QuickLinks -- Click here to rapidly navigate through this document


EXHIBIT 4.8


REGISTRATION RIGHTS AGREEMENT

    THIS REGISTRATION RIGHTS AGREEMENT is made as of November 14, 1997 by and between O'CONNOR RETAIL PARTNERS, L.P., a Delaware limited partnership ("ORP"), and together with any persons who hereafter join in and are made parties to this Agreement, the "Holders"), and SIMON DEBARTOLO GROUP, INC., a Maryland corporation ("SDG").

    WITNESSETH:

    The Holders have been issued 841,114 units of limited partnership interest ("Units") of Simon DeBartolo Group, L.P., a Delaware limited partnership (the "Operating Partnership") which are exchangeable for shares of the common stock of SDG (the "Shares") pursuant to Article XI of the Fifth Amended and Restated Partnership Agreement of the Operating Partnership dated August 9, 1996 (the "Partnership Agreement").

    In connection with the issuance of the Units to the Holders, the Operating Partnership agreed to cause SDG to enter into this Agreement.

    NOW, THEREFORE, in consideration of the premises and of Ten Dollars ($10) and other good and valuable consideration by each party hereto to the other paid, the receipt and sufficiency of which are hereby acknowledged, the parties hereto hereby agree as follows:

    1.  At any time after any of the Holders (including to the extent provided in Section 8, a Permitted Transferee of any of the Holders) exercises the right to exchange for Shares all or a portion of the Units originally issued to the Holders and upon ten (10) business days written notice from such Holders requesting registration, SDG shall amend an existing registration statement or file a new registration statement (the "Registration Statement") under the Securities Act of 1933, as amended, and the regulations promulgated thereunder (the "1933 Act"), with the Securities and Exchange Commission ("SEC") covering resales of all of the Shares which may be obtained upon exchange of the Units and any other Registrable Securities (as hereinafter defined) and shall use all reasonable efforts to cause the Registration Statement to become effective under the 1933 Act as soon as practicable after filing. Once the Registration Statement becomes effective, SDG shall keep the Registration Statement continuously effective and available for resale of the Registrable Securities until the earliest to occur of (i) the sale of all of the Registrable Securities by the Holders; (ii) the date on which all of the Registrable Securities become eligible for sale pursuant to Rule 144(k) under the 1933 Act; or (iii) SDG provides Holders with an opinion of counsel to the effect that all of the outstanding Registrable Securities may be resold by the Holders without registration under the 1933 Act. SDG agrees that it shall deliver to the Holders copies of the Registration Statement as filed with the SEC and any amendments and supplements thereto (other than post-effective amendments) prior to the filing thereof. SDG shall bear all expenses relating to filing the Registration Statement and keeping the Registration Statement current, effective and available during the period specified above; provided, however, that SDG shall not be responsible for any brokerage fees or underwriting commissions, if any, incurred by Holders in connection with the resale of Registrable Securities or the fees and expenses of any counsel retained by a Holder in connection with resales of the Registrable Securities. Notwithstanding the foregoing, if the Operating Partnership irrevocably elects or is required prior to the filing of the Registration Statement to issue cash in lieu of Shares upon exchange of the Units held by Seller, SDG shall not be required to file the Registration Statement with respect to such Units not exchanged for Shares. The term "Registrable Securities" shall include (i) any Shares that have been or may be issued from time to time upon the exchange of the Units (including any additional units of limited partnership interest of the Partnership or any successor entity received in exchange for, or as a dividend or distribution on account of the Units) pursuant to Article XI of the Partnership Agreement and other securities issued by SDG in exchange for the Shares and (ii) any securities issued by the Operating Partnership or SDG as a dividend or distribution on account of Registrable Securities or


resulting from a subdivision of outstanding Registrable Securities into a greater number of securities (by reclassification, stock split or otherwise).

    2.  During the time period that the Registration Statement is required to be current, effective and available under Section 1 above, SDG shall also at its expense:

–2–


    3.  SDG hereby agrees to indemnify and hold harmless each Holder and each person or entity, if any, which controls a Holder (within the meaning of either Section 15 of the 1933 Act or Section 20 of the 1934 Act), and its and their respective officers, directors, partners, agents and employees, from and against any and all losses, claims, damages, costs and expenses (including reasonable attorneys' fees) to which such Holder or each such person may become subject under the 1933 Act or otherwise by reason of any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement or the Prospectus, or by reason of any omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances under which they were made, not misleading, and shall reimburse each Holder for any legal or other expenses reasonably incurred by such Holder in connection with investigating or defending any such loss, claim or damages as such expenses are incurred; provided, however, that SDG shall not be liable insofar as any such losses, claims, damages, costs and expenses (including reasonable attorneys fees) are caused or incurred by reason of any such untrue statement or omission or alleged

–3–


untrue statement or omission based upon information furnished in writing to SDG by such Holder expressly for use therein. In addition, upon request of a Holder, SDG shall enter into one or more indemnification agreements with any broker or brokers engaged by such Holder to sell all or any portion of the Registrable Securities, each such agreement to indemnify the broker in question against the same losses, claims, damages, costs and expenses as such Holder is indemnified against by SDG under this paragraph 3.

    4.  Each Holder hereby (i) represents and warrants that the Units and the Registrable Securities are being acquired by it for investment and not with a view to the distribution thereof (except as contemplated by and in accordance with this Agreement, the Registration Statement or otherwise in accordance with the requirements of the 1933 Act and the 1934 Act and all applicable state securities laws), (ii) agrees that, upon receipt of any notice from SDG of the happening of any event of the kind described in subsection 2.5(e), such Holders will forthwith discontinue disposition of the Registrable Securities pursuant to the Registration Statement until such Holder's receipt of the copies of the supplemented or amended Prospectus contemplated by subsection 2.8 and (iii) agrees that the certificate or certificates representing the Registrable Securities shall bear the following legend:

provided that certificates representing Registrable Securities shall not be required to bear such legend (and SDG shall cooperate with the holders thereof in obtaining replacement certificates without such legend) if (a) the resale of such Registrable Securities is not required to be registered hereunder or (b) the holder thereof delivers to SDG an opinion of counsel in form and substance reasonably satisfactory to SDG that such Registrable Securities may be resold by the holder thereof without registration under the 1933 Act in reliance upon Section 4(1) under the 1933 Act.

    5.  SDG covenants and agrees that upon the issuance of the Shares by SDG to the Holders in exchange for the Units, each Holder shall have good and absolute title to the Shares free and clear of all liens, encumbrances and security interests except for restrictions under the 1933 Act and the 1934 Act, restrictions on transfer contemplated by Section 4 above and any liens, encumbrances and security interests arising out of such Holder's own acts.

    7.  The obligations of SDG under this Agreement shall expire upon the earliest to occur of: (i) such time as the Units, or after exchange of the Units, the Registrable Securities, are no longer

–4–


outstanding, (ii) SDG has kept the Registration Statement effective for the period set forth in Section 1 above, or (iii) counsel for SDG has provided to a Holder a written opinion to the effect that the subsequent disposition by such Holder of the Registrable Securities would not require registration under the 1933 Act or any similar state law then in effect.

    8.  This Agreement shall be binding upon and inure to the benefit of the parties hereto and, subject to the following sentence, their respective successors and assigns. A transferee of Units and/or Registrable Securities who is a "Permitted Transferee" as hereinafter defined and who hereafter acquires the Units and/or Registrable Securities from a Holder in a transaction other than pursuant to a registration statement under the 1933 Act may become a Holder for purposes of this Agreement by (i) taking and holding the record ownership of such Units and/or Registrable Securities, (ii) notifying SDG in writing of such transfer and (iii) providing SDG with all information concerning such transferee that is necessary to amend or supplement the Prospectus, whereupon such transferee shall be conclusively deemed to have agreed to be bound by and entitled to the benefit of all the terms and provisions hereof. "Permitted Transferee" shall mean J.W. O'Connor & Co. Incorporated, O'Connor Associates, L.P., any of the persons set forth on Schedule I hereto and any permitted transferee under the Partnership Agreement. The provisions of the Agreement shall be construed in accordance with the laws of the State of New York applicable to agreements made and to be performed within said state.

    IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the day and year first above written.

  O'CONNOR RETAIL PARTNERS, L.P.

 

By:

 

J.W. O'CONNOR & CO. INCORPORATED,
General Partner

 

By

 

/s/ 
BRUCE MACLEOD   
      Name:   Bruce Macleod
      Title:   Executive Vice President

 

SIMON DEBARTOLO GROUP, INC.

 

By

 

/s/ 
DAVID SIMON   
      Name:   David Simon
      Title:   Chief Executive Officer

[Schedule I omitted]

–5–




QuickLinks

REGISTRATION RIGHTS AGREEMENT