87/100CR Score
Ranked #1 because of its Google rating and availability: 4.9★ from 733 Google reviews, open 24/7.
- 4.9★ from 733 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 445 Birch St, Lake Elsinore, CA 92530
Best Foundation Repair Companies in Los Serranos, CA (2026)
190 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Los Serranos: Dalinghaus Foundation Repair, CR Score 87/100; 4.9★ from 733 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Green Ladder Roofing and Waterproofing, posts 24/7 hours; ranked #2 of 190.
- 15
Most-reviewed: Home Renew 360 Roofing I Construction I Energy, 705 Google reviews at 4.8★, the most of 190 ranked after Dalinghaus Foundation Repair; ranked #15.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
190 Los Serranos foundation repair companies are ranked here by CR Score, from 8 published factors. 26 are open 24/7, 126 open Saturdays and 72 open Sundays, based on posted hours. The median Google rating is 5.0★ across 190 rated businesses.
Top 10 foundation repair companies in Los Serranos at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Dalinghaus Foundation Repair | 87 | 4.9★ (733) | Lake Elsinore, 29 mi away | 24/7 | Overall |
| 2 | Green Ladder Roofing and Waterproofing | 86 | 5.0★ (258) | Pasadena, 27 mi away | 24/7 | Emergencies |
| 3 | Professional Foundation Repair | 86 | 4.9★ (216) | Garden Grove, 21 mi away | 24/7 | — |
| 4 | Dalinghaus Foundation Repair | 83 | 5.0★ (53) | Irvine, 24 mi away | 24/7 | — |
| 5 | Infinity Shower Pans | 82 | 5.0★ (17) | Whittier, 19 mi away | Sat · Sun · Evenings | — |
| 6 | Groundworks | 81 | 4.9★ (135) | Ontario, 7 mi away | Sat · Sun · Evenings | — |
| 7 | Pro-Seal Systems | 81 | 5.0★ (9) | Glendora, 14 mi away | Sat · Sun | — |
| 8 | Cabral Roofing & Waterproofing | 81 | 4.6★ (9) | San Dimas, 11 mi away | 24/7 | — |
| 9 | CBS Construction Services | 81 | 4.9★ (15) | Huntington Beach, 25 mi away | Sat · Sun · Evenings | — |
| 10 | Robles Roofing and Waterproof | 80 | 5.0★ (15) | Huntington Beach, 24 mi away | 24/7 | — |
The 190 best foundation repair companies in Los Serranos, ranked
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.
Based in Pasadena, 27 mi away
86/100CR ScoreRanked #2 because of its Google rating and availability: 5.0★ from 258 Google reviews, open 24/7.
- 5.0★ from 258 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 155 N Lake Ave Suite 800,874, Pasadena, CA 91101
Based in Garden Grove, 21 mi away
86/100CR ScoreRanked #3 because of its Google rating and availability: 4.9★ from 216 Google reviews, open 24/7.
- 4.9★ from 216 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7441 Anaconda Ave, Garden Grove, CA 92841
Based in Irvine, 24 mi away
83/100CR ScoreRanked #4 because of its Google rating and availability: 5.0★ from 53 Google reviews, open 24/7.
- 5.0★ from 53 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9891 Irvine Center Dr, Irvine, CA 92618
Based in Whittier, 19 mi away
82/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 17 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 14445 Tedford Dr, Whittier, CA 90604
#6 Groundworks
Based in Ontario, 7 mi away
81/100CR ScoreRanked #6 because of its Google rating and availability: 4.9★ from 135 Google reviews, open 7 days a week.
- 4.9★ from 135 Google reviews
- Hours
- Mon–Fri 4 AM–8 PM · Sat 5 AM–8 PM · Sun 7 AM–8 PM
- Address
- 1850 S Parco Ave, Ontario, CA 91761
Based in Glendora, 14 mi away
81/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 9 Google reviews
- Hours
- Mon–Sun 8 AM–4 PM
- Address
- 307 S Vermont Ave # H, Glendora, CA 91741
Based in San Dimas, 11 mi away
81/100CR ScoreRanked #8 because of its Google rating and availability: 4.6★ from 9 Google reviews, open 24/7.
- 4.6★ from 9 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 675 W Terrace Dr, San Dimas, CA 91773
Based in Huntington Beach, 25 mi away
81/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 15 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 15 Google reviews
- Hours
- Mon–Fri 6 AM–7 PM · Sat–Sun 8 AM–2 PM
- Address
- 15571 Producer Ln suite h, Huntington Beach, CA 92649
Based in Huntington Beach, 24 mi away
80/100CR ScoreRanked #10 because of its Google rating and availability: 5.0★ from 15 Google reviews, open 24/7.
- 5.0★ from 15 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 17551 Jefferson Ln Unit A, Huntington Beach, CA 92647
Based in Glendora, 14 mi away
80/100CR ScoreRanked #11 because of its Google rating and availability: 5.0★ from 21 Google reviews, open 24/7.
- 5.0★ from 21 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1025 W Arrow Hwy, Glendora, CA 91740
Based in Orange, 14 mi away
80/100CR ScoreRanked #12 because of its Google rating and availability: 5.0★ from 21 Google reviews, open 24/7.
- 5.0★ from 21 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11841 S Rancho Santiago Blvd, Orange, CA 92869
#13 Horizon Roofing
Based in Irvine, 22 mi away
80/100CR ScoreRanked #13 because of its Google rating and availability: 4.8★ from 59 Google reviews, open 24/7.
- 4.8★ from 59 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2030 Main St # 1300, Irvine, CA 92614
Based in Montclair, 6 mi away
80/100CR ScoreRanked #14 because of its Google rating and availability: 4.8★ from 82 Google reviews, open 7 days a week.
- 4.8★ from 82 Google reviews
- Hours
- Mon–Sat 6 AM–7 PM · Sun 9 AM–1 PM
- Address
- 11182 Poulsen Ave, Montclair, CA 91763
Based in Long Beach, 31 mi away
80/100CR ScoreRanked #15 because of its Google rating and review volume: 4.8★ from 705 Google reviews, 705 Google reviews.
- 4.8★ from 705 Google reviews
- Hours
- Mon–Sun 8:30 AM–5 PM
- Address
- 1500 W Carson St Suite 201, Long Beach, CA 90810
Based in Irvine, 21 mi away
79/100CR ScoreRanked #16 because of its Google rating and availability: 5.0★ from 28 Google reviews, open 24/7.
- 5.0★ from 28 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 18200 W McDurmott, Irvine, CA 92614
Based in Los Angeles, 28 mi away
78/100CR ScoreRanked #17 because of its Google rating and availability: 5.0★ from 16 Google reviews, open 24/7.
- 5.0★ from 16 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 231 N Record Ave, Los Angeles, CA 90063
Based in Anaheim, 21 mi away
78/100CR ScoreRanked #18 because of its Google rating and availability: 5.0★ from 31 Google reviews, open 24/7.
- 5.0★ from 31 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
#19 A R SHOWER PANS
Based in Canyon Lake, 33 mi away
78/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 9 Google reviews
- Hours
- Mon–Sun 6 AM–11 PM
- Address
- 30240 Gulf Stream Dr, Canyon Lake, CA 92587
Based in Pasadena, 27 mi away
78/100CR ScoreRanked #20 because of its Google rating and availability: 5.0★ from 26 Google reviews, open 24/7.
- 5.0★ from 26 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 35 N Lake Ave 7th floor suite 22, Pasadena, CA 91101
Based in Corona, 14 mi away
78/100CR ScoreRanked #21 because of its Google rating and availability: 5.0★ from 4 Google reviews, open 24/7.
- 5.0★ from 4 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 19085 Consul Ave, Corona, CA 92881
Based in Los Angeles, 38 mi away
78/100CR ScoreRanked #22 because of its Google rating and review volume: 5.0★ from 253 Google reviews, 253 Google reviews.
- 5.0★ from 253 Google reviews
- Hours
- Mon–Fri 8 AM–7 PM · Sat 9 AM–5 PM · Sun 8 AM–7 PM
- Address
- 7660 Beverly Blvd, Los Angeles, CA 90036
Based in Corona, 10 mi away
78/100CR ScoreRanked #23 because of its Google rating and availability: 4.7★ from 57 Google reviews, open 24/7.
- 4.7★ from 57 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 712 W 10th St, Corona, CA 92882
Based in Riverside, 21 mi away
78/100CR ScoreRanked #24 because of its Google rating and availability: 5.0★ from 3 Google reviews, open 24/7.
- 5.0★ from 3 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1118 Cozumel Ct, Riverside, CA 92501
#25 Dreyfuss Grading
Based in Camp Pendleton South, 14 mi away
78/100CR ScoreRanked #25 because of its Google rating and availability: 4.6★ from 9 Google reviews, open 24/7.
- 4.6★ from 9 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Foundation repair 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 190 ranked foundation repair companies here; the rest are on their profiles.
Also serving Los Serranos
20 more foundation repair 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 |
|---|---|---|
| A-Z Foundation Contractors | 5.0★ (2) | 30 mi |
| ACE Restoration & Waterproofing, Inc. | 5.0★ (2) | 12 mi |
| Bay Harbor Roofing & Waterproofing | 3.0★ (2) | 38 mi |
| Best Ever Waterproofing | 5.0★ (2) | 24 mi |
| Builders Trust Construction | 5.0★ (2) | 38 mi |
| CALIFORNIA ROOF COATINGS | 4.0★ (2) | 6 mi |
| Cis Roofing Waterproofing Solar | 5.0★ (2) | 31 mi |
| Dan’s Roofing Company Riverside | 5.0★ (2) | 18 mi |
| Dominguez Construction | 3.0★ (2) | 16 mi |
| EFP waterproofing | 5.0★ (2) | 30 mi |
| Freedom Chemical Corporation | 5.0★ (2) | 21 mi |
| Innovative Painting & Waterproofing | 5.0★ (2) | 11 mi |
| LA Deck and Balcony | 5.0★ (2) | 40 mi |
| Masterseal Corporation | 3.0★ (2) | 35 mi |
| Professional Foundation Repair | 5.0★ (2) | 24 mi |
| Slater Waterproofing Inc | 3.0★ (2) | 8 mi |
| Thomas Murray Waterproofing and Roofing | 4.5★ (2) | 37 mi |
| Valley Shower Pans | 5.0★ (2) | 28 mi |
| White Castle Construction | 5.0★ (2) | 37 mi |
| Zerik Scales | 5.0★ (2) | 36 mi |
How much do foundation repair companies cost in Los Serranos?
National price ranges in USD, not adjusted for Los Serranos. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Foundation repair | $2,225 | $5,174 | $8,133 | Per project: typical range of customer-reported repairs. US national range | October 2026 |
How we ranked Los Serranos foundation repair companies
We scored 190 Los Serranos foundation repair 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 Los Serranos 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 |
Foundation repair companies in Los Serranos: frequently asked questions
Who is the best foundation repair company in Los Serranos?
By CR Score, the highest-ranked foundation repair company in Los Serranos, CA is Dalinghaus Foundation Repair with a CR Score of 87/100. It has 4.9★ from 733 Google reviews. It is open 24/7. Green Ladder Roofing and Waterproofing (#2) and Professional Foundation Repair (#3) follow. We ranked 190 foundation repair companies on 8 factors, last updated October 22, 2026.
How many foundation repair companies are there in Los Serranos?
ContractorsRanked ranks 190 foundation repair companies serving Los Serranos, CA. Another 20 within 40 mi are listed but not ranked yet. Counts are as of October 2026.
Which foundation repair companies in Los Serranos are open 24/7?
26 ranked foundation repair companies in Los Serranos post 24/7 hours. The highest-ranked are Dalinghaus Foundation Repair (#1), Green Ladder Roofing and Waterproofing (#2) and Professional Foundation Repair (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which foundation repair companies in Los Serranos work on weekends?
126 of 190 ranked foundation repair companies post Saturday hours and 72 post Sunday hours. The highest-ranked open Saturdays are Dalinghaus Foundation Repair (#1), Green Ladder Roofing and Waterproofing (#2) and Professional Foundation Repair (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does foundation repair cost in Los Serranos?
Foundation repair typically costs $2,225 to $8,133, with $5,174 typical (Per project: typical range of customer-reported repairs. US national range). This is a national range, not adjusted for Los Serranos. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Los Serranos foundation repair companies have?
The median Google rating among 190 rated foundation repair companies in Los Serranos is 5.0★, with a median of 15 reviews. Dalinghaus Foundation Repair has the most, 733 reviews, and ranks #1. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank foundation repair companies?
Each foundation repair company gets a 0–100 CR Score from 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do foundation repair companies outside Los Serranos count in this ranking?
Yes, if they are within 40 mi of the Los Serranos city center, our service radius for foundation repair 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.
Update log for Los Serranos
- October 2026: CR Scores recalculated for 190 foundation repair companies serving Los Serranos.
- October 2026: 2 duplicate listings merged.
More foundation repair companies and Los Serranos pages
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