How much does window cleaning cost in Denver?
Real numbers from jobs we quote every week across Littleton, Highlands Ranch, Lakewood, Castle Rock, and the rest of the south metro — plus exactly what moves the price up or down.
The short answer
Most Denver-metro homeowners pay $180 to $340 for a full exterior window clean, and $330 to $560 when interiors are included. That works out to roughly $6–$10 per pane outside and $12–$18 per pane inside and out, with a service minimum near $140.
Cost by home size
Ranges below reflect what we actually quote in the south Denver metro. Pane count matters far more than square footage.
| Home type | Typical panes | Exterior only | Inside & out |
|---|---|---|---|
| Small ranch / townhome (1 story) | 10–18 panes | $140 – $200 | $240 – $330 |
| Average suburban home (2 story) | 20–35 panes | $180 – $340 | $330 – $560 |
| Large home (2–3 story) | 35–60 panes | $340 – $600 | $580 – $950 |
| Estate / custom build | 60+ panes | $600+ | $1,000+ |
Add-ons and what they run
Hard-water stain restoration
$8 – $20 per panePriced per affected pane, not the whole house. Sprinkler-facing glass usually needs it.
Screen deep clean
IncludedScreens come out, get hand-rinsed and dried, and go back on every job.
Track and sill detailing
$3 – $6 per windowVacuumed and wiped — worth it on interiors after a winter.
Skylights
$15 – $40 eachDepends on pitch and whether we can reach from a pole or need roof access.
Gutter cleaning bundled
10% off bothSame visit, one trip charge, less time on your calendar.
What changes your price
Pane count, not square footage
Reputable cleaners price off how many panes of glass there are and how hard each one is to reach. A 1,600 sq ft home with 40 small divided-lite windows costs more than a 3,000 sq ft home with 18 big picture windows.
Stories and access
Second and third story glass takes pole systems or ladder setup and adds time. Steep landscaping, window wells, decks, and fenced dog runs all slow access — and access is what you're really paying for.
Interior or exterior only
Interiors roughly double the pane count and add furniture moving, drop cloths, and shoe covers. Most Denver homeowners do exterior twice a year and interiors once.
Hard water and Colorado minerals
Front Range water is hard. Sprinkler overspray leaves calcium that a normal wash won't lift once it etches. Restoration is a separate labor-heavy step and should be quoted per pane, not hidden in the base price.
Frequency
Glass cleaned every six months is faster to clean, so recurring customers pay less per visit than a first-time deep clean on windows that haven't been touched in three years.
Time of year
Spring and pre-holiday fall are peak. Booking in mid-summer or late winter often gets you a faster slot and occasionally a better rate.
When a low quote costs you more
Red flags in a cheap bid
- No proof of liability insurance
- A number thrown out with no questions about pane count, stories, or screens
- Screens "not included" or left dirty in the grass
- Ladders leaned on gutters and siding
- Dish soap and a squeegee instead of pure water on upper glass
What a fair quote includes
- A written price up front — most of ours are done over the phone using satellite and street imagery
- Screens removed, washed, dried, reinstalled
- Frames, sills, and tracks wiped down
- Pure-water pole reach for upper stories
- A walk-through with you before the crew leaves
Window cleaning cost FAQs
How much does window cleaning cost in Denver?
Most Denver-metro homes pay $180 to $340 for a full exterior clean, and $330 to $560 when interiors are included. Small townhomes come in under $200; large custom homes with 60+ panes run past $600.
Is window cleaning priced per window or per hour?
Per pane is the standard and the fairest to you, because it's fixed before work starts. Hourly pricing gives the cleaner the upside on a slow day. Ask any company for a written per-pane or flat quote before they begin.
How much is window cleaning per window?
In the Denver area, expect roughly $6 to $10 per pane for exterior only and $12 to $18 per pane for inside and out, with a service minimum around $140.
Why is hard water removal extra?
A standard wash removes dirt sitting on glass. Mineral scale is bonded to the glass and has to be dissolved and polished off pane by pane — it can take longer to restore four spotted windows than to wash the rest of the house.
How often should windows be cleaned in Colorado?
Twice a year for exteriors is the sweet spot along the Front Range. Homes with sprinklers hitting the glass, near open space, or in the foothills usually go three times.
Do you charge for a quote?
No. Quotes are free, and we give you the number before we start — no surprise line items at the end.
Pricing in your city
Want your exact number?
Send us your address and a rough pane count and we'll get you a firm price — usually same day.