62/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 126 Google reviews, listed on Google as “Window cleaning service”.
Best Window Cleaners in Longmont, CO (2026)
66 window cleaners ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Longmont: BrightSide Home Services, CR Score 62/100; 5.0★ from 126 Google reviews; open 24/7.
- 7
Best for emergencies (open 24/7): Street Shine Window Cleaning, posts 24/7 hours; ranked #7 of 66.
- 29
Most-reviewed: Dan's Window Cleaning Lafayette, Colorado., 423 Google reviews at 4.9★, the most of 66 ranked; ranked #29.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
66 Longmont window cleaners are ranked here by CR Score, from ten published factors. 9 are open 24/7, 42 open Saturdays and 25 open Sundays, based on posted hours. The median Google rating is 5.0★ across 66 rated businesses.
Top 10 window cleaners in Longmont at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | BrightSide Home Services | 62 | 5.0★ (126) | Fort Collins, 10 mi away | 24/7 | Overall |
| 2 | Reveal Glass Co. | 62 | 5.0★ (35) | Longmont | Sat · Sun | — |
| 3 | Zenith Window Cleaning | 62 | 5.0★ (179) | Longmont | — | — |
| 4 | Super Cleaning Bros | 61 | 5.0★ (219) | Boulder, 8 mi away | Sat | — |
| 5 | Colorado Window Cleaning | 60 | 5.0★ (101) | Longmont | — | — |
| 6 | Rallo's Cleaning, Ltd. | 60 | 5.0★ (107) | Berthoud, 10 mi away | Sat · Sun · Evenings | — |
| 7 | Street Shine Window Cleaning | 59 | 5.0★ (65) | Boulder, 13 mi away | 24/7 | Emergencies |
| 8 | See Far Window Cleaning | 59 | 5.0★ (70) | Fort Collins, 13 mi away | 24/7 | — |
| 9 | Wipe my Glass window cleaning/ Longmont, CO | 59 | 5.0★ (11) | Longmont | Sat · Sun | — |
| 10 | The Magic Fairy House & Office Cleaning Services | 59 | 4.9★ (103) | Boulder, 12 mi away | Sat · Sun | — |
The 66 best window cleaners in Longmont, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Longmont
62/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “Window cleaning service”.
Based in Longmont
62/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 179 Google reviews, listed on Google as “Window cleaning service”.
Based in Boulder, 8 mi away
61/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 219 Google reviews, listed on Google as “Window cleaning service”.
Based in Longmont
60/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 101 Google reviews, listed on Google as “Window cleaning service”.
Based in Berthoud, 10 mi away
60/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 107 Google reviews, listed on Google as “Window cleaning service”.
Based in Boulder, 13 mi away
59/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 65 Google reviews, listed on Google as “Window cleaning service”.
Based in Fort Collins, 13 mi away
59/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 70 Google reviews, listed on Google as “Window cleaning service”.
Based in Longmont
59/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Window cleaning service”.
Based in Boulder, 12 mi away
59/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 103 Google reviews, listed on Google as “Window cleaning service”.
Based in Boulder, 13 mi away
59/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 47 Google reviews, listed on Google as “Window cleaning service”.
Based in Boulder, 3 mi away
59/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 28 Google reviews, listed on Google as “Window cleaning service”.
Based in Denver, 1 mi away
58/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Window cleaning service”.
Based in Longmont
58/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Window cleaning service”.
Based in Longmont
58/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Window cleaning service”.
Based in Aurora, 1 mi away
58/100CR ScoreRanked #16 because of its Google rating and review volume: 4.7★ from 205 Google reviews.
Based in Fort Collins, 6 mi away
58/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 43 Google reviews, listed on Google as “Window cleaning service”.
Based in Boulder, 14 mi away
57/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 75 Google reviews, listed on Google as “Window cleaning service”.
Based in Boulder, 7 mi away
57/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Window cleaning service”.
Based in Boulder, 12 mi away
57/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 45 Google reviews, listed on Google as “Window cleaning service”.
Based in Highlands Ranch, 13 mi away
57/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 48 Google reviews, listed on Google as “Window cleaning service”.
#22 Shine of Boulder
Based in Boulder, 8 mi away
57/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 39 Google reviews, listed on Google as “Window cleaning service”.
Based in Boulder, 12 mi away
57/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Window cleaning service”.
Based in Boulder, 14 mi away
57/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 22 Google reviews, listed on Google as “Window cleaning service”.
Based in Longmont
57/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Window cleaning service”.
Window cleaners ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 66 ranked window cleaners here; the rest are on their profiles.
Also serving Longmont
20 more window cleaners within 15 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| 5280 Window Washing | 5.0★ (1) | 9 mi |
| Academy Window Cleaning | 5.0★ (2) | 14 mi |
| Ace Window Cleaning Inc | 5.0★ (1) | In Longmont |
| Apollo Cleaning Service LLC | In Longmont | |
| B's Glass Services | 5.0★ (2) | 12 mi |
| Bondedbuildingcleaning | In Longmont | |
| Boulder Window Cleaning | In Longmont | |
| Clear Vision Professional Window Cleaning | 5.0★ (2) | 12 mi |
| Elite Junk Removal and Pressure Washing LLC | In Longmont | |
| Evergreen Window Cleaning | In Longmont | |
| Foothills Windows and Gutters | 5.0★ (2) | 12 mi |
| Grant man window cleaning llc | In Longmont | |
| Hands-Off Home Services | 8 mi | |
| J4U Cleaning Service | 5.0★ (1) | 8 mi |
| John Baldwin Window Cleaning, Inc. | 5.0★ (1) | 14 mi |
| Kopion Co. Window Cleaning | In Longmont | |
| Metropolis Window Cleaning | In Longmont | |
| Scout Cleaning | 4.0★ (2) | 12 mi |
| Spruce | 5.0★ (2) | 8 mi |
| Vanish Window Washing | 1.0★ (1) | 10 mi |
How we ranked Longmont window cleaners
We scored 66 Longmont window cleaners on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 3, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Longmont data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
Window cleaners in Longmont: frequently asked questions
Who is the best window cleaner in Longmont?
By CR Score, the highest-ranked window cleaner in Longmont, CO is BrightSide Home Services with a CR Score of 62/100. It has 5.0★ from 126 Google reviews. It is open 24/7. Reveal Glass Co. (#2) and Zenith Window Cleaning (#3) follow. We ranked 66 window cleaners on ten factors, last updated November 3, 2026.
How many window cleaners are there in Longmont?
ContractorsRanked ranks 66 window cleaners serving Longmont, CO. 10 of them are based in Longmont; the rest serve it from nearby towns. Another 20 within 15 mi are listed but not ranked yet. Counts are as of November 2026.
Which window cleaners in Longmont are open 24/7?
9 ranked window cleaners in Longmont post 24/7 hours. The highest-ranked are BrightSide Home Services (#1), Street Shine Window Cleaning (#7) and See Far Window Cleaning (#8). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which window cleaners in Longmont work on weekends?
42 of 66 ranked window cleaners post Saturday hours and 25 post Sunday hours. The highest-ranked open Saturdays are BrightSide Home Services (#1), Reveal Glass Co. (#2) and Super Cleaning Bros (#4). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Longmont window cleaners have?
The median Google rating among 66 rated window cleaners in Longmont is 5.0★, with a median of 22 reviews. Dan's Window Cleaning Lafayette, Colorado. has the most, 423 reviews, and ranks #29. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank window cleaners?
Each window cleaner gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do window cleaners outside Longmont count in this ranking?
Yes, if they are within 15 mi of the Longmont city center, our service radius for window cleaners. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Can window cleaners pay to rank higher on ContractorsRanked?
No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.
Update log for Longmont
- November 2026: CR Scores recalculated for 66 window cleaners serving Longmont.
- November 2026: 1 duplicate listing merged.
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