Do I need a permit for roof replacement or repair in Fairfax County?
It depends. Whether roof replacement or repair needs a permit in Fairfax County comes down to the details of your project.
Under the Virginia USBC (13VAC5-63-80, Section 108.2), replacement of an unlimited amount of roof covering on a one- or two-family dwelling (Groups R-3, R-4, R-5) is exempt from a building permit provided the structure is NOT in an area where the nominal design wind speed is greater than 100 mph. In higher-wind areas, and for any building outside those residential groups, a permit is required. Replacing more than 256 square feet of roof decking, or decking originally required to be fire-retardant-treated, is not exempt and requires a permit. Confirm your wind zone and scope with your local building department before you begin.
Documents you may need
- Permit applicationSometimes required
- Scope of work (roof covering only vs. decking replacement, material, wind zone)required
- Contractor license informationSometimes required
Possible inspections
- Roof sheathing / nailing inspection where decking is replaced under a permit
- Final roofing inspection where a permit is issued
Frequently asked questions
- Do I need a permit for roof replacement or repair in Fairfax County?
- It depends. Whether roof replacement or repair needs a permit in Fairfax County comes down to the details of your project. Under the Virginia USBC (13VAC5-63-80, Section 108.2), replacement of an unlimited amount of roof covering on a one- or two-family dwelling (Groups R-3, R-4, R-5) is exempt from a building permit provided the structure is NOT in an area where the nominal design wind speed is greater than 100 mph. In higher-wind areas, and for any building outside those residential groups, a permit is required. Replacing more than 256 square feet of roof decking, or decking originally required to be fire-retardant-treated, is not exempt and requires a permit. Confirm your wind zone and scope with your local building department before you begin.
- Who issues the permit in Fairfax County?
- The local building department for Fairfax County handles permitting. This page lists its contact details and online portal. Your mailing city is not always the permitting authority, so confirm the jurisdiction before you apply.
- How do I find out the exact requirements for my project?
- Run the free PermitRoadmap check for your specific project and answers. It returns the likely permits, documents, inspections, and next steps, each linked to its official source.
PermitRoadmap is an independent informational service and is not affiliated with any city, county, state agency, or permitting authority. Results are informational and do not replace confirming requirements with the local permitting authority.