House Washing Cost

What house washing costs in 2026

Published national benchmarks. Regional labor markets move these more than any other surface.

The regional rows are documented adjustments against the national baseline, not per-metro survey figures — comparable per-city medians are not published. The house washing calculator carries a fuller regional benchmark table.

The $100 to $711 spread reported by Angi is not measurement noise. It is the honest range across a service that covers a small single-storey bungalow with 900 square feet of vinyl and a large two-storey home with 3,000 square feet of stucco and difficult access. The average of roughly $311 describes a typical single-storey house, and it is a reasonable anchor for exactly that.

Two houses of the same advertised floor area can carry very different siding areas, and that is where most quoting error originates. Everything else on this page is downstream of measuring the walls correctly.

Measuring siding area properly

The single highest-leverage skill in house wash pricing, and the one most often skipped.

Siding area is not floor area. It is the wall surface you will actually clean: the perimeter of the building multiplied by the wall height, counted per storey. A home advertised at 2,000 square feet of living space spread over two floors has a footprint of roughly 1,000 square feet — but the walls around that footprint, at two storeys of height, add up to considerably more than 2,000 square feet of siding.

Do not deduct ordinary windows and doors. You still have to clean around them, work more carefully near them, and the time you save on the glass you lose on the trim. Deducting them systematically underprices the job while making the estimate look more precise than it is.

Gables, dormers and bay windows add area that a simple perimeter calculation misses entirely, and they add disproportionate time because they are awkward to reach. A practical approach is to price the rectangular walls by formula and add a flat allowance per gable or dormer, tuned from your own jobs.

If you are quoting from photographs rather than standing at the property, this is precisely the situation where you send an estimate with your assumptions stated rather than a firm quote — because the number you cannot verify is the one that determines the price.

Siding material and storey count

Material changes method and pace. Storey count changes everything else.

Across all of these the constant is method: on siding, the chemistry does the cleaning and the water only rinses. A soft wash uses a sodium hypochlorite solution with a surfactant to kill mould and algae at the wall and carry it away at low pressure. That is a genuine technical distinction from pressure washing, and it is worth stating in your quote — when you are being compared against someone promising to pressure wash vinyl, you are not competing on price, you are competing on whether the job is done correctly.

Storey count is the largest cost step in house washing. Ground-floor siding is quick work with a downstream injector and a wand from the lawn. Everything above it involves ladders, or extension wands and telescoping poles that are heavier, slower and harder to aim, with the added constraint that rinse has to run downward over walls you have already cleaned or you will streak them. Many operators carry an explicit two-storey uplift rather than treating it as a judgement call, because the extra time is both real and predictable.

Access is the quiet multiplier alongside it. Mature planting beds against the walls, narrow side alleys, fenced pool enclosures and steep grade all add setup time before any cleaning begins, and all of them are invisible in a photograph.

Worked examples

Three homes priced with the WashCalc default model — $0.30 per square foot base rate at 350 sq ft per hour, with a 50% target margin.

A small single-storey home, lightly soiled

1,400 sq ft of vinyl siding, light condition, $35 per crew-hour of labor cost, $25 of chemical, $20 travel. The model returns $420 at $0.30 per square foot, across roughly 4 hours. Job cost is near $185, giving a margin around 56%.

This sits above Angi's $311 average, and the reason is worth naming: the average describes all house washes including the small and simple ones, while this figure protects a 50% margin at a realistic production rate. If your local market will not bear $420 for this house, the lever to pull is your cost base, not your margin.

A typical single-storey home with real growth

1,800 sq ft of siding, moderate condition, $35 of chemical. The model returns $648 at an effective $0.36 per square foot, across about 6.4 hours, with job cost near $280 and margin around 57%.

The condition multiplier is doing visible work: the same wall in light condition would price at $540. That $108 difference is not padding. Established growth on shaded north walls needs a stronger mix and a longer dwell, and the calculator adds an extra 1.3 hours of production time to match.

A two-storey home, two-person crew

2,800 sq ft of siding, moderate condition, a two-person crew at $45 per crew-hour, $50 of chemical, $25 travel. The model returns $1,050 at $0.38 per square foot, across roughly 10 hours of production time, with job cost near $525 at a 50% margin.

This is where measuring properly pays for itself. Quoting this home from its listed floor area — call it 2,000 square feet — would have produced a price near $720 for a job that costs $525 to deliver, cutting the margin from 50% to about 27% on the most physically demanding residential work available. The house did not change. Only the measurement did.

DIY versus professional

The ground floor is approachable. Above it, the calculation changes.

Washing the ground-floor walls of a single-storey home is within reach for a careful homeowner. A garden sprayer, a correctly diluted sodium hypochlorite solution with a surfactant, sufficient dwell time and a gentle rinse from a garden hose will clean vinyl siding properly. The chemistry is what matters, and it does not require professional equipment.

Two mistakes account for most DIY damage. The first is reaching for pressure. A pressure washer aimed at lap siding drives water up behind the panels, where it sits against the sheathing and does not dry — and on painted surfaces it strips the finish outright. The second is neglecting the plants. Sodium hypochlorite kills vegetation, so beds need pre-wetting before the solution goes on and thorough rinsing after, and on a heavily planted property that is a genuine share of the job.

The line is height. Once you are washing above the ground floor you are on a ladder with a hose that pulls, working over surfaces made slick by the solution, holding an extension wand that gets heavy quickly. That is the point where the saving stops being worth it, and it is also the point where results start to suffer — streaking from uneven rinse is the usual outcome, and it is more visible than the dirt was.

There is also a maintenance argument that applies to neither difficulty nor risk. House washing works best on an annual cycle, because a year of growth comes off far more easily than three years of it. A property kept on that schedule is cheaper to maintain per visit than one washed occasionally, whoever does the work.

Where to go next

The tools and guides that pair with this page.

• House washing calculator — price a specific home, with SH dilution and job-profit tools.
• Roof cleaning cost — the natural companion sale on the same visit.
• Driveway pressure washing cost — the other half of most residential bundles.
• Estimate calculator — total a house-plus-driveway visit as one estimate.
• Quote template — the firm document to send once you have measured.
• Pressure washing pricing guide — the full 2026 method behind these rates.