How to quote a painting job

First, get the words straight, because they change what you're promising. An estimate is a ballpark — "probably around $3,200." A quote is a firm price you'll stand behind. A contract is that price plus scope and terms, signed. This guide is about the middle one: a number you commit to, built from real measurements instead of a squint at the ceiling.

Why it matters: the painter who guesses either pads the number to be safe (and loses the job) or shaves it to win (and eats the loss on prep they forgot). A method fixes both.

Step 1 — Walk the job and measure everything

Bring a tape or a laser and walk every room in scope. For each room, write down length, width, and ceiling height. Count windows and doors — you'll deduct those. Note ceilings, trim, and closets in or out of scope.

While you're standing there, look at the surfaces. Nail pops, tape seams, water stains, glossy oil-based trim that needs scuffing and priming, dark walls going light — every one of those is hours. Write them down now. Prep you notice in the driveway is prep you get paid for; prep you notice on day two is prep you eat.

Step 2 — Figure the paint

Wall area for a room is the perimeter times the height: 2 × (length + width) × height. Knock off roughly 15 square feet per window and 20 per door. Most interior paints are rated around 350–400 square feet per gallon per coat — it's the number printed on the can — with premium lines like Sherwin-Williams Emerald and Benjamin Moore Aura at the top of that band. Using 350 as your divisor keeps the math conservative. Plan on two coats unless you have a very good reason not to.

Ceilings are length × width, usually one coat. Primer covers less — plan around 200–300 square feet per gallon — and dark-to-light or stain-blocking jobs need it. If you'd rather not do this arithmetic on a clipboard, our free painting estimator does the sqft and gallon math from room dimensions, and the printable repaint pricing cheat sheet keeps the formulas in the truck.

Step 3 — Price the materials

Use your real numbers, not the shelf price. Retail on quality interior paint runs roughly $40–90 a gallon in 2026 depending on the line, and your contractor account pricing should come in under retail — how far under depends on your volume and your store. Total the gallons across all rooms first, then think in cans: five-gallon buckets are cheaper per gallon than five singles, so pack the big number into fives and buy ones for the remainder.

Then the stuff that isn't paint: tape, plastic, drop cloths, caulk, spackle, sandpaper, roller covers. It's easy to hand-wave this at zero because each item is cheap. Across a whole-house job it isn't. Keep a standard sundries list with prices and add it to every quote.

Step 4 — Price the labor

Labor is the biggest line on the quote and the easiest to underprice. Work from a day rate: what a painter on your crew costs you for a full day, times how many crew-days the job takes. For reference, U.S. professional painters bill somewhere around $330–600 per painter per day in 2026 — but your rate should come from your costs and your market, not a national average.

Estimating the days is where experience lives, and no published number replaces your own. The method: track actual hours against wall footage on your next three jobs — rolling open walls, cutting-in, trim, and prep all run at very different speeds — and you'll have production rates that are true for your crew. Those three jobs of notes are worth more than any industry table.

Step 5 — Add overhead, then margin

Paint plus labor is your cost, not your price. Two more numbers turn cost into a business:

• Overhead — insurance, the truck, fuel, phone, software, the hour you spent quoting. Spread it as a percentage on every job; many small crews land somewhere around 10–15%.
• Margin — actual profit. If you skip it, you've built yourself a job, not a company. 15–25% is a common range for small residential crews.

Step 6 — Send it the same day

Angi's data puts labor at 75–85% of what a homeowner pays for interior painting — which means what they're really buying is you, and the quote is their first look at how you work. A clean, itemized PDF with scope by area, a firm total, and payment terms — delivered while they're still thinking about the project — wins against a better price that shows up on Thursday. Most homeowners collect two or three numbers. The first professional one anchors the rest.

The mistakes that eat quotes

• Prep amnesia. The walls needed washing, the trim needed sanding, nobody quoted it. Walk-through notes fix this.
• No exclusions. If moving furniture, wall repairs, or lead-safe work aren't in scope, the quote has to say so — otherwise you own them.
• Copying last month's number. Paint prices move. Quote from a current price list, not memory.
• Slow delivery. A perfect quote on Thursday loses to a good quote on Tuesday.

Related reading: how to price interior painting for the per-sqft and per-room numbers, and the free painting estimate template if you want the paper version of all this.