How much paint for a 2,500 sq ft house?
How much paint for a 2,500 sq ft house? Buy 31 gallons + 2 quarts to give every interior wall two coats at 8 ft ceilings, or 16 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 2,500 sq ft of house is roughly 5,500 sq ft of wall.
| Surface | Area | Coats | Buy |
|---|---|---|---|
| All walls | 5,500 sq ft | 1 | 16 gal |
| All walls | 5,500 sq ft | 2 | 31 gal + 2 qt |
| All ceilings (flat white) | 2,500 sq ft | 2 | 14 gal + 2 qt |
| Trim & doors (semi-gloss) | varies | 2 | 2 to 3 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 $1,436 for two coats in a $45 mid-grade line (31 gallons + 2 quarts), 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 $4,000 to $8,000 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.
The stairwell wall is the whole decision
At 2,500 sq ft the house is almost certainly two stories, and that introduces the one surface that decides whether this is a DIY job at all. Measured from the lower tread to the upper ceiling, a stairwell wall runs 16 to 18 feet, and there is no floor under most of it to stand a ladder on. Nothing else in the house is remotely like it.
The honest options are three. An articulating ladder that will sit with its legs on different treads, a plank run between a ladder and the landing, or a painter for that one wall. The third is not a cop-out: crews quote single walls all the time, because this exact wall is why they get called.
Everything else here is ordinary work in larger quantity, so budget the calendar rather than the technique. Thirty-one gallons is about 11,000 sq ft of rolling once both coats are counted, and a strong day on a pole with the cutting in already done is 1,200 to 1,500 sq ft.
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 31 gallons + 2 quarts 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 2,500 sq ft take about 14 gal + 2 qt 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 a house this size), 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 6,188 sq ft of wall and wants 35 gal + 2 qt 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.