Sonlight Window Cleaning has served Boulder homeowners and businesses for nearly five decades. From historic Mapleton Hill Victorians to modern Boulder Junction lofts, our crew delivers professional results backed by 350+ five-star reviews and a satisfaction guarantee on every job.
Boulder sits at 5,430 feet at the base of the Flatirons, where chinook winds, intense UV, and an active outdoor culture mean windows take a beating. The city's water is moderately hard (~80 ppm) and slightly alkaline, so sprinkler overspray and irrigation drift leaves visible spots quickly on south-facing glass.
Our crew works every Boulder neighborhood — the 1880s Victorians of Mapleton Hill, the bungalow-belt of Whittier and Goss Grove, the modern townhomes of Boulder Junction, the larger lots along Knollwood and Pine Brook Hills, and the master-planned community of Anthem Highlands in nearby Broomfield. We've earned long-term recurring contracts with HOAs, professional offices on Pearl Street, and Boulder-area property managers.
Sonlight Boulder services include interior + exterior window cleaning, screen removal and cleaning, gutter cleaning, pressure washing, soft wash, and solar-panel cleaning. We carry $2M general liability + workers' comp and back every job with a 24-hour satisfaction guarantee.
Pricing is per-property — based on your home's square footage, number of windows, stories, and accessibility. Here's a real example for Boulder:
Example: 1,900 sqft 2-story North Boulder home, 24 windows
Interior only
$180
Exterior only
$240
Both (most popular)
$370
Want exact pricing for YOUR home in Boulder? Get an instant quote in 30 seconds — no callback, no in-person estimate. For a deeper breakdown of what affects window cleaning prices, see our 2026 Denver pricing guide.
Downslope chinook winds out of the Flatirons can hit 80+ mph and carry grit from the foothills onto west-facing windows. Cleans done in the windy months don't hold as long — we recommend post-chinook touch-ups for properties on the foothills edge.
After major Front Range wildfire events (Marshall Fire, NCAR Fire, Cameron Peak), Boulder windows often need an extra cleaning to remove fine ash residue. We provide post-fire and post-smoke cleaning at standard pricing — no surcharge.
Boulder Water averages ~80 ppm hardness with pH ~7.8. Sprinkler systems on the south and west of homes can leave mineral deposits on windows within one summer if not cleaned annually.
We've worked every part of Boulder — here's what to expect in your area.
1880s Victorians with original glass; hand-detail only — no power tools.
Student rentals and Greek houses; fast turnover service for landlords.
Bungalow-belt homes with original wood storms; rebed and reset every spring.
Older homes with mature trees — heavy pollen on east-facing windows.
Modern condos and lofts with industrial-height windows.
Mix of 1950s ranches and new infill; flat lots, easy access.
Table Mesa neighborhoods with Flatirons views; west-facing windows hit hardest by chinook winds.
Foothill homes with steep terrain — water-fed poles and rope access.
1960s ranches with 1-story access; quick straightforward cleans.
Newer subdivisions; HOA-coordinated recurring service common.
Real Sonlight crew on real Front Range jobs — no stock photos. Same crew that will show up at your Boulder home or business.
Complete window cleaning inside and out, including sills and frames.
Learn more →Screen removal, washing, and reinstallation included with full-service cleans.
Learn more →Professional gutter and downspout cleaning to prevent water damage.
Learn more →Exterior surfaces, driveways, patios, and siding cleaned and restored.
Learn more →Safe cleaning to restore panel efficiency. Dust reduces output up to 25%.
Learn more →Low-pressure exterior wash for stucco, siding, decks, and fences.
Learn more →We're routinely in Boulder's neighboring communities — same crew, same pricing structure, same satisfaction guarantee. Listed by distance from Boulder:
Window Cleaning in Superior
7 miView Superior pricing & FAQs →
Window Cleaning in Louisville
8 miView Louisville pricing & FAQs →
Window Cleaning in Lafayette
10 miView Lafayette pricing & FAQs →
Window Cleaning in Broomfield
12 miView Broomfield pricing & FAQs →
Window Cleaning in Erie
12 miView Erie pricing & FAQs →
Most Boulder homes range $200–$600 for full-service. A 1,900 sqft 2-story home in NoBo or Newlands runs about $370 for interior + exterior with screens. Get an instant exact price on our website.
Every Boulder neighborhood: Mapleton Hill, University Hill, Whittier, Goss Grove, Newlands, NoBo, Boulder Junction, Table Mesa, Pine Brook Hills, Knollwood, Frasier Meadows, Martin Acres, Gunbarrel, and east Boulder. We also serve Louisville, Lafayette, Superior, and Erie.
Yes. We bring water-fed poles up to 4 stories and rope-descent gear for taller mountain homes. Our crew is OSHA-compliant for rope work and we have a $2M liability policy for foothill access jobs.
Twice per year is the baseline — late May (after pollen) and October (before the holidays). Foothill homes with chinook exposure or properties downwind of recent wildfires benefit from a third cleaning in early winter.
Yes. We've cleaned hundreds of homes after the Marshall Fire and other Front Range fire events. Standard pricing — no smoke-cleaning surcharge. Same-week scheduling for affected homes when possible.
Yes. Pearl Street storefronts, office buildings around 30th Street and Foothills Parkway, HOA common areas, and multi-unit residential. Recurring contracts at a 10–15% discount vs. one-time pricing.
Yes. We handle move-in/move-out cleans on University Hill rentals, student housing complexes, and apartment turn-overs across Boulder. Property managers get standardized pricing for repeatable work.
Yes. $2M general liability + Colorado workers' comp. Certificate of Insurance emailed to HOA property managers and commercial brokers on request, usually within hours.
Want more answers? See our guide to how often Colorado windows need cleaning or our hard-water stain removal guide.
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