How the calculator works
The estimate starts with a cost-per-square-foot model by remodel scope, then adds fixture, tile, vanity, shower, waterproofing, plumbing, electrical, demolition, permit, design, and contingency allowances.
Build a bathroom renovation estimate
Use this calculator as a planning model for comparing bids. It estimates materials, fixtures, trade labor, demolition, waterproofing, permits, design allowance, and contingency. A licensed local contractor should verify site conditions, code requirements, and final scope.
Bathroom size0 sq ft
Finish levelMid-range
Expected cost$0
Room and scope
Start with the room type, square footage, remodel depth, and local labor market.
Fixtures and surfaces
Showers, tile, vanity length, toilet, tub, and specialty upgrades change the material and labor budget quickly.
Trades, permits, and buffer
Use allowances for plumbing relocation, electrical changes, waterproofing, permit fees, design work, and unknowns.
Expected budget
$0
Includes contingency.
Planning range
$0 - $0
Low to high quote band.
Cost per sq ft
$0
Expected cost divided by room area.
Risk buffer
$0
Contingency included in expected budget.
Quote checklist
Load or adjust the calculator to create a contractor-ready checklist.
When quotes run higher
Costs rise when walls move, plumbing fixtures relocate, old tile is difficult to remove, subfloor damage appears, waterproofing is complex, custom glass is needed, or the project is in a high-cost labor market.
Planning estimate only
This tool is not a contractor bid, code review, permit ruling, design service, or structural assessment. Use it to compare scope assumptions before asking licensed local pros for final pricing.
Small bathroom refresh
- Cosmetic paint, fixtures, and vanity changes.
- Low demolition and limited trade work.
- Often the fastest scope to quote.
Standard full bath remodel
- New vanity, toilet, flooring, tile, shower or tub updates.
- Typical permits, waterproofing, and electrician/plumber visits.
- Good fit for the mid-range sample.
Primary bath or layout change
- Higher finish levels and larger tile area.
- Possible fixture relocation and custom shower glass.
- Needs a stronger contingency buffer.
Formula summary
Expected cost = scope base + finish-adjusted fixture package + tile + vanity + shower/tub package + plumbing + electrical + demolition + waterproofing + permit + design allowance + contingency. The low and high range applies quote variability around the expected cost based on remodel complexity.
Related estimate tools
How much does a bathroom remodel cost?
Bathroom remodel cost depends on room size, scope, finish level, labor market, shower or tub work, tile area, vanity, plumbing, electrical, permits, demolition, and contingency. A cosmetic refresh can be far lower than a full gut remodel or layout change.
What is the most expensive part of a bathroom remodel?
Custom tile showers, fixture relocation, waterproofing, plumbing changes, electrical work, and high-end finishes often drive the largest cost increases. Hidden subfloor or wall damage can also raise the final quote.
Does this include labor and materials?
Yes. The calculator models both labor and materials as planning allowances. It separates major categories so you can compare a contractor quote against the same scope assumptions.
Should I include a contingency?
Yes. Older homes, full gut remodels, layout changes, and custom showers should carry a larger contingency because hidden water damage, framing, plumbing, and electrical issues may appear after demolition.
Can I use this for a powder room?
Yes. Choose powder room or half bath, lower the square footage, set shower or tub work to none, and use the fixture count, vanity, flooring, and finish settings to model the smaller scope.
Is this a contractor quote?
No. This is a budgeting calculator for planning and quote comparison. A licensed local contractor should inspect the room, confirm permits and code requirements, and provide the final written bid.