83/100CR Score
Ranked #1 because of its Google rating and availability: 4.9★ from 208 Google reviews, open 24/7.
- 4.9★ from 208 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 822 Joshua Dr, Windsor, CA 95492
Best Foundation Repair Companies in Sonoma, CA (2026)
81 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Sonoma: Roof Doctors Sonoma County, CR Score 83/100; 4.9★ from 208 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Sustainable Living Builders, Inc, posts 24/7 hours; ranked #2 of 81.
- 3
Most-reviewed: Groundworks, 575 Google reviews at 4.8★, the most of 81 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
81 Sonoma foundation repair companies are ranked here by CR Score, from 8 published factors. 9 are open 24/7, 42 open Saturdays and 24 open Sundays, based on posted hours. The median Google rating is 4.8★ across 81 rated businesses.
Top 10 foundation repair companies in Sonoma at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Roof Doctors Sonoma County | 83 | 4.9★ (208) | Windsor, 26 mi away | 24/7 | Overall |
| 2 | Sustainable Living Builders, Inc | 82 | 4.9★ (84) | Sebastopol, 18 mi away | 24/7 | Emergencies |
| 3 | Groundworks | 82 | 4.8★ (575) | Fairfield, 21 mi away | Sat · Sun · Evenings | Most reviews |
| 4 | Roof Doctors Contra Costa County | 80 | 4.8★ (188) | Alamo, 37 mi away | 24/7 | — |
| 5 | Modern Summit Roofing Contractor | 79 | 5.0★ (47) | Petaluma, 12 mi away | Sat · Sun · Evenings | — |
| 6 | Roof Doctors Marin County | 79 | 4.6★ (40) | Fairfax, 21 mi away | 24/7 | — |
| 7 | Gotham Home Services | 79 | 5.0★ (33) | Dublin, 29 mi away | 24/7 | — |
| 8 | Under The House. | 79 | 5.0★ (62) | Santa Rosa, 20 mi away | Sat · Sun · Evenings | — |
| 9 | ROOFWORX Inc. – Licensed Roofing Contractor in San Francisco | 76 | 4.9★ (98) | San Francisco, 39 mi away | 24/7 | — |
| 10 | Pablo Restorations Roofing | 76 | 5.0★ (29) | Richmond, 25 mi away | Sat · Sun | — |
The 81 best foundation repair companies in Sonoma, 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 Sebastopol, 18 mi away
82/100CR ScoreRanked #2 because of its Google rating and availability: 4.9★ from 84 Google reviews, open 24/7.
- 4.9★ from 84 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4399 Gravenstein Hwy S, Sebastopol, CA 95472
#3 Groundworks
Based in Fairfield, 21 mi away
82/100CR ScoreRanked #3 because of its Google rating and review volume: 4.8★ from 575 Google reviews, the most Google reviews on this list (575).
- 4.8★ from 575 Google reviews
- Hours
- Mon–Fri 4 AM–8 PM · Sat 5 AM–8 PM · Sun 7 AM–8 PM
- Address
- 2333 Courage Dr STE C, Fairfield, CA 94533
Based in Alamo, 37 mi away
80/100CR ScoreRanked #4 because of its Google rating and availability: 4.8★ from 188 Google reviews, open 24/7.
- 4.8★ from 188 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Petaluma, 12 mi away
79/100CR ScoreRanked #5 because of its Google rating and availability: 5.0★ from 47 Google reviews, open 7 days a week.
- 5.0★ from 47 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
Based in Fairfax, 21 mi away
79/100CR ScoreRanked #6 because of its Google rating and availability: 4.6★ from 40 Google reviews, open 24/7.
- 4.6★ from 40 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Dublin, 29 mi away
79/100CR ScoreRanked #7 because of its Google rating and availability: 5.0★ from 33 Google reviews, open 24/7.
- 5.0★ from 33 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Santa Rosa, 20 mi away
79/100CR ScoreRanked #8 because of its Google rating and availability: 5.0★ from 62 Google reviews, open 7 days a week.
- 5.0★ from 62 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 1133 Piner Creek Dr, Santa Rosa, CA 95401
Based in San Francisco, 39 mi away
76/100CR ScoreRanked #9 because of its Google rating and availability: 4.9★ from 98 Google reviews, open 24/7.
- 4.9★ from 98 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1485 Bayshore Blvd 182 suite 418, San Francisco, CA 94124
Based in Richmond, 25 mi away
76/100CR ScoreRanked #10 because of its Google rating and availability: 5.0★ from 29 Google reviews, open 7 days a week.
- 5.0★ from 29 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat 7 AM–3 PM · Sun 9 AM–3 PM
- Address
- 2124 Hellings Ave, Richmond, CA 94801
Based in San Francisco, 35 mi away
75/100CR ScoreRanked #11 because of its Google rating and availability: 4.7★ from 19 Google reviews, open 24/7.
- 4.7★ from 19 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3736 Geary Blvd, San Francisco, CA 94118
Based in Walnut Creek, 34 mi away
75/100CR ScoreRanked #12 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
- 1990 N California Blvd 8th Floor #1270, Walnut Creek, CA 94596
Based in Santa Rosa, 15 mi away
74/100CR ScoreRanked #13 because of its Google rating and availability: 4.5★ from 27 Google reviews, open 7 days a week.
- 4.5★ from 27 Google reviews
- Hours
- Mon–Sun 9 AM–7 PM
- Address
- 111 Knolls Ln, Santa Rosa, CA 95404
#14 Aleman Concrete
Based in Santa Rosa, 17 mi away
74/100CR ScoreRanked #14 because of its Google rating and review volume: 5.0★ from 27 Google reviews, 27 Google reviews.
- 5.0★ from 27 Google reviews
- Hours
- Mon–Sat 6 AM–6:30 PM · Sun closed
- Address
- 5023 Algiers Ave, Santa Rosa, CA 95409
Based in Cotati, 12 mi away
74/100CR ScoreRanked #15 because of its Google rating and availability: 5.0★ from 19 Google reviews, open Saturdays until 5 PM.
- 5.0★ from 19 Google reviews
- Hours
- Mon–Fri 8 AM–7 PM · Sat 8 AM–5 PM · Sun closed
#16 Geico Builders
Based in Oakland, 35 mi away
73/100CR ScoreRanked #16 because of its Google rating and review volume: 5.0★ from 87 Google reviews, 87 Google reviews.
- 5.0★ from 87 Google reviews
- Hours
- Mon–Fri 9 AM–7 PM · Sat closed · Sun 9 AM–6 PM
- Address
- 1901 Harrison St Ste 1100, Oakland, CA 94612
Based in San Francisco, 39 mi away
73/100CR ScoreRanked #17 because of its Google rating and availability: 5.0★ from 5 Google reviews, open 24/7.
- 5.0★ from 5 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 15 Buckingham Way # 203, San Francisco, CA 94132
Based in San Francisco, 34 mi away
73/100CR ScoreRanked #18 because of its Google rating and availability: 5.0★ from 16 Google reviews, open 7 days a week.
- 5.0★ from 16 Google reviews
- Hours
- Mon–Sun 7 AM–10 PM
- Address
- 1937 Lombard St Unit A, San Francisco, CA 94123
Based in Santa Rosa, 16 mi away
72/100CR ScoreRanked #19 because of its Google rating and review volume: 4.9★ from 117 Google reviews, 117 Google reviews.
- 4.9★ from 117 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 183 Oceanic Way, Santa Rosa, CA 95407
Based in Pleasant Hill, 33 mi away
72/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.7★ from 48 Google reviews, listed on Google as “Concrete contractor”.
- 4.7★ from 48 Google reviews
- Hours
- Mon–Thu 5 AM–9:30 PM · Fri 5 AM–4:30 PM · Sat closed · Sun 5 AM–9:30 PM
- Address
- 3478 Buskirk Ave, Pleasant Hill, CA 94523
Based in Benicia, 23 mi away
72/100CR ScoreRanked #21 because of its Google rating and review volume: 5.0★ from 23 Google reviews, 23 Google reviews.
- 5.0★ from 23 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 10 AM–5 PM · Sun closed
- Address
- 226 W J St, Benicia, CA 94510
Based in Novato, 16 mi away
71/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.2★ from 5 Google reviews, listed on Google as “Waterproofing service”.
- 4.2★ from 5 Google reviews
- Hours
- Mon–Fri 8:30 AM–4:30 PM · Sat–Sun closed
- Address
- 67 Galli Dr Suite C, Novato, CA 94949
Based in Santa Rosa, 16 mi away
71/100CR ScoreRanked #23 because of its Google rating and review volume: 5.0★ from 57 Google reviews, 57 Google reviews.
- 5.0★ from 57 Google reviews
- Hours
- Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
- Address
- 3100 Dutton Ave Ste. 142E, Santa Rosa, CA 95407
Based in Alameda, 38 mi away
71/100CR ScoreRanked #24 because of its Google rating and availability: 5.0★ from 11 Google reviews, open 7 days a week.
- 5.0★ from 11 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 1700 Park St #75, Alameda, CA 94501
Based in Fremont, 29 mi away
71/100CR ScoreRanked #25 because of its Google rating and availability: 5.0★ from 5 Google reviews, open 7 days a week.
- 5.0★ from 5 Google reviews
- Hours
- Mon–Sun 7 AM–6 PM
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 81 ranked foundation repair companies here; the rest are on their profiles.
Also serving Sonoma
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&J Quality General Construction Services | 5.0★ (2) | 26 mi |
| Acecal Waterproofing & Decking | 1.0★ (1) | 8 mi |
| Adolfo Mendoza Concrete Construction | 1.0★ (1) | In Sonoma |
| Berger Concrete & General Engineering | 4.0★ (11) | In Sonoma |
| Cal Cade Construction | 5.0★ (2) | 36 mi |
| Certified Specialists, Inc. | 5.0★ (2) | 16 mi |
| Elite Roofing & Waterproofing | 3.0★ (2) | 35 mi |
| Foundation Repair of CA | 5.0★ (1) | 9 mi |
| Golden Gate Termite & Construction | 5.0★ (2) | 38 mi |
| Green Giant Landscape Design | 5.0★ (3) | In Sonoma |
| KH Waterproofing And Restoration | 5.0★ (2) | 33 mi |
| Lone Mountain Homes Inc | 5.0★ (2) | 35 mi |
| Mt Diablo Flooring Systems Inc | 5.0★ (2) | 37 mi |
| North Coast Waterproofing Inc | In Sonoma | |
| R.A. Wilson Construction | 5.0★ (23) | In Sonoma |
| Richards Concrete Construction | 4.5★ (4) | In Sonoma |
| Soodo Construction | 5.0★ (2) | 33 mi |
| The Restoration & Waterproofing Co., Inc. | 5.0★ (2) | 35 mi |
| Windsor Waterproofing | 5.0★ (2) | 29 mi |
| Wise Roofing Solutions of Concord | 4.0★ (2) | 36 mi |
How much do foundation repair companies cost in Sonoma?
National price ranges in USD, not adjusted for Sonoma. 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 Sonoma foundation repair companies
We scored 81 Sonoma 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 Sonoma 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 Sonoma: frequently asked questions
Who is the best foundation repair company in Sonoma?
By CR Score, the highest-ranked foundation repair company in Sonoma, CA is Roof Doctors Sonoma County with a CR Score of 83/100. It has 4.9★ from 208 Google reviews. It is open 24/7. Sustainable Living Builders, Inc (#2) and Groundworks (#3) follow. We ranked 81 foundation repair companies on 8 factors, last updated October 22, 2026.
How many foundation repair companies are there in Sonoma?
ContractorsRanked ranks 81 foundation repair companies serving Sonoma, CA. Another 20 within 40 mi are listed but not ranked yet. Counts are as of October 2026.
Which foundation repair companies in Sonoma are open 24/7?
9 ranked foundation repair companies in Sonoma post 24/7 hours. The highest-ranked are Roof Doctors Sonoma County (#1), Sustainable Living Builders, Inc (#2) and Roof Doctors Contra Costa County (#4). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which foundation repair companies in Sonoma work on weekends?
42 of 81 ranked foundation repair companies post Saturday hours and 24 post Sunday hours. The highest-ranked open Saturdays are Roof Doctors Sonoma County (#1), Sustainable Living Builders, Inc (#2) and Groundworks (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does foundation repair cost in Sonoma?
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 Sonoma. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Sonoma foundation repair companies have?
The median Google rating among 81 rated foundation repair companies in Sonoma is 4.8★, with a median of 13 reviews. Groundworks has the most, 575 reviews, and ranks #3. 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 Sonoma count in this ranking?
Yes, if they are within 40 mi of the Sonoma 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 Sonoma
- October 2026: CR Scores recalculated for 81 foundation repair companies serving Sonoma.
More foundation repair companies and Sonoma pages
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Other trades in Sonoma
- Roofers in Sonoma412 ranked
- Plumbers in Sonoma297 ranked
- Electricians in Sonoma175 ranked
- HVAC contractors in Sonoma195 ranked
- General contractors in Sonoma333 ranked
- Painters in Sonoma65 ranked
- Landscapers in Sonoma78 ranked
- Handymen in Sonoma16 ranked
- Kitchen remodelers in Sonoma149 ranked
- Bathroom remodelers in Sonoma140 ranked
- Flooring contractors in Sonoma103 ranked
- Tile installers in Sonoma18 ranked
- Drywall contractors in Sonoma13 ranked
- Concrete contractors in Sonoma125 ranked
- Fence contractors in Sonoma72 ranked
- Deck builders in Sonoma51 ranked
- Siding contractors in Sonoma67 ranked
- Window installers in Sonoma185 ranked
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