Bathroom Remodeling in Northern Virginia and Washington DC: 2026 Costs, Permits and Licensed Pros

What a bathroom remodel costs in Washington DC

Our numbers start with national remodeling cost data and apply the metro's construction cost factor of 1.04, published by the U.S. Army Corps of Engineers. The same bathroom costs about 4% more here than the national average. That premium is smaller than in coastal cities. The three-jurisdiction permit and license split adds work the national average does not include.

Estimates for 2026, including labor and standard parts. Washington DC prices use the metro's construction cost factor of 1.04 (US average = 1.00) from the U.S. Army Corps of Engineers Area Cost Factors. Your quote depends on access, materials and the condition of the home.

For your own room size, finish level and ZIP code, run the cost estimator below or open the full bathroom cost estimator.

What drives a DC bathroom budget

Installed tile here runs $10.5 to $42 per square foot, so the material you pick moves the budget as much as the room size does. Small bathrooms cost more per square foot. The valve, toilet and vanity cost the same whether the room is 40 or 80 square feet. A powder room at $4,150 to $14,550 is the cheapest way into a project here, and a primary bath at $20,800 to $62,400 is the most expensive.

Moving a drain: rowhouse, rambler or split level

Moving a toilet or shower drain is one of the larger line items in any bathroom. What the house sits on decides the price, and the DC area's three common housing types each handle a moved drain differently.

A toilet needs a 3-inch drain with a vent close enough to satisfy the plumbing code. That is why a small move can turn into a big one. In a DC rowhouse the work often happens above a finished basement ceiling, so plan for patching that ceiling too.

Waterproofing and shower rules in the DC metro

A leaking shower soaks the framing and the ceiling below long before anyone sees a stain. In a rowhouse, that ceiling belongs to the floor below. The DC metro enforces three code books, but the shower rules that matter to a homeowner are the same in all three.

What the inspector checks in the shower

• Pan: a continuous waterproof pan tied into the drain and flood-tested before any tile goes down.
• Valve: a pressure-balance or thermostatic valve with a maximum of 120°F, which keeps the water temperature steady when someone else opens a tap. An old two-handle valve cannot stay once the wall is open.
• Glass: tempered or laminated safety glass in shower doors and tub enclosures.
• Walls: smooth, hard, nonabsorbent surfaces behind the tile, to at least 70 inches above the drain.
• Ventilation: an exhaust fan ducted outside with a backdraft damper. Venting into the attic fails inspection.

Why old DC showers usually need more than new tile

The District is the old core of this metro. About 31% of DC homes were built before 1940 and 66% before 1980, according to the Census Bureau's 2024 American Community Survey. Arlington (52.7% before 1980), Alexandria (54.8%) and Montgomery County (49.1%) are close behind. In those houses, tile set over sound backer board with the fixtures left alone needs no permit. In practice, once old tile comes off a shower more than 20 years old, the backer behind it is often soft. Replacing it and swapping the valve while the wall is open turns the job into permitted work.

The outer Virginia counties are different. Loudoun's median home was built in 2003 and only 11% of its homes predate 1980. A bathroom there is more likely to be a first remodel than a repair of original work.

Ventilation and humidity

The metro sits in climate zone 4A, mixed-humid, according to the U.S. Department of Energy. Reagan National averages 41.82 inches of precipitation a year and Dulles 43.24 inches, with July the wettest month in the city. A bathroom fan on a timer or humidity sensor, ducted outside, is the cheapest defense against mold in a house that is closed up for the summer.

Water-saving and lead rules

Fixture flow limits

Federal rules cap new fixtures sold in the United States: toilets at 1.6 gallons per flush, showerheads at 2.5 gallons per minute and bathroom faucets at 2.2 gallons per minute. Anything a showroom in DC, Maryland or Virginia sells already meets those limits. Unlike California, none of the three jurisdictions requires you to replace old fixtures in the rest of the house when you remodel one bathroom.

Lead-safe work in pre-1978 homes

Anyone paid to disturb painted surfaces in a home built before 1978 must be certified under the EPA's Renovation, Repair and Painting rule. That covers most of DC, Arlington, Alexandria and the inner Maryland suburbs. Ask your remodeler for the firm's RRP certification before demolition starts, and keep children and pregnant women out of the work area.

Water service lines

DC Water estimates the District has more than 42,000 service lines made of lead or galvanized iron, and homes built before the 1980s were typically built with a lead service line. Its Lead Free DC program replaces them, and private-side replacement is free during DC Water and DDOT construction projects if the owner signs a Right of Entry form. If your bathroom project includes new supply piping, find out what your service line is made of. In Montgomery and Prince George's counties, plumbing permits and licenses run through WSSC Water, not the county.

Planning for aging in place

A bathroom remodel is the cheapest time to make the room work for someone with a walker, a bad knee or a wheelchair. The walls and floor are already open.

Two code points matter in a narrow hall bath. A toilet needs at least 15 inches from its centerline to any side wall or fixture, with a 30-inch-wide space and 24 inches clear in front. In an older Arlington or Silver Spring bathroom, those numbers often decide whether a wider shower fits at all. If someone in the house uses a wheelchair, have the designer draw the turning space before you choose tile. Our guide to 3D renderings can show the room before anything is ordered.

Do you need a permit?

Yes, for almost any real bathroom remodel. Which office you apply to depends on your address.

District of Columbia

The DC Department of Buildings requires a signed construction contract and an estimated cost of construction before it issues a permit. Fees follow the value of the work: $33 for work under $500, $65 for $501 to $1,000, and $30 plus 2% of construction value for $1,001 to $1 million, per the DOB fee schedule. A 0.13% Green Building Fee applies to alterations in that range, and the first payment is a filing deposit of 50% of the assessed fee. Electrical outlets cost $20 per 10, and light fixtures $8 per 10.

Two DC rules catch homeowners. Homeowners cannot pull trade permits; only licensed and bonded master trade professionals can. In a historic district the no-permit list does not apply, so check your property's status in DOB's Scout tool before you assume a small job is exempt. DOB's Homeowner's Center reviews interior remodeling up to 500 square feet, including bathrooms without structural change, and aims to issue those permits within five business days. The general line is (202) 671-3500.

Montgomery County, Maryland

The Montgomery County Department of Permitting Services takes applications online, charges a non-refundable filing fee at application, and wants inspections requested at least 24 hours ahead. Plumbing and gas permits and licenses in the county run through WSSC Water, which requires a WSSC-licensed plumber or gasfitter for most plumbing work. DPS offers in-office Fast Lane appointments for same-day permits on projects that qualify for its fast-track programs; questions go to 240-777-6395. The county's fee estimator gives a ballpark. DPS staff do the final calculations.

Northern Virginia

Virginia enforces the 2021 Uniform Statewide Building Code, and each county or city has its own building official. Fairfax County requires a permit for bathroom remodels, plumbing fixtures, relocated electrical fixtures and new window or door openings, and does not require one for like-for-like replacement of plumbing and electrical work, tile and flooring, or bathroom countertops and vanities. Its minimum base permit fee is $141.75, a re-inspection costs the same, and residential alteration work is charged 3.00% of the estimated cost of construction, per the county fee schedule. A 2.0% Code Academy levy is added to building development fees.

Arlington issues permits through its Permit Arlington center and Accela portal. Alexandria, Fairfax City, Vienna, Herndon, Falls Church, Manassas and Manassas Park handle their own permitting separately from the counties around them. Confirm which jurisdiction your address sits in before anyone submits anything. A Falls Church mailing address is usually in Fairfax County, not the City of Falls Church.

How long a bathroom remodel takes

On site, the work follows a fixed order: demolition to the studs, framing repairs and grab bar blocking, rough plumbing, electrical and fan, one rough inspection on a combined permit, backer board and waterproofing with the pan flood test, then tile, fixtures, glass and the final inspection. Glass is measured after the tile is done. If this is the only bathroom in the house, agree with the remodeler on how you will have a working toilet each night.

Areas we cover

GOLDGCP bathroom remodelers work across the Washington DC metro, including:

• Washington DC
• Arlington and Alexandria
• Fairfax and Northern Virginia
• Bethesda and Silver Spring
• Montgomery County

Enter your ZIP code below to see bathroom prices for your area and the remodelers who cover it.