Bathroom renovation costs in an instant

Upload bathroom drawings and AI calculates renovation costs for you. No guesswork — an accurate breakdown of materials and labor.

How it works

1. Upload bathroom drawings

A floor plan, cross-section or photo is enough.

2. AI calculates materials and labor

Tiling, waterproofing, fixtures — all accounted for.

3. Get an accurate cost estimate

An itemized estimate with materials and labor.

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What drives bathroom renovation cost?

Bathroom renovation cost varies widely — from $5,000 to over $30,000. The factors below determine where your project lands.

Bathroom size

Cost per square foot drops as the bathroom gets larger because some costs are fixed (drains, vent stacks, fixtures). A small 30 sq ft bathroom can run $250–$400 per sq ft as a full remodel, while a 90 sq ft bathroom typically lands $200–$300 per sq ft. Figures cover labor, materials, plumbing and waterproofing at mid-range finish.

Demolition

Tearing out old surfaces and structures accounts for 15–25% of total cost. If existing waterproofing and substrate are sound, you can save on demo. Asbestos abatement requires a licensed specialist and adds significant cost.

Waterproofing

Code-compliant shower waterproofing — waterproof walls/floors and waterproof joints — runs $4–$8 per square foot installed (full membrane systems like Schluter-Kerdi or RedGard are industry best practice). Inspect before tile goes in. A poorly installed membrane can cause water damage that insurers typically treat as a workmanship exclusion.

Tile selection

Builder-grade ceramic tile (typically 12x12) runs $2–$5/sqft material, mid-range $4–$10/sqft, and premium $10–$30+/sqft. Installed cost is usually 2–3× material. Large-format tile (24x24) is cheap as material but more expensive to install. Mosaic tile has the highest install labor (many small pieces).

Fixtures and finishes

Standard fixtures (shower, toilet, vanity, mirror) run $1,500–$3,500. Premium fixtures (rain shower, smart toilet, custom vanity) $4,000–$12,000. Electric radiant heated floors typically cost $800–$3,000 installed for a bathroom (mat, thermostat, electrical hookup).

Plumbing work

Replacing supply and drain lines significantly raises cost. A surface-only renovation (no plumbing changes) is 30–40% cheaper. Major repipes are usually done as part of a building-wide project.

Typical bathroom renovation budgets

Three example budgets for different renovation tiers at 2026 pricing.

Budget refresh

$5,000–$9,000

Typical size: 40–55 sq ft

Builder-grade tile, standard waterproofing, basic fixtures. Surface-only refresh without replumbing. Good fit when structure is sound and you just want new finishes.

Mid-range renovation

$10,000–$20,000

Typical size: 55–75 sq ft

All surfaces redone, new waterproofing, new fixtures, possibly heated floors. The most common bathroom renovation — plumbing changes as needed.

Premium renovation

$20,000–$35,000+

Typical size: 65–110 sq ft

Large-format or designer tile, premium fixtures (rain shower, custom vanity), full repipe, heated floors, possibly bathroom expansion.

An accurate estimate comes from drawings — not guesswork. AI calculates materials and labor automatically.

Frequently Asked Questions About Bathroom Renovation Costs

How much does a bathroom renovation cost on average in 2026?
A typical 50 sq ft bathroom renovation runs $10,000–$22,000 in the US, depending on finishes, fixtures, and plumbing changes. The most expensive line is usually tile + waterproofing ($3,000–$7,000), followed by plumbing work ($2,500–$5,500) and fixtures ($1,800–$5,000). Massoi calculates an exact estimate from your specific floor plan.
How long does a bathroom renovation take?
A typical bathroom renovation takes 2–4 weeks for a surface remodel and 4–6 weeks for a full gut renovation with plumbing changes. Time is consumed by demo (1–3 days), waterproofing cure time (3–7 days), and tile work (5–10 days), plus plumbing and fixture installation. Plan for longer if the layout changes or if water damage is discovered.
Do I need a building permit for a bathroom renovation?
A typical bathroom renovation like replacing tile usually doesn't need a major building permit, but plumbing and electrical work require licensed installers and may need local permits depending on jurisdiction. If the layout changes or load-bearing structures are opened, a permit is required. Waterproofing work must always be documented.
What should the bathroom blueprints include?
Enough information for an accurate estimate: a dimensioned floor plan (at least length, width, height), fixture locations (toilet, shower, sink, vanity), tile information (size and layout), and any plumbing changes. Massoi can estimate from a floor plan or photo alone, but more detail produces a more precise estimate.
How are bathroom renovation costs broken down?
Costs typically break down as: tile + waterproofing 35–45%, plumbing 20–30%, electrical 5–10%, fixtures 15–25%, demo and disposal 5–10%. Materials are about 40% and labor about 60%. Massoi's tiling bid estimation gives exact quantities from blueprints, and fixture lists are itemized.
Can I DIY a bathroom renovation?
Demolition is doable as a DIY job, but waterproofing, tile, and plumbing usually belong with professionals. A waterproofing failure can cause tens of thousands in damage — and insurers commonly deny claims that fall under workmanship or gradual-leak exclusions, regardless of who did the work. Licensed contractors also carry warranty obligations.

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