How much paint for a 1,200 sq ft house?
How much paint for a 1,200 sq ft house? Buy 15 gallons + 1 quart to give every interior wall two coats at 8 ft ceilings, or 8 gal for one coat. A house carries about 2.2 sq ft of paintable wall per sq ft of floor after doors and windows (our factor), so 1,200 sq ft of house is roughly 2,640 sq ft of wall.
| Surface | Area | Coats | Buy |
|---|---|---|---|
| All walls | 2,640 sq ft | 1 | 8 gal |
| All walls | 2,640 sq ft | 2 | 15 gal + 1 qt |
| All ceilings (flat white) | 1,200 sq ft | 2 | 7 gal |
| Trim & doors (semi-gloss) | varies | 2 | 1 to 2 gal |
Nobody paints a whole house in one color, and that matters for the shopping list: gallons split across four colors round up four times. If your plan is greige everywhere plus one accent wall and a moody office, price the big color from this page and the small ones with the single-wall calculator.
What the job costs (estimate)
The wall paint itself is about $695 for two coats in a $45 mid-grade line (15 gallons + 1 quart), with ceilings and trim bought as their own cans. Labor is where a whole-house repaint lands: painting every interior wall in a house this size typically runs $2,000 to $4,000 in most markets, walls only, no ceilings or trim. That is a planning band, not a quote, and it swings on wall height, prep, and how many colors you run.
Price grades, ceilings, trim, and primer on the paint cost calculator.
This is the smallest house that fits into pails
The order for this house comes out at three 5-gallon pails plus a quart. That matters because a pail is priced under five separate gallons at every big-box paint desk, usually by 10 to 15%, and 1,200 sq ft is the smallest house on this site where the whole main-color order drops into pails without stranding paint you will never open.
The archetype at this size is the post-war ranch: three small bedrooms, one bathroom, and a hallway you can touch both walls of. Every room in it is small enough that a single gallon does its walls in two coats, which is why the room-by-room approach still works here and starts falling apart one size up.
What eats the saving is the color count. Three pails is at most three colors before you are back to buying gallons, and every extra color rounds its own can up. If the plan is a different shade in each bedroom, price it as gallons from the start; the pail discount was never going to survive it.
Questions people ask
Is that every room, or the rooms people actually paint?
Every wall in the house, twice. Real repaints usually skip closets, the garage, and a room or two, so treat 15 gallons + 1 quart as the whole-hog ceiling and subtract rooms you're leaving alone. One 12x12 room is roughly 2 gallons of the total.
How much for ceilings and trim on top?
Ceilings across 1,200 sq ft take about 7 gal of flat white for two coats. Trim, doors, and baseboards for a whole house typically run 1 to 2 gallons of semi-gloss (2 to 3 for larger houses), painted from their own can.
Do 9 ft ceilings change it much?
By 12.5%: wall area scales straight with height. At 9 ft this house carries about 2,970 sq ft of wall and wants 17 gal for two coats. The calculator has a height setting.
Other house sizes
Same floor area, outside walls: the exterior calculator takes your footprint, story count, and real door and window counts. Have room measurements instead? Use the room paint calculator room by room. One accent color: single-wall calculator. Materials dollars: paint cost calculator.