Town of Herndon Building Permits for Bathroom Remodels

Town or county: the first question

Herndon is an incorporated town inside Fairfax County. For homes inside town limits, the Town of Herndon's Building Inspections office issues building and trade permits. Fairfax County still provides many services to town residents, but for a bathroom remodel inside the town, the Town is your building department.

The catch is that the Herndon name covers more ground than the town itself. Plenty of homes with a Herndon mailing address sit outside town limits in unincorporated Fairfax County. For those homes, Fairfax County Land Development Services issues permits instead. Before anything else, confirm which side of the line your home is on. Your real estate tax bill is a good place to look, and the Town can confirm it.

What the Town says needs a permit

The Town's permit page starts from the Virginia Uniform Statewide Building Code, which requires a permit before constructing, enlarging, altering or demolishing a building, or installing or altering equipment the code regulates. The Town then puts it plainly: a building permit is generally required for all alterations, and additions or alterations to electrical, plumbing or mechanical systems require separate permits. Read it on the Town's site: https://www.herndon-va.gov/departments/public-works/building-inspections/how-do-i-apply-for-a-permit.

For a bathroom, that means a typical remodel can involve several permits rather than one:

• A building permit for the alteration itself, especially if walls, framing or the layout change
• A plumbing permit when the toilet, shower valve, drains or supply lines are replaced or moved
• An electrical permit for new circuits, relocated lights or outlets, or a heated floor
• A mechanical permit when the exhaust fan and its duct are installed or rerouted

Not every bathroom project needs all of these. Painting and swapping a mirror generally do not. Where the line falls for your specific scope is something we confirm with the Town rather than guess at.

How applications are submitted

The Town strongly encourages submitting applications and plans by email to its Building Inspections office, and its permit page sorts residential work by type, with interior alterations listed separately from mechanical, electrical and plumbing/gas trade permits.

Two Town requirements that surprise people

First, contractors doing work in the town must meet the Town's business license requirements, and a business license must be in place before applying for a permit. That is a fair question to ask any contractor you are considering: do you hold what the Town requires to pull a permit here?

Second, the Town asks that outstanding property taxes, levies and fees be paid to its finance department before a permit is applied for. Emergency permits, such as for water service, electrical service or heat, can be applied for before those requirements are met. If you have an open balance with the Town, sort it out early so it does not hold up your project.

Inspections shape the schedule

Trade work is inspected while the walls and floor are still open, before tile and drywall go up, and again at the end. That means a realistic schedule includes waiting for inspections. A contractor who suggests closing the walls before the rough-in inspection is creating a problem for you, not saving time.

Exterior changes and the historic district

If your home is in Herndon's Historic District Overlay, exterior changes generally need a Certificate of Appropriateness from the Historic District Review Board before work begins (https://www.herndon-va.gov/departments/community-development/historic-preservation/historic-district-faqs). Most bathroom work is inside, but a new exhaust vent cap on a wall or roof, or a replaced bathroom window, is an exterior change. Plan those early if they apply.

If you are outside town limits

Fairfax County Land Development Services lists bathroom remodels under interior alterations that require a permit, and lists new, repaired or relocated plumbing fixtures as needing one too. It also lists replacing a bathroom vanity or countertop, replacing tile or flooring, and painting among work that does not need a county permit. See https://www.fairfaxcounty.gov/landdevelopment/when-permit-required.

What we do not publish

We do not list permit fees or review times here. They change, and the Town and the county publish their own. We include the permit requirements for your project in the written scope and explain who handles each one.