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King County

Window Cleaning in King County, WA

Veteran-owned window cleaning across King County, from a crew based right here in Snohomish.

Veteran owned & operated · Licensed & insured

The red Wonderboy pickup truck parked in front of evergreen trees

King County appointments are scheduled case-by-case based on drive time from our Snohomish base. Ask when you request a quote and we'll let you know.

Key facts

Serving
All of King County
From our base
About 15 miles from Snohomish
Quotes
Free, no obligation

Window care across King County

Much of our King County work is on the Eastside and along Lake Washington and Lake Sammamish, where homes are built around big view windows. North King County, including Shoreline, Kenmore, and Bothell, also sits in the Puget Sound Convergence Zone, so glass there gets rained on more often.

Most King County homes get very soft Seattle water (about 20–30 mg/L), so rain-borne grime is the usual problem. The exception is Redmond east of the Sammamish River, where medium-hard well water can leave sprinkler spots.

Kenmore

Kenmore wraps the entire north shore of Lake Washington at the mouth of the Sammamish River. Much of it was built as an early post-war suburb in the 1950s and '60s, and Saint Edward State Park preserves more than half a mile of undeveloped shoreline.

Kenmore's water comes from Northshore Utility District (soft Seattle Tolt water), and the city sits inside the Puget Sound Convergence Zone, so rain spotting is more common than mineral scale.

Shoreline

Shoreline sits between Seattle and the Snohomish County line. Richmond Beach meets Puget Sound at a steep bluff, and much of the city's housing dates to its 1950s boom, when it was the fastest-growing area in the Seattle metro. Two light rail stations opened in 2024.

Shoreline gets soft Seattle water and sits in the convergence zone. A single convergence-zone snowstorm dropped 3.5 inches here on April 18, 2008.

Woodinville

Woodinville lies along the Sammamish River east of Bothell, with waterfront parks, a wine district of roughly 130 wineries and tasting rooms, and industrial areas along SR 522. It incorporated in 1993 and has grown about 9.8% since 2020, per OFM.

Water comes from the Woodinville Water District (soft Seattle Tolt water). The city is in the convergence zone's path; a 2008 convergence-zone snowstorm dropped 6.5 inches here.

Kirkland

Downtown Kirkland sits on Lake Washington's Moss Bay, and the shoreline continues to Juanita Bay and Houghton, with thousands of condos and apartments built since the 1990s. Kirkland ranked among Washington's top 10 cities for numeric growth in 2025–26 (OFM).

Kirkland's very soft Tolt water rarely leaves mineral scale, so most of what builds up on its windows is rain-borne dirt, pollen, and construction dust.

Redmond

Redmond sits at the north end of Lake Sammamish along the Sammamish River, with homes spreading north and west of the lake. It has grown about 13.7% since 2020 (OFM), with light rail and new apartments downtown and in Overlake.

Its water is split. The city describes groundwater used east of the Sammamish River as medium-hard (about 90 mg/L), while Tolt water is very soft (about 20 mg/L). On the well-water side, sprinklers can leave white mineral spots on glass.

Bellevue

Bellevue sits between Lake Washington and Lake Sammamish. Its name comes from the French 'belle vue,' and hilltop and lakefront homes are built around the views. The city grew from farmland into a suburb after the floating bridges opened, and downtown is now a high-rise core.

Bellevue's water is very soft (the city puts it around 25 mg/L), so window grime here is usually rain-borne dirt and pollen, plus construction dust near downtown and the BelRed/Spring District redevelopment.

Communities we serve

Cottage LakeUnion Hill–Novelty HillInglewood–Finn Hill

Near Lake Washington, Lake Sammamish, Marymoor Park, and everywhere in between.

Local know-how

What's hard on windows in King County.

Lakefront view glass

Lake Washington and Lake Sammamish homes are built around big panes that show every spot.

Mostly soft water, with one exception

Seattle water is very soft, but Redmond's east-side wells run medium-hard, so spot removal is sometimes needed there.

Services

Our services in King County.

  • 01Core

    Window Cleaning

    Interior and exterior glass cleaned streak-free, with frames and sills detailed. Pure, deionized water on the outside so glass dries spot-free.

    • — Exterior glass cleaned with purified water or scrubber & squeegee
    • — Interior glass cleaned by hand, with care for floors and furnishings
    • — Frames and sills wiped down
    Learn more
  • 02Core

    Commercial Window Cleaning

    Storefronts, offices, and low-rise buildings up to three stories, on a one-time or recurring schedule that fits your business hours.

    • — Storefront glass and entry doors, inside and out
    • — Fingerprints and smudges on doors, handles, and display windows
    • — Exterior glass on low-rise buildings up to three stories
    Learn more
  • 03Core

    Window Screen Cleaning

    Dust, pollen, and cobwebs washed out of screen mesh and frames, so fresh air comes in and grime stops blowing back onto clean glass.

    • — Screens removed and kept organized so each goes back where it belongs
    • — Mesh cleaned on both sides
    • — Frames wiped down
    Learn more
  • 04Core

    Window Track Detailing

    Tracks scrubbed, vacuumed, and wiped down, so windows slide smoothly, weep holes drain, and mildew doesn't get a foothold.

    • — Loose debris vacuumed out of window and slider tracks
    • — Tracks scrubbed to lift caked-on dirt and mildew
    • — Tracks and sills wiped clean
    Learn more
  • 05Specialty

    Window Screen Repair

    Ripped, loose, or faded screens get new mesh and spline, so they look and work like new for less than replacement screens.

    • — Old or damaged mesh removed
    • — New screen mesh installed and tensioned
    • — New spline where needed
    Learn more
  • 06Specialty

    Hard Water Stain Removal

    Sprinkler spots, mineral deposits, and early etching removed from glass, because restoring glass is almost always cheaper than replacing it.

    • — Inspection to tell mineral deposits apart from etching or other damage
    • — Test area so you can see the expected result first
    • — Mineral deposit removal and glass restoration
    Learn more

Also available in King County: skylights, post-construction cleanup, Christmas light installation, and the Protective Plan.

  • Free, no-obligation quotes.
  • 100% satisfaction guarantee
  • Veteran-owned & operated

Good questions

King County window cleaning FAQ.

Don't see your question? Text us and a real person will answer.

Does Wonderboy serve King County?

Yes. We serve north and Eastside King County, including Bothell, Kenmore, Shoreline, Woodinville, Kirkland, Redmond, and Bellevue, on a case-by-case basis because of drive times from our Snohomish base. Request a quote with your address and we'll confirm.

Do you serve Richmond Beach and Innis Arden?

Yes. They're part of our King County service area. King County appointments are scheduled case-by-case based on drive time, so ask when you request a quote.

Do you clean winery and tasting room windows in Woodinville?

Yes. We clean storefronts and low-rise commercial buildings, one-time or on a recurring schedule. Woodinville visits are scheduled case-by-case, so ask when you request a quote.

Is Redmond's water hard?

Part of it. The City of Redmond describes the groundwater it uses east of the Sammamish River as medium-hard (about 90 mg/L), while its Tolt supply is very soft (about 20 mg/L). Homes on the harder water are more likely to see sprinkler spots on windows.

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