How Much Exterior Paint for a 2,000 Sq Ft House?

A 2,000 sq ft single-story house needs about 8 gallons of exterior paint for two coats on smooth siding — 9 gallons for textured siding, 11 for brick or stucco. The floor area doesn't directly tell you the paint quantity; what matters is the wall perimeter, the wall height, and how much of it is windows and doors. Here is the complete worked example so you can adapt it to your own house.

Worked example: single-story, 50 × 40 ft footprint

1. Perimeter: 2 × (50 + 40) = 180 linear feet.
2. Gross wall area: 180 × 9 ft walls = 1,620 sq ft.
3. Subtract openings: 15 windows × 15 = 225 sq ft; 3 doors × 20 = 60 sq ft; total 285 sq ft.
4. Paintable wall: 1,620 − 285 = ~1,335 sq ft.
5. Two coats: 1,335 × 2 = 2,670 sq ft of coverage needed.

Gallons by siding type

The per-texture coverage splits are estimates within the 250-350 sq ft/gal exterior range published by cypaint.com. Verify each row: 2,670 ÷ 350 = 7.63 → 8; 2,670 ÷ 300 = 8.9 → 9; 2,670 ÷ 250 = 10.68 → 11. Exterior paint is rounded up to whole gallons rather than quarts — the quantities are large enough that quart-level precision doesn't matter.

Don't forget the gables

The example above assumes flat 9-foot walls all around. If your house has gable ends — the triangular wall sections under the roof peaks — they add paintable area the perimeter math misses. Gables typically add about 10-15% to the wall area (estimate). For a precise number, measure each gable triangle as ½ × base × height and add it to the 1,335 sq ft before dividing by the coverage rate. On this house, 12% extra gable area would move smooth siding from 8 gallons to about 9.

Two-story homes and different footprints

A two-story 2,000 sq ft house has a smaller footprint — say 32x32 ft — but roughly 18 feet of wall height instead of 9. Perimeter 128 × 18 = 2,304 sq ft of gross wall, which after openings is far more paintable area than the single-story version. Floor area alone never determines paint quantity: always work from perimeter and height. Our exterior paint calculator handles any footprint and height.

Primer for bare wood and masonry

Previously painted siding in sound condition needs only the two finish coats. But bare wood, new fiber-cement, or unpainted masonry should be primed first — primer seals the surface so the finish paint covers evenly instead of soaking in patchily. Size primer at about 250 sq ft/gal on bare wood (an estimate from the 200-300 sq ft/gal rough-surface range in the KILZ technical data sheet): 1,335 ÷ 250 = 5.34 → 5.5 gallons of exterior primer for this house. See our primer calculator.

Trim, soffits, and fascia are separate

Keep trim, soffits, fascia boards, and shutters as their own line item. They're usually painted with a different product — often a glossier trim paint — and sometimes a contrasting color, so folding them into the siding gallons muddies both estimates. Measure their linear feet, estimate at the trim paint's coverage rate, and buy it separately.

Soffits, fascia, and trim: a quick sizing method

Soffits (the underside of the roof overhang) and fascia (the vertical board at the roof edge) run the full perimeter of the house. For our 180-ft-perimeter example: measure the overhang width — say 2 ft — and the soffit area is roughly 180 × 2 = 360 sq ft. Two coats at 350 sq ft/gal need 360 × 2 ÷ 350 = 2.06 → round up to 2.25 gallons. Fascia is perimeter × board height (a 1x8 is about 0.6 ft): 180 × 0.6 = 108 sq ft → about 0.75 gallons for two coats. Trim is usually a different product and color than the siding, so buy these separately and don't fold them into the siding gallons.

Buying in 5-gallon buckets

Exterior jobs use enough paint that 5-gallon buckets make sense: 8 gallons is one 5-gallon bucket plus three 1-gallon cans; 11 gallons is two 5-gallon buckets plus one 1-gallon can. Two practical reasons beyond the per-gallon savings: fewer cans to manage on a multi-day job, and — more importantly — you can box the paint (mix all buckets together in a 5-gallon pail as you go), which eliminates slight tint variations between factory batches. On a large wall, batch variation is visible; boxing prevents it.

Timing and weather matter for exteriors

Exterior paint has a temperature and humidity range printed on the label — follow it, because paint applied outside its range may not cure properly, which wastes the paint and the labor. A few practical rules: don't paint in direct hot afternoon sun (the paint skins over before it levels, leaving lap marks — start on the shaded side and follow the shade around the house), don't paint when rain is expected before the stated dry time, and avoid windy days that blow debris into wet paint. A calm, overcast day in the label's temperature range is ideal.

Frequently asked questions

Related

• Exterior paint calculator — run this math for your own footprint and siding type.
• Primer calculator — for bare wood and masonry.
• Paint coverage per gallon by type — where the exterior rates come from.
• Interior paint cost per square foot (2026) — what the paint itself costs by tier.