating thereto) and all contract rights with
third parties relating to the maintenance of any such books, records and
information. The Collateral described above will be maintained at 410 17th
Street, Suite 400, Denver, CO 80202 and any other locations;

         C. All personal property of Stone Pine Colorado of any kind whether or
not in the possession or control of Lender or its agents; and




<PAGE>   20

         D. Proceeds of any of the above-described property.

         The grant of a security interest in proceeds does not imply the right
of Stone Pine Colorado to sell or dispose of any Collateral described herein
without the express consent in writing by Lender.

         2. Stone Pine Colorado will: (a) execute such Financing Statements and
other documents and do such other acts and things, all as Lender may from time
to time require, to establish and maintain a valid security interest in
Collateral, including payment of all costs and fees in connection with any of
the foregoing when deemed necessary by Lender; (b) pay and perform promptly
when due all Obligations; (c) furnish Lender such information concerning Stone
Pine Colorado and Collateral as Lender may from time to time request, including
but not limited to current financial statements; (d) keep Collateral separate
and identifiable and at the location described herein and permit Lender and its
representatives to inspect Collateral and/or records pertaining thereto from
time to time during normal business hours; (e) not sell, assign or create or
permit to exist any lien on or security interest in Collateral in favor of
anyone other than the Lender unless Lender consents thereto in writing and at
Stone Pine Colorado's expense upon Lender's request remove any unauthorized
lien or security interest and defend any claim affecting the Collateral; (f)
pay all charges against Collateral prior to delinquency including but not
limited to taxes, assessments, encumbrances, insurance and diverse claims, and
upon Stone Pine Colorado's failure to do so Lender may pay any such charge as
it deems necessary and add the amount paid to the Obligations; (g) reimburse
Lender for any expenses including but not limited to reasonable attorney's fees
and legal expenses incurred by Lender in seeking to protect, collect or enforce
any rights in Collateral; (h) when required provide insurance in form and
amounts and with companies acceptable to Lender and when required assign the
policies or the rights thereunder to Lender; (i) maintain Collateral in good
condition and not use Collateral for any unlawful purpose; (j) at its own
expense, upon request of Lender, notify any parties obligated to Stone Pine
Colorado on any Collateral to make payment to Lender and Stone Pine Colorado
hereby irrevocably grants Lender power of attorney to make said notifications
and collections; (k) and does hereby authorize Lender to perform any and all
acts which Lender in good faith deems necessary for the protection and
preservation of Collateral or its value or Lender's security interest therein,
including transferring any Collateral into its own name and receiving the
income thereon as additional security hereunder.

         3. The term default shall mean the occurrence of any of the following
events: (a) any "event of default" under and as defined in the Note, the
Guaranty or the Pledge Agreement dated as of the date hereof by Stone Pine
Colorado in favor of Lender (the "Pledge Agreement"); (b) any warranty or
representation contained in this Agreement or the Loan Agreement shall prove to
have been false or incorrect or breached in any material respect on the date as
of which made; (c) deterioration or impairment of the value of Collateral; and
(d) any violation in any material respect of any covenant contained in this
Agreement or the Loan Agreement, provided however that, no Event of Default
shall have occurred under Subsection (b), (c) or (d) of this Section 3 if:



                                       2

<PAGE>   21

(i) such violation is capable of being cured, and (ii) such violation is cured
within ten (10) days.

         4. Whenever a default exists, Lender, at its option may: (a) without
notice accelerate the maturity of any part or all of the Obligations; (b) sell,
lease or otherwise dispose of Collateral at public or private sale, unless
Collateral is perishable and threatens to decline speedily in value or is a
type customarily sold on a recognized market, Lender will give Stone Pine
Colorado at least five (5) days prior written notice of the time and place of
any public sale or of the time after which any private sale or any other
intended disposition may be made; (c) transfer any Collateral into its own name
or that of its nominee; (d) retain Collateral in satisfaction of Obligations
secured hereby, with notice of such retention sent to Stone Pine Colorado as
required by law; (e) notify any parties obligated on any Collateral consisting
of accounts, instruments, chattel paper, choses in action or the like to make
payment to Lender and enforce collection of any Collateral herein; (f) require
Stone Pine Colorado to assemble and deliver any Collateral to Lender at a
reasonable convenient place designated by Lender; (g) apply all sums received
or collected from or on account of Collateral including the proceeds of any
sales thereof to the payment of the costs and expenses incurred in preserving
and enforcing rights of Lender including but not limited to reasonable
attorney's fees, and Obligations secured hereby in such order and manner as
Lender in its sole discretion determines; Lender shall account to Stone Pine
Colorado for any surplus remaining thereafter, and shall pay such surplus to
the party entitled thereto, including any second secured party who has made a
proper demand upon Lender and has furnished proof to Lender as requested in the
manner provided by law; and (h) exercise its lien or right of setoff in the
same manner as though the credit were unsecured. Lender shall have all the
rights and remedies of a secured party under the Uniform Commercial Code of
Nebraska in any jurisdiction where enforcement is sought, whether in Nebraska
or elsewhere. All rights, power and remedies of Lender hereunder shall be
cumulative and not alternative. No delay on the part of Lender in the exercise
of any right or remedy shall constitute a waiver thereof and no exercise by
Lender of any right or remedy shall preclude the exercise of any other right or
remedy or further exercise of the same remedy.

         5. Stone Pine Colorado waives: (a) all right to require Lender to
proceed against any other person including any person granting a security
interest to Lender or to apply any Collateral Lender may hold at any time or to
pursue any other remedy; Collateral, endorsers or guarantors may be released,
substituted or added without affecting the liability of Stone Pine Colorado
hereunder; (b) the defense of the Statute of Limitations in any action upon any
Obligations secured hereby; (c) any right of subrogation and any right to
participate in Collateral until all Obligations hereby secured have been paid
in full.

         6. Stone Pine Colorado warrants: (a) that it is or will be the lawful
owner of all Collateral free of all claims, liens or encumbrances whatsoever,
other than the security interest granted pursuant hereto; (b) all information,
including but not limited to financial statements furnished by Stone Pine
Colorado to Lender heretofore or hereafter, whether oral or written, is and
will be correct and true as of the date given; and (c) the execution, delivery
and performance hereof are within the powers of Stone Pine Colorado and have
been duly authorized.



                                       3

<PAGE>   22

         7. The right of Lender to have recourse against Collateral shall not
be affected in any way by the fact that the credit is secured by a mortgage,
deed of trust or other lien upon real property.

         8. Stone Pine Colorado may terminate this Agreement at any time upon
written notice to Lender of such termination; provided however, that such
termination shall not affect Obligations then outstanding, any extensions or
renewals thereof, nor the security interest granted herein which shall continue
until such outstanding Obligations are satisfied in full.

         9. This Agreement shall inure to the benefit of and bind Lender, its
successors and assigns and the undersigned, their respective heirs, executors,
administrators and successors in interest. Upon transfer by Lender of any part
of the Obligations secured hereby, Lender shall be fully discharged from all
liability with respect to Collateral transferred therewith.

         10. Whenever possible each provision of this Agreement shall be
interpreted in such manner as to be effective and valid under applicable law,
but, if any provision of this agreement shall be prohibited or invalid under
applicable law, such provisions shall be ineffective to the extent of such
prohibition or invalidity without invalidating the remainder of such or the
remaining provisions of this Agreement.

         11. Governing Law. THIS SECURITY AGREEMENT SHALL BE CONSTRUED IN ALL
RESPECTS IN ACCORDANCE WITH, AND GOVERNED BY, THE LAWS AND DECISIONS OF THE
STATE OF NEBRASKA. STONE PINE COLORADO HEREBY CONSENTS TO JURISDICTION AND
VENUE IN ANY CONTROVERSY INVOLVING THIS AGREEMENT IN FEDERAL OR STATE COURT
SITTING IN THE CITY OF OMAHA, NEBRASKA.


                                       STONE PINE COLORADO, LLC
                                       a Colorado limited liability company


                                       By: /s/ W. Duke DeGrassi
                                           ----------------------------------
                                       Name: W. Duke DeGrassi
                                             --------------------------------
                                       Title:  Executive Vice President
                                               ------------------------------

STATE OF Colorado:
      SS:
COUNTY OF  Denver:
Subscribed to and sworn
before me this 23rd day
of April, 1997
/s/ Jeanette L. Avery
-----------------------
    (notary public)



                                       4