If you've ever searched for pressure washing in Charleston, SC, you've probably seen quotes ranging from $150 to well over $1,200 for what sounds like the same job. The price spread feels confusing, but it makes sense once you understand the variables. This 2026 pricing guide breaks down exactly what Charleston homeowners should expect to pay, what drives the numbers up or down, and how to tell a fair quote from a lowball that will cost you more later.
Average Pressure Washing Cost in Charleston (2026)
Across the Greater Charleston area — from downtown to Mount Pleasant, West Ashley to Summerville — most residential pressure washing jobs fall between $200 and $750. The median homeowner in our service area pays around $385 for a full exterior wash. Here's how the most common jobs stack up in 2026:
House soft wash (2,000 sq ft): $325 – $525
Driveway & walkway concrete cleaning: $195 – $385
Roof soft wash: $450 – $975
Deck or fence pressure washing: $175 – $425
Gutter exterior (face) cleaning: $125 – $225
Full-property bundle (house + drive + walks): $525 – $895
The #1 reason Charleston quotes vary so much isn't the company — it's the amount of organic growth. A heavily shaded Mount Pleasant home can cost twice what an identical home on Daniel Island costs simply because of how much mildew has taken hold.
What Actually Drives the Price
Square footage is only part of the equation. When a good contractor walks your property, they're measuring five things:
Home size and number of stories. A two-story home takes roughly 40% longer to soft-wash safely than a single-story home of the same footprint.
Siding material. Hardie-plank, brick, vinyl, and stucco all clean differently. Stucco and painted cedar need gentler chemistry and more dwell time.
Organic growth level. Heavy green algae or black mildew streaks require stronger surfactant blends and a second application. This is the biggest price variable in the Lowcountry.
Access and landscaping. Tight side yards, dense shrubs, and delicate plantings add setup time. Charleston's mature azaleas and camellias need to be pre-rinsed and tarped.
Water source and drainage. Homes on wells, or properties without easy hose spigots, add time. HOAs that require runoff capture (parts of Kiawah, Seabrook, Daniel Island) add cost.
House Washing: What to Expect
Most Charleston homes are best cleaned with a soft wash — low-pressure application of a specialized biodegradable cleaner that kills mildew at the root, not just rinses it off. A reputable soft wash on a 2,000 sq ft single-story home runs $325–$425 and takes 2–3 hours on site. Two-story or larger homes push toward $525.
Be wary of any quote under $225 for a full home — that's usually a crew blasting siding at high pressure, which drives water under trim, damages paint, and leaves the mildew behind to come back in 60 days.
Roof Cleaning: The Most Misquoted Service
Charleston roofs develop Gloeocapsa magma — the black streaks you see on shingles — faster than almost any other climate in the U.S. Our humidity, salt air, and tree cover create near-perfect conditions for it. A proper soft wash roof cleaning costs $450–$975 depending on pitch, square footage, and access. Anything under $300 is either a pressure-wash (which voids most shingle warranties) or a drive-by that won't actually kill the algae.
Driveway & Concrete Pricing
Concrete cleaning is usually billed per square foot. In 2026, expect $0.15–$0.30 per square foot for driveways, sidewalks, and pool decks. A standard two-car Charleston driveway (about 600 sq ft) runs $180–$225. Add $75–$150 for post-treatment sealing if you want the clean to last 18+ months.
How Often Should You Budget for It?
In the Lowcountry, most homes need a full exterior wash once a year, usually in spring. Driveways and walkways typically need it every 12–18 months. Shaded north-facing walls and roofs sometimes need an 18-month refresh. A realistic annual budget for a mid-size Charleston home: $400–$700/year for exterior cleaning across all surfaces.
Red Flags in a Quote
No on-site or video estimate. Quotes given sight-unseen are rarely accurate.
Suspiciously low flat rate. Under $150 for a whole house almost always means corners cut.
No insurance documentation. Pressure washing liability insurance should be shown, not promised.
Pressure-only pitch for soft surfaces. Siding and roofs should be soft-washed, not blasted.
Ready to get started?
Every Charleston property is different, and a fair quote should reflect your home, not a generic per-foot rate. We offer free, no-obligation estimates with photos of your property's current condition and a firm price in writing. Request a free quote and we'll get back to you the same business day.
