How we price
Where our numbers come from, who checks them, and who owns the local crews we point you to.
How we source prices
Our ranges are compiled from published contractor pricing, per-square-foot and per-hour rates across a spread of US markets, and conversations with working pressure-washing professionals. We express every service as a low / average / high band rather than a single number, because real quotes vary with size, condition, and access.
How we keep them current
We review figures as the market moves and stamp every page with a last-updated date. A licensed pressure-washing professional reviews our numbers and method notes for accuracy — especially the soft-wash-versus-pressure guidance, where the wrong method causes real damage.
The standards we defer to
Where a question has a published answer from a trade body or a government agency, we use that answer instead of our own — and we link it so you can check us rather than take our word for it. The method guidance across this site rests on four sources in particular:
- Asphalt Roofing Manufacturers Association — algae discoloration and shingle cleaning. ARMA is why every roof page here says soft-wash only: it tells homeowners not to use a power washer, and prescribes a cleaning solution with a 15–20 minute dwell time. Its technical bulletins are the underlying documents.
- Tile Roofing Industry Alliance — tile roof maintenance. Slightly more permissive than ARMA (it allows professional low-intensity washing), and we report that difference rather than flatten it.
- US EPA — stormwater best practices. Wash water carrying detergent is a regulated discharge under the NPDES program, which is a real cost input for a compliant crew.
- NOAA — tropical cyclone climatology. The hurricane season dates behind our coastal-metro reasoning.
Where a claim is ours — the price ranges themselves, the metro adjustments — we say so and explain the basis rather than dressing it up as somebody else’s finding.
How we recommend local pros — and who owns them
Ownership disclosure, first, because it is the part that matters: the local pressure-washing sites we link to by metro are published by the same company that publishes this guide. When a page says “the crew we recommend” in a given metro, that is one of our own properties. No money changes hands for a placement — but ownership is a material connection whether or not anyone is paid, so we state it here and in the footer of every page rather than let the recommendation read as independent.
What that does and does not change. It does not change the price ranges: they are compiled the way this page describes, and a crew cannot buy a better number, because the numbers are not for sale to anyone including us. It does mean you should treat the local recommendation as ours rather than as a survey of the market — so compare it against two or three other quotes in your metro, the way you would with any single referral. We don’t run a lead form on this site and we don’t sell your information.
What we don’t do
We don’t invent prices, fabricate reviews, or take a cut of any job. Our ranges are estimates to inform your budget — not quotes, and not a guarantee of any specific price.