Sonlight Window Cleaning is the largest window cleaning company in Colorado and has completed over 41,000 jobs across Denver, Boulder, Fort Collins, and Colorado Springs since 1978. Our 40+ employee crew handles everything from a 1900s Capitol Hill bungalow to a brand-new Backcountry build with the same care and the same satisfaction guarantee.
Get an Instant QuoteQuick answer
Residential window cleaning means a full clean of every visible window, inside and out, including screens, sills, and frames.
Enter your address. Our autoquoter pulls property details from public records and returns a real, firm price in seconds. No callback, no in-home estimate.
Choose any open day on our calendar in the next 14 days. Same-day booking cuts off at 6 PM the prior evening. SMS + email confirmation arrives instantly.
Our crew shows up within the time window, in branded trucks with $2M liability and workers' comp. The lead tech walks the property with you (if home) before starting.
Interior windows are squeegeed dry with hand-towels and finished by hand. Exterior is cleaned with a purified-water rinse system that prevents new mineral spotting.
We walk the home with you (or send photos if you're not there). Pay by card, ACH, or check. If anything looks off within 24 hours, we come back free.
Every job is priced individually for the property. These are ballpark ranges to set expectations. The autoquoter on our home page returns an exact firm price for any address in our service area in 30 seconds.
| Profile | Price range |
|---|---|
| Single-story 1,200 sqft home, ~14 windows | $200–$280 |
| 2-story 1,800 sqft home, ~22 windows | $300–$400 |
| 2-story 2,400 sqft home, ~30 windows | $400–$500 |
| Larger custom home (3,500+ sqft) | $500–$800+ |
| Hard-water stain removal add-on | $50–$200 |
| Screen repair / re-screening | $25–$45 per window |
Colorado's mile-high+ altitude means UV exposure is 25-40% stronger than at sea level. Mineral deposits etch into window glass faster, and window seals fail sooner. Twice-yearly professional cleaning is the practical baseline, quarterly for west-facing exposures or homes near sprinkler overspray.
Front Range water averages 50–150 ppm hardness depending on city (Denver Water ~70 ppm, Colorado Springs Utilities ~125 ppm). The water is also slightly alkaline (pH ~8) which etches the silica in glass faster than acidic water of the same hardness.
Spring pollen (cottonwood, pine) and June cottonwood fluff are the heaviest contamination periods. Most Front Range homeowners book a major clean in late May or early June after pollen drops, then a second in October before the holidays.
Most 2-story Colorado homes (1,800–2,400 sqft, ~22–30 windows) take 2–3 hours with a 2-tech crew. Larger custom homes can run 4–6 hours. We'll give you a specific time window when we confirm the booking.
No. As long as we can access exterior gates, side yards, and any rooms you want cleaned interior, we're fine. We text you when the crew arrives and when the job is complete with photos. Most of our recurring customers are not home during the appointment.
Full service = interior + exterior + screens + sills + frames. Exterior-only = exterior surfaces only, no interior access required. Exterior-only runs about 65-75% of the full-service price and is faster to schedule. Most customers do full service in spring and exterior-only in fall.
Yes. We use water-fed pole systems that reach up to 4 stories, and rope-descent gear for taller buildings. There's no upcharge for height on a typical 2-story residential job, height pricing only kicks in for homes over 3 stories or with bosun-chair access requirements.
We monitor weather closely. If conditions are unsafe, we'll reschedule for the next available slot (usually within 2-4 days) at no charge. We always give at least 24 hours' notice on weather-related reschedules.
Yes, for stains less than ~6 months old. Older stains may have etched into the glass, in which case we use specialized cerium-oxide polish (extra charge). For severely etched glass, replacement is the only fix. See our hard-water stain removal guide for the full diagnostic.
Yes. $2M general liability + Colorado workers' comp. Certificate of Insurance available on request, usually emailed within hours.
Cancel any time up to 24 hours before the appointment at no charge. Inside 24 hours we ask for a $50 short-notice fee to cover crew scheduling, but we'll waive it for unavoidable events (illness, family emergency, weather).
Sonlight provides residential window cleaning across Colorado's Front Range, the Albuquerque and Santa Fe areas of New Mexico, and greater Los Angeles: pick your city for local pricing examples, FAQs, and example homes:
Window Screen Repair & Re-screening
View Window Screen Repair & Re-screening details →
Gutter Cleaning
View Gutter Cleaning details →
Soft Wash House Washing
View Soft Wash House Washing details →
How Much Does Window Cleaning Cost in Denver? (2026 Pricing Guide)
Read on the blog →
How Often Should You Clean Your Windows in Colorado?
Read on the blog →
Professional vs. DIY Window Cleaning: Cost, Time & Results Compared
Read on the blog →
Hard Water Stain Removal on Denver Windows: Causes & Solutions
Read on the blog →
Get your free quote in 30 seconds.
Get Instant QuoteOr call anytime: 303-990-2878