Cost guide
How Much Does It Cost to Paint a Room?
A room can cost $100 or $900 to paint depending on who holds the roller, how many coats the walls need, and what's already on them. Here are the typical US price ranges, what drives them, and a worked example for a 12×12 ft room.
By HowMuchBuild Editorial TeamCalculation reviewedUpdated October 2026
Quick answer: typical cost ranges
| Item | Typical range |
|---|---|
| Wall paint (per gallon) | $25–$70 |
| Primer (per gallon) | $20–$40 |
| Supplies (rollers, tape, drop cloths…) | $40–$100 |
| DIY, per room | $100–$300 |
| Pro, per room | $300–$900 |
Paint itself is only part of the story — for a DIY job, supplies and primer can rival the paint cost. For a pro job, labor is most of the price: the paint on the wall is often the cheapest line item on the quote.
What drives the price
- Room size. Paint need scales with wall area, not floor area — an 8-ft ceiling vs. a 10-ft ceiling changes the math noticeably.
- Coats. Two coats is the standard for even color; one coat over a similar existing color can work, while dramatic color changes sometimes need three.
- Paint grade. Contractor-grade vs. premium paints can differ 2× per gallon. Better paint covers better and lasts longer — cheap paint that needs a third coat isn't cheap.
- Primer needs. New drywall, patches, stains, and dark-to-light changes need primer. Previously painted walls in good shape usually don't.
- Ceilings and trim. Including the ceiling or repainting trim adds paint, time, and cutting-in work — quotes often price these separately.
- Wall condition. Patching, sanding, and caulking are labor hours. Smooth, clean walls are the cheapest starting point.
- Region. Pro labor rates vary enormously by market — the same room can cost double in a high-cost metro.
Worked example: 12×12 ft room, 8-ft ceiling
- Wall area: 2 × (12 + 12) × 8 = 384 sq ft, minus roughly 40 sq ft for a door and a window = ~344 sq ft to paint.
- Paint: ~344 sq ft at 350–400 sq ft per gallon per coat = 1 gallon per coat → 2 gallons for two coats, at a typical $30–$60/gal = $60–$120.
- Primer (if needed): 1 gallon at $20–$40 = $20–$40.
- Supplies: roller covers, brush, tape, drop cloths, tray — typically $40–$80 for one room (less if you already own the basics).
- DIY total: roughly $100–$240, or up to ~$280 with primer.
- Pro painted: a standard bedroom typically $300–$800 including paint and prep.
Get your exact gallons with our paint calculator — it subtracts doors and windows and compares coat counts for you.
How to keep the cost down
- Prime instead of triple-coating. One coat of primer plus two of paint beats three coats of expensive paint.
- Do the prep yourself. Patching, sanding, and taping are the labor-heavy, skill-light parts — even if you hire the rolling out.
- Buy mid-grade paint. The sweet spot is above contractor-grade and below designer lines — better coverage per dollar.
- Keep colors close. Staying near the existing color can save a full coat.
- Reuse supplies across rooms. Brushes, trays, and drop cloths amortize fast over a whole house.
Frequently asked questions
How much does it cost to paint a 12×12 room?
As a typical range: $100–$280 DIY (paint, primer if needed, and supplies) or $300–$800 professionally painted. Two coats on ~340 sq ft of wall takes about 2 gallons of paint. Prices vary widely by region, paint grade, and how much prep the walls need.
How many gallons of paint do I need for one room?
Figure roughly 350–400 sq ft per gallon per coat. A standard 12×12 room with 8-ft ceilings has about 340 sq ft of wall after subtracting a door and window — so one gallon per coat, and two coats means two gallons. Our paint calculator does this math with your exact dimensions.
Is it cheaper to paint yourself or hire a pro?
DIY is almost always cheaper in dollars — typically $100–$300 per room in materials versus $300–$900 for a pro. A pro wins on speed, tall ceilings, damaged walls needing repair, and finishes where brush marks show. If your time is the constraint rather than the budget, get quotes.
Do I need primer?
Usually yes on new drywall, patched areas, stains, or dramatic color changes (dark to light especially). One coat of primer typically costs $20–$40 per gallon and makes the topcoat cover in fewer coats — skipping it on bare drywall often costs you an extra coat of expensive paint instead.
Why do painting quotes vary so much?
Prep is the hidden variable. A quote that includes patching, sanding, caulking, and two full coats will beat a cheap one-coat quote on durability every time. Paint grade matters too — contractor-grade and premium paints can differ 2× per gallon. Always compare what's included, coat count, and the paint line by name.