Fairfax, VA Building Setbacks & Zoning: Setback Rules (2026)

Front setback requirements are set in the City of Fairfax Zoning Ordinance under the dimensional standards for each zoning district. In R-1 (low-density residential), front setbacks are typically 40 feet. R-2 single-family detached districts require approximately 30 feet, R-3 townhouse districts approximately 25 feet, and higher-density districts progressively smaller. On corner lots both street frontages are treated as front yards with the setback applied to each. Some districts use an averaging rule where if existing homes on the block have lesser setbacks, the new construction setback may be averaged to match the neighborhood character. Permitted encroachments into the front setback typically include: eaves up to 2 feet, bay windows, chimneys, open porches up to 6 to 10 feet, ADA ramps, and driveways. Fences in front yards are limited in height, usually 3.5 to 4 feet. Accessory structures such as sheds and detached garages are generally prohibited in the front yard. Variances to front setback requirements may be sought from the Board of Zoning Appeals (BZA) under Virginia Code §15.2-2309, requiring proof of hardship unique to the property not created by the owner. Front setback violations are zoning enforcement matters with civil penalties and potential required removal.