Ranked #1 because of its Google rating and availability: 4.9★ from 434 Google reviews, open 24/7.
- 4.9★ from 434 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1200 S Diamond Bar Blvd UNIT 206, Diamond Bar, CA 91765
1,386 water damage restoration companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Walnut: Roto-Rooter Plumbing & Water Cleanup, CR Score 93/100; 4.9★ from 434 Google reviews; open 24/7.
Best for emergencies (open 24/7): SERVPRO of Diamond Bar/South Pomona, posts 24/7 hours; ranked #2 of 1,386.
Most-reviewed: Stanley Steemer, 2,345 Google reviews at 4.8★, the most of 1,386 ranked; ranked #11.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,386 Walnut water damage restoration companies are ranked here by CR Score, from 8 published factors. 837 are open 24/7, 1,212 open Saturdays and 1,058 open Sundays, based on posted hours. The median Google rating is 5.0★ across 1,386 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Roto-Rooter Plumbing & Water Cleanup | 93 | 4.9★ (434) | Diamond Bar, 3 mi away | 24/7 | Overall |
| 2 | SERVPRO of Diamond Bar/South Pomona | 93 | 5.0★ (271) | Diamond Bar, 3 mi away | 24/7 | Emergencies |
| 3 | Roto-Rooter Plumbing & Water Cleanup | 92 | 4.8★ (1,330) | Ontario, 12 mi away | 24/7 | — |
| 4 | SERVPRO of Walnut | 91 | 5.0★ (94) | Walnut | 24/7 | — |
| 5 | SERVPRO of Fountain Valley | 91 | 5.0★ (578) | Fountain Valley, 23 mi away | 24/7 | — |
| 6 | SERVPRO of Glendora/San Dimas | 91 | 5.0★ (122) | Glendora, 6 mi away | 24/7 | — |
| 7 | Restorerz Emergency Services | 91 | 5.0★ (178) | Placentia, 11 mi away | 24/7 | — |
| 8 | Cisneros Brothers Plumbing, Heating & AC Repair, Water Damage Restoration & Flood Services | 90 | 4.9★ (710) | Riverside, 24 mi away | 24/7 | — |
| 9 | PuroClean of Rowland Heights | 90 | 5.0★ (70) | Rowland Heights, 3 mi away | 24/7 | — |
| 10 | SERVPRO of Azusa / Covina | 90 | 5.0★ (89) | Covina, 5 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and availability: 4.9★ from 434 Google reviews, open 24/7.
Based in Diamond Bar, 3 mi away
Ranked #2 because of its Google rating and availability: 5.0★ from 271 Google reviews, open 24/7.
Based in Ontario, 12 mi away
Ranked #3 because of its Google rating and availability: 4.8★ from 1,330 Google reviews, open 24/7.
Based in Walnut
Ranked #4 because of its Google rating and availability: 5.0★ from 94 Google reviews, open 24/7.
Based in Fountain Valley, 23 mi away
Ranked #5 because of its Google rating and availability: 5.0★ from 578 Google reviews, open 24/7.
Based in Glendora, 6 mi away
Ranked #6 because of its Google rating and availability: 5.0★ from 122 Google reviews, open 24/7.
Based in Placentia, 11 mi away
Ranked #7 because of its Google rating and availability: 5.0★ from 178 Google reviews, open 24/7.
Based in Riverside, 24 mi away
Ranked #8 because of its Google rating and availability: 4.9★ from 710 Google reviews, open 24/7.
Based in Rowland Heights, 3 mi away
Ranked #9 because of its Google rating and availability: 5.0★ from 70 Google reviews, open 24/7.
Based in Covina, 5 mi away
Ranked #10 because of its Google rating and availability: 5.0★ from 89 Google reviews, open 24/7.
Based in Anaheim, 11 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 2,345 Google reviews, listed on Google as “Water damage restoration service”.
Based in West Covina, 4 mi away
Ranked #12 because of its Google rating and availability: 4.8★ from 133 Google reviews, open 24/7.
Based in Rancho Cucamonga, 18 mi away
Ranked #13 because of its Google rating and availability: 5.0★ from 213 Google reviews, open 24/7.
Based in Santa Fe Springs, 12 mi away
Ranked #14 because of its Google rating and availability: 5.0★ from 134 Google reviews, open 24/7.
Based in Diamond Bar, 2 mi away
Ranked #15 because of its Google rating and availability: 4.9★ from 75 Google reviews, open 24/7.
Based in Westminster, 19 mi away
Ranked #16 because of its Google rating and availability: 4.9★ from 380 Google reviews, open 24/7.
Based in Brea, 14 mi away
Ranked #17 because of its Google rating and availability: 4.9★ from 213 Google reviews, open 24/7.
Based in Monrovia, 11 mi away
Ranked #18 because of its Google rating and availability: 5.0★ from 103 Google reviews, open 24/7.
Based in Gardena, 28 mi away
Ranked #19 because of its Google rating and availability: 5.0★ from 436 Google reviews, open 24/7.
Based in Altadena, 19 mi away
Ranked #20 because of its Google rating and availability: 5.0★ from 195 Google reviews, open 24/7.
Based in Orange, 15 mi away
Ranked #21 because of its Google rating and availability: 4.9★ from 191 Google reviews, open 24/7.
Based in Baldwin Park, 8 mi away
Ranked #22 because of its Google rating and availability: 5.0★ from 76 Google reviews, open 24/7.
Based in Glendora, 7 mi away
Ranked #23 because of its Google rating and availability: 5.0★ from 68 Google reviews, open 24/7.
Based in Huntington Beach, 26 mi away
Ranked #24 because of its Google rating and availability: 4.9★ from 475 Google reviews, open 24/7.
Based in Anaheim, 13 mi away
Ranked #25 because of its Google rating and availability: 5.0★ from 192 Google reviews, open 24/7.
#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 1,386 ranked water damage restoration companies here; the rest are on their profiles.
20 more water damage restoration companies within 40 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 |
|---|---|---|
| ACE Restoration & Waterproofing, Inc. | 5.0★ (2) | 11 mi |
| ANTOP FLOORING INC | 5.0★ (2) | 3 mi |
| ASAP Flood & Fire Restoration | 5.0★ (2) | 12 mi |
| COIT Cleaning and Restoration | 4.3★ (324) | 10 mi |
| Elite | 4.0★ (2) | 7 mi |
| ER1 Services | 4.5★ (2) | 11 mi |
| GForced Mold Removal & Remediation West Covina CA | 5.0★ (2) | 6 mi |
| Go Green | 5.0★ (2) | 5 mi |
| Golden Age Construction | 5.0★ (2) | 5 mi |
| JB Plumbing | 4.5★ (2) | 10 mi |
| JMF Commercial Construction | 5.0★ (2) | 10 mi |
| Minalya Inc. | 5.0★ (2) | 3 mi |
| Pro Desk at The Home Depot | 5.0★ (2) | 7 mi |
| PuroClean | 5.0★ (2) | 4 mi |
| Servpro San Gabriel | 5.0★ (2) | 9 mi |
| Stanley Steemer | 4.9★ (2,500) | 32 mi |
| Stanley Steemer | 4.9★ (2,149) | 8 mi |
| STONESHINE Restoration & Remodeling | 5.0★ (2) | 9 mi |
| Thread Mold Removal El Monte CA | 5.0★ (2) | 10 mi |
| Wipeout Restoration | 5.0★ (125) | 21 mi |
National price ranges in USD, not adjusted for Walnut. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Water damage restoration | $1,383 | $3,868 | $6,369 | Per job: typical range of customer-reported restorations. US national range | October 2026 |
We scored 1,386 Walnut water damage restoration companies on 8 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. Unknown factors are left out of the score, not counted as zero. Scores last refreshed October 22, 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 Walnut data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |