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D.C. Municipal Regulations (Last Updated: September 13, 2017) |
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Title 11. ZONING REGULATIONS OF 2016 |
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SubTilte 11-B. DEFINITIONS, RULES OF MEASUREMENT, AND USE CATEGORIES |
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Chapter 11-B3. GENERAL RULES OF MEASUREMENT |
Section 11-B308. RULES OF MEASUREMENT FOR BUILDING HEIGHT: R, RF, RA, RC-1, CG-1, AND D-1 ZONES
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308.1The height of buildings, not including a penthouse, in R, RF, RA, RC-1, CG-1, and D-1 zones shall be measured in accordance with the rules provided in this section. If more than one (1) of these subsections applies to a building, the rule permitting the greater height shall apply.
308.2The building height measuring point (BHMP) shall be established at the existing grade at the mid-point of the building façade of the principal building that is closest to a street lot line.
308.3The height of a building with a flat roof shall be measured from the BHMP to the highest point of the roof excluding parapets and balustrades not exceeding four feet (4 ft.) in height.
308.4The height of a building with a roof that is not a flat roof shall be measured as follows:
(a)From the BHMP to the average level between the highest eave, not including the eave of a dormer and the highest point of the roof; and
(b)Where there are no eaves, the average level shall be measured between the top of the highest wall plate and the highest point of the roof.
308.5The height of a building permitted to be ninety feet (90 ft.) shall be measured from the BHMP to the highest point of the roof excluding parapets and balustrades not exceeding four feet (4 ft.) in height.
308.6Where a building is removed from all lot lines by a distance equal to its proposed height above grade, the height of building shall be measured from the BHMP to the highest point of the roof or parapet.
308.7If a building fronts on more than one (1) street, any front may be used to determine street frontage; but the basis for measuring the height of the building shall be established by the street selected as the front of the building.
308.8A conforming structure in existence on June 14, 2013, that would have been rendered nonconforming as a result of the adoption of amendments to this section made in Z.C. Order No. 12-11, shall be deemed conforming; provided that the height of the structure may neither be increased or extended.