Windows are an important and integral part of the design of most buildings. They typically comprise thirty to forty percent of the surface area of the building's principal facade. In making a determination on proposed changes to windows, the Board and staff evaluate the effect of the proposal on the aesthetic values and the historical and architectural significance of the affected historic building. Factors in this evaluation include the architectural style and integrity of the historic building, and the design, material, color, and general appearance of the proposed work.
These window standards are based on the following principles:
To the maximum extent possible, these standards shall be applied so as to minimize harm to National Historic Landmarks and National Historic Landmark Districts.
The following terms specifically applicable to this chapter are defined in Chapter 99:
D.C. Mun. Regs. tit. 10, r. 10-C2300