The purposes of the D-4-R zone are to promote the development of high-density residential and mixed-use neighborhoods on Massachusetts Avenue between Thomas Circle and New Jersey Avenue, N.W.; the Mount Vernon Triangle neighborhood located between New York, New Jersey, and Massachusetts Avenues, N.W.; and the blocks between Massachusetts Avenue, N.W. and Judiciary Square.
D.C. Mun. Regs. tit. 11, r. 11-I530