AMB PROPERTY L.P. MEDIUM-TERM NOTE, SERIES B

Exhibit 10.1

(FACE OF NOTE)

AMB PROPERTY L.P.
MEDIUM-TERM NOTE, SERIES B

UNLESS THIS SECURITY IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), TO THE OPERATING PARTNERSHIP (AS DEFINED BELOW) OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY SECURITY ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

Agent’s Discount or Commission: 0.593                      %

Net Proceeds To Issuer: $173,962,250.00

Interest Rate: 5.450                      % per annum

Other/Additional Provisions: Optional Prepayment by Operating Partnership

The notes will be subject to prepayment at the option of the Operating Partnership, at any time in whole or from time to time in part, upon not less than 30 and not more than 60 days’ notice mailed to each holder of notes to be prepaid at the holder’s address appearing in the note register, at a price equal to the greater of:

• 100% of the principal amount of the notes to be prepaid; and
• the sum of the present values of the remaining scheduled payments of principal and interest (at the rate in effect on the date of calculation of the prepayment price) on the notes to be prepaid (exclusive of interest accrued to the date of prepayment) discounted to the date of prepayment on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at the applicable Treasury Yield plus 15 basis points;

in each case, plus accrued and unpaid interest to the date of prepayment.

Notes called for prepayment will become due on the date fixed for prepayment. Notices of prepayment will be mailed by first-class mail at least 30 but not more than 60 days before the date fixed for prepayment to each noteholder at its registered address. The notice will state the principal amount to be prepaid. On and after the date fixed for prepayment, interest will cease to accrue on any prepaid notes. If less than all the notes are prepaid at any time, the trustee will select the notes to be prepaid on a pro rata basis or by any other method the trustee deems fair and appropriate.

“Comparable Treasury Issue” means the United States Treasury security selected by an Independent Investment Banker as having a maturity comparable to the remaining term of the notes that would be utilized, at the time of selection and in accordance with customary financial practice in pricing new issues of corporate debt securities of comparable maturity to the remaining terms of the notes.

“Comparable Treasury Price” means, with respect to any date fixed for the prepayment of notes, (a) the bid price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) at 4:00 P.M. on the third business day preceding such date, as set forth on “Telerate Page 500” (or such other page as may replace Telerate Page 500) or (b) if such page (or any successor page) is not displayed or does not contain such bid prices at such time, (i) the average of the Reference Treasury Dealer Quotations obtained by the trustee for such date, after excluding the highest and lowest of four such Reference Treasury Dealer Quotations, or (ii) if the trustee is unable to obtain at least four such Reference Treasury Dealer Quotations, the average of all Reference Treasury Dealer Quotations obtained by the trustee.

“Independent Investment Banker” means either of Morgan Stanley & Co. Incorporated or Banc of America Securities LLC, or, if each such firm is unwilling or unable to select the applicable Comparable Treasury Issue, a leading independent investment banking institution appointed by the trustee and reasonably acceptable to the Operating Partnership.

“Reference Treasury Dealer” means Morgan Stanley & Co. Incorporated, Banc of America Securities LLC, and two other primary U.S. government securities dealers in New York City selected by the Independent Investment Banker (each, a “Primary Treasury Dealer ”); provided, however, that if any of the foregoing shall cease to be a Primary Treasury Dealer, the Operating Partnership will substitute another Primary Treasury Dealer.

“Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any date fixed for the prepayment of notes, an average, as determined by the trustee, of the bid and asked prices for the Comparable Treasury Issue for the notes (expressed in each case as a percentage of its principal amount) quoted in writing to the trustee by such Reference Treasury Dealer at 5:00 p.m., New York City time, on the third business day preceding such date.

“Treasury Yield” means, with respect to any date fixed for the prepayment of notes, the rate per annum equal to the semiannual equivalent yield to maturity (computed as of the third business day immediately preceding such date) of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the applicable Comparable Treasury Price for such date.

      AMB Property, L.P. , a Delaware limited partnership (hereinafter called the “Operating Partnership”, which term includes any successor under the Indenture referred to below), for value received, hereby promises to pay to the Registered Holder specified on the face hereof, or registered assigns (“Holder”), upon presentation and surrender of this Note, on the Maturity Date specified on the face hereof (except to the extent repaid or redeemed prior to the Maturity Date) the Principal Amount specified on the face hereof in the Specified Currency specified on the face hereof, and to pay interest thereon at the Interest Rate per annum specified on the face hereof, until the principal hereof is paid or duly made available for payment.

     Unless otherwise specified on the face hereof, the Operating Partnership will pay interest (other than defaulted interest) on each Interest Payment Date (as defined below), commencing with the first Interest Payment Date next succeeding the Original Issue Date specified on the face hereof, to the person who is the Holder of this Note on the applicable Regular Record Date (as defined below); provided that if the Original Issue Date occurs between a Regular Record Date and an Interest Payment Date, the Operating Partnership will make the first payment of interest on the Interest Payment Date following the next Regular Record Date to the registered owner on that Regular Record Date.

     The Operating Partnership will pay interest due on the Maturity Date, Redemption Date (as defined on the reverse hereof) or Repayment Date (as defined on the reverse hereof), as applicable, to the same person to whom it is paying the principal amount; provided that if the Operating Partnership would have made a regular interest payment on the Maturity Date, Redemption Date or Repayment Date, as the case may be, it will make that regular interest payment to the Holder as of the applicable Regular Record Date, even if it is not the same person to whom it is paying the principal amount.

     Any such interest not so punctually paid or duly provided for (“Defaulted Interest”) will forthwith cease to be payable to the Holder on any Regular Record Date, and shall be paid, at the election of the Operating Partnership, to either (i) to the Holder at the close of business on a special record date (the “Special Record Date”) for the payment of such Defaulted Interest to be fixed by the Trustee (as defined on the reverse hereof), notice whereof shall be given to the Holder of this Note by the Trustee not less than 10 calendar days prior to such Special Record Date or (ii) at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which this Note may be listed, and upon such notice as may be required by such exchange, all as more fully provided for in the Indenture.

     Unless specified on the face hereof, payments of interest on this Note with respect to any Interest Payment Date, Maturity Date, Redemption Date or Repayment Date, as applicable, will include interest accrued from and including each immediately preceding Interest Payment Date (or from and including the Original Date of Issue if no interest has been paid or duly provided for), to, but excluding, the Interest Payment Date, Maturity Date, Redemption Date or Repayment Date, as the case may be.

     If an Interest Payment Date, Maturity Date, Redemption Date or Repayment Date, as applicable, falls on a day that is not a Business Day (as defined below), interest (or interest and principal) will be paid on the next Business Day; provided that interest on the payment will not accrue for the period from the original Interest Payment Date, Maturity Date, Redemption Date or Repayment Date, as the case may be, to the date of such payment on the next Business Day.

     Unless otherwise specified on the face hereof, the “Interest Payment Dates” shall be June 30 and December 30 of each year. The “Regular Record Dates” shall be June 15 for a June 30 interest payment date, December 15 for a December 30 interest payment date and the date that is 15 calendar days before any other interest payment date, whether or not those dates are Business Days.

     “Business Day” as used herein means any day, other than a Saturday or Sunday, (a) that is neither a legal holiday nor a day on which banking institutions are authorized or required by law or regulation to close (x) in The City of New York or (y) for notes denominated in a specified currency other than U.S. dollars, Australian dollars or euro, in the principal financial center of the country of the specified currency or (z) for notes denominated in Australian dollars, in Sydney, and (b) for notes denominated in euro, that is also a day on which the Trans-European

Automated Real-time Gross Settlement Express Transfer System, which is commonly referred to as “TARGET,” is operating.

     Payment of principal (and premium, if any) and interest on, this Note on any day, if the Holder of this Note is DTC (or its nominee or other depository, a “Depository”), will be made in accordance with any applicable provisions of such written agreement between the Operating Partnership, the Trustee and the Depository (or its nominee) as may be in effect from time to time. Otherwise payment of principal (and premium, if any) and interest on, this Note on any day shall be payable and this Note may be surrendered for the registration of transfer or exchange at the Office of the Trustee at 100 Wall Street, Suite 1600, New York, New York 10005, unless the Holder of this Note is notified otherwise; provided, however, that at the option of the Operating Partnership, interest may be paid by check mailed to the address of the Person entitled thereto as such address shall appear in the Operating Partnership’s Security Register or by wire transfer, if proper wire instructions are on file with the Trustee or are received at presentment, to an account maintained by the payee located in the United States. Unless the Holder of this Note is notified otherwise, the place where notices or demands to or upon the Operating Partnership in respect of this Note and the Indenture may be served shall be the Corporate Trust Office of the Trustee at 100 Wall Street, Suite 1600, New York, New York 10005.

     To receive payment of a U.S. dollar denominated Note upon redemption (if applicable) or at maturity, a Holder must make presentation and surrender of such Note on or before the Redemption Date or Maturity Date, as applicable. To receive payment of a Note denominated in a Foreign Currency (as defined on the reverse hereof) or composite currency upon redemption or at maturity, a Holder must make presentation and surrender of such Note not less than two Business Days prior to the Redemption Date or Maturity Date, as applicable. Upon presentation and surrender of a Note denominated in a Foreign Currency or composite currency at any time after the date two Business Days prior to the Redemption Date or Maturity Date, as applicable, the Operating Partnership will pay the principal amount (and premium, if any) of such Note, and any interest due upon redemption or at maturity (unless the Redemption Date or Maturity Date is an Interest Payment Date), two Business Days after such presentation and surrender.

     For procedures relating to the receipt of payment upon repayment, if applicable, see the reverse hereof.

     The Operating Partnership will pay any administrative costs imposed by banks in connection with sending payments by wire transfer, but any tax, assessment or governmental charge imposed upon payments will be borne by the Holders of the Notes in respect of which payments are made.

     Reference is hereby made to the further provisions of this Note set forth on the reverse hereof and, if so specified on the face hereof, in the Addendum hereto, which further provisions shall for all purposes have the same force and effect as though fully set forth on the face hereof.

     This Note shall not be entitled to any benefit under the Indenture referred to on the reverse hereof, or become valid or obligatory for any purpose, until the certificate of authentication hereon shall have been signed by or on behalf of the Trustee under such Indenture.

     Notwithstanding the foregoing, if an Addendum is attached hereto or “Other/Additional Provisions” apply to this Note as specified on the face hereof, this Note shall be subject to the terms set forth in such Addendum or such “Other/Additional Provisions.”

     IN WITNESS WHEREOF, the Operating Partnership has caused this Instrument to be duly executed under.

TRUSTEE’S CERTIFICATE OF AUTHENTICATION
This is one of the Securities of the series designated
and referred to in the within-mentioned Indenture.

U.S. BANK, N.A. , as Trustee

(REVERSE OF NOTE)

AMB PROPERTY L.P.
MEDIUM-TERM NOTE, SERIES B
(FIXED RATE)

     This Note is one of a duly authorized issue of debt securities of the Operating Partnership (hereinafter called the “Securities”) of the series hereinafter specified, unlimited in aggregate principal amount, all issued or to be issued under or pursuant to an Indenture dated as of June 30, 1998, as supplemented by the First Supplemental Indenture dated as of June 30, 1998, the Second Supplemental Indenture dated as of June 30, 1998, the Third Supplemental Indenture dated as of June 30, 1998, the Fourth Supplemental Indenture dated as of August 15, 2000 and the Fifth Supplemental Indenture dated as of May 7, 2002, among the Operating Partnership, AMB Property Corporation, a Maryland corporation and general partner of the Operating Partnership (the “Guarantor”), and U.S. Bank, N.A., as successor to State Street Bank and Trust Company of California, N.A., as Trustee; to which Indenture and all indentures supplemental thereto (herein collectively called the “Indenture”) reference is hereby made for a specification of the rights and limitation of rights thereunder of the Holders of the Securities, the rights and obligations thereunder of the Operating Partnership and the rights, duties and immunities thereunder of the Trustee. The Securities may be issued in one or more series, which different series may be issued in various aggregate principal amounts, may mature at different times, may bear interest (if any) at different rates, may be subject to different redemption or repayment provisions (if any), may be subject to different covenants and defaults and may otherwise vary as provided in the Indenture. This Note is one of a series designated as “Series B Medium-Term Notes” (hereinafter referred to as the “Notes”) of the Operating Partnership, of up to $400,000,000 in aggregate principal amount. All terms used in this Note which are defined in the Indenture and which are not otherwise defined in this Note shall have the meanings assigned to them in the Indenture. The terms of the Notes include those stated in the Indenture and those made a part of the Indenture by reference to the Trust Indenture Act of 1939, as amended. The Notes are subject to all such terms, and the Holders are referred to the Indenture and such Act for a statement of such terms. To the extent any provision of this Note conflicts with the provisions of the Indenture, the provisions of the Indenture shall govern and be controlling.

     Unless stated to the contrary on the face hereof, this Note is issuable only in registered form without coupons in Book-Entry form represented by one or more global notes (each a “Global Note”) recorded in the book-entry system maintained by the Depository. If specified on the face hereof, this Note is issuable in certificated form issued to, and registered in the name of, the beneficial owner or its nominee (a “Certificated Note”).

     Unless a different minimum Authorized Denomination is set forth on the face hereof, this Note is issuable in minimum denominations of (i) if the Specified Currency of this Note is U.S. dollars, U.S. $1,000 and in any larger amount in integral multiples of $1,000 and (ii) if the Specified Currency of this Note is a currency other than U.S. dollars (a “Foreign Curr