63/100CR Score
Ranked #1 because of its Google rating and review volume: 5.0★ from 152 Google reviews.
Best Window Cleaners in Diamond Bar, CA (2026)
111 window cleaners ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Diamond Bar: Pacific coast window cleaning, CR Score 63/100; 5.0★ from 152 Google reviews; open 24/7.
- 3
Best for emergencies (open 24/7): Sapphire Window Cleaning, posts 24/7 hours; ranked #3 of 111.
- 20
Most-reviewed: Orange Window Cleaning, 389 Google reviews at 4.9★, the most of 111 ranked; ranked #20.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
111 Diamond Bar window cleaners are ranked here by CR Score, from ten published factors. 19 are open 24/7, 90 open Saturdays and 46 open Sundays, based on posted hours. The median Google rating is 5.0★ across 111 rated businesses.
Top 10 window cleaners in Diamond Bar at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Pacific coast window cleaning | 63 | 5.0★ (152) | Diamond Bar | 24/7 | Overall |
| 2 | Q Shine Services | 62 | 5.0★ (76) | Diamond Bar | Sat · Evenings | — |
| 3 | Sapphire Window Cleaning | 60 | 5.0★ (13) | Norwalk, 3 mi away | 24/7 | Emergencies |
| 4 | Nogales Auto Glass Tinting | 60 | 4.7★ (54) | Walnut, 5 mi away | Sat · Sun | — |
| 5 | King Window Cleaning | 59 | 5.0★ (79) | Upland, 10 mi away | Sat · Sun | — |
| 6 | Palm Coast Solar Cleaning of Upland | 59 | 5.0★ (117) | Upland, 12 mi away | Sat · Sun | — |
| 7 | Victory Wash and Windows | 59 | 5.0★ (151) | San Bernardino, 14 mi away | 24/7 | — |
| 8 | KnockOutCleaners | 59 | 5.0★ (35) | Montclair, 6 mi away | Sat · Sun | — |
| 9 | Loyal Exterior Cleaning | 59 | 4.8★ (229) | Walnut, 4 mi away | 24/7 | — |
| 10 | Helping hands cleaning | 58 | 4.2★ (21) | Chino, 6 mi away | 24/7 | — |
The 111 best window cleaners in Diamond Bar, 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 Diamond Bar
62/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 76 Google reviews, listed on Google as “Window cleaning service”.
Based in Norwalk, 3 mi away
60/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Window cleaning service”.
Based in Walnut, 5 mi away
60/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.7★ from 54 Google reviews, listed on Google as “Window cleaning service”.
Based in Upland, 10 mi away
59/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 79 Google reviews, listed on Google as “Window cleaning service”.
Based in Upland, 12 mi away
59/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 117 Google reviews, listed on Google as “Window cleaning service”.
Based in San Bernardino, 14 mi away
59/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 151 Google reviews, listed on Google as “Window cleaning service”.
Based in Montclair, 6 mi away
59/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “Window cleaning service”.
Based in Walnut, 4 mi away
59/100CR ScoreRanked #9 because of its Google rating and review volume: 4.8★ from 229 Google reviews.
Based in Chino, 6 mi away
58/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.2★ from 21 Google reviews, listed on Google as “Window cleaning service”.
Based in Azusa, 5 mi away
58/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Window cleaning service”.
#12 LuxPro Cleaning
Based in Baldwin Park, 3 mi away
58/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Window cleaning service”.
Based in Redondo Beach, 6 mi away
58/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 18 Google reviews, listed on Google as “Window cleaning service”.
Based in Anaheim, 11 mi away
58/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 121 Google reviews, listed on Google as “Window cleaning service”.
Based in Yorba Linda, 10 mi away
57/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 69 Google reviews, listed on Google as “Window cleaning service”.
Based in San Dimas, 4 mi away
57/100CR ScoreRanked #16 because of its Google rating and review volume: 5.0★ from 72 Google reviews.
Based in La Verne, 6 mi away
57/100CR ScoreRanked #17 because of its Google rating and review volume: 5.0★ from 246 Google reviews.
#18 Mentha Clean
Based in Ontario, 10 mi away
57/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 67 Google reviews, listed on Google as “Window cleaning service”.
#19 Window Cowboys
Based in Corona, 15 mi away
57/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Window cleaning service”.
Based in Orange, 15 mi away
57/100CR ScoreRanked #20 because of its Google rating and review volume: 4.9★ from 389 Google reviews, the most in Diamond Bar.
Based in Baldwin Park, 3 mi away
57/100CR ScoreRanked #21 because of its Google rating and review volume: 5.0★ from 56 Google reviews.
Based in Baldwin Park, 6 mi away
57/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Window cleaning service”.
Based in Orange, 13 mi away
57/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “Window cleaning service”.
Based in Claremont, 7 mi away
57/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Window cleaning service”.
Based in Baldwin Park, 11 mi away
56/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 53 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 111 ranked window cleaners here; the rest are on their profiles.
Also serving Diamond Bar
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 |
|---|---|---|
| A.Y.S. Window Cleaning | In Diamond Bar | |
| Arc Window Cleaners | 5.0★ (2) | 14 mi |
| B K Window Cleaning | 5.0★ (2) | 10 mi |
| Blue Gecko Window Cleaning | 5.0★ (2) | 14 mi |
| CEBM Inc | 5.0★ (2) | 12 mi |
| DMS Window Cleaning | 4.5★ (2) | 11 mi |
| Double Bubble Window Washing | 3.0★ (2) | 8 mi |
| External Gloss | 5.0★ (1) | 5 mi |
| Flash Building Care | 5.0★ (1) | In Diamond Bar |
| Home Run Exterior Services | 5.0★ (1) | 8 mi |
| J & J Janitorial Services | 5.0★ (1) | 6 mi |
| Lavish Pressure Wash | 5.0★ (1) | In Diamond Bar |
| Orange Coast Window Spa | 5.0★ (2) | 14 mi |
| Paradise Cleaning Solutions | 5.0★ (1) | In Diamond Bar |
| Pro Clean Maids of Pomona/Covina | 5.0★ (2) | 6 mi |
| Revelation Window Cleaning | 5.0★ (1) | 6 mi |
| S T Window Washing & Janitorial | 4.5★ (2) | 11 mi |
| Squeegee Pro - Claremont | Window Cleaning & Pressure Washing | 3.0★ (2) | 6 mi |
| Window Screen Service by Bob - Screen Repair, Window Screen Installation and Replacement | 5.0★ (2) | 14 mi |
| Winstons Window Cleaning & Maintance | 5.0★ (1) | 8 mi |
How we ranked Diamond Bar window cleaners
We scored 111 Diamond Bar 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 Diamond Bar 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 Diamond Bar: frequently asked questions
Who is the best window cleaner in Diamond Bar?
By CR Score, the highest-ranked window cleaner in Diamond Bar, CA is Pacific coast window cleaning with a CR Score of 63/100. It has 5.0★ from 152 Google reviews. It is open 24/7. Q Shine Services (#2) and Sapphire Window Cleaning (#3) follow. We ranked 111 window cleaners on ten factors, last updated November 3, 2026.
How many window cleaners are there in Diamond Bar?
ContractorsRanked ranks 111 window cleaners serving Diamond Bar, CA. 2 of them are based in Diamond Bar; 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 Diamond Bar are open 24/7?
19 ranked window cleaners in Diamond Bar post 24/7 hours. The highest-ranked are Pacific coast window cleaning (#1), Sapphire Window Cleaning (#3) and Victory Wash and Windows (#7). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which window cleaners in Diamond Bar work on weekends?
90 of 111 ranked window cleaners post Saturday hours and 46 post Sunday hours. The highest-ranked open Saturdays are Pacific coast window cleaning (#1), Q Shine Services (#2) and Sapphire Window Cleaning (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Diamond Bar window cleaners have?
The median Google rating among 111 rated window cleaners in Diamond Bar is 5.0★, with a median of 17 reviews. Orange Window Cleaning has the most, 389 reviews, and ranks #20. 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 Diamond Bar count in this ranking?
Yes, if they are within 15 mi of the Diamond Bar 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 Diamond Bar
- November 2026: CR Scores recalculated for 111 window cleaners serving Diamond Bar.
- November 2026: 5 duplicate listings merged.
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