Before You Build in Vienna, VA: Permit & Rule Checklist (2026)

Residential pool fences in Vienna must comply with the Virginia Uniform Statewide Building Code (USBC) and Town Code. Minimum 48-inch barrier height, self-closing and self-latching gates, and no climbable horizontal members on the outside face. Requirements apply to pools over 24 inches deep.

Virginia has no Good Neighbor Fence Act requiring shared fence cost allocation between neighbors. Vienna follows state common law, under which each property owner is responsible for their own fence. Cost-sharing is purely voluntary and best documented in writing.

The Town of Vienna regulates fence heights under Chapter 18 (Zoning) of the Town Code, with provisions addressed in Section 18-410. Fences in front yards are limited to 4 feet, while side and rear yard fences may reach up to 6 feet. Corner lots have additional restrictions in the area between the neighboring front building line and the right-of-way. Barbed wire, razor wire, and concertina wire are prohibited on residential properties.

Vienna swimming pools follow the Virginia Uniform Statewide Building Code (13VAC5-63), which adopts the International Swimming Pool and Spa Code §305 and IRC Appendix AG105 for residential pool barriers.

Detached garages in Vienna require a building permit regardless of size and must meet zoning setbacks, height, and lot coverage limits. Most single-family districts allow detached garages in rear or side yards with 5 to 10 foot setbacks and a maximum height of 15 to 18 feet. Converting a garage into habitable space requires additional permits and replacement off-street parking.

Vienna amended Town Code Chapter 18 in November 2024 to permit Accessory Living Units (ALUs) attached to single-unit detached homes in RS-16, RS-12.5, and RS-10 zoning districts, effective December 30, 2024.

Greenhouses and garden structures in Vienna are treated as accessory structures. Small non-commercial greenhouses under 256 square feet are exempt from building permits under the Virginia USBC but must meet zoning setbacks, height, and lot coverage limits. Heated or permanently foundationed greenhouses larger than 256 square feet require full building permits.

Vienna prohibits open burning of leaves, brush, and yard waste within town limits. The Town of Vienna follows the Statewide Fire Prevention Code and Fairfax County open burning restrictions, which forbid most residential open burning in densely populated areas. The Virginia 4 PM Burning Law applies countywide during spring fire season (February 15 through April 30).

Portable fire pits and chimineas are permitted in Vienna under state fire code. Recreational fire rules apply: ≤3 ft fuel diameter, ≥25 ft from structures, dry wood only. Multi-family balcony restrictions apply per Statewide Fire Prevention Code §307.4.4.

Vienna purchases water from Fairfax Water, which follows the Northern Virginia Regional Drought Response Plan. Outdoor watering restrictions activate during declared drought stages: voluntary conservation in Stage 1, mandatory odd/even or day-of-week watering in Stage 2, and complete outdoor water bans in Stage 3. The Virginia DEQ and Governor can declare broader emergencies.

Vienna is a designated Tree City USA with strong tree canopy preservation goals and regulates tree removal through its zoning ordinance and development review process. Removing trees during land disturbance, redevelopment, or teardowns triggers tree preservation and replacement requirements. Individual homeowner removal of a single yard tree on an existing improved lot is generally permitted without a town permit but is subject to HOA rules and state-road right-of-way rules.