65/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 152 Google reviews, listed on Google as “Pressure washing service”.
Best Pressure Washing Companies in Diamond Bar, CA (2026)
144 pressure washing companies 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 65/100; 5.0★ from 152 Google reviews; open 24/7.
- 3
Best for emergencies (open 24/7): Foothill Pressure Washing LLC, posts 24/7 hours; ranked #3 of 144.
- 2
Most-reviewed: CMAX Sanitary Services, 1,221 Google reviews at 5.0★, the most of 144 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
144 Diamond Bar pressure washing companies are ranked here by CR Score, from ten published factors. 33 are open 24/7, 120 open Saturdays and 73 open Sundays, based on posted hours. The median Google rating is 5.0★ across 144 rated businesses.
Top 10 pressure washing companies in Diamond Bar at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Pacific coast window cleaning | 65 | 5.0★ (152) | Diamond Bar | 24/7 | Overall |
| 2 | CMAX Sanitary Services | 61 | 5.0★ (1,221) | Ontario, 12 mi away | Sat · Evenings | Most reviews |
| 3 | Foothill Pressure Washing LLC | 61 | 5.0★ (52) | San Dimas, 6 mi away | 24/7 | Emergencies |
| 4 | PowerHouse Solutions | 61 | 5.0★ (14) | Diamond Bar | 24/7 | — |
| 5 | Hampton Elite Cleaning Services | 60 | 5.0★ (11) | Diamond Bar | 24/7 | — |
| 6 | Icon Fire Prevention Inc Kitchen Hood Cleaning Service | 60 | 5.0★ (25) | Diamond Bar | Sat · Sun · Evenings | — |
| 7 | Pinnacle Exterior Cleaning Company | 60 | 5.0★ (10) | Diamond Bar | 24/7 | — |
| 8 | Pro Panel Cleaners | 60 | 5.0★ (8) | Diamond Bar | 24/7 | — |
| 9 | Elite Pressure Washing | 60 | 4.8★ (23) | Diamond Bar | Sat · Sun · Evenings | — |
| 10 | A Mobile Carpet & Floor Cleaning | 60 | 4.8★ (125) | Chino Hills, 6 mi away | Sat · Sun · Evenings | — |
The 144 best pressure washing companies 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 Ontario, 12 mi away
61/100CR ScoreRanked #2 because of its Google rating and review volume: 5.0★ from 1,221 Google reviews, the most in Diamond Bar.
Based in San Dimas, 6 mi away
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 52 Google reviews, listed on Google as “Pressure washing service”.
Based in Diamond Bar
61/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Pressure washing service”.
Based in Diamond Bar
60/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Pressure washing service”.
Based in Diamond Bar
60/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “Pressure washing service”.
Based in Diamond Bar
60/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Pressure washing service”.
Based in Diamond Bar
60/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Pressure washing service”.
Based in Diamond Bar
60/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.8★ from 23 Google reviews, listed on Google as “Pressure washing service”.
Based in Chino Hills, 6 mi away
60/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 125 Google reviews, listed on Google as “Pressure washing service”.
Based in Yorba Linda, 10 mi away
59/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.8★ from 90 Google reviews, listed on Google as “Pressure washing service”.
Based in Diamond Bar
59/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Pressure washing service”.
Based in Long Beach, 12 mi away
59/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 383 Google reviews, listed on Google as “Pressure washing service”.
Based in Upland, 10 mi away
58/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.8★ from 51 Google reviews, listed on Google as “Pressure washing service”.
Based in Baldwin Park, 6 mi away
58/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.8★ from 17 Google reviews, listed on Google as “Pressure washing service”.
Based in Diamond Bar
58/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Pressure washing service”.
Based in Ontario, 13 mi away
58/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 131 Google reviews, listed on Google as “Pressure washing service”.
Based in Diamond Bar
58/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Pressure washing service”.
Based in Covina, 6 mi away
58/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Pressure washing service”.
#20 KC Power Clean
Based in Brea, 10 mi away
58/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.9★ from 435 Google reviews, listed on Google as “Pressure washing service”.
#21 Limpieza Company
Based in Baldwin Park, 8 mi away
58/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 97 Google reviews, listed on Google as “Pressure washing service”.
Based in Diamond Bar
57/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Pressure washing service”.
Based in Santa Ana, 9 mi away
57/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Pressure washing service”.
Based in Walnut, 4 mi away
57/100CR ScoreRanked #24 because of its Google rating and review volume: 4.8★ from 229 Google reviews.
Based in Diamond Bar
57/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.2★ from 5 Google reviews, listed on Google as “Pressure washing service”.
Pressure washing companies 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 144 ranked pressure washing companies here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Zaragoza Cleaning Pressure Washing | 57 | 5.0★ (3) | In Diamond Bar |
| 27 | Big City Wash | 57 | 5.0★ (3) | In Diamond Bar |
| 28 | Brea Pressure Washing Crew | 57 | 5.0★ (3) | In Diamond Bar |
| 29 | Fine Shine Co. | 57 | 5.0★ (3) | In Diamond Bar |
| 30 | Alert Power Washing | 56 | 4.3★ (3) | In Diamond Bar |
| 31 | Property Care Building Service | 56 | 4.9★ (42) | 15 mi |
| 32 | Elevate Exteriors | 56 | 5.0★ (30) | 6 mi |
| 33 | Pacific Coast Pressure Washing | 56 | 5.0★ (25) | 10 mi |
| 34 | Ignite pressure washing LLC | 56 | 5.0★ (28) | 5 mi |
| 35 | M & S Pressure Washing Services | 56 | 4.8★ (6) | 8 mi |
| 36 | Curb Solutions | 56 | 5.0★ (9) | 6 mi |
| 37 | Js Pristine Clean | 56 | 5.0★ (72) | 4 mi |
| 38 | American Power Wash | 56 | 3.9★ (7) | 3 mi |
| 39 | J & G Pressure Washing | 56 | 5.0★ (5) | In Diamond Bar |
| 40 | Clean Image Mobile | Monrovia | 56 | 5.0★ (50) | 13 mi |
| 41 | ClearProWash | 56 | 5.0★ (9) | 7 mi |
| 42 | J & R Mobile Pressure Washing LLC | 55 | 5.0★ (5) | 8 mi |
| 43 | Shimmer Shine Property Detailing | 55 | 5.0★ (56) | 3 mi |
| 44 | Laparkinglotlegends | 55 | 5.0★ (4) | In Diamond Bar |
| 45 | Purix Pressure Washing LLC | Fleet Wash Services | 55 | 4.9★ (38) | 13 mi |
| 46 | Retro Wash LLC | 55 | 4.4★ (13) | 3 mi |
| 47 | Envirowash | 55 | 4.7★ (31) | 10 mi |
| 48 | Golden Coast Soft Wash | 55 | 5.0★ (15) | 10 mi |
| 49 | GreenCal Pressure Washing | 55 | 5.0★ (49) | 15 mi |
| 50 | Shine On Detailing Supplies | 55 | 4.9★ (111) | 14 mi |
Also serving Diamond Bar
20 more pressure washing companies 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 Fast Washing – Exterior Cleaning | 5.0★ (2) | 9 mi |
| A.Y.S. Window Cleaning | In Diamond Bar | |
| Acosta & Son Pressure Washing Services | 5.0★ (1) | In Diamond Bar |
| Chino Pressure Washing | 5.0★ (1) | In Diamond Bar |
| DLJ PROPERTY SOLUTIONS, LLC | 5.0★ (2) | In Diamond Bar |
| Dumpster Diver Trash Bin Cleaning & Sanitation LLC | 5.0★ (1) | In Diamond Bar |
| Fly Home Detailing LLC | In Diamond Bar | |
| FreshGrid power wash | In Diamond Bar | |
| Lavish Pressure Wash | 5.0★ (1) | In Diamond Bar |
| Maid In California | 4.7★ (15) | In Diamond Bar |
| Moya Bros Power Washing | 5.0★ (2) | 9 mi |
| MTO Clean | 5.0★ (2) | 8 mi |
| Paradise Cleaning Solutions | 5.0★ (1) | In Diamond Bar |
| Pomona Pressure Washing | 1.0★ (1) | In Diamond Bar |
| Premier Pressure Pros | In Diamond Bar | |
| RJ6 Power Washing LLC | 5.0★ (2) | In Diamond Bar |
| Squeegee Pro - Claremont | Window Cleaning & Pressure Washing | 3.0★ (2) | 6 mi |
| Super Pressure Washer | In Diamond Bar | |
| The Foamy Homies | 5.0★ (2) | 9 mi |
| Vivid pressure washing | In Diamond Bar |
How we ranked Diamond Bar pressure washing companies
We scored 144 Diamond Bar pressure washing companies 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 |
Pressure washing companies in Diamond Bar: frequently asked questions
Who is the best pressure washing company in Diamond Bar?
By CR Score, the highest-ranked pressure washing company in Diamond Bar, CA is Pacific coast window cleaning with a CR Score of 65/100. It has 5.0★ from 152 Google reviews. It is open 24/7. CMAX Sanitary Services (#2) and Foothill Pressure Washing LLC (#3) follow. We ranked 144 pressure washing companies on ten factors, last updated November 3, 2026.
How many pressure washing companies are there in Diamond Bar?
ContractorsRanked ranks 144 pressure washing companies serving Diamond Bar, CA. 19 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 pressure washing companies in Diamond Bar are open 24/7?
33 ranked pressure washing companies in Diamond Bar post 24/7 hours. The highest-ranked are Pacific coast window cleaning (#1), Foothill Pressure Washing LLC (#3) and PowerHouse Solutions (#4). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which pressure washing companies in Diamond Bar work on weekends?
120 of 144 ranked pressure washing companies post Saturday hours and 73 post Sunday hours. The highest-ranked open Saturdays are Pacific coast window cleaning (#1), CMAX Sanitary Services (#2) and Foothill Pressure Washing LLC (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Diamond Bar pressure washing companies have?
The median Google rating among 144 rated pressure washing companies in Diamond Bar is 5.0★, with a median of 15 reviews. CMAX Sanitary Services has the most, 1,221 reviews, and ranks #2. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank pressure washing companies?
Each pressure washing company 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 pressure washing companies outside Diamond Bar count in this ranking?
Yes, if they are within 15 mi of the Diamond Bar city center, our service radius for pressure washing companies. 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 pressure washing companies 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 144 pressure washing companies serving Diamond Bar.
- November 2026: 1 duplicate listing merged.
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