Free project planning tool

Bathroom Remodel Cost Calculator

Budget the measurable finish areas and major allowances separately so tile, fixtures, vanity, trade work, and fees stay easy to compare.

Formula reviewedJuly 24, 2026Inputs stay on your device
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01

What does the bathroom remodel cost calculator calculate?

Price floor and wall finishes from their measured areas and local installed rates, then add fixture, vanity, trade, and permit allowances. Apply contingency to the entered scope only. Waterproofing, plumbing relocation, ventilation, electrical upgrades, structural repair, accessibility, hazardous materials, tax, and temporary facilities must be included in quotes or added separately.

02

Component-based bathroom remodel budget

Total = (floor area × rate + wall area × rate + fixtures + vanity + trade work + fees) × contingency factor

Measured finishes use separate installed rates while fixtures, cabinetry, remaining trade work, and project fees stay visible as allowances. Contingency follows the entered subtotal, making omitted zero-price components obvious rather than disguising them as free work.

03

How to measure for an accurate estimate

  1. Create a dimensioned plan and wall elevations showing fixtures, doors, clearances, tile limits, niches, accessories, outlets, lighting, and ventilation.
  2. Measure floor and every tiled wall face separately, including curbs, benches, niches, jambs, and returns where relevant.
  3. Inspect moisture damage, subfloor, framing, drainage, water supply, venting, electrical protection, and exhaust route before requesting proposals.
  4. Issue consistent fixture, waterproofing, tile, vanity, glass, finish, permit, demolition, and cleanup requirements to each bidder.
04

Eighty-square-foot bathroom renovation

An 80-square-foot floor is quoted at $15, 120 square feet of wall tile at $18, with $5,000 fixtures, $2,500 vanity, $10,000 trade work, $800 fees, and 15% contingency.

The entered subtotal is $21,660 and the bathroom planning total is $24,909.
05

Before you purchase material

  • Choose plumbing fixtures early enough to coordinate rough-in dimensions, valve parts, drains, blocking, electrical needs, and delivery.
  • Require one compatible waterproofing assembly with documented details at drains, penetrations, corners, niches, curbs, and transitions.
  • Compare tile proposals by substrate preparation, membrane, layout, edge profiles, mortar, grout, movement joints, sealing, and testing.
  • Verify exhaust capacity and discharge route, electrical protection, safety glazing, accessibility goals, and permit requirements during design.
06

Common questions

Why separate floor and wall tile rates?

Shower walls, bathroom floors, niches, waterproofing, substrates, tile sizes, patterns, edge details, and access can require different products and labor. Separate areas make those scopes comparable and prevent a simple floor rate from understating detailed vertical wet-area work.

What belongs in the plumbing fixture allowance?

List the tub or shower base, valves, trim, showerhead, toilet, faucets, sinks, drains, supplies, and accessories intended for purchase. State whether delivery, tax, installation, rough-in changes, blocking, disposal, and finish repairs are included; the retail fixture price rarely covers every dependency.

Does this bathroom estimate include waterproofing?

Only if an entered installed tile rate or trade quote expressly includes the specified waterproofing system and preparation. Tile and grout alone are not the complete water-management assembly. Require compatible products, installation details, drain coordination, penetrations, transitions, and any applicable testing in writing.

How much contingency should a bathroom remodel carry?

Choose contingency from design completeness, building age, investigation, concealed plumbing, moisture risk, access, product decisions, and contract structure. It should cover uncertainty, not known omitted work. Older bathrooms with unopened walls may justify more protection than a fully documented recent assembly.

07

Sources and reference standards

Project workflows

Use this result in a complete project plan

Kitchen and bath planner

Kitchen and bathroom projects concentrate cabinetry, appliances, plumbing, ventilation, electrical work, waterproofing and detailed finishes into small areas. A broad price per square foot can conceal those decisions and double-count shared demolition or trade mobilization. This guide builds a coordinated existing-condition record, room-specific component budgets and one explicit project-level scope using only prices or quotes the visitor enters.

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