108 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Los Altos: Attic Pros, CR Score 85/100; 4.8★ from 1,938 Google reviews; open 24/7.
Best for emergencies (open 24/7): Roof Doctors Alameda County, posts 24/7 hours; ranked #2 of 108.
Most-reviewed: Roof Doctors Contra Costa County, 188 Google reviews at 4.8★, the most of 108 ranked after Attic Pros; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
108 Los Altos foundation repair companies are ranked here by CR Score, from 8 published factors. 10 are open 24/7, 54 open Saturdays and 35 open Sundays, based on posted hours. The median Google rating is 4.8★ across 108 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Attic Pros | 85 | 4.8★ (1,938) | Oakland, 25 mi away | 24/7 | Overall |
| 2 | Roof Doctors Alameda County | 81 | 5.0★ (87) | Alameda, 21 mi away | 24/7 | Emergencies |
| 3 | Palo Alto Foundation & Concrete Contractors | 80 | 4.8★ (51) | Palo Alto, 3 mi away | Sat · Sun · Evenings | — |
| 4 | ELM Roofing Contractors | 79 | 4.9★ (153) | San Mateo, 15 mi away | Sat · Sun | — |
| 5 | EM Energy & Air | 79 | 4.9★ (101) | Campbell, 12 mi away | Sat · Sun · Evenings | — |
| 6 | Roof Doctors Contra Costa County | 79 | 4.8★ (188) | Alamo, 36 mi away | 24/7 | Most reviews |
| 7 | Groundworks | 79 | 4.6★ (162) | Sunnyvale, 6 mi away | Sat · Sun · Evenings | — |
| 8 | Waterproofing Associates | 78 | 4.6★ (22) | Santa Clara, 9 mi away | Sat · Sun | — |
| 9 | Platinum Roofing And Retro-Fit | 78 | 5.0★ (45) | Milpitas, 12 mi away | Sat · Sun · Evenings | — |
| 10 | Q7 Roofing & Waterproofing Inc. | 78 | 4.7★ (18) | San Jose, 12 mi away | Sat · Sun | — |
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 review volume: 4.8★ from 1,938 Google reviews, the most Google reviews on this list (1,938).
Based in Alameda, 21 mi away
Ranked #2 because of its Google rating and availability: 5.0★ from 87 Google reviews, open 24/7.
Based in Palo Alto, 3 mi away
Ranked #3 because of its Google rating and availability: 4.8★ from 51 Google reviews, open 7 days a week.
Based in San Mateo, 15 mi away
Ranked #4 because of its Google rating and availability: 4.9★ from 153 Google reviews, open 7 days a week.
Based in Campbell, 12 mi away
Ranked #5 because of its Google rating and availability: 4.9★ from 101 Google reviews, open 7 days a week.
Based in Alamo, 36 mi away
Ranked #6 because of its Google rating and availability: 4.8★ from 188 Google reviews, open 24/7.
Based in Sunnyvale, 6 mi away
Ranked #7 because of its Google rating and availability: 4.6★ from 162 Google reviews, open 7 days a week.
Based in Santa Clara, 9 mi away
Ranked #8 because of its Google rating and availability: 4.6★ from 22 Google reviews, open 7 days a week.
Based in Milpitas, 12 mi away
Ranked #9 because of its Google rating and availability: 5.0★ from 45 Google reviews, open 7 days a week.
Based in San Jose, 12 mi away
Ranked #10 because of its Google rating and availability: 4.7★ from 18 Google reviews, open 7 days a week.
Based in Campbell, 12 mi away
Ranked #11 because of its Google rating and availability: 5.0★ from 35 Google reviews, open 7 days a week.
Based in Redwood City, 12 mi away
Ranked #12 because of its Google rating and availability: 5.0★ from 6 Google reviews, open 24/7.
Based in San Mateo, 16 mi away
Ranked #13 because of its Google rating and availability: 4.9★ from 47 Google reviews, open 7 days a week.
Based in Alamo, 16 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 62 Google reviews, listed on Google as “Concrete contractor”.
Based in San Leandro, 24 mi away
Ranked #15 because of its Google rating and availability: 4.8★ from 17 Google reviews, open 24/7.
Based in San Francisco, 28 mi away
Ranked #16 because of its Google rating and availability: 4.9★ from 98 Google reviews, open 24/7.
Based in Dublin, 38 mi away
Ranked #17 because of its Google rating and availability: 5.0★ from 33 Google reviews, open 24/7.
Based in San Jose, 12 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 172 Google reviews, listed on Google as “Roofing contractor”.
Based in San Francisco, 33 mi away
Ranked #19 because of its Google rating and availability: 4.7★ from 19 Google reviews, open 24/7.
Based in Walnut Creek, 36 mi away
Ranked #20 because of its Google rating and availability: 5.0★ from 3 Google reviews, open 24/7.
Based in Santa Clara, 7 mi away
Ranked #21 because of its Google rating and review volume: 4.8★ from 63 Google reviews, 63 Google reviews.
Based in San Jose, 15 mi away
Ranked #22 because of its Google rating and availability: 5.0★ from 8 Google reviews, open 7 days a week.
Based in Campbell, 13 mi away
Ranked #23 because of its Google rating and availability: 5.0★ from 7 Google reviews, open 7 days a week.
Based in San Francisco, 31 mi away
Ranked #24 because of its Google rating and availability: 5.0★ from 5 Google reviews, open 24/7.
Based in San Jose, 13 mi away
Ranked #25 because of its Google rating and review volume: 4.8★ from 53 Google reviews, 53 Google reviews.
National price ranges in USD, not adjusted for Los Altos. 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 108 Los Altos 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 Altos 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 |