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Measure every surface: wall area from perimeter times height, ceilings by floor area, trim by linear foot, doors and windows by count. Multiply by the number of coats. Divide by your crew's timed production rate to get hours, and by the paint's spread rate to get gallons. Add prep and setup time, price labor at your loaded hourly cost plus overhead, then apply a margin and check the total against your minimum.
Key takeaways
- Price painting from square feet of surface times coats, never from a flat number per room.
- Your production rate comes from timing your own crew, not from a chart.
- Prep, masking and setup are separate line items. On some jobs they take as long as the paint.
- Gallons come from the spread rate on the product data sheet, rounded up to whole containers.
- Homes built before 1978 can trigger the EPA lead rule, which adds certified labor, containment and cleanup to the cost.
A painting estimate is a measuring job before it is a pricing job. Two rooms with the same floor size can take very different hours: one has nine-foot ceilings, four windows, a closet and crown molding, the other is a plain box with one door. If you price per room, you will win the plain boxes at a fair rate and lose money on every room with character. This guide shows how to turn a walk-through into surface quantities, quantities into hours and gallons, and hours into a price. The general cost math behind any trade is in the guide to pricing service jobs. Everything below adapts it to walls, trim and coats.
What units drive a painting price?
Painting has four units, and a good estimate keeps them separate because each moves at a different speed:
- Wall area in square feet. Room perimeter times wall height. Subtract large openings like picture windows, patio doors and archways. Leave small windows and doors in, because cutting around them costs about as much time as painting the wall they replaced.
- Ceiling area in square feet. Length times width of the room. Ceilings are usually slower per foot than walls (overhead rolling, more drips to protect against), so give them their own rate.
- Trim in linear feet. Baseboard, casing, crown, chair rail. Measure the run and note the profile; a flat baseboard and a detailed crown are different jobs.
- Doors, windows and units by count. A six-panel door, a set of shutters, a stair spindle. Count them and price each.
Exterior work uses the same idea with different inputs: siding area from wall length times height (gable triangles are half of base times height), fascia and soffit by linear foot, and a story multiplier for anything that needs a tall ladder, staging or a lift. A second story is slower because every move of the ladder takes time and every trip down for paint costs minutes.
Then multiply area by coats. A color change, a stain-blocking primer, or new drywall all add a coat. One coat of the same color on a sound wall is the exception, so price the second coat unless you have tested the coverage on site.
How do you estimate painting hours?
Hours come from a production rate: how many square feet (or linear feet, or doors) one painter finishes per hour, per coat, on that surface. The only trustworthy production rate is your own. For the next ten jobs, write down the measured area and the actual hours for each task: cutting and rolling walls, ceilings, trim, doors, prep. After a few weeks you will have rates that fit your crew, your tools and your standards.
Separate the stages, because they behave differently:
- Setup and protection. Moving furniture, laying drop cloths, masking floors and fixtures, removing switch plates. This is roughly fixed per room, so it hurts most on small jobs.
- Prep. Patching nail holes, sanding, caulking gaps, spot priming, scraping and feathering on exteriors. Prep depends on condition, not area. Rate it on the walk-through (light, moderate, heavy) and price it in hours.
- Application. Area times coats, divided by your production rate. Spraying is faster on open surfaces but adds masking time; count both.
- Cleanup and walk-through. Pulling tape, touch-ups, cleaning tools, putting the room back.
Drying time matters too. If the second coat cannot go on until the afternoon, the crew either moves to another room or sits. A one-room job with a forced wait between coats can need a return trip; price that trip.
How do you figure paint and sundries?
Read the spread rate on the product data sheet for the exact paint you will use. It is printed as square feet per gallon, often as a range, and real coverage drops on rough or porous surfaces. Use the low end for textured walls, bare drywall, rough siding and deep color changes. Gallons needed equal area times coats divided by spread rate, rounded up to the containers you will actually buy.
Sundries are the small things that add up across a job: tape, plastic, caulk, patching compound, sandpaper, roller covers, rags, primer for spots. Track them per job for a month and you will see a steady relationship to job size. Put them on the estimate as their own line rather than hiding them in the paint cost.
When you buy materials for a customer, decide how you apply profit to them. A markup on cost and a margin on price are different numbers: a 25% markup equals a 20% margin. Pick one, write it on your price sheet, and use it the same way on every quote. The job price calculator converts a target margin into the equivalent markup.
Worked example: one bedroom repaint
This is a made-up job with made-up rates to show the arithmetic. None of these figures is a market price or a recommendation. Swap in your own measurements, your timed rates and your costs.
The hypothetical room is 12 by 14 feet with 8-foot walls, a 3-foot entry door, a 5-foot-wide closet opening that runs floor to ceiling, two coats on walls in a new color, one coat on baseboard, and no ceiling. The owner paints with one helper.
| Line (all hypothetical) | Figure | Arithmetic |
|---|---|---|
| Perimeter | 52 ft | (12 + 14) × 2 |
| Gross wall area | 416 sq ft | 52 × 8 |
| Less the closet opening (the small door stays in) | 376 sq ft | 416 − (5 × 8) |
| Area to cover, two coats | 752 sq ft | 376 × 2 |
| Paint needed at 350 sq ft per gallon | 3 gallons | 752 ÷ 350 = 2.15, rounded up to whole gallons |
| Wall hours at 150 sq ft per hour | 5.0 hrs | 752 ÷ 150 = 5.01 |
| Baseboard, perimeter less the closet and door openings | 44 linear ft | 52 − 5 − 3 |
| Baseboard hours at 40 linear ft per hour | 1.1 hrs | 44 ÷ 40 |
| Setup, light prep and cleanup | 2.7 hrs | Estimated on the walk-through |
| Total labor hours | 8.8 hrs | 5.0 + 1.1 + 2.7 |
| Labor at $38 per hour, burden included | $334.40 | 8.8 × $38 |
| Overhead at $16 per labor hour | $140.80 | 8.8 × $16 |
| Paint at $45 per gallon, plus $30 sundries | $165.00 | (3 × $45) + $30 |
| Total cost | $640.20 | $334.40 + $140.80 + $165.00 |
| Price at a 25% margin | $853.60 | $640.20 ÷ (1 − 0.25) |
Look at where the hours went. The two coats of wall paint took 5 hours, but setup, prep and baseboard together took 3.8. That is why per-room pricing fails: setup and cleanup are roughly fixed per room, trim follows the perimeter and its openings, and wall hours scale with wall area and coats. If the same customer adds a second room on the same day, setup is partly shared and the per-room price for the second room can come down without hurting margin.
What changes in older homes?
Under the EPA Renovation, Repair and Painting rule, firms performing renovation, repair and painting projects that disturb lead-based paint in homes, child care facilities and kindergartens built before 1978 must be EPA- or state-certified and must use certified renovators who follow specific work practices. EPA's contractor page names painters among the covered trades and says the certification requirement includes sole proprietorships. Paint testing is not required, but unless you have documentation that the paint is not lead-based, the rule applies.
For pricing, the rule changes the job. EPA's work practices page lists distributing EPA's Renovate Right pamphlet before work starts, containing the work area so dust and debris stay inside it, no open-flame burning or power tools without HEPA exhaust control, a thorough cleanup followed by a verification procedure, and job records kept for three years. Each of those is hours or supplies. Very small jobs can fall outside the rule (EPA lists minor repair and maintenance that disturbs six square feet or less of paint per room inside, or 20 square feet or less outside; window replacement, demolition of painted surfaces and the prohibited practices above are covered at any size), but ordinary repaint prep often goes past that. Ask the year built on every inquiry and price covered jobs as a separate job type with their own containment, cleanup and paperwork lines. If you are not certified, refer the work out. Treat this as a summary, not legal advice, and check the current rule with EPA or your state program. Our guide to starting a painting business covers certification.
Minimums, touch-ups and warranty costs
Every painting job has a trip, a setup and a cleanup no matter how small. A single accent wall or a front door can take half a day once you count drive time, masking, two coats with a dry time between them, and putting things back. Set a minimum that covers a realistic half day, publish it, and quote small jobs against it.
If you offer a workmanship warranty on peeling or adhesion, it has a cost even when nobody calls. Track your return visits for touch-ups and warranty claims for a season, total the hours and materials, and divide by your jobs. That per-job warranty cost belongs in the price as a line of overhead. Exterior work faces weather and surface conditions that interior work does not, so track its callbacks separately and give it its own figure.
Where painters underprice
- Quoting from floor area. Floor square footage ignores ceiling height, openings and trim. A tall great room has far more wall per foot of floor than a bedroom.
- Assuming one coat. When the second coat turns out to be needed, it costs nearly as much labor as the first, and a customer quoted for one coat rarely wants to pay for two.
- Pricing prep by guess. Exterior scraping on a weathered south wall can take longer than painting it. Rate condition on site and price it in hours.
- Forgetting the color count. Every extra color adds cutting lines, a separate set of rollers or a cleaned sprayer, and touch-up mixing.
- Ignoring furniture and occupancy. A furnished home with people living in it is slower than an empty rental between tenants. Note it and adjust.
- Using a production rate from the internet. Another crew's rate reflects their tools, their standards and their walls. Time yours.
Once you have your own rates, put them in a price sheet: wall rate per square foot per coat, ceiling rate, trim per linear foot, door and window counts, prep levels, story multipliers, minimum. Load the same line items into your quoting software so every estimate is built the same way and every completed job records its actual hours next to the estimate. Comparing estimated and actual hours is how your rates get sharper. A custom CRM can show the estimated and logged hours side by side on each job, the kind of tool we first built for our own service companies.
If you are not sure what your hourly cost is, the hourly rate calculator works it out from the pay you want, your overhead and your billable hours. For how painting companies find their own customers, see our page for painting contractors, and for a related trade that bills many small tasks per visit, read how to price handyman jobs.
Frequently asked questions
Should I price interior painting per room or per square foot?
Measure in square feet and build the price from area, coats, trim and prep. You can still present it to the customer as a price per room once the math is done.
How do I account for ceiling height?
Wall area is perimeter times height, so a taller wall adds area automatically. Add time for the taller ladder or extension pole if your production rate was timed on standard walls.
Should I include paint in the price or let customers buy it?
Many painters supply paint so they control quality and quantities. If a customer supplies it, you lose the materials margin and take on the risk of the wrong product, so price labor accordingly and note who supplied what.
How do I price cabinet painting?
Count doors, drawer fronts and linear feet of face frame, then time each stage: removal, cleaning, sanding, priming, coats and reinstall. Cabinets are a production job with long drying waits, so price the schedule as well as the hours.
Sources
General information for service-business owners, not legal, tax or financial advice. Rules vary by state; check with a qualified professional for your situation.