Power Washing Nassau County: What It Costs and Who to Hire
Power washing in Nassau County covers everything from a $350 ranch wash in Levittown to a $950 full-property service in Old Westbury. Here is what it actually costs, what separates a good Nassau County crew from a bad one, and what the specific conditions of Nassau homes demand.
Nassau County pricing by service
House washing (soft wash): $350 to $650 for a standard 1,500 to 2,500 sq ft Nassau ranch or colonial. Larger Great Neck, Manhasset, and Garden City homes run $600 to $950.
Driveway cleaning (pressure wash): $175 to $350 for a two-car asphalt or concrete driveway. Pavers add $50 to $100 for the extra rinse cycle.
Deck washing: $150 to $375 depending on deck size and how much algae or mold needs a biocide treatment. Cedar and pressure-treated wood get different chemistry — a good crew knows the difference.
Roof cleaning (soft wash): $550 to $850 for a standard 2,000 to 2,500 sq ft Nassau home. Steeper pitches or third-story access bumps the price.
Full property package (house + roof + driveway): $950 to $1,500. The most cost-efficient way to do everything in one booking.
Why Nassau County homes have specific soft-wash needs
Nassau County has one of the densest concentrations of mature tree canopy in the metro area — especially in Garden City, Merrick, Malverne, and the North Shore villages. Dense tree coverage means constant organic debris, heavy algae and moss growth on north-facing surfaces, and roofs that streak faster than homes in open neighborhoods.
Salt air from both the Great South Bay (south shore) and Long Island Sound (north shore) leaves mineral deposits on siding, windows, and concrete. A standard pressure rinse won't remove those. You need a soft wash with a surfactant that breaks down the salt bond.
Nassau's housing stock skews toward 1950s and 1960s construction — Levittown Capes, Massapequa ranches, Hicksville split-levels. Most of that vinyl siding is original or was installed in the 1980s and 1990s. High-pressure washing on aged vinyl will crack seams and drive water behind house wrap. Soft wash only.
How to screen Nassau County pressure washing companies
Nassau County requires a Home Improvement Contractor (HIC) license for any exterior work on a residential property. Ask for the license number before booking. You can verify it at the Nassau County Department of Consumer Affairs website.
Request a Certificate of Insurance showing general liability of at least $1,000,000 and workers' compensation. If a tech slips on your roof, you want to know you're protected.
Ask specifically whether they soft-wash or pressure-wash siding and roofs. A company that says 'we pressure wash everything' is either inexperienced or will damage your vinyl. CertainTeed, Mastic, and James Hardie all require soft wash for warranty compliance.
Get a written estimate that lists each surface, the method (soft wash or pressure), the chemistry being used, and what cleanup is included. A single-line quote is a red flag.
Towns we serve in Nassau County
We service all of Nassau County: Garden City, Great Neck, Manhasset, Port Washington, Mineola, Hempstead, Baldwin, Merrick, Bellmore, Wantagh, Massapequa, Levittown, Hicksville, Syosset, Jericho, Plainview, Bethpage, Westbury, Roslyn, and Old Westbury — plus every village in between. Same-day estimates available across Nassau.