Do you need a permit for a pergola, play set, or carport in Fairfax County, VA?
It depends on the details of your project.
Up to 8.5 ft tall, a freestanding structure can go anywhere in a side or rear yard. 8.5 to 12 ft needs 5 ft from the lines.
Two trellises, up to 8 ft tall and 4 ft wide, may stand in the front setback.
Play equipment counts toward the 30% rear setback coverage cap.
A person last checked these rules on October 20, 2026. This is guidance only, so confirm with Fairfax County before you build.
Check your exact lot
Your zoning district sets the setbacks, and a flood zone can change the permit answer. Enter your address to see both.
Permits a pergola, play set, or carport can need in Fairfax County
| Permit | When it applies |
|---|---|
| Architectural Review Board approval | This structure needs a building permit, and in a Historic Overlay District the Architectural Review Board (or Heritage Resources staff, for an accessory structure not visible from a historic property or major road) must approve it before the permit issues (Zoning Ordinance § 3101.6.C). |
| Building permit | Carports, attached pergolas and detached structures over 256 sq ft need a building permit.Medium confidence |
| Electrical permit | Lights, fans or outlets need an electrical permit.Medium confidence |
| Floodplain development permit | Structures in a FEMA special flood hazard area need a floodplain permit. |
| Chesapeake Bay (RPA) review | Any development or land disturbance in a Resource Protection Area generally needs county approval first. Sheds, garages, pools, gazebos and patios there need an exception with a public hearing. Some new decks can get an administrative waiver. |
Limits that apply citywide
| Up to 8.5 ft tall | Anywhere in a side or rear yard |
|---|---|
| 8.5 to 12 ft tall | 5 ft from side and rear lot lines |
| Over 12 ft tall | District side setback, and a rear setback equal to its height |
| Front yard | Not allowed on lots of 36,000 sq ft or less, except up to two trellises 8 ft tall and 4 ft wide |
Local details
- Call 811 at least a few days before you dig footings or post holes. Utility locating is free.
- HOA covenants and deed restrictions can be stricter than city rules. Check yours before you build.
How to apply
Common questions
- When does a pergola, play set, or carport need a building permit in Fairfax County?
- Carports, attached pergolas and detached structures over 256 sq ft need a building permit. One-story detached playhouses and similar structures up to 256 sq ft are exempt (USBC 108.2 item 2). Play equipment isn't a building.
- Where do I apply for a pergola, play set, or carport permit in Fairfax County?
- Apply through PLUS permitting portal, or call 703-222-0801.
Sources
- Fairfax County Zoning Ordinance § 3101.6.C, Historic Overlay Districts: building permits (enCodePlus). Checked 2026-10-23
(1) ARB review and approval is required before the issuance of a building permit by the Director and approval of a sign permit by the Zoning Administrator, as listed below... ARB review and approval is not required for building permits that are only for the…
- Virginia USBC, 13VAC5-63-80 Section 108.2, Exemptions from application for permit. Checked 2026-10-23
2. One story detached structures used as tool and storage sheds, playhouses, or similar uses, provided the building area does not exceed 256 square feet... 5. Fences of any height unless required for pedestrian safety as provided for by Section 3306 or used…
- 44 CFR 59.1, definition of development (NFIP). Checked 2026-10-19
Development means any man-made change to improved or unimproved real estate, including but not limited to buildings or other structures...
- 44 CFR 60.3, floodplain management criteria. Checked 2026-10-19
Require permits for all proposed construction or other development in the community...
- Virginia Chesapeake Bay Preservation Area Designation and Management Regulations (9VAC25-830-80, -140). Checked 2026-10-21
Land development may be allowed in the Resource Protection Area, subject to approval by the local government, only if it [is water dependent, is redevelopment, or fits the other listed cases]... The 100-foot wide buffer area shall be the landward component …
- Fairfax County LDS, FAQs on Resource Protection Areas (Chesapeake Bay Preservation Ordinance, Chapter 118). Checked 2026-10-21
Any development, land disturbing activity or other use within an RPA generally requires prior approval from the county... [Fences are allowed without an exception if they don't block surface flow or remove trees; sheds, detached garages, pools, gazebos and …
- Fairfax County Zoning Ordinance § 4102.7.A(5), (6), (17), rear setback coverage, freestanding accessory structures, swimming pools. Checked 2026-10-21
All accessory structures and uses may cumulatively cover no more than 30 percent of the minimum rear setback on any lot located in a conventional residential district... [Coverage includes] children's play equipment, sports court, pool and associated deckin…