Charleston's combination of historic architecture, salt air, and year-round humidity creates one of the most demanding environments for exterior surfaces in the Southeast. Pressure washing isn't optional here — it's scheduled maintenance. But the range of quotes you'll get can be confusing: $150 from one company and $500 from another for what sounds like the same job.
This guide breaks down exactly what pressure washing costs in Charleston in 2026, by surface type, and explains why the price differences exist.
2026 Pressure Washing Prices by Surface
| Surface | Price Range | Method |
|---|---|---|
| Driveway (2-car, ~400 sq ft) | $100–$250 | High-pressure wash |
| Driveway + walkways + patio | $175–$375 | High-pressure wash |
| House exterior (soft wash) | $200–$500 | Low-pressure + chemical treatment |
| Deck or porch | $150–$350 | Low-to-medium pressure + deck cleaner |
| Roof (soft wash) | $250–$600 | Low-pressure + sodium hypochlorite |
| Fence (wood, up to 200 linear ft) | $150–$300 | Medium pressure |
| Pool deck / paver patio | $125–$275 | Medium-to-high pressure |
| Full property bundle | $500–$1,200+ | Mixed methods by surface |
Important: These are 2026 Charleston-area prices. Myrtle Beach prices typically run 10–15% lower for comparable work. See Myrtle Beach pressure washing for Grand Strand pricing.
Driveway and Concrete: $100–$375
Concrete is the most straightforward surface to pressure wash. It can handle high PSI (3,000–4,000) without damage, and results are immediately visible — the before/after contrast on a neglected Charleston driveway is dramatic.
Price depends on:
- Square footage. A standard 2-car driveway (400 sq ft) runs $100–$175. Add walkways and a back patio, and you're looking at $175–$375.
- Condition. Light dirt and tire marks are quick work. Heavy oil stains, moss buildup, or years of neglect require pre-treatment chemicals and multiple passes — expect the higher end of the range.
- Access. Steep driveways or properties where the truck can't park close to the work area add setup time and cost.
For most Charleston homeowners, a driveway wash is the highest-ROI pressure washing job you can do — visible curb appeal improvement for under $200.
House Exterior (Soft Wash): $200–$500
This is where the price range widens and the technique matters most. A house exterior in Charleston should never be hit with full-pressure water. The correct method is soft washing: low pressure (under 500 PSI) combined with a cleaning solution — typically diluted sodium hypochlorite — that kills mold, algae, and mildew at the root.
Why the price range is so wide:
- Home size. A 1,500 sq ft ranch-style home costs less than a 3,500 sq ft two-story colonial. Most companies quote by linear footage or total exterior square footage.
- Number of stories. Two-story homes require extended wands or ladder work. Some companies charge a flat surcharge; others price per square foot and the total is simply higher.
- Level of contamination. A home washed annually needs one pass. A home that hasn't been washed in 3+ years — with visible green or black streaks on the north-facing side — needs pre-treatment, dwell time, and sometimes two applications.
- Surface material. Vinyl siding is the most straightforward. Wood siding requires more careful technique. Stucco and brick in Charleston's historic district need experienced operators who understand the material limitations.
Deck and Porch: $150–$350
Wood decks are the most commonly damaged surface from bad pressure washing. Full pressure raises the wood grain, causes splintering, and can force water into end-grain joints where it causes accelerated rot. Proper deck cleaning uses low-to-medium pressure (800–1,500 PSI) with a dedicated deck cleaning solution.
Charleston decks take extra punishment from salt air and humidity. Expect to re-stain or re-seal within a day or two after cleaning — the cleaning opens the wood pores, and leaving them unsealed in coastal air undoes the work.
A 200-square-foot deck runs $150–$250. Larger decks with railings, stairs, and multiple levels push toward $350. Add $100–$200 if you want the company to apply sealer or stain after cleaning.
Roof Soft Wash: $250–$600
Roof cleaning is the highest-cost and highest-risk pressure washing service. It's also the one where hiring a professional is least optional — DIY roof pressure washing voids most shingle warranties and risks catastrophic damage.
Roofs are soft-washed exclusively. The dark streaks you see on asphalt shingle roofs are Gloeocapsa magma (a cyanobacterium), not dirt. High pressure won't remove it effectively and will strip protective granules from shingles — shortening roof life by years. The chemical treatment kills the organism; low-pressure rinse removes the residue.
Price factors:
- Roof size and pitch. Steeper roofs require more safety equipment and slower work.
- Severity of staining. Light discoloration = one treatment. Heavy black streaks covering most of the roof = longer dwell time and potentially a second application.
- Roof material. Asphalt shingles are standard. Metal roofs, tile roofs, and slate (common on historic Charleston homes) require specific chemical formulations and techniques.
A typical 1,800-square-foot Charleston roof runs $300–$450. Larger or heavily stained roofs push to $500–$600.
Commercial Pressure Washing Rates
Charleston businesses — restaurants, storefronts, office buildings, HOA common areas — have different pricing structures than residential. Most commercial work is quoted by square footage or by project scope rather than by surface type.
| Commercial Surface | Price Range |
|---|---|
| Storefront / building exterior (per 1,000 sq ft) | $100–$250 |
| Parking lot (per 1,000 sq ft) | $80–$150 |
| Restaurant grease removal (dumpster pad area) | $150–$400 |
| HOA sidewalks and common areas | $300–$800+ (varies by scope) |
| Fleet / equipment washing | $50–$150 per vehicle |
Commercial clients often negotiate recurring contracts (monthly or quarterly) at discounted per-visit rates. If you manage a commercial property in Charleston, ask about contract pricing — it's typically 15–25% less than one-off quotes.
What Drives Charleston Prices Higher Than Other Markets
Charleston pressure washing prices run 10–20% above state averages. Three structural factors explain the gap:
- Historic district expertise. Homes in South of Broad, Harleston Village, and the French Quarter have aged brick, stucco, and painted wood siding that require specialized soft-washing knowledge. Contractors who operate in historic areas carry higher insurance and invest in training — that cost is reflected in pricing.
- Higher operating costs. Insurance, fuel, and labor costs in the Charleston metro are higher than in Myrtle Beach or Columbia. The Charleston market also has stricter environmental regulations around chemical runoff, especially near the harbor and tidal creeks.
- Salt air intensity. Charleston's peninsula location means salt air exposure from multiple directions. Exterior surfaces deteriorate faster, contamination is heavier, and jobs take longer than equivalent work in an inland market.
How to Get an Accurate Quote
- Send photos. At minimum, send 4–6 photos showing each side of the surface you want cleaned. Close-ups of the worst areas help the company scope the job accurately.
- Specify surfaces clearly. "I want my house washed" is vague. "Soft wash vinyl siding on a 2-story, 2,400 sq ft home with moderate green algae on the north side" gets you an accurate quote.
- Ask about chemicals and plant protection. Any company that doesn't pre-wet your landscaping and rinse after is cutting corners that will cost you in dead plants.
- Verify insurance. Ask for a certificate of insurance. In Charleston especially, where historic home damage can be expensive to remediate, an uninsured operator is a liability.
- Get 2–3 quotes for jobs over $400. The variance between companies is real, and comparison reveals who's pricing fairly vs. guessing.
Find Verified Pressure Washing in Charleston
ProPulse lists verified pressure washing companies in Charleston who carry insurance, use proper soft-washing techniques for siding and roofs, and have real reviews from local homeowners. For Grand Strand pricing, see pressure washing in Myrtle Beach.