Virginia Doesn't Require a Permit to Re-Side Your House. That's Exactly Why the Part Behind the Siding Is on You: What Siding Replacement Really Costs in McLean, Arlington & Great Falls (2026)
Most homeowners pricing a siding replacement in McLean, Arlington or Great Falls assume a project that large goes through the county. Scaffolding wraps the whole house, the old cladding fills a dumpster, and for two or three weeks the place looks like a construction site. So it surprises people to learn that in Virginia, replacing the siding on a single-family home usually needs no building permit at all.
That sounds like good news, and partly it is. It also means nobody from Fairfax or Arlington County will look at the layer that actually keeps water out of your walls. The siding is the part you see. The work behind it is the part that has to last, and nobody inspects it but your contractor.
Here is what a siding replacement really involves in McLean, Arlington and Great Falls in 2026, what it costs, and how to make sure the hidden work gets done right.
Why Most Virginia Siding Jobs Don’t Need a Permit
The Virginia Uniform Statewide Building Code lists work that is exempt from permits. One item is the “replacement of an unlimited amount of roof covering or siding” on one- and two-family homes (Groups R-3, R-4 and R-5). The exemption holds unless the house sits where the code’s nominal design wind speed is above 100 mph. That carve-out is aimed at hurricane-exposed coastal areas, and Northern Virginia generally falls below it, but confirm with Fairfax County or Arlington County permitting for your address.
There are two exceptions that matter locally:
- Historic districts. The building official may require a permit for replacement siding, roofing and windows on buildings in a locally designated historic district. Arlington has several local historic districts, and Fairfax County has Historic Overlay Districts. Those can also bring a separate architectural review that controls material and profile.
- Flood hazard areas. A permit may be required for otherwise-exempt work in a special flood hazard area. That can include lots along streams in parts of McLean and Great Falls, so check the county floodplain map.
The exemption covers like-for-like cladding. Once the job goes further, such as replacing rotted sheathing over a large area, repairing studs or headers, enlarging windows or adding a bump-out, you are into an alteration permit. HOAs are a separate matter. Many McLean and Great Falls communities have covenants on siding material and color whatever the county requires, so check yours before you choose a product.
What this means for you: with no inspection, the quality of the weather barrier, flashing and fastening is set by your contract. Write it into the scope.
What Siding Replacement Costs in McLean and Northern Virginia (2026)
National cost guides show a very wide spread for James Hardie fiber cement because product lines differ so much; This Old House, for example, reports a range starting around $11 per square foot and climbing steeply for premium lines. Northern Virginia labor, larger homes and more complex elevations usually put local projects toward the upper part of the typical band. These are hedged planning ranges, not quotes:
| Siding material | Typical installed range (NoVA, estimate) | What drives the number |
|---|---|---|
| Premium vinyl / insulated vinyl | ~$7–$12 / sq ft | Profile, insulation backing, color |
| Fiber cement (lap, panel, shingle) | ~$12–$20 / sq ft | Factory vs. field paint, trim package, story height |
| Engineered wood | ~$10–$16 / sq ft | Product line, paint, detailing |
| Real cedar (clapboard or shingle) | ~$16–$30+ / sq ft | Grade, finish, labor-intensive installation |
For a typical 3,000-to-4,500-square-foot McLean or Great Falls colonial with trim, soffits and two or more stories, full fiber cement replacement often lands in the $45,000 to $100,000+ range. Stone or brick accent walls, tall gables and a lot of hidden repair can push it past that.
What moves the price most:
- Square footage and stories. Three-story rear elevations on walkout lots need more scaffolding, more labor and more time.
- Trim and corners. Window and door trim, frieze boards, corner boards and soffit/fascia can add 15 to 30 percent to the cladding cost.
- What’s found underneath. Rotted sheathing, failed window flashing and rim-joist damage are the most common change orders. Budget a contingency (10 to 15 percent is reasonable on a 1970s–1990s home).
- Lead-safe work on older homes. Pre-1978 houses add containment and cleanup time, covered below.
- Windows. If the windows are near the end of their life, replacing them during re-siding is far cheaper than doing it later (see our guide to energy-efficient windows in the DMV). The flashing gets done once, properly.
The Part Behind the Siding: What a Proper Re-Side Includes
The cladding is the visible part, but a wall’s ability to shed water comes from the layers behind it. On a well-built re-side, your contract should name each one:
Water-resistive barrier (house wrap)
The old felt or wrap almost always comes off with the old siding. A new continuous water-resistive barrier goes on, lapped shingle-style so water runs outward, with seams taped per the manufacturer. Some products add a drainage gap or a rainscreen mat behind the cladding, which helps walls dry in the DMV’s humid summers.
Window and door flashing
This is where most wall leaks start. Every opening should get sill pans or flexible flashing at the sill, side flashing, and a head flashing or drip cap that sends water out over the trim. This is integrated with the wrap, never caulked on top of it. If your installer’s plan for windows is “caulk around the trim,” keep looking.
Kick-out flashing
Wherever a roof edge dies into a sidewall, such as a garage roof against a two-story wall, a kick-out flasher turns water away from the siding. Missing kick-outs are a well-known cause of hidden wall rot.
Clearances and fasteners
Fiber cement manufacturers specify clearances from roofs, decks, hardscape and grade, plus fastener type and spacing. Those details affect both performance and warranty eligibility, so ask how the crew will meet them.
Sheathing repair
Expect some. Before signing, agree on a unit price for replacing damaged sheathing so a surprise doesn’t become a negotiation.
Lead-Safe Rules If Your House Was Built Before 1978
Much of McLean, Arlington and older Great Falls was built before 1978, so painted wood siding and trim may contain lead. The EPA’s Renovation, Repair and Painting (RRP) Rule applies when a contractor disturbs more than 20 square feet of painted exterior surface on a pre-1978 home. Nearly every siding replacement does.
Under RRP, the work must be done by an EPA-certified firm using lead-safe practices: containment sheeting on the ground, limits on high-dust removal methods, and specified cleanup and verification. That adds cost and time. It also protects your family, your landscaping and your neighbors. If you have young children or plan to sell, it’s not where to save money.
Wanamaker Group LLC, which does business as Karma Construction Group, is an EPA Lead-Safe Certified Firm (NAT-F236115-1); see our licenses page.
Fiber Cement, Vinyl or Wood? Choosing for a Northern Virginia Home
- Fiber cement is the most common premium choice here. It’s dimensionally stable, noncombustible, and available factory-finished in deep colors, which matters as homeowners move toward warmer, darker exteriors. It’s heavy and needs experienced installers and careful cutting with dust control.
- Engineered wood looks like real wood with easier handling. Edge sealing and paint maintenance matter.
- Real cedar suits historic or high-end architectural homes and is sometimes required by review boards. It looks better than anything else and needs the most maintenance.
- Premium vinyl costs the least and is low-maintenance. HOAs in some luxury McLean and Great Falls communities restrict it, and it may not suit the architecture of a custom home.
Color matters as much as material. Fall 2026 design coverage keeps pointing toward warmer, earthier and darker palettes. Dark colors on vinyl can be risky because of heat distortion, while factory-finished fiber cement handles them better.
Is Fall a Good Time to Replace Siding in Northern Virginia?
Yes. From September through early December, temperatures stay inside most products’ installation and caulking ranges, rain is moderate, and crews are working past the summer peak. Finishing before winter also means your house goes into the freeze-thaw season with a sealed envelope. Field painting needs temperatures above the paint’s minimum, so factory-finished products extend the season.
Frequently Asked Questions
Do you need a permit to replace siding in Virginia?
Usually not for a single-family home. The Virginia Uniform Statewide Building Code exempts replacement siding on one- and two-family dwellings, except where the nominal design wind speed exceeds 100 mph. The building official may still require a permit in a local historic district or a special flood hazard area, and structural repairs need one.
How much does it cost to replace siding on a house in McLean, VA?
It depends on size, material and what’s found behind the old siding. As a planning estimate, full fiber cement replacement on a larger McLean or Great Falls home often falls between about $45,000 and $100,000+, with vinyl lower and real cedar higher.
Is James Hardie siding worth it in Northern Virginia?
For many homes, yes. Fiber cement stands up to humidity, pests and fire, holds factory paint well, and consistently ranks among the better-returning exterior projects in industry cost-vs-value data. The benefit depends on proper installation and flashing.
Does replacing siding on an old house require lead-safe practices?
If the home was built before 1978 and the work disturbs more than 20 square feet of painted exterior, federal RRP rules require an EPA-certified firm using lead-safe work practices.
How long does a siding replacement take?
For a typical Northern Virginia single-family home, expect roughly two to four weeks on site. That depends on size, weather, repair findings and whether windows are replaced at the same time.
Plan the Wall, Not Just the Siding
Karma Construction Group has built and renovated homes across the DMV since 2012. We scope siding replacements around the full wall assembly — weather barrier, flashing, trim, windows and the repairs that turn up when the old cladding comes off. Our Virginia work is delivered under Class A contractor license #2705178913 and our Maryland work under MHIC #108917; see our licenses.
Call 202-798-7663 or request a free consultation at karmaconstructiongroup.com to plan your siding replacement before winter.
Siding-only project? Our exterior division, DMV Exterior, covers siding replacement across DC, Maryland and Northern Virginia — what’s included, permit rules by jurisdiction and planning-cost ranges.