How to price a painting job

Anyone can quote a paint job in ten seconds: glance at the room, name a number, hope it works out. That is exactly how painters end up finishing a job for less than the paint and the days cost them. The brush work is the easy, visible part. The money is decided long before it - in how carefully you measure, how honestly you judge the prep, and how many coats you actually committed to.

Painting isn't priced by different math from any other trade - it is the same four parts (labor, materials, overhead, and profit) behind every price. What makes painting its own problem is the shape of the work: it is measured by area, done in coats, and front-loaded with prep that takes real hours and shows up nowhere on the finished wall. Get the area, the coats, and the prep right and the rest of the price falls into place. This guide walks through each, then prices a room from bare walls to final quote.

Why painting pricing is its own problem

Two things make a paint job easy to underprice. The first is that the work is measured by area, not by the task. A "small bedroom" and a "small bedroom with a stairwell and 12-foot ceilings" are the same job in a customer's head and wildly different jobs in yours. If you quote from a glance instead of a tape measure, you are guessing at the single number that drives the whole price.

The second, and the bigger killer, is prep. Filling holes, sanding, caulking gaps, taping edges, priming patches and bare spots, moving furniture, and laying drop cloths can eat as many hours as the painting itself - more on a tired old surface. None of it is visible in the finished room, so it is the first thing a hopeful painter leaves out of the quote and the first thing that turns a profitable day into a break-even one. Price painting well and you are really just pricing prep well.

The four parts, painter-style

Every honest price is built from the same four blocks. If you have read how to price a job, this is the same skeleton - here is what each part looks like for a paint job:

1. Labor - your time on the job, prep and painting, at a rate that actually pays you. Prep is labor; count it in full, not as an afterthought.
2. Materials - paint, primer, and the sundries that vanish into every job (tape, filler, caulk, sandpaper, roller sleeves, plastic, drop cloths) - at cost, plus a markup for sourcing and handling them.
3. Overhead - the share of your monthly running costs the job should carry: insurance, vehicle, phone, sprayer and ladders, the lot.
4. Profit - what the business earns after all three above are paid, including paying you. Your wage is a cost; profit sits on top.

Add the first three to get your cost. Add profit to get your price. The two numbers that make this reliable for painting are the ones we measure next: the paintable area and the number of coats.

Step one: measure the paintable area

Everything downstream - hours, paint, price - starts from square footage, so measure it, don't eyeball it. For walls, add up the length of every wall and multiply by the ceiling height. For a ceiling, it is length times width. Add them for the total paintable area.

You can subtract large openings like doors and picture windows, but many painters leave the small ones in on purpose - the cutting-in around a window frame often takes longer than the flat wall it replaces, so the extra area roughly pays for the fiddly edges. What you should never do is skip the tape measure and quote "a room." Two rooms of the same footprint can differ by half again once you account for ceiling height, trim, and the number of corners to cut.

Step two: count the coats (honestly)

Two coats is the standard for a quality finish, and your quote should assume it unless you have a specific reason not to. Then adjust up for the jobs that need it: a big color change, a light color going over a dark one, bare drywall or fresh filler that needs priming first, or a porous surface that drinks the first coat. A dramatic color change can mean a primer coat plus two finish coats - three passes over the same wall, three times the rolling.

Coats matter because they multiply both of your biggest costs at once: more coats is more paint and more hours. Quote two coats when you priced two coats, and if the customer later asks for a colour that will need three, that is a change to the price, not a favour.

Step three: estimate the paint and materials

Once you know the area and the coats, the paint estimate is simple division. Take the paintable area, multiply by the number of coats, and divide by the paint's spread rate. A gallon of interior wall paint commonly covers somewhere around 350–400 square feet per coat - but treat that as a rough planning figure, read the tin for the product you actually use, and expect textured, porous, or bare surfaces to swallow more.

Then add the sundries, because they add up fast: tape, filler, caulk, sandpaper, roller sleeves, brushes, plastic sheeting, and drop cloths. On a small job the sundries can rival the paint. Total your materials at cost, then apply a markup of roughly 15–35% - a common, illustrative band in the trades - to cover the sourcing, the pickup, the cash you front, and the leftovers. And always round your paint order up: stopping mid-wall for a supply run costs you an hour and the customer sees the seam.

Worked example: repainting a bedroom

Let's price a typical interior repaint - one bedroom, walls and ceiling, two coats, in decent condition with normal filling and sanding. We'll use a $40/hr take-home wage, $20/hr overhead, a 25% materials markup, and a 25% profit margin. (Setting those numbers for yourself is its own topic - how much to charge per hour walks through it.)

Say the walls and ceiling come to a paintable area that works out to about ten hours of work once prep is counted - roughly four hours of filling, sanding, caulking, taping, and cutting in, and six hours of rolling two coats. Materials - paint, primer, and sundries - come to $180 at cost.

Illustrative example — figures chosen to show the method, not a quote. How we source figures.

So you quote $1,100. Your $400 wage is paid, your $200 of overhead is covered, your materials come back with a fair markup, and the business clears $275 in profit - a true 25% margin on the price. To get there you divide, not add: cost ÷ (1 − margin), so $825 ÷ 0.75 = $1,100. Multiplying $825 by 1.25 would leave you a hair short of a real margin - the difference that markup vs. margin is all about.

Now look at where this quote could have gone wrong. Leave the four prep hours out - quote "just the painting" - and you would have priced six hours instead of ten, dropping the labor and overhead by $240 and quoting somewhere near $780. You would have done the same work for the same days and simply handed the customer $320. The prep didn't get cheaper because you forgot to charge for it.

Per-room and per-square-foot shortcuts

Experienced painters often quote fast - "about $X a room" or "roughly $Y a square foot" - and that is fine, once you have earned the shortcut. A per-room or per-square-foot figure is only reliable if it came from pricing enough real jobs the proper way that you know what your own number bakes in. The danger is borrowing someone else's rate before you know your own costs: a "$X a room" you saw online assumes their prep, their coats, their ceiling height, and their market, none of which are yours.

Use the shortcut to quote quickly and to sanity-check, but keep the real math underneath. When a job is unusual - heavy prep, high ceilings, a difficult color change - drop the shortcut and price it from the hours, because that is exactly the job the flat per-room number gets wrong.

Small jobs and the setup floor

A single accent wall sounds like easy money and often isn't. That one wall still costs you the drive, the setup, the taping and drop cloths, cutting in the edges, the cleanup, and a trip to buy a quart of paint - almost everything a bigger job costs, minus the rolling. Price it "properly" off the tiny area and you can lose money before you open the tin.

Handle it the way any solo trade handles small work: set a minimum job price that covers turning up and setting up, and hold it. Better still, bundle - "while the drop cloths are down, I can do the ceiling and the hallway too." The setup gets shared across more work, the customer gets more done in one visit, and the small job stops being a loss leader.

A note on exterior work

Everything above applies outside too, but exterior painting carries costs interior work does not, and matching an interior rate outdoors is a fast way to lose money. Exterior jobs mean far more prep - scraping, sanding, power washing, and priming weathered or bare surfaces - plus working at height with ladders or staging, weather that can stop you for days at a time, and tougher, pricier paint built to survive the sun and rain. All of that is more hours, more materials, and more risk. Price the prep and the access on their own terms; the square footage is only where the estimate starts.

Price the next job in seconds

TradeReady runs this exact math for you. Enter your labor hours, paint and sundries, markup, overhead, and margin, and it stacks up your cost, applies your margin as a true margin, and shows the price - with a break-even figure and a low-to-high range so you can see your room before a discount starts costing you. Set a minimum job price once and it flags any quote that dips below it.

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How painters underprice (and how to stop)

• Forgetting the prep. The number-one leak. Filling, sanding, caulking, taping, and priming are labor. Walk the job, judge the condition, and put the prep hours in the quote every time.
• Quoting from a glance, not a tape measure. The whole price rides on the area. Measure the walls, ceilings, and trim rather than eyeballing "a room."
• Assuming one coat, quoting one coat, painting two. Two coats is standard, and a color change can need three. Price the coats you will actually apply.
• Under-buying paint and sundries. A mid-job supply run is an hour gone and a visible seam. Round up, and don't forget tape, filler, and drop cloths add up.
• No minimum for small jobs. One accent wall still costs a full setup. Set a floor or bundle small jobs together so the setup is shared.

The bottom line

Painting comes down to three numbers the rest follows from: the paintable area, the number of coats, and the prep hours. Measure the first, decide the second honestly, and never leave out the third, and every paint job builds up from real hours and real materials instead of a number you named at the door. Do that, quote flat when you can and hourly when the job is a mystery, and the days you spend painting finally pay what they should.