 |
D.C. Municipal Regulations (Last Updated: September 13, 2017) |
 |
Title 10. PLANNING AND DEVELOPMENT |
|
SubTilte 10-C. HISTORIC PRESERVATION |
|
Chapter 10-C23. STANDARDS FOR WINDOW REPAIR AND REPLACEMENT (WINDOW STANDARDS) |
Section 10-C2309. WINDOW REPLACEMENT: CONTRIBUTING BUILDINGS IN HISTORIC DISTRICTS (LARGE BUILDINGS)
-
2309.1For the purposes of these standards, a "large building" in a historic district shall be defined as a building of five (5) or more stories in height, or a building of less than five (5) stories with a street frontage of one hundred (100) feet or more on any single frontage.
2309.2Principal Facades
(a)Replacement windows shall be approved if they match the historic windows in terms of configuration, operation, profile, dimensions, and finish. However, matching the material is encouraged and may be required if deemed appropriate by the staff.
(b)Where the historic windows possess special architectural value, including special windows, replacement windows shall match the material of the historic windows. Special architectural value often applies to large buildings with ground floor or lower floor windows that are distinctively different from the typical upper floor windows. In these cases, the staff may deem it appropriate to require matching the material on the lower windows (or to require retention of the original lower windows), while allowing replacement in a different material for the upper windows.
(c)Alteration of window openings shall generally require approval by the Board. For basement openings not visible from a street or public open space, or only marginally visible, the staff may approve alterations that do not compromise historic or architectural characteristics.
2309.3Secondary Elevations
(a)If existing windows are visible from a street or public open space, a permit shall be issued if replacement windows reasonably match the historic windows in terms of configuration, method of operation, profile, and dimensions, and provided that they do not replace special windows. Matching the material and finish is encouraged but not required.
(b)If existing windows are not visible from a street or public open space, a permit shall be issued if replacement windows reasonably match the historic windows in terms of method of operation and dimensions, and provided that they do not replace special windows. Flexibility is allowed in the choice of configuration, method of operation, profile, material, and finish.
(c)Alteration of window openings is discouraged, but some flexibility may be applied.