Exhibit 15 The Board of Directors Duke-Weeks Realty Limited Partnership Gentlemen: RE: Registration Statements Nos. 333-49911, 333-04695 and 333-26845 With respect to the subject registration statements, we acknowledge our awareness of the use therein of our report dated April 26, 2000 related to our review of interim financial information. Pursuant to Rule 436(c) under the Securities Act of 1933, such report is not considered a part of a registration statement prepared or certified by an accountant, or a report prepared or certified by an accountant within the meaning of sections 7 and 11 of the Act. KPMG LLP Indianapolis, Indiana May 11, 2000