129 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Rancho Santa Margarita: Dalinghaus Foundation Repair, CR Score 61/100; 4.9★ from 733 Google reviews; open 24/7.
Best for emergencies (open 24/7): Dalinghaus Foundation Repair, posts 24/7 hours; ranked #2 of 129.
Most-reviewed: Saber, 1,011 Google reviews at 4.9★, the most of 129 ranked; ranked #29.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
129 Rancho Santa Margarita foundation repair companies are ranked here by CR Score, from ten published factors. 15 are open 24/7, 79 open Saturdays and 43 open Sundays, based on posted hours. The median Google rating is 4.9★ across 129 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Dalinghaus Foundation Repair | 61 | 4.9★ (733) | Lake Elsinore, 16 mi away | 24/7 | Overall |
| 2 | Dalinghaus Foundation Repair | 58 | 5.0★ (53) | Irvine, 7 mi away | 24/7 | Emergencies |
| 3 | Professional Foundation Repair | 58 | 4.9★ (216) | Garden Grove, 25 mi away | 24/7 | — |
| 4 | A R SHOWER PANS | 55 | 5.0★ (9) | Canyon Lake, 20 mi away | Sat · Sun · Evenings | — |
| 5 | CBS Construction Services | 55 | 4.9★ (15) | Huntington Beach, 25 mi away | Sat · Sun · Evenings | — |
| 6 | Precision Roofing & Waterproofing | 55 | 5.0★ (52) | Irvine, 7 mi away | Sat | — |
| 7 | Antis Roofing & Waterproofing | 55 | 4.8★ (398) | Irvine, 15 mi away | — | — |
| 8 | Infinity Shower Pans | 54 | 5.0★ (17) | Whittier, 31 mi away | Sat · Sun · Evenings | — |
| 9 | DECKS & CONCRETE SOLUTIONS | 54 | 5.0★ (6) | Wildomar, 19 mi away | Sat · Sun | — |
| 10 | Horizon Roofing | 54 | 4.8★ (59) | Irvine, 15 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 in Rancho Santa Margarita
Based in Lake Elsinore, 16 mi away
Ranked #1 because of its Google rating and review volume: 4.9★ from 733 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Irvine, 7 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 53 Google reviews, listed on Google as “Concrete contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Garden Grove, 25 mi away
Ranked #3 because of its Google rating and review volume: 4.9★ from 216 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Canyon Lake, 20 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Huntington Beach, 25 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 15 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Irvine, 7 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 52 Google reviews, listed on Google as “Contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Irvine, 15 mi away
Ranked #7 because of its Google rating and review volume: 4.8★ from 398 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Whittier, 31 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Wildomar, 19 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Irvine, 15 mi away
Ranked #10 because of its Google rating and review volume: 4.8★ from 59 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Anaheim, 14 mi away
Ranked #11 because of its Google rating and review volume: 5.0★ from 31 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Adelanto, 16 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Huntington Beach, 22 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Long Beach, 37 mi away
Ranked #14 because of its Google rating and review volume: 4.8★ from 705 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Irvine, 15 mi away
Ranked #15 because of its Google rating and availability: 5.0★ from 28 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Orange, 20 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Coto De Caza, 13 mi away
Ranked #17 because of its Google rating and trade focus: 4.7★ from 36 Google reviews, listed on Google as “Roofing contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Orange, 15 mi away
Ranked #18 because of its Google rating and availability: 5.0★ from 21 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ontario, 28 mi away
Ranked #19 because of its Google rating and review volume: 4.9★ from 135 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Newport Beach, 15 mi away
Ranked #20 because of its Google rating and review volume: 4.9★ from 46 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Corona, 15 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Good Hope, 10 mi away
Ranked #22 because of its Google rating and review volume: 4.9★ from 61 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Glendora, 37 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Corona, 16 mi away
Ranked #24 because of its Google rating and review volume: 4.7★ from 57 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Placentia, 20 mi away
Ranked #25 because of its Google rating and trade focus: 4.3★ from 24 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#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 129 ranked foundation repair companies here; the rest are on their profiles.
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) | 35 mi |
| ACE Restoration & Waterproofing, Inc. | 5.0★ (2) | 21 mi |
| Best Ever Waterproofing | 5.0★ (2) | 7 mi |
| CALIFORNIA ROOF COATINGS | 4.0★ (2) | 29 mi |
| Dan’s Roofing Company Riverside | 5.0★ (2) | 24 mi |
| Divine Foundation Inspection & Retrofitting | 5.0★ (1) | 15 mi |
| Dominguez Construction | 3.0★ (2) | 37 mi |
| EFP waterproofing | 5.0★ (2) | 35 mi |
| Envision Concrete Work Mission Viejo Contractor | 5.0★ (1) | 12 mi |
| Foundation Technology | 5.0★ (1) | 15 mi |
| Freedom Chemical Corporation | 5.0★ (2) | 4 mi |
| Innovative Painting & Waterproofing | 5.0★ (2) | 26 mi |
| Integrity Plumbing | 5.0★ (561) | In Rancho Santa Margarita |
| Masterseal Corporation | 3.0★ (2) | 11 mi |
| Next Gen Design Group | In Rancho Santa Margarita | |
| Professional Foundation Repair | 5.0★ (2) | 27 mi |
| Slater Waterproofing Inc | 3.0★ (2) | 32 mi |
| Steve Fodor Construction Incorporated | In Rancho Santa Margarita | |
| Valley Shower Pans | 5.0★ (2) | 22 mi |
| X & P Construction & Home Improvement | 5.0★ (11) | In Rancho Santa Margarita |
National price ranges in USD, not adjusted for Rancho Santa Margarita. 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 |
We scored 129 Rancho Santa Margarita foundation repair 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 October 23, 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 Rancho Santa Margarita 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 |