Guide
How to Estimate a Remodel From a Floor Plan
Turn a floor plan into a remodel budget: measure the rooms, take off materials, apply unit costs, and add the line items plans don't show.
Updated · FloorFigures
Short answer
Measure each room from the plan, turn the measurements into material quantities (a takeoff), multiply each quantity by your supplier's or contractor's unit price, then add what the plan doesn't show: demolition, disposal, permits and a contingency. The estimate is the sum of those lines.
A floor plan gives you the quantities. The prices have to come from you: your supplier, your contractor, or your own past jobs. This guide doesn't use national cost averages, because prices vary too much by region, product and contractor to belong in a real estimate. The method works for any price list.
- 1
Measure the rooms in scope
Floor area, perimeter and ceiling height for each room the work touches. - 2
Take off the materials
Turn the measurements into boxes, gallons, sheets, linear feet and counts. - 3
Apply unit prices
Multiply each quantity by a price from your supplier or contractor. Keep material and labor on separate lines. - 4
Add what the plan doesn't show
Demolition, disposal, permits, repairs, delivery, tax and a contingency.
Step 1: Measure the rooms in scope
Measure only the rooms the work touches, and for each one record the floor area, the perimeter and the ceiling height. Check the plan's scale against a printed dimension first: a resized PDF throws every number off by the same factor (see how to scale a PDF drawing). Plans are drawn before a house is built, so tape one or two walls on site to confirm.
Step 2: Take off the materials
Turn the measurements into the units you buy: flooring with waste in boxes, paint in gallons, drywall in sheets, baseboard in linear feet, transitions and doors by count. The material takeoff guide has the formulas and a template, and the flooring, paint and drywall calculators do the arithmetic.
Step 3: Apply unit prices
Every line is quantity × unit price. Get the unit prices from real quotes, and keep material and labor apart:
| Line | Unit | Unit price |
|---|---|---|
| Flooring, material | sq ft bought (with waste) | $X per sq ft (your supplier's price) |
| Flooring, installation | sq ft of floor | $X per sq ft (your installer's rate) |
| Paint | gallon | $X per gallon (your supplier's price) |
| Painting, labor | sq ft of wall and ceiling, or per room | Your painter's rate or quote |
| Drywall | sheet | $X per sheet, plus finishing labor |
| Baseboard | linear ft | $X per ft, material and install |
| Transitions, doors, fixtures | each | $X each |
Price the quantity you'll actually buy: whole boxes and whole gallons, not the exact area. Labor is usually priced on the area installed, so it uses the floor area without waste.
Step 4: Add what the floor plan doesn't show
- Demolition and removal: tearing out old flooring, trim or drywall.
- Disposal: a dumpster, haul-away or landfill fees.
- Permits: cosmetic work often needs none; structural, electrical and plumbing work typically does. Check with your local building department.
- Hidden conditions: subfloor repairs, rot, water damage, out-of-level floors, outdated wiring.
- Prep and protection: moving furniture and appliances, floor protection, trimming doors for a thicker floor.
- Delivery and sales tax on materials, where they apply.
- Contingency: a percentage on top, shown as its own line.
Sample estimate: flooring, paint and trim in four rooms
The scope: replace carpet with vinyl plank in a 16' × 14' living room, a 12' × 12' and an 11' × 10' bedroom, and a 10' × 3' 6" hall; paint the walls and ceilings in those rooms; and replace the baseboard. With 8 ft ceilings and the openings counted, the takeoff is:
| Quantity | Math | Result |
|---|---|---|
| Floor area | 224 + 144 + 110 + 35 | 513 sq ft |
| Flooring to buy | 513 × 1.10 = 564.3 sq ft; ÷ 20 sq ft boxes = 28.2 | 29 boxes (580 sq ft) |
| Wall area, less 10 doors and 5 windows | 408 + 312 + 279 + 132 | 1,131 sq ft |
| Paint, walls and ceilings, 2 coats | (1,131 + 513) × 2 ÷ 350 = 9.4 | 10 gallons |
| Baseboard | (177 ft − 10 doors × 3 ft) × 1.10 = 161.7 | 162 linear ft |
Now the prices. Every unit price below is a made-up placeholder to show the arithmetic:
| Line | Quantity | Example price (placeholder) | Line total |
|---|---|---|---|
| Remove carpet and pad | 513 sq ft | $0.50 per sq ft | $256.50 |
| Vinyl plank, material | 580 sq ft | $4.50 per sq ft | $2,610.00 |
| Vinyl plank, installation | 513 sq ft | $2.00 per sq ft | $1,026.00 |
| Paint | 10 gal | $45 per gal | $450.00 |
| Painting, labor | 1,644 sq ft | $1.00 per sq ft | $1,644.00 |
| Baseboard, supplied and installed | 162 ft | $5.00 per ft | $810.00 |
| Transition strips | 2 | $30 each | $60.00 |
| Disposal | 1 load | $150 | $150.00 |
| Permit | None assumed here; check locally | $0.00 | |
| Subtotal | $7,006.50 | ||
| Contingency | 10% of subtotal | $700.65 | |
| Total | $7,707.15 |
Why not use a national cost per square foot?
A cost per square foot is an output, not an input. It hides the scope (paint only, or new floors and trim too), the product grade, the condition of the house and local labor rates. Two jobs with the same floor area can differ widely in cost. Build from quantities and real prices, then divide by the floor area if you want a per-square-foot number to compare bids for the same scope.
Doing it in FloorFigures
FloorFigures handles steps 1 and 2 from the plan, free and in your browser. Press A to find every room, set ceiling heights and openings, and the Takeoff tab gives each room's floor area, perimeter, wall and ceiling area, flooring boxes, paint gallons, drywall sheets and baseboard. Its price list takes your prices for flooring (per sq ft), paint (per gallon), drywall (per sheet) and baseboard (per foot) and shows a cost per room. Export the CSV to a spreadsheet to add labor, demolition, permits and contingency. More for remodelers and estimators on FloorFigures for contractors.
Questions
- How do I estimate remodel costs from a floor plan?
- Measure the rooms in scope from the plan, turn the measurements into material quantities (square feet of flooring, gallons of paint, sheets of drywall, linear feet of trim), multiply each quantity by a unit price from your supplier or contractor, then add demolition, disposal, permits and a contingency. The total is the sum of those lines.
- Can I use a cost per square foot to estimate a remodel?
- Only as a rough check. Cost per square foot is a result of the line items, not an input: it changes with the scope, the products, the house and local labor rates. Build the estimate from quantities and real prices, then divide by the floor area if you want a per-square-foot figure to compare bids for the same scope.
- What does a floor plan not show for a remodel estimate?
- Demolition and removal of old materials, disposal, permits, subfloor or framing repairs, damage hidden behind walls and under floors, moving furniture and appliances, trimming doors for a thicker floor, delivery and sales tax. Add each as its own line, and carry a contingency for what you can't see.
- How much contingency should I add to a remodel estimate?
- Pick a percentage that matches how much is unknown, and show it as its own line. The example on this page uses 10%. Jobs that open walls or floors, and older houses, carry more risk, so contingencies are commonly set higher for them.
- Do I need a permit for a remodel?
- It depends on the work and where you live. Cosmetic work like paint and flooring often needs none, while structural, electrical, plumbing and some window changes typically do. Check with your local building department before you price the job, and include permit fees as a line in the estimate.