Sonlight Window Cleaning serves every Denver neighborhood with professional residential and commercial window cleaning. With 10,000+ jobs completed and 350+ five-star reviews since 1978, we are Denver's most trusted window-cleaning company. Get a real, firm price for your address in 30 seconds.
Denver's 300+ days of sunshine, mile-high altitude, and alkaline tap water make clean windows essential — and they make dirty windows show up fast. Pollen from cottonwoods, dust from the South Platte basin, and hard-water spots from sprinkler overspray all conspire to cloud the views of the Front Range that drew you here in the first place.
Our 22-person crew has worked every Denver neighborhood, from 1880s row houses in Capitol Hill and Curtis Park, to bungalow-belt streets in Wash Park and Berkeley, to the modern infill of Stapleton (Central Park) and Green Valley Ranch. We treat a 1920 Denver Square the same way we treat a 2020 Highlands custom: walk the property, count windows, write a clean estimate, then do exactly what we said we would.
Sonlight Denver services include interior + exterior window cleaning, screen removal and washing, sill and frame detail, gutter cleaning, pressure washing, soft wash on stucco and siding, and solar-panel cleaning. Every job is backed by a 24-hour satisfaction guarantee — if anything looks off after we leave, we come back at no charge.
Pricing is per-property — based on your home's square footage, number of windows, stories, and accessibility. Here's a real example for Denver:
Example: 1,800 sqft 2-story Wash Park bungalow, 22 windows, screens included
Interior only
$175
Exterior only
$225
Both (most popular)
$350
Want exact pricing for YOUR home in Denver? 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.
Denver Water averages 50–80 ppm hardness — soft by national standards but the alkalinity is high (pH ~8.0) and that's what etches glass. South-facing windows hit by sprinkler overspray bake-in mineral spots within a single summer.
Late-May through mid-June, cottonwood seeds stick to freshly cleaned glass within hours. We typically schedule major Denver-metro cleans for late June after the fluff drops.
Homes within a half-mile of I-25 or I-70 see a fine red-brown grit on west and north exposures from sustained truck traffic. Quarterly cleaning is the only practical defense for these properties.
We've worked every part of Denver — here's what to expect in your area.
Late-1800s Victorians, original wood frames; we hand-detail rather than power-wash these to protect the glazing.
Bungalows and 1920s tudors with rear storm-windows we strip and rebed each spring.
Mid-century moderns and mansions with floor-to-ceiling windows facing the south Platte basin — extra exposure to pollen and dust.
Mix of 1890s row homes and modern townhomes; we route a Highlands day weekly during peak season.
Wide tree-lined streets mean heavy spring pollen on east-facing glass.
Newer construction with wider window casements; full-service cleans average 32-50 panes.
DIA flight path puts a fine grit on west-facing windows — we recommend quarterly cleaning here.
Larger lots and mid-century picture windows; we bring water-fed poles for the second-story.
Lofts with industrial-height windows — interior squeegee work + exterior rope-access where needed.
Lake-adjacent homes get extra mineral spotting from the south wind off the water.
Classic Denver bungalows; storm-window service common through April.
Many rentals — fast turn-times for landlords and HOA boards.
Real Sonlight crew on real Front Range jobs — no stock photos. Same crew that will show up at your Denver 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 Denver's neighboring communities — same crew, same pricing structure, same satisfaction guarantee. Listed by distance from Denver:
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Most Denver residential window cleaning jobs range from $200 to $600. A typical 1,800 sqft 2-story home in Wash Park or Cherry Creek runs about $350 for full service (interior + exterior, screens included). Get an exact instant quote on our website in 30 seconds — no call-back required.
Every neighborhood inside Denver city limits and most of the metro: Capitol Hill, Washington Park, Cherry Creek, Highlands, LoHi, Park Hill, Stapleton (Central Park), Green Valley Ranch, Hilltop, Crestmoor, LoDo, RiNo, Sloan's Lake, Berkeley, Tennyson, University Park, DU area, Congress Park, Hale, Mayfair, Montclair, Lowry, Westwood, and more.
Twice per year is the right baseline for most Denver homes — once after spring pollen drops (late May or early June after cottonwood fluff) and once before the holidays (October). If you're near I-25, I-70, DIA, or have sprinklers that hit windows, plan on quarterly cleaning to prevent permanent etching.
Denver Water is moderately hard (50–80 ppm) but very alkaline (pH ~8). Alkaline water etches the silica in glass faster than acidic water of the same hardness. Combined with 300+ days of sun, mineral deposits get baked into the surface. We use a purified-water rinse system that prevents new spotting on every clean.
Yes. We clean offices, storefronts, HOA common areas, multi-unit residential, and high-rises throughout Denver. We carry $2M general liability + workers' comp, are OSHA-compliant for rope-descent and bosun work, and offer recurring maintenance contracts at a discount.
Yes. We re-screen torn frames, replace bent spline, and ship out for full frame fabrication when needed. Most simple re-screens are $25–$45 per window. We can quote screen work alongside your window cleaning estimate.
Yes. We run water-fed poles up to 4 stories and rope descent for taller buildings. For most 2-story Denver homes the upper-floor exterior is included in the standard exterior price — there's no upcharge for height on a typical residential job.
Yes. We carry $2M general liability + Colorado workers' comp. We can email a Certificate of Insurance to your HOA, property manager, or commercial broker before service — no charge.
Want more answers? See our guide to how often Colorado windows need cleaning or our hard-water stain removal guide.
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