Instant Online Quote
See your price range in about a minute, no waiting on a callback.
Fully Insured & Guaranteed
Fully insured on every job, backed by The Sunshine Guarantee.
Pure Water, No Chemicals
Deionized water means spot-free glass, with nothing harsh near your kids, pets, or garden.
Local to Boulder
Based right here, not driving in from Denver. We're minutes away.
Neighbors Talking
What Homeowners Are Saying
"Had the outside and inside windows of my house cleaned last week and the glass became so crystal clear it was literally as if the outside was in. Still looks good. No smudges, no streaks! Sills and tracks were cleaned from dirt and debris as well. Greg was thorough and showed great attention to detail. He was careful not to disturb my ground plantings as he worked on the windows above. Truly recommend using Sunshine Window Works to get that crystal clear finish on your windows."
"Greg did an amazing job on my windows. He was timely, professional, and detail oriented with everything from the screens to the glass. It's like a whole new world when I look outside now. So much brighter! Highly recommend Sunshine Window Works."
"Greg did an amazing job on our windows, inside and outside, everything looks crystal clear. You can tell he takes real pride in his work: thorough, detail-oriented, and made sure everything was spotless before he left. Friendly, professional, and easy to work with. We'll definitely be calling him again!"
Our Services
What We Take Care Of
The Sunshine Guarantee
Happy, or we make it right.
We don't pack up until your glass is streak- and spot-free, and if you spot anything we missed within 7 days, we'll come back and re-clean it at no charge.
Satisfaction guaranteed
Tell us within 7 days and we'll come back to make it right.
Spot-free, pure-water clean
Deionized water means no streaks, spots, or chemical residue.
No charge, no hassle
Making it right never costs you anything extra.
Covers the quality of our cleaning, not new spotting from weather, sprinklers, or construction after we leave.
Boulder, Born and Based
Made for the Front Range
Boulder is famous for 300 days of sunshine. All that light shows every streak, speck of pollen, and film of Flatirons dust on your glass. Then there's spring cottonwood, chinook winds, and summer construction dust. Colorado windows work harder than most.
Sunshine Window Works is locally owned and based right here in Boulder. When you call, you get the person doing the work, not a call center, and a neighbor who knows exactly what Colorado weather does to windows.
How We Work
The Sunshine Standard
Clear quotes, no surprises.
The price we quote is the price you pay. Anything unexpected gets a conversation before it gets a charge.
Careful work, start to finish.
Drop cloths inside, plants and furniture protected outside, gates latched and doors locked when we leave.
Done means you're happy.
We walk the job with you before we call it finished. If a pane isn't right, we fix it on the spot.
Where We Work
Serving Boulder and the Front Range
We serve Boulder and the Front Range, plus a few Northwest Denver neighborhoods including the Highlands, Berkeley, Tennyson, and Sloan's Lake. Not sure if you're in range? Just ask. The answer is usually yes.
- Boulder
- Louisville
- Lafayette
- Superior
- Longmont
- Erie
- Broomfield
- Westminster
Good Questions
Window Cleaning Questions, Answered
How much does window cleaning cost in Boulder?
Most homes fall in a range based on window count, stories, and interior/exterior scope. Every quote is custom and free. Tell us about your home and you'll have a number within one business day.
How often should windows be cleaned in Colorado?
For most Front Range homes, cleaning twice a year keeps glass clear year-round: spring after pollen season, and fall before the light gets low. Homes near open space or construction may want a third.
Do you clean second-story and hard-to-reach windows?
Yes. We use a purified water-fed pole system that safely reaches upper stories from the ground, plus traditional techniques where they do the job better.
Do I need to be home?
For exterior-only service, no. Just leave gates unlocked. For interior glass, someone needs to let us in; we'll confirm timing the day before.
Does solar panel cleaning actually help?
Yes. Dust and grime cut panel output more than most owners realize. A purified-water rinse restores it without scratching coatings or voiding warranties.
How do I choose a good window cleaning company in Boulder?
Look for four things: proof of insurance, purified-water equipment (it dries streak-free and reaches upper stories safely), a firm written quote before work starts, and a walkthrough at the end so nothing gets called done until you agree it is. Sunshine Window Works is built around all four: locally owned, insured, and based right here in Boulder.
Ready for Clearer Glass?
Free quotes within one business day. No pressure, no surprises.