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Exterior work in Fairfax County, VA: permits, code & costs
Fairfax County publishes the clearest exemption language in the region. Its own guidance lists replacement of roof shingles, re-siding with similar material, direct replacement of existing windows and doors, and gutters as work that does not require a county permit — all of it flowing from the Virginia USBC.
- Permit authority: Fairfax County Land Development Services (LDS)
- We pull the permits where they are required
- Free inspection with photos and a written report
Free estimate in Fairfax County
Tell us the address and what is going on. We reply the same business day.
Permits by trade
What needs a permit in Fairfax County
This is the question that changes most between jurisdictions, and getting it wrong is expensive in both directions — an unpermitted alteration surfaces at resale, and pulling a permit nobody required wastes weeks.
| Trade | Status | What that means |
|---|---|---|
| Roofing | Usually exempt | Fairfax County lists "replacement of roof shingles" as exempt, along with replacement of less than 256 square feet (9 boards) of roof plywood — with an explicit exception where the sheathing must be fire-rated, as on many townhomes. Past that plywood threshold, or on a fire-rated townhome assembly, a permit applies. |
| Siding | Usually exempt | "Re-siding of building/home with similar material" is named directly on the county’s exempt list. Similar material is the operative phrase. |
| Windows | Usually exempt | "Direct replacement of existing windows and doors" is exempt. Changing the framed opening is not. |
| Gutters | Usually exempt | "Gutters" appears outright on the county’s exempt list. |
Permit-exempt does not mean code-exempt
Every jurisdiction on this site says some version of the same thing: work that needs no permit still has to meet the building code. Underlayment, ice barrier, fastening, flashing, and ventilation are all required whether or not an inspector ever looks. Where no one inspects, the documentation your contractor produces is the only proof the hidden work was done right.
Code & licensing
The rules behind the answer
Building code in force
The 2021 Virginia Uniform Statewide Building Code, effective January 18, 2024 with mandatory compliance from January 18, 2025.
Virginia DPOR license — required over $1,000
Virginia requires a DPOR contractor license for any construction, repair, or improvement contract worth more than $1,000. Classes are set by project value: Class C covers $1,000–$30,000, Class B $30,000–$150,000, and Class A above $150,000. Ask which class a bidder holds — a Class C licensee cannot legally take a $60,000 job. You can verify any license free on the DPOR site before you sign.
Inspections
Because most re-roof, re-side, and in-kind window work is permit-exempt in Virginia, there is usually no county inspection on these jobs — which puts the entire quality burden on your contractor and on you. That is exactly why we photograph the deck, the wrap, and the flashing before they are covered. When a permit does apply (structural deck repair, enlarged openings, or historic review), expect a framing or sheathing inspection before cover and a final inspection at completion.
Historic & design review
Historic overlay districts and the towns inside the county
Fairfax County contains incorporated towns — Vienna, Herndon, Clifton — that administer their own requirements, and the county has historic overlay districts of its own. The USBC exemption also carries the standing exception for historic districts and flood hazard areas. Your address determines the reviewer, not your mailing address.
Local knowledge
Important things to know in Fairfax County
The townhome fire-rated sheathing exception is real
This is the exemption detail that catches people. On many Fairfax townhomes the roof sheathing at the party wall is a fire-rated assembly, and replacing it is not covered by the ordinary 256-square-foot plywood exemption. A crew that treats a townhome deck like a detached-home deck can create a fire-separation defect that no one inspects and that surfaces at resale.
McLean and Great Falls: bigger roofs, steeper pitch, real slate
The high-value stock in McLean and Great Falls skews toward large, steep, complex roofs, and genuine slate and standing-seam metal are common rather than exotic. Those are different trades from asphalt shingle with different crews and different lead times. Getting an asphalt-shingle price on a slate roof is not a bargain; it is a mismatch.
HOA covenants are the practical constraint here
Across Reston, Burke, and much of the county, the binding limit on your color and material is the HOA architectural review, not the county. County-exempt work can still be rejected by your association after installation, and removing new siding is a total loss. Get the written HOA approval before we order.
Where we work here
Neighborhoods and communities
- McLean
- Vienna
- Great Falls
- Oakton
- Reston
- Springfield
- Annandale
- Burke
Neighborhoods we cover in Fairfax County
McLean
McLean combines two things that reward doing exterior work properly: large, complex, high-value roofs, and a state code that means…
Local details →Great Falls
Great Falls is the largest-roof, longest-run work we do in Virginia — big houses on big lots, frequently with premium materials an…
Local details →Vienna
Vienna is a jurisdiction trap worth understanding before you start. The Town of Vienna is incorporated and administers its own req…
Local details →Services in Fairfax County
Roof Replacement & Repair
Architectural shingle, standing-seam metal, and flat/low-slope systems. Leak diagnosis, storm damage documentation, and full tear-off replacement.
Costs & details →Siding Replacement
James Hardie fiber cement, insulated vinyl, and cedar. We correct the wrap and flashing behind the siding, not just the panel you can see.
Costs & details →Window Replacement
Full-frame and insert replacement in vinyl, fiberglass, and clad wood. Correct sizing, correct flashing, no drafts at the sill.
Costs & details →Gutters & Downspouts
Seamless 5" and 6" aluminum, half-round copper, and guard systems — sized and pitched to actually move DMV storm volume away from the foundation.
Costs & details →Sources
- Fairfax County LDS — When is a permit required
- Virginia USBC §108 — Application for permit (permit exemptions)
- Virginia DHCD — Uniform Statewide Building Code
- Virginia DPOR — Board for Contractors licensing
Permit, code, and licensing details on this page were last verified against these sources on August 29, 2026. Requirements change and every property is different — we confirm your specific address with Fairfax County Land Development Services (LDS) (703-222-0801) before work starts. This page is general information, not a code determination for your property.
Other jurisdictions
The rules change at the county line
This is not a formality. The same re-roof is permit-exempt in Arlington and a filed permit in DC. If you own in more than one jurisdiction, read both.
Get a real number for your Fairfax County property
Free inspection, written scope, fixed price — and we handle the permit where one is required.