D.C. Mun. Regs. tit. 11, r. 11-A205
The official Zoning Map of the District of Columbia shall be the zoning map that is produced and maintained by the Office of Zoning effective on the effective date of this title.
The zoning map shall be available for public access from the Office of Zoning, either on paper or electronically.
The official Zoning Map and all explanatory material on the map shall be incorporated by reference and made a part of this title.
In addition to the official Zoning Map, a printable electronic summary extract of the official Zoning Map shall be prepared quarterly, published on the Office of Zoning's website, and made available to the public for printing upon request.
The electronic summary extract of the official Zoning Map shall not supersede the official Zoning Map, but shall be prepared for the purpose of guidance only.
D.C. Mun. Regs. tit. 11, r. 11-A205