Power washing cost guide, St. Catharines 2026.

Illustrative local ranges so you know roughly what to expect before anyone visits. Confirm scope and a flat price with a licensed local contractor before any work begins.

Pricing an exterior wash in St. Catharines? Here is what the numbers usually look like before you call anyone.

These are illustrative typical-Niagara ranges for 2026, based on publicly available market information. The actual price for a given job depends on size, surface, and how heavy the staining is. Confirm scope and a firm flat price with a licensed local contractor before any work starts.

Residential cleaning ranges

Job	What it covers	Illustrative range
House soft wash	Full exterior: siding, soffits, eaves	$300 to $600
Driveway or walkway	Concrete or interlock, surface-cleaner finish	$100 to $250
Patio or deck	Wood, composite, or stone, gentle clean	$120 to $350
Roof soft wash	Asphalt-shingle algae treatment, by size	$350 to $700
Fence	Per side, wood or vinyl	$80 to $250
Windows or gutter faces (add-on)	Exterior only, while on site	$60 to $180

What changes the price

Size. A bungalow versus a large two-storey is the biggest single factor on a house wash.
How bad it is. Light maintenance dirt is quick; years of heavy north-side algae takes more solution and dwell time.
Surface and access. Steep lots, tight side yards, and delicate finishes take more care, which can nudge the price.
Bundling. Doing the house, driveway, and deck together is cheaper than three separate visits.

The bundle most St. Catharines homeowners pick: a house soft wash plus the driveway, which together usually land around $400 to $750 depending on size. One visit, one clean exterior. Confirm the bundle price with a licensed local contractor.

How exterior cleaning is usually quoted

Most contractors will give a flat written price for a residential job from a couple of photos and your address, often the same day, without an in-person sales visit. Larger or commercial properties usually get a site look first. A flat price up front, rather than an hourly meter, is the norm for this work and the thing to confirm before booking.

Built by Living Websites

This guide keeps itself current.

It does that because it is a living website. That is what Living Websites builds for Niagara businesses: a site that stays current, reads who is visiting, and reacts to what is happening now. If you run a Niagara business and your website is stale, that is what we fix.

Hiring a soft-wash or power-washing contractor in Niagara

Before any work starts, confirm the contractor carries liability insurance. Ask whether they soft wash exteriors and roofs rather than pressure-blasting them, and ask for references or photos of past work in the Niagara area. A contractor who wants to put a high-pressure tip on your siding or shingles is worth skipping.

Insist on a written, flat quote that says which surfaces get soft washing and which get higher-pressure cleaning. That distinction matters: house exteriors, roofs, and older siding need low pressure plus a cleaning solution, while hard flatwork like a concrete driveway can take a surface cleaner at higher pressure. An estimate that treats every surface the same is a warning sign.

Ask specifically how the roof will be cleaned if roof algae is part of the job. The asphalt-shingle manufacturers approve soft washing only; high pressure strips the protective granules and can void the warranty. The right answer is a low-pressure treatment, never a pressure washer on the shingles.