Backyard project permits in Arlington County, VA
Arlington lets small backyard buildings sit just 1 ft from the side and rear lines, but its lot-coverage caps catch many garages and patios.
Rules last checked by a person on October 20, 2026. Guidance only; confirm with Arlington County before you build.
| Typical project | Permit? |
|---|---|
| Shed10 by 12 ft shed, 10 ft tall, no power | No: no permit as described |
| Deck160 sq ft freestanding deck, 24 in high | Yes: Building permit |
| Fence6 ft wood fence in the back yard | Probably not: no permit as described |
| Garage24 by 20 ft detached garage with lights | Yes: Building permit, Electrical permit |
| ADU650 sq ft detached backyard cottage | Yes: Building permit, Accessory dwelling permit (Zoning Administrator) |
Check your exact lot
Permit office
Virginia USBC (2021) and the Arlington County Zoning Ordinance (effective June 13, 2026).