DC's zoning code (11 DCMR) establishes minimum setback requirements that vary by zone district. Residential zones typically require front yards of 12-20 feet, side yards of 5-8 feet, and rear yards of 20-25 feet. The Board of Zoning Adjustment may grant variances.
Under 11 DCMR (Zoning Regulations of 2016), setback requirements vary by zone district. In low-density residential zones (R-1, R-2), front setbacks are typically 20 feet, side yards 8 feet, and rear yards 25 feet. Medium-density zones (R-3, RF) have reduced setbacks, with front yards around 12-15 feet and narrower side yards. Row house (RF) zones often require only rear yards of 20 feet since row houses share party walls. Mixed-use and commercial zones have different standards. Additions to existing buildings must conform to current setback requirements or match the existing building line. The Board of Zoning Adjustment (BZA) can grant variances for hardship cases. Historic districts may have additional setback considerations through the Historic Preservation Review Board.
Building in violation of setback requirements can result in stop-work orders, denial of certificate of occupancy, required demolition of non-conforming portions, and fines from DOB.
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See how Washington's setback rules rules stack up against other locations.
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