DIY Cost Tools
Bathroom Remodel Cost Calculator
Build a flexible bathroom remodeling budget from room size, finishes, fixtures, trade work, labor, permits, disposal, and contingency. Replace the defaults with local quotes.
Measure: Measure the floor length and width, then gather allowances or quotes for each major part of the remodel.
How the estimate works: The calculator uses your measurements, unit conversions, waste allowance, and product coverage to create a planning quantity. Review the formula shown above, then read the matching guide below before ordering. See How Our Calculators Work for assumptions and limitations.
Recommended bathroom-remodel planning tools
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases.
These practical options match the work estimated by this calculator. Verify compatibility, specifications, and the current price before purchasing.
Bathrooms involve water, electricity, ventilation, and code requirements. Use licensed trades where required. Read our advertising disclosure.
How this calculator works
Base budget = floor finishes + wall finishes + fixtures + trade work + labor + permits and disposal. Contingency is added to the subtotal.
Use local allowances and quotes
Bathrooms vary widely because labor rates, fixture quality, waterproofing, layout changes, and hidden damage differ. Replace every default with local information and keep separate allowances for items you have not selected.
Why contingency matters
Demolition can reveal subfloor damage, outdated wiring, plumbing repairs, or moisture problems. A contingency is not extra spending money; it protects the project budget from legitimate surprises.
Read the complete bathroom remodel budget guide: costs, allowances, and contingency.
Build a bathroom budget that can handle surprises
Price the project by category instead of relying on one cost-per-square-foot figure. Separate demolition, plumbing, electrical, waterproofing, tile, fixtures, cabinetry, ventilation, permits, labor, and disposal. For example, a $20,000 subtotal with a 15% contingency becomes a $23,000 planning budget. The contingency is not an upgrade allowance; it is protection against concealed water damage, outdated wiring, subfloor repairs, or other conditions that cannot be confirmed before demolition.
Check the scope before entering costs
Write down which fixtures stay in their current locations and which walls, drains, supply lines, or circuits will move. Moving plumbing and changing the room layout can alter labor and permit costs far more than changing the room’s floor area. Compare allowances against actual products, include sales tax and delivery, and keep contractor bids separate from owner-purchased materials so nothing is counted twice.