Located on 15th Street, N.W. in Washington, D.C., Grace Reformed Church comprises three buildings: the Church or Sanctuary; the Sunday School; and the Parish House. The Church, designed by Paul J. Pelz and A. A. Ritcher, was constructed between 1902–1903. The Sunday School, also designed by Pelz, was constructed from 1911–1912. The Parish House, preceding both religious structures, was erected in 1892 by W. H. H. Knight, a member of the congregation. The three structures are situated so that the Parish House and Church front 15th Street, N.W. while the Sunday School, abutting the Church to the east, faces onto an alley which was originally intended as O Street, N.W.