Amends the Internal Revenue Code to allow qualified retail improvement property a 15-year recovery period for purposes of the tax deduction for depreciation. Defines such property as any improvement to an interior portion of a building which is nonresidential real property, if: (1) such portion is open to the general public and is used in the trade or business of selling tangible personal property or services to the general public; and (2) such improvement is placed in service more than three years after the date the building was first placed in service. Excludes specified improvements, including the enlargement of a building, any elevator or escalator, or the internal structural framework of a building.