62/100CR Score
Ranked #1 because of its Google rating and review volume: 5.0★ from 258 Google reviews.
- 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 Altadena, CA (2026)
242 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Altadena: Green Ladder Roofing and Waterproofing, CR Score 62/100; 5.0★ from 258 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Professional Foundation Repair, posts 24/7 hours; ranked #2 of 242.
- 15
Most-reviewed: Home Renew 360 Roofing I Construction I Energy, 705 Google reviews at 4.8★, the most of 242 ranked; ranked #15.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
242 Altadena foundation repair companies are ranked here by CR Score, from ten published factors. 34 are open 24/7, 155 open Saturdays and 105 open Sundays, based on posted hours. The median Google rating is 5.0★ across 242 rated businesses.
Most of this list also appears on the Foundation repair companies in Glendale ranking. See Foundation repair companies in Glendale
Top 10 foundation repair companies in Altadena at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Green Ladder Roofing and Waterproofing | 62 | 5.0★ (258) | Pasadena, 3 mi away | 24/7 | Overall |
| 2 | Professional Foundation Repair | 57 | 4.9★ (216) | Garden Grove, 29 mi away | 24/7 | Emergencies |
| 3 | Waterproofing N Roofing - IHC Group | 56 | 5.0★ (44) | Los Angeles, 20 mi away | Sun · Evenings | — |
| 4 | Infinity Shower Pans | 56 | 5.0★ (17) | Whittier, 20 mi away | Sat · Sun · Evenings | — |
| 5 | Green Advisor Inc. | 56 | 5.0★ (253) | Los Angeles, 15 mi away | Sat · Sun · Evenings | — |
| 6 | California Decking & Waterproofing | 56 | 4.6★ (48) | Burbank, 13 mi away | Sat | — |
| 7 | Surfacing And Waterproofing | 56 | 5.0★ (55) | Canoga Park, 27 mi away | Sun · Evenings | — |
| 8 | Solid Foundations Concrete | 56 | 4.7★ (55) | Van Nuys, 18 mi away | 24/7 | — |
| 9 | Pro-Seal Systems | 56 | 5.0★ (9) | Glendora, 16 mi away | Sat · Sun | — |
| 10 | LA Foundation Repair Los Angeles | 55 | 5.0★ (34) | Beverly Hills, 20 mi away | 24/7 | — |
The 242 best foundation repair companies in Altadena, 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 Garden Grove, 29 mi away
57/100CR ScoreRanked #2 because of its Google rating and review volume: 4.9★ from 216 Google reviews.
- 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 Los Angeles, 20 mi away
56/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 44 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 44 Google reviews
- Hours
- Mon–Thu 6 AM–7 PM · Fri 6 AM–2 PM · Sat closed · Sun 7 AM–7 PM
- Address
- 7516 Valjean Ave, Los Angeles, CA 91406
Based in Whittier, 20 mi away
56/100CR ScoreRanked #4 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 Los Angeles, 15 mi away
56/100CR ScoreRanked #5 because of its Google rating and review volume: 5.0★ from 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 Burbank, 13 mi away
56/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.6★ from 48 Google reviews, listed on Google as “Waterproofing service”.
- 4.6★ from 48 Google reviews
- Hours
- Mon–Fri 8 AM–3 PM · Sat 9 AM–4 PM · Sun closed
- Address
- 10771 Sherman Way, Sun Valley, CA 91352
Based in Canoga Park, 27 mi away
56/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 55 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 55 Google reviews
- Hours
- Mon–Thu 6 AM–7 PM · Fri 6 AM–2 PM · Sat closed · Sun 7 AM–7 PM
- Address
- 21304 Hart St, Canoga Park, CA 91303
Based in Van Nuys, 18 mi away
56/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.7★ from 55 Google reviews, listed on Google as “General contractor”.
- 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 Glendora, 16 mi away
56/100CR ScoreRanked #9 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 Beverly Hills, 20 mi away
55/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 34 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 34 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Encino, 24 mi away
55/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.8★ from 62 Google reviews, listed on Google as “General contractor”.
- 4.8★ from 62 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 18740 Ventura Blvd, Tarzana, CA 91356
Based in Los Angeles, 11 mi away
55/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Roofing contractor”.
- 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 Glendale, 8 mi away
55/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.7★ from 10 Google reviews, listed on Google as “Waterproofing service”.
- 4.7★ from 10 Google reviews
- Hours
- Mon–Sat 8 AM–6 PM · Sun closed
- Address
- 611 N Brand Blvd Suite 1300, Glendale, CA 91203
Based in Los Angeles, 9 mi away
55/100CR ScoreRanked #14 because of its Google rating and review volume: 5.0★ from 100 Google reviews.
- 5.0★ from 100 Google reviews
- Hours
- Mon–Sun 7 AM–10 PM
- Address
- 3108 Glendale Blvd, Los Angeles, CA 90039
Based in Long Beach, 25 mi away
55/100CR ScoreRanked #15 because of its Google rating and review volume: 4.8★ from 705 Google reviews, the most in Altadena.
- 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 La Crescenta-Montrose, 7 mi away
55/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.7★ from 12 Google reviews, listed on Google as “Demolition contractor”.
- 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 Pasadena, 3 mi away
55/100CR ScoreRanked #17 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 Sunland, 12 mi away
55/100CR ScoreRanked #18 because of its Google rating and review volume: 4.8★ from 194 Google reviews.
- 4.8★ from 194 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat 9 AM–12 PM · Sun 8 AM–12 PM
- Address
- 8334 Foothill Blvd, Sunland, CA 91040
Based in Burbank, 12 mi away
55/100CR ScoreRanked #19 because of its Google rating and review volume: 4.9★ from 251 Google reviews.
- 4.9★ from 251 Google reviews
- Hours
- Mon–Fri 9 AM–5 PM · Sat–Sun closed
- Address
- 2411 Empire Ave, Burbank, CA 91504
Based in Los Angeles, 8 mi away
55/100CR ScoreRanked #20 because of its Google rating and review volume: 4.9★ from 92 Google reviews.
- 4.9★ from 92 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 124 E Avenue 40, Los Angeles, CA 90031
Based in Northridge, 23 mi away
55/100CR ScoreRanked #21 because of its Google rating and review volume: 5.0★ from 420 Google reviews.
- 5.0★ from 420 Google reviews
- Hours
- Mon–Thu 9 AM–6 PM · Fri 9 AM–5 PM · Sat–Sun closed
- Address
- 18327 Napa St, Northridge, CA 91325
Based in Burbank, 20 mi away
54/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 60 Google reviews, listed on Google as “Concrete contractor”.
- 4.9★ from 60 Google reviews
- Hours
- Mon–Sun 10 AM–6 PM
Based in Burbank, 12 mi away
54/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 8 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 9 AM–5 PM · Sun closed
- Address
- 7752 Vía Capri, Burbank, CA 91504
Based in Van Nuys, 20 mi away
54/100CR ScoreRanked #24 because of its Google rating and review volume: 5.0★ from 269 Google reviews.
- 5.0★ from 269 Google reviews
- Hours
- Mon–Fri 9 AM–5:30 PM · Sat–Sun closed
- Address
- 16116 Leadwell St, Van Nuys, CA 91406
Based in Burbank, 10 mi away
54/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 51 Google reviews, listed on Google as “General contractor”.
- 4.9★ from 51 Google reviews
- Hours
- Mon 5 AM–9 PM · Tue 7 AM–9 PM · Wed–Sat 5 AM–9 PM · Sun closed
- Address
- 280 E Palm Ave, Burbank, CA 91502
How much do foundation repair companies cost in Altadena?
National price ranges in USD, not adjusted for Altadena. 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 Altadena foundation repair companies
We scored 242 Altadena 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 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 Altadena 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 |
Foundation repair companies in Altadena: frequently asked questions
Who is the best foundation repair company in Altadena?
By CR Score, the highest-ranked foundation repair company in Altadena, CA is Green Ladder Roofing and Waterproofing with a CR Score of 62/100. It has 5.0★ from 258 Google reviews. It is open 24/7. Professional Foundation Repair (#2) and Waterproofing N Roofing - IHC Group (#3) follow. We ranked 242 foundation repair companies on ten factors, last updated October 22, 2026.
How many foundation repair companies are there in Altadena?
ContractorsRanked ranks 242 foundation repair companies serving Altadena, CA. Counts are as of October 2026.
Which foundation repair companies in Altadena are open 24/7?
34 ranked foundation repair companies in Altadena post 24/7 hours. The highest-ranked are Green Ladder Roofing and Waterproofing (#1), Professional Foundation Repair (#2) and Solid Foundations Concrete (#8). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which foundation repair companies in Altadena work on weekends?
155 of 242 ranked foundation repair companies post Saturday hours and 105 post Sunday hours. The highest-ranked open Saturdays are Green Ladder Roofing and Waterproofing (#1), Professional Foundation Repair (#2) and Infinity Shower Pans (#4). Posted hours are office hours; crews may book weekend jobs separately.
How much does foundation repair cost in Altadena?
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 Altadena. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Altadena foundation repair companies have?
The median Google rating among 242 rated foundation repair companies in Altadena is 5.0★, with a median of 15 reviews. Home Renew 360 Roofing I Construction I Energy has the most, 705 reviews, and ranks #15. 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 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 foundation repair companies outside Altadena count in this ranking?
Yes, if they are within 40 mi of the Altadena 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 Altadena
- October 2026: CR Scores recalculated for 242 foundation repair companies serving Altadena.
- October 2026: 1 duplicate listing merged.
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