Typical Florida installed cost for house exterior wash (soft wash): $250–$600 — a curated 2026 planning range, not a bid. The most accurate figure for your home comes from a verified local pro (free, below).
Dirty siding in Florida is usually algae, mildew, and chalking building up in the humidity — a low-pressure soft wash with cleaner lifts it without the damage high pressure can do to siding.
Plan it — not an emergency.
Common causes:
• Algae and mildew growth in Florida's heat and humidity
• Chalking and grime accumulating on painted surfaces
• Shade and tree cover keeping walls damp
• Coastal salt residue clinging to the exterior
• High pressure that etches siding or forces water behind it
• Water-only cleaning that leaves mildew to return quickly
• No look at the siding type before quoting a method
• Blasting near windows, vents, and light fixtures
• No proof of insurance or a track record — Florida doesn't license this trade, so those are what protect you
What's the black or green film on my siding?
Typically algae and mildew, which flourish on damp, shaded walls in Florida's climate, along with general grime and chalking on painted surfaces. It's mostly cosmetic but keeps spreading. A soft wash with a cleaning solution removes it at the root so it stays clean longer.
Can dirty siding be cleaned without damage?
Yes, with the right method. Soft washing uses low pressure and cleaner rather than brute force, which protects siding, paint, and stucco while still killing the algae and mildew. High pressure is what causes damage — etching surfaces and driving water where it shouldn't go.
House exterior wash (soft wash): $250–$600 (typical ~$400)
Single vs. two-story and level of soiling drive it; coastal salt residue adds time.
Curated Florida 2026 estimate — installed cost for a typical FL single-family home, not a bid.
Florida does NOT issue a state license for this trade (local licensing was preempted for most non-structural trades). What protects you instead: general-liability insurance, workers’ comp, and a real track record — exactly what our verification checks.
Whether a permit applies depends on scope — when in doubt, ask the county building department before work starts.
Basis: HB 735 (2021) local-license preemption.
Your request goes to a single verified Pressure Washing & Exterior Cleaning pro in your area — you stay anonymous until you tap connect, and we never sell your info.
Black Streaks On Roof · Driveway Pressure Washing Cost · Green Algae On Driveway
Covered: Lee · Pinellas · Sarasota · Charlotte · Hillsborough · Manatee | As of 2026-08-21 | Local numbers appear only when the sample is large enough to protect privacy.