D.C. Mun. Regs. tit. 10, r. 10-C200
The Review Board shall maintain the D.C. Inventory of Historic Sites, and shall designate historic landmarks and historic districts for inclusion in the Inventory.
The Act protects historic landmarks and historic districts differently during the designation process. The Act protects a proposed historic landmark temporarily when an application is officially filed, and permanently upon designation, but the Act does not protect properties within a proposed historic district until after the Board designates the district and the State Historic Preservation Officer nominates or issues a written determination to nominate the district to the National Register of Historic Places.
The Review Board and SHPO shall comment on Federal agency nominations to the National Register, and on National Historic Landmark designations made by the Secretary of the Interior (see additional procedures in Chapters 13 and 14).
The following terms specifically applicable to this chapter are defined in Chapter 99:
D.C. Mun. Regs. tit. 10, r. 10-C200