Bathroom Remodel Cost Calculator

What Drives Bathroom Remodel Cost

Two things set the number: how big the bathroom is, and how much of it is being changed. Size sets the quantity of tile, drywall, flooring and fixtures. Scope sets everything else, and scope is the variable that moves a budget by a factor of ten.

Typical 2026 US ranges by scope:

• Cosmetic refresh: 3,000 to 8,000 dollars. New vanity, faucet, toilet, mirror, light fixture, paint and possibly flooring. Nothing structural, no plumbing relocated.
• Mid range full remodel: 12,000 to 25,000 dollars. Everything down to the studs and subfloor, new tile, tub or shower, vanity, toilet, ventilation and lighting, with fixtures staying roughly where they were.
• High end or layout-changing remodel: 30,000 to 70,000 dollars and up. Moving plumbing, custom tile work, frameless glass, freestanding tub, heated floor, high end fixtures, or expanding the room into adjacent space.

On a per square foot basis, a full remodel generally runs roughly 200 to 700 dollars per square foot. Cosmetic refreshes fall below that band. Bathrooms are the most expensive room per square foot in a house, because a very small area contains plumbing, electrical, ventilation, waterproofing, tile and cabinetry all at once.

Scope and Cost Reference Table

The Labor and Materials Split

Labor is typically 40 to 65 percent of a bathroom remodel, higher than in most other rooms. A bathroom needs a plumber, an electrician, a tile setter, a drywall finisher, a painter and usually a general contractor coordinating them, all working in a room too small for two trades at once. That sequencing is what makes bathroom labor expensive.

Where a mid range budget generally goes:

• Plumbing labor and rough-in: 15 to 20 percent. Higher if anything moves.
• Tile and waterproofing: 15 to 25 percent. Labor dominates here, not the tile itself. Mosaic, herringbone and large format tile all cost more to install than standard subway or field tile.
• Cabinetry and countertop: 10 to 20 percent. A stock vanity is a few hundred dollars, a custom one several thousand.
• Fixtures: 10 to 15 percent. Toilet, tub or shower base, sink, faucets and shower valve.
• Electrical and lighting: 5 to 10 percent. GFCI protection, exhaust fan, vanity lighting and any heated floor circuit.
• Demolition and disposal: 3 to 7 percent.
• Drywall, paint and trim: 5 to 10 percent.
• Permits and inspections: 1 to 3 percent.

Why Moving Plumbing Costs So Much

Relocating plumbing is the single biggest cost multiplier in a bathroom remodel. Keeping the toilet, sink and shower where they are means the existing supply and drain lines stay put and the work is essentially finish work. Moving them means opening floors and walls, and it triggers a chain of consequences.

Drain lines need slope, generally a quarter inch of fall per foot, so a drain cannot simply be shifted sideways. It has to be re-routed with the correct pitch, which often means cutting into or notching floor joists, which in turn may require structural reinforcement or engineering sign-off. Toilets are the worst case: a 3 inch drain and a vent stack are involved, and moving one more than a short distance frequently means opening the ceiling of the room below.

Venting must be reworked to code as well, and older homes rarely have vent configurations that survive a layout change untouched. Once walls and floors are open, existing conditions surface: galvanized supply lines, cast iron drains, undersized wiring, no ground, rot around an old shower pan or under a toilet flange. Each is a legitimate additional cost that no estimate can foresee.

The practical effect is that moving a toilet, tub and vanity can add 5,000 to 15,000 dollars over an otherwise identical remodel that leaves them in place. Where the budget is tight, keeping the layout is the most effective single decision available.

Permits

Most jurisdictions require a permit for plumbing changes, electrical work and structural alterations. A straight fixture swap in the same location is often exempt, though local rules vary. Permit fees for a bathroom typically run 200 to 1,500 dollars depending on the jurisdiction and the scope.

Permits are worth pulling. Unpermitted work surfaces at resale, can complicate insurance claims, and may have to be opened up and re-inspected later at far greater cost. Inspections also catch the waterproofing and venting mistakes that turn into leaks and mold a few years on. A licensed contractor normally pulls the permits as part of the job.

Contingency

Set aside 15 to 20 percent of the budget as contingency, and treat it as part of the plan rather than a cushion to be spent on upgrades. Bathrooms hide more surprises than any other room, because they combine water, concealed plumbing and decades of previous work.

• Water damage or rot in the subfloor around the toilet or under a shower pan.
• Mold behind tile or in wall cavities.
• Failing galvanized supply lines or cast iron drains that must be replaced once exposed.
• Wiring without a ground, or a circuit without GFCI protection, requiring updates to current code.
• An exhaust fan venting into an attic instead of outside.
• Out of plumb walls or an uneven floor that must be corrected before tile goes down.
• Asbestos in old flooring or vermiculite insulation, or lead paint in homes built before 1978, both of which require specialist handling.

Where to Save and Where Not To

Savings that hold up: keep the layout, use a stock vanity rather than custom, choose porcelain or ceramic tile in a standard size and simple pattern, keep tile to a reasonable height rather than full ceiling, select mid range fixtures from a mainstream brand, refinish rather than replace a sound cast iron tub, and do the demolition and painting personally if time allows.

Savings that tend to backfire: skimping on waterproofing behind tile, using a cheap shower valve that is awkward to service, undersizing or omitting the exhaust fan, using a bargain contractor without references or a license, and buying the cheapest toilet and faucet available. Everything hidden behind tile is expensive to reach again, so the money belongs in the parts that are hard to replace.

Timeline

A cosmetic refresh takes 1 to 2 weeks. A mid range full remodel runs 3 to 5 weeks. Layout changes push it to 5 to 8 weeks, and high end work with custom items can take 3 months. The work itself is only part of that: inspections have to be scheduled between stages, tile has to cure, paint has to dry, and long lead items such as custom vanities, specialty tile and glass shower enclosures commonly run 4 to 12 weeks from order to delivery.

Ordering fixtures and finishes before demolition starts is the single most effective way to avoid a stalled job. A crew waiting on a back-ordered vanity costs money and calendar time in equal measure. If the house has only one bathroom, plan for the household disruption as carefully as the budget.