How much should a painter charge per room?

Skip flat per-room folklore. Price = (your labor hours × your loaded rate) + materials + prep lines, marked up to your target margin. A typical 12x12 bedroom, walls only, two coats, light prep runs a few hundred dollars in most markets — but your rates and overhead set your number.

How long does it take to paint a 12x12 room?

A working painter cutting and rolling 150–200 sq ft per hour covers a 12x12 room's ~380 sq ft of wall in roughly 2 hours per coat, plus setup, prep, and cleanup — commonly 5 to 7 labor hours for walls-only, two coats, light prep.

Should I charge by square foot or by the hour?

Quote a fixed price, built from square footage and your production rates. Customers want certainty; hourly billing punishes your speed. Fixed pricing from real rates keeps your efficiency as profit.

What do painters forget to include in room prices?

Overhead and prep. Insurance, the van, fuel, and unbillable time must be recovered by every job, and prep beyond nail holes deserves its own line. Both are why the price is more than paint-plus-wage.

Field guide

How Much to Charge for Painting a Room — the Method, Not a Magic Number

Every painter has been asked "what do you charge for a room?" The honest answer is a method, because a 12x12 bedroom with sound walls and an empty floor is a different job from the same room with furniture, a popcorn ceiling patch, and glossy oil trim. Here's the method, with a worked example you can adapt to your numbers.

The formula

Price = (labor hours × loaded hourly cost) + materials + prep lines, then ÷ (1 − target margin). Loaded cost means wage plus taxes, insurance, and overhead share — what an hour actually costs your business, not what you'd like to earn. If you've never computed it, the free margin calculator makes the last step honest.

Worked example: 12x12 bedroom, walls only

Surface: perimeter 48 ft × 8 ft ceiling = 384 sq ft, minus a door and window ≈ 350 sq ft net.
Labor: at 175 sq ft/hour cut-and-roll, two coats = 4 hours, plus 1.5 hours setup, light prep, and cleanup = 5.5 hours. At a $50/hr loaded cost → $275.
Materials: 2 gallons mid-grade at $45 + sundries ≈ $105.
Direct cost: $380. At a 35% target margin: 380 ÷ 0.65 ≈ $585.

Change any input — your speed, your paint, heavy patching, a ceiling — and the number moves. That's the point: the method survives every room; a flat number doesn't.

Where room pricing goes wrong

Borrowed production rates. The internet's 150–350 sq ft/hour range is a spread of different businesses. Time yourself for a week; your rate is the only one that prices your jobs.

Prep as a shrug. "A little patching" priced at zero is margin donated. Separate lines for patching, caulk, stain-sealing, and deglossing keep the price defensible and set up the change order when the wallpaper surprise appears.

Margin math done backwards. Cost × 1.35 is not a 35% margin — it's 26%. Divide by (1 − margin) instead; on the room above the difference is about $70. Every room, every year.

Do the math once, then let it repeat

This method is exactly what FieldSquire automates: speak the room at the walkthrough, get drafted lines, correct rates once — they're saved as your private prices — and the margin math is applied automatically, invisibly to the customer. The painting estimating app is free for 14 days; take it into one bedroom and compare.

Try it on a real job: FieldSquire's Solo plan is free for 14 days with no credit card — unlimited manual estimates and AI-assisted drafts you review line by line. Start the free trial or see the painting estimating app guide.