1 EXHIBIT 99.1 Agreement Regarding Disclosure of Long-Term Debt Instruments In reliance upon Item 601(b)(4)(iii)(A), of Regulation S-K, AIMCO Properties, L.P., a Delaware limited partnership (the "Partnership") has not filed as an exhibit to its Annual Report on Form 10-K for the fiscal year ended December 31, 1998, any instrument with respect to long-term debt not being registered where the total amount of securities authorized thereunder does not exceed 10 percent of the total assets of the Partnership and its subsidiaries on a consolidated basis. Pursuant to Item 601(b)(4)(iii)(A), of Regulation S-K, the Partnership hereby agrees to furnish a copy of any such agreements to the Securities Exchange Commission upon request. AIMCO PROPERTIES, L.P. By: AIMCO-GP, Inc. its General Partner By: /s/ PETER KOMPANIEZ -------------------------- Peter Kompaniez President