SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE TO/A
                                 (RULE 14D-100)

            TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
                                (Amendment No. 4)

               INCOME OPPORTUNITY REALTY INVESTORS, INC. (Issuer)
                            (Name of Subject Company)

              INCOME OPPORTUNITY ACQUISITION CORPORATION (Offeror)
                             (Name of Filing Person)

                    AMERICAN REALTY INVESTORS, INC. (Offeror)
                             (Name of Filing Person)

                      COMMON STOCK, PAR VALUE .01 PER SHARE
                         (Title of Class of Securities)

                                   452926-10-8

                      (CUSIP Number of Class of Securities)

                                ROBERT A. WALDMAN
                        1800 VALLEY VIEW LANE, SUITE 300
                               DALLAS, TEXAS 75234
                                 (469) 522-4200
                              (469) 522-4360 (FAX)

                                   ----------

                                 With copies to:

                                   ----------


         STEVEN C. METZGER, ESQ.               JEFFREY M. SONE, ESQ.
     PRAGER METZGER & KROEMER, PLLC            JACKSON WALKER L.L.P.
      2626 COLE AVENUE, SUITE 900           901 MAIN STREET, SUITE 6000
          DALLAS, TEXAS 75204                   DALLAS, TEXAS 75202
            (214) 969-7600                        (214) 953-6000
         (214) 523-3838 (FAX)                  (214) 953-5822 (FAX)


      (Name, Address, and Telephone Numbers of Person Authorized to Receive
      Notices and Communications on Behalf of the Persons Filing Statement)




                            Calculation of Filing Fee
                            -------------------------


     Transaction valuation*                          Amount of filing fee
     ----------------------                          --------------------
                                                    
        $19,551,190.00                                    $1,799.00**


*   For purposes of calculating the fee only. This amount assumes the
    purchase of 1,029,010 shares of Transcontinental Realty Investors, Inc. for
    $19.00 per share. The amount of the filing fee, calculated in accordance
    with Section 14(g)(1)(B)(3) and Rule 0-11.

**  Filing fee was paid with the Schedule TO filed November 15, 2002.

[ ] Check the box if any part of the fee is offset as provided by Rule
    0-11(a)(2) and identify the filing with which the offsetting fee was
    previously paid. Identify the previous filing by registration statement
    number, or the Form or Schedule and the date of its filing.

Amount Previously Paid:                      Filing Party:
Form or Registration No.:                    Date Filed:

[ ] Check the box if the filing relates solely to preliminary communications
    made before the commencement of a tender offer.

    Check the appropriate boxes below to designate any transactions to which the
statement relates

    [X] third-party tender offer subject to Rule 14d-1.

    [ ] issuer tender offer subject to Rule 13e-4.

    [X] going private transaction subject to Rule 13e-3

    [ ] amendment to Schedule 13D under Rule 13d-2.

    Check the following box if the filing is a final amendment reporting
the results of the tender offer: [ ]




                        RULE 14D-1 TENDER OFFER STATEMENT

         Introduction

         This Amendment No. 4 amends and supplements the Tender Offer Statement
on Schedule TO originally filed on November 15, 2002, as amended (the "Schedule
TO") by American Realty Investors, Inc. ("ARL") and Income Opportunity
Acquisition Corporation, a wholly-owned subsidiary of ARL ("IOT Acquisition
Sub"). This Schedule TO includes the Schedule 13E-3 Transaction Statement of ARL
and IOT Acquisition Sub.

         This Tender Offer Statement relates to the offer by IOT Acquisition Sub
to purchase any and all of the issued and outstanding shares of common stock of
Income Opportunity Realty Investors, Inc. ("IOT") for $19.00 net per share in
cash upon the terms and subject to the conditions set forth in the Offer to
Purchase, dated November 15, 2002 and filed as Exhibit (a)(1) to the Schedule
TO. The information set forth in the Offer to Purchase and the Letter of
Transmittal (filed as Exhibit (a)(2) to the Schedule TO), including all
schedules, exhibits and annexes thereto, is hereby expressly incorporated herein
by reference in response to all items of information required to be included in,
or covered by, this Tender Offer Statement on Schedule TO and all items of
information required to be included in, or covered by, the Schedule 13E-3
Transaction Statement. The responses to each item in this Tender Offer Statement
are qualified in their entirety by the information contained in the Offer to
Purchase and the exhibits, as amended, hereto.

ITEM 1.  SUMMARY TERM SHEET.

         Item 1 of the Schedule TO is hereby amended as follows:

         IOT Acquisition Sub is extending the expiration date of its offer to
         purchase any and all of the issued and outstanding shares of common
         stock of IOT. The expiration date for the tender offer was 12:00
         Midnight New York City time on December 20, 2002. As extended, the
         tender offer will now expire at 12:00 Midnight New York City time, on
         January 14, 2003. IOT stockholders have until the newly-extended
         expiration date to decide whether to tender their IOT shares in the
         offer. As of 3:00 P.M. New York City time on Friday, December 20, 2002,
         approximately 274,346 shares of IOT common stock, or approximately
         18.7% of the outstanding shares, had been tendered and not withdrawn
         pursuant to the tender offer.

ITEM 4.  TERMS OF THE TRANSACTION.

         Item 4 of the Schedule TO is hereby amended as follows:

         See Item 1 of this Tender Offer Statement.

ITEM 12. EXHIBITS

         Item 12 of the Schedule TO is hereby amended as follows:

Exhibit Number       Description
--------------       -----------
    (a)(1)           Offer to Purchase, dated November 15, 2002 (1)

    (a)(2)           Letter of Transmittal, dated November 15, 2002 (1)

    (a)(3)           Notice of Guaranteed Delivery (1)




      (a)(4)   Letter to Brokers, Dealers, Commercial Banks, Trust Companies and
               other Nominees, dated November 15, 2002(1)

      (a)(5)   Form of Letter to Clients for Use by Brokers, Dealers, Commercial
               Banks, Trust Companies and other Nominees(1)

      (a)(6)   Guidelines for Certification of Taxpayer Identification Number on
               Substitute Form W-9 (1)

      (a)(7)   Summary Advertisement, dated November 15, 2002(1)

      (a)(8)   Press Release issued by American Realty Advisors on November 8,
               2002(2)

      (a)(9)   Press Release issued by American Realty Investors, Inc. on
               November 21, 2002(3)

      (a)(10)  Press Release issued by American Realty Investors, Inc. on
               December 13, 2002(8)

      (a)(11)  Press Release issued by American Realty Investors, Inc. on
               December 20, 2002.(4)

      (b)      Not applicable

      (c)      Not Applicable

      (d)      Not Applicable

      (f)      Not Applicable

      (g)      Not Applicable

      (h)      Not Applicable

      99.1     ARL/IORI/TCI Merger: Board Presentation -- Executive Summary,
               January 31, 2002, prepared by Houlihan Lokey Howard & Zukin(5)

      99.2     ARL/IORI/TCI Merger: Exhibits to Board Presentation, January
               2002, prepared by Houlihan Lokey Howard & Zukin(5)

      99.3     Discounted Cash Flow Analysis - Detail prepared by Houlihan
               Lokey Howard & Zukin(5)

      99.4     Opinion of Houlihan Lokey Howard & Zukin (TCI)(6)

      99.5     Opinion of Houlihan Lokey Howard & Zukin (Income Opportunity
               Realty Investors, Inc.)(7)



----------

(1)      Previously filed as an exhibit to the Schedule TO on November 15, 2002
         by the filing persons named in this Schedule TO and is incorporated
         herein by reference.

(2)      Previously filed as an exhibit to the Schedule TO-C on November 8, 2002
         by the filing persons named in this Schedule TO and is incorporated
         herein by reference.

(3)      Previously filed as an exhibit to the Schedule TO Amendment No. 1 on
         November 22, 2002 by the filing persons named in this Schedule TO and
         is incorporated herein by reference.

(4)      Filed herewith.

(5)      Previously filed as an exhibit to the Schedule 13E-3 Amendment No. 1
         filed by American Realty Investors, Inc. on August 30, 2002 and is
         incorporated herein by reference.

(6)      Previously filed on August 30, 2002 as Appendix E to the Proxy
         Statement/Prospectus contained in the Form S-4 filed by American Realty
         Investors, Inc. and is incorporated herein by reference.

(7)      Previously filed on August 30, 2002 as Appendix F to the Proxy
         Statement/Prospectus contained in the Form S-4 filed by American Realty
         Investors, Inc. and is incorporated herein by reference.

(8)      Previously filed as an exhibit to the Schedule TO Amendment No. 3 on
         December 16, 2002 and is incorporated herein by reference.



ITEM 13. INFORMATION REQUIRED BY SCHEDULE 13E-3.

         Item 1. Summary Term Sheet is hereby amended as follows:

                 See Item 1 of this Tender Offer Statement.

         Items 4. Terms of the Transaction is hereby amended as follows:

                 See Item 1 of this Tender Offer Statement.





                                    SIGNATURE

         After due inquiry and to the best of my knowledge and belief, I certify
that the information is set forth in this statement is true, complete and
correct.

                                      AMERICAN REALTY INVESTORS, INC.


Date:  December 20, 2002              By:  /s/ RONALD E. KIMBROUGH
       -----------------                  -------------------------------------
                                      Printed Name: Ronald E. Kimbrough
                                      Title: Executive Vice President and Chief
                                             Financial Officer



                                      INCOME OPPORTUNITY REALTY
                                      ACQUISITION CORPORATION

Date:  December 20, 2002              By:  /s/ RONALD E. KIMBROUGH
       -----------------                  --------------------------------------
                                      Printed Name: Ronald E. Kimbrough
                                      Title: Director and President