To estimate a renovation, add up area work (square feet × cost per square foot), priced items (count × cost each) and labor (hours × hourly rate), then add a contingency buffer. For context, U.S. homeowners spent a median of $5,000 on a bathroom remodel and $8,000 on a kitchen remodel in the Census Bureau's 2023 American Housing Survey, though both include DIY and partial jobs.
This calculator is for homeowners comparing quotes, landlords and flippers budgeting a rehab, and DIYers pricing materials. It has no built-in prices: you enter numbers from your own quotes, supplier price lists or store receipts, and it does the arithmetic, shows where the money goes and gives you a link to save the estimate.
How to use this calculator
- Pick the project type. For bathrooms, kitchens, flooring, lighting, plumbing fixtures and doors or windows, the result shows the Census median for comparison.
- Enter the area and the installed cost per square foot for work priced by area: tile, flooring, drywall, painting.
- Enter the number of priced items and the cost of each: vanity, toilet, light fixtures, appliances, doors.
- Enter labor that is quoted by the hour, and the hourly rate.
- Set a contingency buffer for surprises.
- Copy the link to save or share the estimate.
How it's calculated
area work = area × cost per sq ftitems = number of items × cost per itemlabor = hours × hourly rateestimate = (area work + items + labor) × (1 + contingency % ÷ 100)
Any field you leave blank counts as zero, so you can price a job with only one or two of the three parts. If a contractor quotes a single lump sum, enter it as one item at that price and use the contingency field to see what a buffer adds.
Worked examples
The prices below are made-up inputs to show how the math works. They are not market prices.
Small bathroom remodel
40 sq ft of floor and wall tile at $30 per sq ft installed = $1,200. Add 4 items (vanity, toilet, tub, faucet) averaging $900 each = $3,600, and 40 hours of plumbing and carpentry at $85 = $3,400. With a 15% buffer for an older house: $9,430.
Flooring for two rooms
250 sq ft of flooring quoted at $7 per sq ft installed = $1,750. With a 10% buffer: $1,925. Compare that with the $3,000 Census median for flooring, paneling and ceiling tile projects. To work out the square footage and boxes, use the flooring calculator.
Lighting renovation
8 fixtures at $60 each = $480, and an electrician quotes 10 hours at $95 an hour = $950. With 10% contingency: $1,573.
Kitchen with a per-square-foot quote
A contractor quotes $40 per sq ft for a 200 sq ft kitchen ($8,000), and you buy 4 appliances at $1,200 each ($4,800). With 10%: $14,080.
What U.S. homeowners actually spend (Census AHS 2023)
The 2023 American Housing Survey, run by the Census Bureau for HUD, asked owners about home improvement projects in the previous two years. These are medians: half of projects cost less and half cost more. They include DIY work and small jobs, so they sit well below the price of a full professional remodel.
| Project type | Median spent |
|---|---|
| Roofing | $10,000 |
| Kitchen remodels | $8,000 |
| HVAC | $5,500 |
| Bathroom remodels | $5,000 |
| Porch/deck/patio/terrace | $4,800 |
| Flooring/paneling/ceiling tiles | $3,000 |
| Doors/windows | $2,800 |
| Electrical wiring/fuse boxes | $1,000 |
| Plumbing fixtures | $500 |
Average bathroom and kitchen remodel spending
The same survey counted 7.5 million bathroom remodels totaling $68.9 billion and 5.0 million kitchen remodels totaling $83.1 billion. Dividing total spending by the number of projects gives the mean:
| Project | Projects | Total spent | Average per project | Median per project |
|---|---|---|---|---|
| Bathroom remodels | 7.5 million | $68.9 billion | $9,187 | $5,000 |
| Kitchen remodels | 5.0 million | $83.1 billion | $16,620 | $8,000 |
In both cases the average is well above the median. A large number of modest jobs sit at the bottom, and a smaller number of full remodels pull the average up. If you are replacing everything down to the studs, your project belongs in that upper group.
Getting quotes you can compare
- Write down the scope first. List what stays, what goes and what is new, and give every contractor the same list.
- Ask for line items. Area work, fixtures and labor map directly onto the calculator's fields and make differences between quotes visible.
- Check what is excluded. Permits, debris removal, patching and painting after electrical work are common gaps.
- Separate owner-supplied items. If you buy the fixtures yourself, enter them as items and make sure the contractor's quote doesn't include them too.
What affects the result
- Scope creep. Moving a toilet or shower drain, or taking down a wall, adds plumbing, framing and finishing work.
- Age and condition. Rot under a tub, old wiring or asbestos can add a lot, and you won't know until the walls are open.
- Finish choices. Tile, counters, cabinets and fixtures span a wide price range for the same room.
- DIY share. Doing demolition, painting or tiling yourself cuts labor but not materials.
Does a renovation pay back at sale?
Rarely in full. The 2025 Remodeling Impact Report from the National Association of REALTORS® and NARI estimated that a bathroom renovation recovers 50% of its cost at sale and a complete kitchen renovation 60%. Renovate for your own use, and treat resale value as a partial offset.
Common mistakes
- Comparing a quote with the Census median. A $5,000 median does not mean a full bath remodel costs $5,000.
- Counting items twice. If the per-square-foot price already includes materials, don't add the same tile as an item.
- Skipping the contingency. Leaving no buffer leaves you short when surprises show up behind the walls.
- Forgetting related work. New lighting may need a new circuit; check wire and breaker sizing with the wire size calculator.
When not to use this calculator
Don't use it as a bid or for financing decisions. It can't see your house. Get written quotes for the same scope, and check permit requirements with your local building department.
Measuring materials? Use the paint calculator for gallons, the flooring calculator for boxes and the linear feet calculator for trim and baseboard. For hauling debris or ordering fill, the cubic feet calculator gives cubic yards. Larger exterior jobs have their own tools: the roof replacement cost calculator and the siding calculator.
Planning a renovation for resale? Carry the rehab estimate into the house flipping calculator to include purchase, holding, borrowing and selling expenses. For a rental, the rental cash flow calculator separates routine maintenance and future replacement reserves from debt payments.
Frequently asked questions
How much does a bathroom renovation cost?
It depends almost entirely on scope. The Census Bureau's 2023 American Housing Survey found a median of $5,000 spent per bathroom remodel. Dividing its $68.9 billion total by 7.5 million projects gives an average of about $9,187. Both include DIY work and partial jobs, so a full professional remodel usually costs more. Price your own scope in the calculator.
How much does a kitchen remodel cost?
The 2023 AHS median spent on a kitchen remodel was $8,000, and the average (total spending ÷ projects) was about $16,620. A full gut with new cabinets, counters and appliances sits well above both, so build your estimate from quotes.
How much does a lighting renovation cost?
There is no reliable national average for lighting jobs, so the calculator uses your numbers: fixtures × price per fixture plus electrician hours × hourly rate. For example, 8 fixtures at $60 and 10 hours at $95 with a 10% buffer comes to $1,573. The AHS median for electrical wiring and fuse box work was $1,000, which is a different job.
Why doesn't the calculator include average prices?
Published contractor-cost benchmarks are licensed data and can't be built into a calculator, and local prices vary too much for one national number to be useful. The calculator multiplies out your own quotes and shows the Census median for context.
How do I turn a contractor quote into the calculator's inputs?
Ask for an itemized quote. Put per-square-foot items (tile, flooring, drywall, paint) in area × cost per sq ft, priced items (vanity, toilet, fixtures, appliances) in items × cost per item, and hourly work in labor hours × hourly rate. If the quote is one lump sum, enter it as 1 item.
How much contingency should I add to a renovation budget?
The calculator defaults to 10%, which is our assumption, not a published standard. Older houses, moving plumbing or walls, and hidden water damage justify a larger buffer; a like-for-like cosmetic update can use less.
Does a bathroom remodel pay for itself when I sell?
Usually not in full. The NAR and NARI 2025 Remodeling Impact Report estimated that a bathroom renovation recovers 50% of its cost at sale and a complete kitchen renovation 60%.
Why is the Census median so much lower than contractor quotes?
The AHS median covers every project owners reported over two years, including DIY work and small jobs like a new vanity. The Census found that 36% of all home improvement projects were done by the owners themselves.
Is the median or the average a better guide?
Neither is a quote, but the gap tells you something. For bathrooms the average ($9,187) is well above the median ($5,000) because a minority of large jobs pulls the average up. If you are planning a full remodel, expect to be in that upper group.
Are these numbers current for 2026?
The 2023 American Housing Survey is the latest edition with home improvement spending. Prices have changed since, which is one more reason the calculator relies on your current quotes.
Sources & method
- U.S. Census Bureau & HUD, 2023 American Housing Survey — Home Improvements infographic
- National Association of REALTORS® & NARI, 2025 Remodeling Impact Report
Results are estimates for general information. Found an error? It helps everyone — see our methodology.