87/100CR Score
Ranked #1 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
Best Foundation Repair Companies in San Dimas, CA (2026)
227 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in San Dimas: Green Ladder Roofing and Waterproofing, CR Score 87/100; 5.0★ from 258 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Dalinghaus Foundation Repair, posts 24/7 hours; ranked #2 of 227.
- 2
Most-reviewed: Dalinghaus Foundation Repair, 733 Google reviews at 4.9★, the most of 227 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
227 San Dimas foundation repair companies are ranked here by CR Score, from 8 published factors. 34 are open 24/7, 149 open Saturdays and 92 open Sundays, based on posted hours. The median Google rating is 5.0★ across 227 rated businesses.
Top 10 foundation repair companies in San Dimas at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Green Ladder Roofing and Waterproofing | 87 | 5.0★ (258) | Pasadena, 19 mi away | 24/7 | Overall |
| 2 | Dalinghaus Foundation Repair | 85 | 4.9★ (733) | Lake Elsinore, 40 mi away | 24/7 | Emergencies, Most reviews |
| 3 | Professional Foundation Repair | 85 | 4.9★ (216) | Garden Grove, 25 mi away | 24/7 | — |
| 4 | Pro-Seal Systems | 83 | 5.0★ (9) | Glendora, 4 mi away | Sat · Sun | — |
| 5 | Cabral Roofing & Waterproofing | 83 | 4.6★ (9) | San Dimas | 24/7 | — |
| 6 | Infinity Shower Pans | 82 | 5.0★ (17) | Whittier, 18 mi away | Sat · Sun · Evenings | — |
| 7 | Easy Builders Construction | 82 | 5.0★ (21) | Glendora, 4 mi away | 24/7 | — |
| 8 | Dalinghaus Foundation Repair | 81 | 5.0★ (53) | Irvine, 33 mi away | 24/7 | — |
| 9 | Groundworks | 81 | 4.9★ (135) | Ontario, 11 mi away | Sat · Sun · Evenings | — |
| 10 | LA Foundation Repair Los Angeles | 80 | 5.0★ (34) | Beverly Hills, 35 mi away | 24/7 | — |
The 227 best foundation repair companies in San Dimas, 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 Lake Elsinore, 40 mi away
85/100CR ScoreRanked #2 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
Based in Garden Grove, 25 mi away
85/100CR 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 Glendora, 4 mi away
83/100CR ScoreRanked #4 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
83/100CR ScoreRanked #5 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 Whittier, 18 mi away
82/100CR ScoreRanked #6 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
Based in Glendora, 4 mi away
82/100CR ScoreRanked #7 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 Irvine, 33 mi away
81/100CR ScoreRanked #8 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
#9 Groundworks
Based in Ontario, 11 mi away
81/100CR ScoreRanked #9 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 Beverly Hills, 35 mi away
80/100CR ScoreRanked #10 because of its Google rating and availability: 5.0★ from 34 Google reviews, open 24/7.
- 5.0★ from 34 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Huntington Beach, 29 mi away
80/100CR ScoreRanked #11 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 Long Beach, 30 mi away
80/100CR ScoreRanked #12 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 Pasadena, 19 mi away
80/100CR ScoreRanked #13 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 Montclair, 8 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 Van Nuys, 37 mi away
79/100CR ScoreRanked #15 because of its Google rating and availability: 4.7★ from 55 Google reviews, open 24/7.
- 4.7★ from 55 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 14349 Victory Blvd, Van Nuys, CA 91401
Based in Huntington Beach, 29 mi away
79/100CR ScoreRanked #16 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 Los Angeles, 22 mi away
79/100CR 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
#18 Dreyfuss Grading
Based in Camp Pendleton South, 5 mi away
79/100CR ScoreRanked #18 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
Based in Los Angeles, 32 mi away
79/100CR ScoreRanked #19 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 Glendora, 3 mi away
79/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 7 Google reviews
- Hours
- Mon–Sat 8 AM–5 PM · Sun closed
- Address
- 854 E Meda Ave, Glendora, CA 91741
Based in La Crescenta-Montrose, 26 mi away
79/100CR ScoreRanked #21 because of its Google rating and availability: 4.7★ from 12 Google reviews, open 24/7.
- 4.7★ from 12 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2852 Foothill Blvd, La Crescenta-Montrose, CA 91214
Based in Orange, 22 mi away
79/100CR ScoreRanked #22 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
#23 Horizon Roofing
Based in Irvine, 29 mi away
79/100CR ScoreRanked #23 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 Los Angeles, 35 mi away
78/100CR ScoreRanked #24 because of its Google rating and availability: 4.8★ from 73 Google reviews, open 24/7.
- 4.8★ from 73 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3520 Overland Ave #A29, Los Angeles, CA 90034
Based in Irvine, 29 mi away
78/100CR ScoreRanked #25 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
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 227 ranked foundation repair companies here; the rest are on their profiles.
Also serving San Dimas
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) | 31 mi |
| ACE Restoration & Waterproofing, Inc. | 5.0★ (2) | 18 mi |
| All star Remodeling San Dimas | In San Dimas | |
| Builders Trust Construction | 5.0★ (2) | 33 mi |
| CALIFORNIA ROOF COATINGS | 4.0★ (2) | 7 mi |
| Cis Roofing Waterproofing Solar | 5.0★ (2) | 22 mi |
| Dan’s Roofing Company Riverside | 5.0★ (2) | 26 mi |
| Dominguez Construction | 3.0★ (2) | 7 mi |
| EFP waterproofing | 5.0★ (2) | 31 mi |
| FQI11 Masonry Brick's & Chimney Inspection Ltd | 4.7★ (3) | In San Dimas |
| Freedom Chemical Corporation | 5.0★ (2) | 31 mi |
| Innovative Painting & Waterproofing | 5.0★ (2) | 14 mi |
| LA Deck and Balcony | 5.0★ (2) | 31 mi |
| LGC Development | 5.0★ (4) | In San Dimas |
| MH Rueda Construction | 5.0★ (1) | In San Dimas |
| Professional Foundation Repair | 5.0★ (2) | 32 mi |
| Slater Waterproofing Inc | 3.0★ (2) | 7 mi |
| The M&M Construction Group | 5.0★ (1) | In San Dimas |
| White Castle Construction | 5.0★ (2) | 31 mi |
| Zerik Scales | 5.0★ (2) | 31 mi |
How much do foundation repair companies cost in San Dimas?
National price ranges in USD, not adjusted for San Dimas. 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 San Dimas foundation repair companies
We scored 227 San Dimas 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 San Dimas 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 San Dimas: frequently asked questions
Who is the best foundation repair company in San Dimas?
By CR Score, the highest-ranked foundation repair company in San Dimas, CA is Green Ladder Roofing and Waterproofing with a CR Score of 87/100. It has 5.0★ from 258 Google reviews. It is open 24/7. Dalinghaus Foundation Repair (#2) and Professional Foundation Repair (#3) follow. We ranked 227 foundation repair companies on 8 factors, last updated October 22, 2026.
How many foundation repair companies are there in San Dimas?
ContractorsRanked ranks 227 foundation repair companies serving San Dimas, CA. 1 of them is based in San Dimas; the rest serve it from nearby towns. Another 20 within 40 mi are listed but not ranked yet. Counts are as of October 2026.
Which foundation repair companies in San Dimas are open 24/7?
34 ranked foundation repair companies in San Dimas post 24/7 hours. The highest-ranked are Green Ladder Roofing and Waterproofing (#1), Dalinghaus Foundation Repair (#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 San Dimas work on weekends?
149 of 227 ranked foundation repair companies post Saturday hours and 92 post Sunday hours. The highest-ranked open Saturdays are Green Ladder Roofing and Waterproofing (#1), Dalinghaus Foundation Repair (#2) and Professional Foundation Repair (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does foundation repair cost in San Dimas?
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 San Dimas. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do San Dimas foundation repair companies have?
The median Google rating among 227 rated foundation repair companies in San Dimas is 5.0★, with a median of 17 reviews. Dalinghaus Foundation Repair has the most, 733 reviews, and ranks #2. 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 San Dimas count in this ranking?
Yes, if they are within 40 mi of the San Dimas 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 San Dimas
- October 2026: CR Scores recalculated for 227 foundation repair companies serving San Dimas.
- October 2026: 1 duplicate listing merged.
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