Gallons, labor and duration with the detail a professional expects. No sign-up.
Indicative prices for the United States in 2026, before sales tax, per ft², ft and gallon. Sales tax varies by state and city (about 7% on average, and often only on materials): check “Add sales tax” and set your rate below. Replace the prices with your area's or your company's: the estimate updates.
How we calculate: Walls = estimated perimeter × height × 1.15 (partitions) minus openings (about 48 ft² per room). Gallons = ft² × coats ÷ coverage. Patching on 30% of the area; skim coat on all of it if the walls are poor. Duration at about 970 ft² per coat per day. Quantities are converted to metric internally, so 1,000 ft² = 92.9 m². An indicative estimate, not a firm quote. Prices vary by area, the condition of the home, access and the contractor.
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