North Star Window Cleaning
(303) 449-6446 Free estimate
A wide living-room window looking out at the Flatirons on a cloudless Boulder morning

01 / Boulder County · Family-owned

Windows inside and out, gutters and power washing — for Boulder homes, Front Range offices and buildings all the way up. Family-owned. On time. Done right the first time.

Get a free estimate (303) 449-6446

Clear. North Star Window Cleaning, Boulder County

Drag to clean the glass

02 / Services

Four ways to see the mountains again.

  1. 01

    Windows, inside & out

    Glass, frames, sills and tracks, by hand and squeegee. We work the inside with drop cloths and clean shoes, then the outside from ladder or pole. You get streak-free glass in every room, not just the ones guests see.

    Homes →
    A squeegee pulling a clean stripe across wet window glass
  2. 02

    High-rise & commercial

    Storefronts, offices and multi-story buildings, including lift work on downtown Boulder streets. Scheduled around your hours so your tenants and customers barely notice we were there.

    Commercial →
    A lift basket raised beside a downtown brick and glass building
  3. 03

    Gutter cleaning

    Pine needles, cottonwood fluff and spring hail grit, scooped out and flushed so downspouts run free before the next storm or the next freeze.

    Homes →
    Gloved hands clearing pine needles out of a roof gutter
  4. 04

    Power washing

    Siding, decks, patios, walkways and driveways brought back to their real colour. Pair it with windows and the whole house is done in one visit.

    Homes →
    A clean pressure-washed stripe across a flagstone patio

From porch to penthouse

On the ground

Porch.

Front doors, sidelights, the sliding door the dog presses its nose against every morning. Ground-floor glass done with the same care as the top floor.

A crew member cleaning a glass patio sliding door

Ladder

Second story.

Two-story homes, clerestories and the tall living-room windows that only show their dust when the low winter sun hits them.

A window cleaner on a ladder at the upper windows of a two-story home

Roofline

Gutters.

While we're up there: gutters cleared, roof-edge glass detailed, nothing left for the snow to freeze around.

A ladder against a pitched roofline with spruce trees behind

Lift

Penthouse.

Commercial and high-rise glass reached by lift, with the street permits and planning that downtown work requires.

A window cleaner working from a lift high on a building facade

Whatever the height, one crew.

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Before: a window clouded with hard-water spots and grime After: the same window, sparkling clean Before After

03 / The difference

Very dirty windows are our favourite kind.

Hard-water spots from sprinklers, construction dust, a winter of road grime on the street side. We clean glass that other people gave up on, and we clean the frames and sills while we're at it, because clean glass in a dirty frame still looks dirty.

04 / How a visit goes

Four steps. One clean house.

A uniformed crew unloading ladders from a work van
  1. 01

    Call or ask online

    Tell us about the house or building. Weekdays 8 to 5, we pick up.

  2. 02

    Free estimate

    We look at the job in person or from the details you send, and give you a clear price before any work begins.

  3. 03

    The crew arrives on time

    Uniformed, insured and bonded, with drop cloths for inside work and everything needed for outside.

  4. 04

    Walk the house

    Before we leave, look through every window with us. If a pane isn't right, we fix it on the spot.

5.0

From 37 reviews on Birdeye

What those reviews keep coming back to: dirty glass made clear, crews on time, and the details done.

  • Very dirty windows welcome.

    Every pane, both sides

  • On time, on the day we said.

    Weekdays 8 to 5

  • Frames and sills, not just glass.

    Attention to detail

  • A clear price before we start.

    Free estimate

  • Done right the first time.

    Insured & bonded
A Boulder home's windows glowing at golden hour

05 / Family-owned

A Boulder family business

North Star cleans windows across Boulder County, close enough to know which streets collect the worst road grime and which windows catch the low winter sun. We are still family-owned and still based on Commerce Street, and we still believe the job isn't done until you can't tell the glass is there.

Meet North Star →

06 / Where we work

Boulder to the plains. Denver to the peaks.

Boulder, Boulder County, Denver, the Front Range and mountain communities.

Homes and buildings across Boulder County, Denver and up and down the Front Range, plus the mountain communities above them. Not sure if you're on our map? Call — if there's glass, we'll talk.

(303) 449-6446

See it clearly.

(303) 449-6446 Get a free estimate

Mon–Fri 8:00 AM – 5:00 PM

Call Free estimate