EXHIBIT 10(ff) -------------- AMENDMENT OF LEASE ------------------ This AMENDMENT OF LEASE (this "Amendment") made as of August 1, 1997 between EQUITABLE FEDERAL STREET REALTY COMPANY LIMITED PARTNERSHIP, a Massachusetts limited partnership having an address at One Boston Place, Suite 2020, Boston, Massachusetts 02108 ("Landlord"), and BANKBOSTON, N.A. (formerly named The First National Bank of Boston), a national banking association duly organized and existing under the laws of the United States of America having its principal place of business at 100 Federal Street, Boston, Massachusetts 02110 ("Tenant"). BACKGROUND ---------- Landlord and Tenant are Landlord and Tenant, respectively, under an Indenture of Lease having an effective date as of September 1, 1991 covering certain premises at 100 Federal Street, Boston, Massachusetts, as amended to date (as so amended, the "Lease"). The parties desire to amend the Lease in certain respects as hereinafter set forth. Capitalized terms not defined herein shall have the same meaning ascribed to them in the Lease. WITNESSETH: ---------- NOW, THEREFORE, Landlord and Tenant hereby agree to amend the Lease as follows: 1. Effective as of August 1, 1997, there shall be added to the Premises under the Lease the portion of space located on Floor 5M of the Building shown as Areas E, K, L and G on the plan attached hereto as Exhibit A (the "5M --------- Storage Space"). The 5M Storage Space consists of approximately 8,456 rentable square feet of space. 2. Except as expressly provided herein, all terms and provisions of the Lease applicable to the existing space located on Floor 5M of the Building leased by Tenant under the Lease (the "Existing 5M Premises") shall be applicable to the 5M Storage Space, except that the 5M Storage Space shall be leased to Tenant "as is", it being understood that Landlord shall have no obligation to bring the 5M Storage Space into the condition required by Schedule COND or into compliance with the Americans With Disabilities Act or to provide any allowance for the 5M Storage Space. 3. Without limiting the generality of Section 2 of this Amendment of Lease, commencing on August 1, 1997: (a) the 5M Storage Space shall be part of Space B under the Lease; (b) Tenant shall pay Base Rent for the 5M Storage Space at the same times that such payments are due for the Existing 5M Premises and at the following per rentable square foot rates for the applicable periods: (i) August 1, 1997 through and including August 31, 1998: $10.00 per rentable square foot, (ii) September 1, 1998 through and including August 31, 2001: $12.00 per rentable square foot, (iii) September 1, 2001 through and including August 31, 2006: $16.00 per rentable square foot, and (iv) September 1, 2006 through and including August 31, 2009: $18.00 per rentable square foot; (c) Tenant shall make payments on account of Impositions and Operating Expenses for the 5M Storage Space in the manner provided in Section 2 of Article III of the Lease. 4. Except as only expressly amended hereby, the Lease shall continue in full force and effect as heretofore. WITNESS the execution hereof as an instrument under seal as of the date first above-written. LANDLORD: EQUITABLE FEDERAL STREET REALTY COMPANY LIMITED PARTNERSHIP, a Massachusetts limited partnership By: 100 Federal Street Realty Corporation, its general partner By: JOHN SCHOSER ------------------------------- Its: Investment Officer TENANT: BANKBOSTON, N.A. By: DONALD C. WEBSTER ------------------- Its: Director of Corporate Facilities Manager -3- Exhibit A --------- [Plan Showing Storage Space]