Exterior House Painting Cost Calculator

Exterior house painting typically runs $2 to $5 per square foot of wall surface, so most homes land between $3,000 and $10,000+, with the average home around $4,000 to $8,000. The main drivers are the home's size (wall area to paint), the siding surface (smooth vinyl and aluminum are cheapest; wood, stucco, and porous brick cost more), the height (two- and three-story homes need ladders, scaffolding, and more labor), and the prep and condition — which is often the single biggest variable, since scraping, sanding, repairing, and priming a weathered surface adds a lot. Enter your wall area, siding, stories, and prep level in the calculator above for a localized number.

You want paintable wall area, not floor area. The accurate way: for each side, multiply the wall's width by its height (foundation up to the eaves) and add up all the sides; for a triangular gable, take width × height and roughly halve it. Many painters don't subtract small windows because the trim around them still needs painting, which offsets the opening. The quick way: multiply your home's total floor square footage by about 1.5 to approximate the wall area — a 2,000 sq ft home is roughly 3,000 sq ft of siding. Home shape matters (a boxy house has less wall than a sprawling, multi-gabled one). Enter your best wall-area estimate; the surface, stories, and prep factors refine it.

Different surfaces need different prep, primer, and paint, and take more or less labor. Vinyl and aluminum are smooth and easy to coat (after cleaning), so they're cheapest — though vinyl needs vinyl-safe paint in heat-reflective colors. Fiber cement (like Hardie) is a paintable, low-prep surface, a bit more. Wood and lap siding cost more because they usually need the most prep — scraping, sanding, spot-priming bare wood, and caulking. Stucco is textured and porous, so it has more surface area and drinks more paint. Brick and masonry are the priciest: very porous, needing a masonry primer and lots of paint, and painting brick is hard to reverse. The calculator sets the base rate by surface, with prep handled separately.

Paint only lasts as well as the surface under it, so prep is the difference between a job that lasts 8–12+ years and one that peels in two. Exterior prep can include pressure washing off dirt, mildew, and chalk; scraping and sanding failing old paint (painting over loose paint just lets the new coat peel with it); priming bare wood, stains, and repairs; fixing damaged siding and wood rot and caulking gaps; and masking windows and landscaping. On a weathered or peeling home this is extensive, and since labor is the dominant cost, a home needing heavy prep costs far more than a sound one that just needs a wash. It's exactly why two same-size homes can quote very differently — and why a suspiciously low bid usually means skipped prep you'll pay for later.

Yes. A single story is the baseline; a two-story home adds about 20% and a three-plus-story home about 40% here. The paint and the wall area per floor don't change much, but reaching upper walls safely does — the crew needs extended ladders, scaffolding, or lifts, works more slowly and carefully at height, and spends time repositioning equipment. Tall gables, dormers, and hard-to-reach areas add even more. If your home is multi-story, select that in the calculator so the estimate reflects the added access labor; it's a real and predictable premium, not an upsell.

A quality job typically lasts 7 to 15 years, depending on surface, paint, prep, and climate. Wood often needs repainting every 5–10 years, stucco 5–10+, and fiber cement, aluminum, and vinyl can hold paint 10–15 years. The biggest longevity factor is prep — good cleaning, scraping, priming, and repair makes paint last much longer, while poor prep causes early peeling. Paint quality matters too: premium exterior paints with better resins and UV resistance outlast cheap paint by years, and two coats beat one. Climate and exposure play in as well — intense sun, heat, and south/west-facing walls weather faster, and darker colors fade more. Investing in prep and quality paint is what makes a job cost-effective over time.

Usually yes for an exterior, because the surface takes a beating from sun, rain, and temperature swings. Premium paints cost more up front but have better resins, adhesion, and UV/fade resistance, so they last noticeably longer and hold color better — often paying for themselves in added years before the next repaint. Two coats give more even coverage and a thicker, more durable film than one, and are often needed for good coverage on a color change or a porous surface. The calculator includes a premium-paint/two-coat add-on (~$0.50/sq ft). Given that labor is the majority of the cost, spending a bit more on paint and a second coat is often the best value on the whole job.

If your home was built before 1978, likely yes. Older homes may have lead-based paint, and disturbing it during scraping and sanding releases hazardous dust. Under the EPA's Renovation, Repair and Painting (RRP) Rule, contractors disturbing paint on pre-1978 homes must be certified and follow lead-safe work practices — containment, careful cleanup, and proper disposal — to protect your family and the crew. That adds cost (a ~$800 add-on here) but it's both a safety necessity and, for hired work, a legal requirement. The calculator includes a lead-safe prep option so pre-1978 estimates reflect it; confirm your contractor is EPA RRP–certified.

DIY can save on labor — the largest cost — and a single-story home in good condition with accessible walls is doable for a careful homeowner. But exterior painting is a big job: extensive prep, working on ladders (real fall risk), buying or renting equipment, weeks of time, and the skill to get an even, lasting result. Mistakes in prep or application lead to early failure. A pro costs more but brings prep-and-application expertise, the right equipment and speed (days versus weeks), safety and insurance for heights, and often a warranty. For tall homes, heavy prep or repairs, or if you're short on time or uneasy with heights, a pro is strongly advisable. This calculator estimates professional cost so you can weigh it against DIY.

Mild, dry weather — generally late spring, summer, and early fall in most climates — because exterior paint needs the right temperature and humidity to apply, adhere, and cure. Most paints want application above about 50°F and below the mid-80s, with the temperature staying in range as it dries, including overnight; too cold and it won't cure, too hot or in direct sun and it dries too fast and bonds poorly. The surface must be dry, and you need a multi-day dry window, since rain during or soon after painting can ruin the finish and high humidity slows drying. Pros work the shady side and follow the sun. Painting in the wrong conditions causes adhesion problems and a shorter-lasting job, so scheduling around the weather is worth it.