<PAGE>   1
================================================================================


                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549


                                    FORM 10-Q

                QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                      For the quarter ended March 31, 2001

                          Commission File No. 333-81139

                      American Plumbing & Mechanical, Inc.
             (Exact name of Registrant as Specified in Its Charter)

                 DELAWARE                                        76-0577626
       (State or Other Jurisdiction                             (IRS Employer
     of Incorporation or Organization)                       Identification No.)

           1950 LOUIS HENNA BLVD.                                   78664
              ROUND ROCK, TEXAS                                  (ZIP Code)
  (Address of Principal Executive Offices)



                                 (512) 246-5260
              (Registrant's telephone number, including area code)




         Indicate by check mark whether the registrant: (1) has filed all
reports required to be filed by Section 13 of 15 (d) of the Securities Exchange
Act of 1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. Yes [X]

         As of March 31, 2001, there were outstanding 13,271,383 shares of
common stock and 331,116 shares of Class B common stock of the Registrant.



================================================================================

<PAGE>   2

              AMERICAN PLUMBING & MECHANICAL, INC. AND SUBSIDIARIES

                 FORM 10-Q FOR THE QUARTER ENDED MARCH 31, 2001

                                TABLE OF CONTENTS



<TABLE>
<S>                                                                                                                  <C>
Part I - Financial Information........................................................................................2
   ITEM 1.  Financial Statements......................................................................................2
   ITEM 2.  Management's Discussion and Analysis of Financial Condition and Results of Operations.....................7
   ITEM 3.  Quantitative and Qualitative Disclosures About Market Risks...............................................9


Part II - Other Information..........................................................................................11
   ITEM 1. - Legal Proceedings.......................................................................................11
   ITEM 2. - Changes in Securities and Use of Proceeds...............................................................11
   ITEM 3. - Defaults Upon Senior Securities.........................................................................11
   ITEM 4. - Submission of Matters to a Vote of Security Holders.....................................................11
   ITEM 5. - Other Information.......................................................................................11
   ITEM 6. - Exhibits and Reports on Form 8-K........................................................................11


SIGNATURES...........................................................................................................12
</TABLE>



                                       1
<PAGE>   3

                         PART I - FINANCIAL INFORMATION

ITEM 1.  Financial Statements

              AMERICAN PLUMBING & MECHANICAL, INC. AND SUBSIDIARIES

                           CONSOLIDATED BALANCE SHEETS

                        (In Thousands, Except Share Data)

<TABLE>
<CAPTION>
                                                                                             December 31,       March 31,
                                                                                                 2000             2001
                                                                                             ------------     ------------
                                        ASSETS                                                                (Unaudited)
<S>                                                                                          <C>              <C>

CURRENT ASSETS:
   Cash and cash equivalents                                                                 $         87     $      1,232
   Accounts receivable, net                                                                        96,616           97,568
   Inventories                                                                                      8,678            9,608
   Costs and estimated earnings in excess of billings on uncompleted contracts
                                                                                                   23,888           27,054
   Prepaid expenses and other current assets                                                        3,083            3,541
                                                                                             ------------     ------------

         Total current assets                                                                     132,352          139,003
PROPERTY AND EQUIPMENT, net                                                                        21,741           22,810
GOODWILL, net                                                                                     160,387          158,976
OTHER NONCURRENT ASSETS                                                                             3,986            4,100
                                                                                             ------------     ------------

         Total assets                                                                        $    318,466     $    324,889
                                                                                             ============     ============

                      LIABILITIES AND STOCKHOLDERS' EQUITY

CURRENT LIABILITIES:
   Accounts payable, accrued expenses and current maturities of capital lease                      57,117           60,121
     obligations
   Accounts payable, related parties, including acquisition consideration payable
                                                                                                    3,920            1,960
   Billings in excess of costs and estimated earnings on uncompleted contracts
                                                                                                   13,544           15,432
                                                                                             ------------     ------------

         Total current liabilities                                                                 74,581           77,513
LONG-TERM LIABILITIES:
   Long-term debt                                                                                 165,225          168,698
   Deferred income taxes                                                                            1,717            1,456
                                                                                             ------------     ------------

         Total liabilities                                                                        241,523          247,667
                                                                                             ------------     ------------

COMMITMENTS AND CONTINGENCIES (Note 2)
SERIES A REDEEMABLE PREFERRED STOCK, $.01 par value, $13.00 liquidation value,
   10,000,000 shares authorized, 1,048,820 shares issued and outstanding
                                                                                                   13,635           13,635
STOCKHOLDERS' EQUITY:
   Common stock, $.01 par value, 100,000,000 shares authorized, 13,271,383 shares
     issued and outstanding                                                                           133              133
   Class B common stock, $.01 par value, 5,000,000 shares authorized, 331,116 shares
     issued and outstanding                                                                             3                3
   Additional paid-in capital                                                                      41,952           42,016
   Retained earnings                                                                               21,220           21,681
   Accumulated other comprehensive income                                                              --             (246)
                                                                                             ------------     ------------

         Total stockholders' equity                                                                63,308           63,587
                                                                                             ------------     ------------

         Total liabilities and stockholders' equity                                          $    318,466     $    324,889
                                                                                             ============     ============
</TABLE>

        The accompanying notes are an integral part of these consolidated
                              financial statements.



                                       2
<PAGE>   4

              AMERICAN PLUMBING & MECHANICAL, INC. AND SUBSIDIARIES

                        CONSOLIDATED STATEMENTS OF INCOME

                                 (In Thousands)
                                   (Unaudited)


<TABLE>
<CAPTION>
                                                             Three Months Ended
                                                                  March 31,
                                                       ------------------------------
                                                           2000              2001
                                                       ------------      ------------

<S>                                                    <C>               <C>
REVENUES                                               $    125,137      $    143,394

COST OF REVENUES (including depreciation)                   102,990           120,872
                                                       ------------      ------------

         Gross profit                                        22,147            22,522

SELLING, GENERAL AND ADMINISTRATIVE EXPENSES                 11,489            14,264
GOODWILL AMORTIZATION                                         1,300             1,411
                                                       ------------      ------------

         Income from operations                               9,358             6,847

OTHER INCOME (EXPENSE):
   Interest income                                               32                36
   Interest expense                                          (4,740)           (4,726)
   Other                                                        182               135
                                                       ------------      ------------

         Other expense, net                                  (4,526)           (4,555)
                                                       ------------      ------------

INCOME BEFORE INCOME TAXES                                    4,832             2,292

PROVISION FOR INCOME TAXES                                    2,385             1,490
                                                       ------------      ------------

NET INCOME                                                    2,447               802

PREFERRED DIVIDENDS                                             341               341
                                                       ------------      ------------

NET INCOME AVAILABLE TO COMMON STOCKHOLDERS            $      2,106      $        461
                                                       ============      ============
</TABLE>


        The accompanying notes are an integral part of these consolidated
                             financial statements.



                                       3
<PAGE>   5

              AMERICAN PLUMBING & MECHANICAL, INC. AND SUBSIDIARIES


                      CONSOLIDATED STATEMENTS OF CASH FLOWS

                                 (In Thousands)
                                   (Unaudited)

<TABLE>
<CAPTION>
                                                                                          Three Months Ended
                                                                                               March 31,
                                                                                     ------------------------------
                                                                                         2000              2001
                                                                                     ------------      ------------
<S>                                                                                  <C>               <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
   Net income                                                                        $      2,447      $        802
   Adjustments to reconcile net income to net cash provided by operating
       activities-
       Depreciation and amortization                                                        2,463             2,800
       Amortization of deferred compensation expense                                          113                64
       Gain on disposal of property and equipment                                             (90)              (73)
       Deferred income taxes                                                                 (574)             (640)
       Increase (decrease) in cash flows from:
         Accounts receivable, net                                                          (3,268)             (952)
         Inventories                                                                       (1,440)             (930)
         Costs and estimated earnings in excess of billings on uncompleted
               contracts                                                                    1,979            (3,166)
         Prepaid expenses and other current assets                                            300              (372)
         Accounts payable and accrued expenses                                              8,360             2,596
         Billings in excess of costs and estimated earnings on uncompleted
               contracts                                                                   (1,766)            1,888
         Other                                                                                276                (2)
                                                                                     ------------      ------------

   Net cash provided by operating activities                                                8,800             2,015
                                                                                     ------------      ------------

CASH FLOWS FROM INVESTING ACTIVITIES:
   Additions of property and equipment                                                     (1,709)           (2,470)
   Proceeds from sale of property and equipment                                                95               139
   Earnout payments to founding company stockholders                                           --            (1,082)
   Acquisition of companies, net of cash acquired                                         (10,106)               --
                                                                                     ------------      ------------

   Net cash used in investing activities                                                  (11,720)           (3,413)
                                                                                     ------------      ------------

CASH FLOWS FROM FINANCING ACTIVITIES:
   Net borrowings on bank credit facility                                                   4,400             3,500
   Payments of long-term debt and capital lease obligations                                  (671)              (79)
   Distributions to stockholders                                                               --              (878)
                                                                                     ------------      ------------

   Net cash provided by financing activities                                                3,729             2,543
                                                                                     ------------      ------------

NET INCREASE IN CASH AND CASH EQUIVALENTS                                                     809             1,145

CASH AND CASH EQUIVALENTS, beginning of period                                                393                87
                                                                                     ------------      ------------

CASH AND CASH EQUIVALENTS, end of period                                             $      1,202      $      1,232
                                                                                     ============      ============

SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
   Cash paid for-
     Interest                                                                        $        281      $      1,755
     Income taxes                                                                             733               118
</TABLE>


        The accompanying notes are an integral part of these consolidated
                             financial statements.



                                       4
<PAGE>   6

              AMERICAN PLUMBING & MECHANICAL, INC. AND SUBSIDIARIES


             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)


1.   ORGANIZATION AND BASIS OF PRESENTATION:

         American Plumbing & Mechanical, Inc. ("AMPAM" or the "Company"), is the
largest company in the United States focused primarily on the plumbing
contracting services industry. AMPAM also provides heating, ventilation and air
conditioning ("HVAC") and mechanical contracting services. AMPAM (a Delaware
corporation) was organized in June 1998, and acquired ten U.S. businesses (the
"Founding Companies") on April 1, 1999. The acquisitions were accounted for
using the purchase method of accounting with Christianson Enterprises, Inc. and
affiliates ("Christianson") being reflected as the accounting acquiror.
Subsequently, the Company acquired the outstanding stock of three additional
companies and the assets of a fourth company. The "Subsequent Acquisitions,"
collectively with the Founding Companies are referred to as the "Acquired
Companies."

         These unaudited interim statements should be read in conjunction with
the Company's historical consolidated financial statements and related notes
included in the Annual Report on Form 10-K as filed with the Securities and
Exchange Commission for the year ended December 31, 2000.

         These unaudited interim financial statements have been prepared in
accordance with accounting principles generally accepted in the United States of
America and the rules and regulations of the Securities and Exchange Commission
for reporting interim financial information. Accordingly, they do not include
all of the information and footnotes required by accounting principles generally
accepted in the United States of America for complete financial statements. The
Company believes all adjustments necessary for a fair presentation of these
interim statements have been included and are of a normal and recurring nature.
The results of operations for interim periods are not necessarily indicative of
the results for the fiscal year.

2.   COMMITMENTS AND CONTINGENCIES:

         The Company is involved in disputes or legal actions arising in the
ordinary course of business. Management does not believe the outcome of such
legal actions will have a material adverse effect on the company's financial
position or results of operations.

         As of January 1, 2000, the Company became self insured for health care,
workers' compensation, and general, property and auto liability up to
predetermined amounts above which third party insurance applies. The Company is
fully insured through third party insurance for all other types of exposures
including an umbrella policy. The Company has not incurred significant claims or
losses on any of these insurance policies.

         Effective January 1, 2001, the company adopted Financial Accounting
Standards Board Statement No. 133, "Accounting for Derivative Instruments and
Hedging Activities," and No. 138, "Accounting for Certain Derivative Instruments
and Certain Hedging Activities," which requires the company to measure all
derivative instruments at fair value and to recognize them in the balance sheet
as an asset or liability, depending on the Company's rights or obligations under
the applicable derivative contract.

         On January 2, 2001, the Company entered into an interest rate swap
agreement, which effectively converted $30 million of its variable rate debt
under the bank agreement to fixed rate debt. The Company's risk management
policy related to this swap agreement is to hedge the exposure to interest



                                       5
<PAGE>   7

rate movements on a portion of its long-term debt. Under the swap agreements,
payments are made based on a fixed rate of 6.34% and received on a LIBOR based
variable rate (4.90% at March 31, 2001). Differentials to be paid or received
under the agreement are recognized as interest expense. The agreement matures on
December 31, 2001. The Company has designated the interest rate swap agreement
as a cash flow hedge of future interest payments on its variable rate long-term
debt.

         On March 31, 2001, the company recorded a derivative liability of
$403,827 included in the accounts payable and accrued liabilities section of the
balance sheet. A corresponding amount, net of income tax benefit of $158,000,
was recorded as a component of stockholders equity as accumulated other
comprehensive income.

3.   ACQUISITION:

         On March 1, 2000, the Company acquired the stock of Lindy Dennis
Industries and related affiliates (collectively "LDI"), headquartered in Corona,
California. LDI operates primarily as a heating, ventilation and air
conditioning ("HVAC") contractor specializing in the multifamily residential
market. The consideration paid by the Company for LDI consisted of 1,346,154
shares of the Company's common stock and approximately $12 million in cash. The
cash portion of the consideration was funded through borrowings under the
Company's existing $95 million Credit Facility.

 The Company accounted for the acquisition of LDI using the purchase method of
accounting. The results of operations of LDI are included in the accompanying
financial statements from the date of acquisition forward. The accompanying
consolidated balance sheet as of March 31, 2001, includes a final allocation of
the purchase price to the assets acquired and liabilities assumed, as well as
the amount of goodwill generated by the transaction.

         The unaudited pro forma data presented below consists of the income
statement data presented in the accompanying consolidated financial statements
plus pro forma income statement data for LDI as if the acquisition and related
financing were effective on January 1, 2000 (in thousands):

<TABLE>
<CAPTION>
                                                              Three months ended
                                                                   March 31,
                                                              ------------------
                                                                     2000
                                                                 (Pro Forma)
                                                                 ------------

<S>                                                              <C>
Revenues                                                         $    133,967
Net income available to common stockholders                             2,856
</TABLE>

4.   COMPREHENSIVE INCOME:

         Total Comprehensive Income for the three months ended March 31, 2001 is
$215 (in thousands).



                                       6
<PAGE>   8

ITEM 2. Management's Discussion and Analysis of Financial Condition and Results
of Operations

         THE FOLLOWING DISCUSSION SHOULD BE READ IN CONJUNCTION WITH THE
COMPANY'S UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS AND RELATED NOTES INCLUDED
ELSEWHERE IN THIS QUARTERLY REPORT ON FORM 10-Q AND THE CONSOLIDATED FINANCIAL
STATEMENTS AND RELATED NOTES AND OTHER DETAILED INFORMATION REGARDING THE
COMPANY INCLUDED IN THE COMPANY'S ANNUAL REPORT ON FORM 10-K FOR THE FISCAL YEAR
ENDED DECEMBER 31, 2000 AND OTHER REPORTS FILED BY THE COMPANY WITH THE
SECURITIES AND EXCHANGE COMMISSION.

         This Form 10-Q contains forward-looking statements within the meaning
of Section 27A of the Securities Act and Section 21E of the Exchange Act which
are intended to be covered by safe harbors created thereby. Readers are
cautioned that such information involves risks and uncertainties, including
those created by general market conditions, competition and the possibility that
events may occur which limit the ability of the Company to maintain or improve
its operating results. All statements, other than statements of historical
facts, included or incorporated by reference in this section that address
activities, events or developments that the Company expects or anticipates will
or may occur in the future, including such things as future capital expenditures
(including the amount and nature thereof), business strategy and measures to
implement such strategy, competitive strengths, goals, expansion and growth of
the Company's business and operations, plans, references to future success as
well as other statements which include words such as "anticipate," "believe,"
"plan," "estimate," "expect," and "intend" and other similar expressions,
constitute forward-looking statements. Although the Company believes that the
assumptions underlying the forward-looking statements contained herein are
reasonable, any of the assumptions could be inaccurate, and the inclusion of
such information should not be regarded as a representation by the Company or
any other person that the objectives and plans of the Company will be achieved.

GENERAL

         American Plumbing and Mechanical, Inc. ("AMPAM" or the "Company"), a
Delaware corporation, is the largest company in the United States focused
primarily on the plumbing contracting services industry. The Company provides
plumbing, heating, ventilation and air conditioning ("HVAC") and mechanical
contracting services to single family residential, multifamily residential and
commercial/institutional customers. On April 1, 1999, AMPAM acquired ten U.S.
companies (the "Founding Companies"), which, individually, were leading regional
providers of plumbing and mechanical contracting services, and commenced
operations as one company. AMPAM believes that by combining these regional
leaders into one organization, it has created a national provider capable of
strengthening and broadening relationships with its consolidating customer base
and enhancing its operating efficiency. The Founding Companies performed
plumbing and mechanical contracting services in 25 states for an average of
approximately 31 years prior to being acquired by AMPAM. AMPAM subsequently
acquired all of the outstanding stock of three companies and the assets of a
fourth company (the "Subsequent Acquisitions," and collectively with the
Founding Companies, the "Acquired Companies").



                                       7
<PAGE>   9

HISTORICAL

         The following unaudited historical consolidated financial information
represents the operations of all Acquired Companies from their respective dates
of acquisition. LDI was acquired on March 1, 2000, whereas all other Acquired
Companies were part of AMPAM for all of each of the three month periods
presented below.

<TABLE>
<CAPTION>
                                                                       Three months ended March 31,
                                                       ------------------------------------------------------------
                                                                  2000                              2001
                                                       ---------------------------       --------------------------
                                                                                (Unaudited)
                                                                           (Dollars in thousands)
<S>                                                    <C>              <C>              <C>             <C>
Revenues                                               $  125,137              100%      $  143,394             100%
Cost of revenues                                          102,990               82          120,872              84
                                                       ----------       ----------       ----------      ----------
Gross profit                                               22,147               18           22,522              16
Selling, general and administrative expenses               11,489                9           14,264              10
Goodwill amortization                                       1,300                1            1,411               1
                                                       ----------       ----------       ----------      ----------
Income from operations                                      9,358                8            6,847               5
Interest expense                                           (4,740)              (4)          (4,726)             (3)
Other, net                                                    214               --              171              --
                                                       ----------       ----------       ----------      ----------
Income before taxes                                         4,832                4            2,292               2
Provision for income taxes                                  2,385                2            1,490               1
                                                       ----------       ----------       ----------      ----------
Net income                                                  2,447                2              802               1
Preferred dividends                                           341               --              341              --
                                                       ----------       ----------       ----------      ----------
Net income available to common shareholders
                                                       $    2,106                2%      $      461              --%
                                                       ==========       ==========       ==========      ==========
</TABLE>

Three months ended March 31, 2000 compared to three months ended March 31, 2001

         Revenues increased $18.3 million, from $125.1 million for the three
months ended March 31, 2000 to $143.4 million for the three months ended March
31, 2001. The March 2000 acquisition of LDI accounts for $11.3 million of the
$18.3 million increase in revenue, and the remaining $7.0 million is
attributable to increased volume at the remaining companies and revenue from
start-up operations. Additionally, certain companies realized the impact of
price increases initiated in late 2000 and early 2001.

         Gross profit increased $0.4 million, from $22.1 million for the three
months ended March 31, 2000, to $22.5 million for the three months ended March
31, 2001. The increase in gross profit was attributable to the acquisition of
LDI (which accounted for $2.2 million) and increased volume of all other
companies of approximately $1.0 million, offset by increased job costs of
approximately $2.7 million, and losses from start-up operations (Denver, Dallas,
Charlotte and Houston single family operations) of approximately $0.1 million.

         Selling, general and administrative expenses increased $2.8 million,
from $11.5 million for the three months ended March 31, 2000, to $14.3 million
for the three months ended March 31, 2001. The increase was associated with the
LDI acquisition and previously announced strategic initiatives, including start
up operations.



                                       8
<PAGE>   10

         Interest expense was approximately the same in both periods reflecting
higher levels of debt offset by lower interest rates achieved through the
repurchase of the $30.0 million Senior Subordinated Notes during the later part
of fiscal 2000.

         The decrease in the provision for income taxes of $0.9 million results
from lower levels of earnings.

         Net income decreased $1.6 million, from $2.4 million for the three
months ended March 31, 2000, to $0.8 million for the three months ended March
31, 2001. The decrease in net income was due to the factors discussed above.

LIQUIDITY AND CAPITAL RESOURCES

         As of March 31, 2001, the Company had $61.5 million in working capital
and $168.7 million of outstanding long-term indebtedness, including capital
lease obligations totaling $1.7 million.

         For the three months ended March 31, 2001, net cash provided by
operating activities was $2.0 million resulting primarily from operations,
offset by increases in working capital of $0.9 million. Cash used in investing
activities was $3.4 million which primarily relates to the capital expenditures
of $2.5 million and earnout payments of $1.1 million. Cash provided by financing
activities for the three months ended March 31, 2001, was $2.5 million and was
primarily obtained from net borrowings on the Company's Credit Facility.

         On April 1, 1999, the Company entered into the Credit Facility with a
total commitment of $95 million. The Credit Facility bears interest, at the
option of the Company, at the base rate of the arranging bank plus an applicable
margin, or at LIBOR plus an applicable margin. The Credit Facility has an
initial term of three years. As of March 31, 2001, the company had borrowings of
$73.5 million and letters of credit outstanding in the amount of $0.8 million,
leaving $20.7 million available under the Credit Facility. Subsequent to the end
of the first quarter, the Company completed a two-year extension of the Credit
Facility, which will mature on March 31, 2004.

         The Company anticipates that its cash flow from operations and
borrowings under the Credit Facility will provide sufficient cash to enable the
Company to meet its working capital needs, debt service requirements, and
planned capital expenditures for property and equipment through the foreseeable
future.

SEASONALITY

         The plumbing and mechanical contracting services industry is influenced
by seasonal factors, which generally result in lower activity during winter
months than in other periods. As a result, the Company expects that its revenues
and profits will generally be lower in the first and fourth quarters of each
fiscal year, and higher in the second and third quarters.

ITEM 3. Quantitative and Qualitative Disclosures About Market Risks

         The Company is exposed to various market risks primarily related to
potential adverse changes in interest rates. In the normal course of business,
the Company employs established policies and procedures to manage this risk. The
Company is not exposed to any other significant market risks, such as foreign
currency exchange risk. The Company's exposure to changes in interest rates
primarily results



                                       9
<PAGE>   11

from its short-term and long-term debt with both fixed and floating interest
rates. The Company's debt with fixed interest rates consists of Senior
Subordinated Notes and capital leases. Our debt with variable interest rates
consists primarily of the Credit Facility.

         Effective January 1, 2001, the company adopted Financial Accounting
Standards Board Statement No. 133, "Accounting for Derivative Instruments and
Hedging Activities," and No. 138, "Accounting for Certain Derivative Instruments
and Certain Hedging Activities," which requires the company to measure all
derivative instruments at fair value and to recognize them in the balance sheet
as an asset or liability, depending on the Company's rights or obligations under
the applicable derivative contract. AMPAM utilizes certain "derivative
instruments" to manage its exposure to market risk.

         During the first quarter, the Company entered into an interest rate
swap agreement, which effectively converted $30 million of its variable rate
debt under the Credit Facility to fixed rate debt. The Company's risk management
policy related to this swap agreement is to hedge the exposure to interest rate
movements on a portion of its long-term debt. On March 31, 2001, the company
recorded a derivative liability of $403,827 included in the accounts payable and
accrued liabilities section of the balance sheet. A corresponding amount, net of
income tax benefit of $158,000, was recorded as a component of stockholders
equity as accumulated other comprehensive income. It should be noted that any
change in value of this contract, real or hypothetical, would be significantly
offset by an inverse change in the value of the variable rate (LIBOR) on the
Credit Facility.

         Other than the items mentioned above, there were no other material
quantitative or qualitative changes during the first three months of fiscal 2001
in the Company's market risk sensitive instruments.



                                       10
<PAGE>   12

                           PART II - OTHER INFORMATION

ITEM 1. - Legal Proceedings

        From time to time the Company is involved in litigation relating to
claims arising out of operations in the normal course of business. The Company
maintains insurance coverage against potential claims in an amount which
management believes to be adequate. Currently, the Company is not aware of any
legal proceedings or pending claims that management believes will have a
material adverse effect on the Company's consolidated financial position or
consolidated results of operations.

ITEM 2. - Changes in Securities and Use of Proceeds

         None.

ITEM 3. - Defaults Upon Senior Securities

         None

ITEM 4. - Submission of Matters to a Vote of Security Holders

         None

ITEM 5. - Other Information

         None

ITEM 6. - Exhibits and Reports on Form 8-K

         (a)      The exhibits to this report are listed below

         *3.1     Amended and Restated Certificate of Incorporation (American
                  Plumbing& Mechanical, Inc. Registration Statement on Form S-4
                  (File No. 333-81139), Exhibit 3.1).

         *3.2     Amended and Restated Bylaws (American Plumbing & Mechanical,
                  Inc. Registration Statement on Form S-4 (File No. 333-81139),
                  Exhibit 3.2).

         *3.3     Certificate of Designations of 10% Cumulative Redeemable
                  Convertible Preferred Stock, Series A (American Plumbing &
                  Mechanical, Inc. Registration Statement on Form S-4 (File No.
                  333-81139), Exhibit 3.3).

         *4.1     Indenture, dated May 19, 1999, by and among American Plumbing
                  & Mechanical, Inc., State Street Bank and Trust Company and
                  the other parties named therein with respect to $125,000,000
                  11 5/8% Senior Subordinated Notes due 2008 (American Plumbing
                  & Mechanical, Inc. Registration Statement on Form S-4 (File
                  No. 333-81139), Exhibit 4.1).

         *Incorporated by reference

         (b)      The registrant filed no reports on Form 8-K during the period
                  covered by this quarterly report on Form 10-Q.




                                       11
<PAGE>   13

                                   SIGNATURES

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                        AMERICAN PLUMBING AND MECHANICAL, INC.

         Date:  May 15, 2001                 By: /s/ David C. Baggett
                                                 -------------------------------

                                             David C. Baggett
                                             Senior Vice President
                                             and Chief Financial Officer


                                       12