Building Setbacks & Zoning in Prince William County, VA (2026)
3 rules for unincorporated Prince William County, Virginia.
Verified from official government sources
Setback Rules
Setbacks vary by zoning district. In the A-1 Agricultural district, all buildings must sit at least 35 feet from the front lot line and streets, with a minimum 25-foot rear setback and a 15-foot side setback (reducible to 10 feet in some cases).
Building setback rules in Prince William County
Some RestrictionsPWC Zoning Ordinance § 32-301.06 (A-1 district)
All buildings, including accessory structures, shall be set back at least 35 feet from the front lot line, all streets, and all private access easements or rights-of-way. ... The minimum rear setback shall be 25 feet. ... The minimum side setback shall be 15 feet, except the side setback may be reduced to ten feet when properties of similar acreage within the vicinity have a ten-foot sideyard s...
Structure Height Limits
Prince William County caps residential and agricultural structures at 35 feet, rising to 60 feet for barns, silos, religious institutions, libraries, hospitals and other public-use buildings if setbacks grow a foot for every foot over 35. Zoning Ordinance § 32-300.05 exempts chimneys, flagpoles and antennas from the cap entirely.
Residential Structure Height Limits in Prince William County
Some RestrictionsPWC Zoning Ordinance § 32-300.05
1.Except as otherwise provided for in this section or elsewhere in this chapter; the maximum height for all structures in all agricultural and residential districts shall be 35 feet.2.The maximum building height for a religious institution, barn, silo or other agricultural building, library, hospital, or building owned by a public use shall be 60 feet, provided that all required yards and setba...
Lot Coverage Limits
On lots of three acres or less, Prince William County caps every accessory building, from sheds to detached garages, at 25 percent coverage of the yard it sits in under Zoning Ordinance Sec. 32-300.03. Combined accessory floor area is also capped at 30 percent of the house's floor area, though every lot gets a 576-square-foot floor allowance regardless.
Lot Coverage Limits in Prince William County
Some RestrictionsPWC Zoning Ordinance § 32-300.03
In the A-1, SR-5, SR-3, SR-1, R-2, R-4, RPC, PMD and PMR (other than areas of single-family attached dwellings) zoning districts, accessory structures, antennas and their supporting structures, and in-ground swimming pools on lots greater than three acres shall be subject to the required yards, setbacks and lot coverage of the zoning district in which they are located, except as provided for in...
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