Professional window cleaning in Ontario typically costs $120–$400, or roughly $3–$8 per pane. Exterior-only cleaning sits at the lower end; interior-plus-exterior costs more. Your price depends on the number of windows (panes), how many storeys your home has, and whether you add screen and track cleaning.
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Window Cleaning Cost by Home Size
Window cleaning is priced mainly by the number of panes and whether you want interior, exterior, or both. Home height matters too — upper-storey and hard-to-reach windows take longer and need more equipment. Here is what homeowners across Kitchener, Waterloo, Cambridge, and Guelph typically pay in 2026.
| Home size | Approx. panes | Exterior only | Interior + exterior | Notes |
|---|---|---|---|---|
| Small bungalow | 10–15 | $100–$150 | $150–$220 | Single storey |
| Average detached | 15–25 | $140–$220 | $220–$320 | Two storey |
| Large detached | 25–40 | $220–$320 | $320–$450 | High / hard-to-reach windows |
| Per pane (standard) | — | $3–$5 | $5–$8 | Standard double-hung or slider |
Rule of thumb: count your panes, then budget $3–$5 each for exterior-only or $5–$8 each for inside-and-out. Storeys and awkward access are what push a quote toward the top of the range.
Per-Pane Pricing Explained
Most professional window cleaners price per pane (each individual glass section), which is why an accurate count matters. A standard double-hung window usually has two panes (upper and lower sash); a large picture window may count as one big pane; and grids or divided-light windows are typically counted as a single pane rather than each little section. When you request a quote, a quick walk-around or a few photos lets a company give you an exact price rather than a rough estimate.
Pro Tip: Book window cleaning together with gutter cleaning or a pressure wash. Bundling exterior services in one visit almost always earns a package discount and saves you scheduling two separate appointments.
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Interior + Exterior vs Exterior-Only
The single biggest choice that affects your price is whether you want both sides of the glass cleaned. Exterior-only is the most popular mid-season service — it removes the pollen, rain spotting, and dust that dull your windows from outside, and it is the cheaper option. Interior-plus-exterior roughly doubles the surface and the time, so it costs more, but it is the right call for a spring or fall deep clean, after renovations, or before listing a home for sale.
Screens, Tracks & Add-Ons
A basic clean covers the glass. These optional extras are priced separately and are worth adding on the first visit of the season, when they hold the most dirt:
- Screen cleaning: $2–$4 per screen — removes trapped pollen and dust that dirties the glass again.
- Track & sill detailing: $2–$5 per window — clears the grime and dead bugs that collect in the frames.
- Hard water / mineral stain removal: $5–$15 per window for etched spotting from sprinklers or runoff.
- Skylights & high fixed panes: quoted individually because they need ladders or poles and extra time.
How Often Should Windows Be Cleaned?
Twice a year — typically spring and fall — keeps most Ontario homes looking their best. Spring clears winter grime and salt spray; fall removes summer pollen and dust before the windows are shut for the season. Homes near busy roads, active construction, or heavy tree cover may prefer quarterly exterior cleaning, while lightly-used windows can get by with a single annual clean.
What Affects Your Specific Price
Beyond pane count and interior-versus-exterior, a few factors move your quote within its range:
- Storeys & access: Upper-floor and hard-to-reach windows need ladders or water-fed poles and take longer.
- Window style: Casements, French windows, and heavily-divided grids take more time than simple sliders.
- Condition: Long-neglected glass with baked-on grime or paint overspray needs extra work.
- Add-ons: Screens, tracks, and hard-water treatment each add to the base price.
- Frequency: Repeat and maintenance customers often pay less per visit than a one-time deep clean.
D&D Home Services provides streak-free residential and commercial window cleaning throughout Kitchener, Waterloo, Cambridge, and Guelph. See our window cleaning service or get your free quote — we typically respond within one business day.
Frequently Asked Questions
How much does window cleaning cost in Ontario?
Most Ontario homeowners pay $120–$400 for professional window cleaning. A small bungalow runs about $100–$220, an average detached home $140–$320, and a large home $220–$450, depending on whether you choose exterior-only or interior-plus-exterior and how many windows you have.
How much does window cleaning cost per window or pane?
Expect roughly $3–$8 per pane. Exterior-only cleaning is usually $3–$5 per standard pane, while interior-plus-exterior runs $5–$8 per pane. Large fixed panes, high windows, and skylights are quoted individually because they take more time and equipment.
Is interior window cleaning extra?
Yes. Cleaning both sides roughly doubles the surface and the time, so interior-plus-exterior costs more than exterior-only. Many homeowners book exterior-only in mid-summer and add interiors during a spring or fall deep clean.
How often should windows be cleaned?
Twice a year is the standard for most Ontario homes — typically spring and fall. Homes near busy roads, construction, or heavy tree pollen may want quarterly exterior cleaning, while a simple annual clean is enough for lightly-used windows.
Do you clean screens and tracks too?
Yes, as optional add-ons. Screen cleaning is usually $2–$4 per screen and track-and-sill detailing about $2–$5 per window. These are worth adding on the first visit of the season, when screens and tracks hold the most built-up dirt and pollen.
Ontario Window Cleaning: 2026 Price Reference
- ✓ Small bungalow: $100–$220 depending on inside-and-out
- ✓ Average detached: $140–$320
- ✓ Large detached: $220–$450
- ✓ Per pane: $3–$5 exterior-only, $5–$8 inside-and-out
- ✓ Screens $2–$4 each · tracks $2–$5 per window
- ✓ Clean twice a year — spring and fall
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