85/100CR 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 Cotati, CA (2026)
44 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Cotati: Roof Doctors Sonoma County, CR Score 85/100; 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 44.
- 5
Most-reviewed: Groundworks, 575 Google reviews at 4.8★, the most of 44 ranked; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
44 Cotati foundation repair companies are ranked here by CR Score, from 8 published factors. 4 are open 24/7, 24 open Saturdays and 12 open Sundays, based on posted hours. The median Google rating is 4.8★ across 44 rated businesses.
Top 10 foundation repair companies in Cotati at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Roof Doctors Sonoma County | 85 | 4.9★ (208) | Windsor, 16 mi away | 24/7 | Overall |
| 2 | Sustainable Living Builders, Inc | 85 | 4.9★ (84) | Sebastopol, 4 mi away | 24/7 | Emergencies |
| 3 | Under The House. | 81 | 5.0★ (62) | Santa Rosa, 9 mi away | Sat · Sun · Evenings | — |
| 4 | Modern Summit Roofing Contractor | 81 | 5.0★ (47) | Petaluma, 5 mi away | Sat · Sun · Evenings | — |
| 5 | Groundworks | 80 | 4.8★ (575) | Fairfield, 35 mi away | Sat · Sun · Evenings | Most reviews |
| 6 | Roof Doctors Marin County | 79 | 4.6★ (40) | Fairfax, 25 mi away | 24/7 | — |
| 7 | Gotham Home Services | 78 | 5.0★ (33) | Dublin, 35 mi away | 24/7 | — |
| 8 | Concrete Contractor Rohnert Park | 76 | 5.0★ (19) | Cotati | Sat · Evenings | — |
| 9 | Rich’s Mobile Home Service | 76 | 4.5★ (27) | Santa Rosa, 7 mi away | Sat · Sun · Evenings | — |
| 10 | Aleman Concrete | 75 | 5.0★ (27) | Santa Rosa, 10 mi away | Sat · Evenings | — |
The 44 best foundation repair companies in Cotati, 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, 4 mi away
85/100CR 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
Based in Santa Rosa, 9 mi away
81/100CR ScoreRanked #3 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 Petaluma, 5 mi away
81/100CR ScoreRanked #4 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
#5 Groundworks
Based in Fairfield, 35 mi away
80/100CR ScoreRanked #5 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 Fairfax, 25 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, 35 mi away
78/100CR 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 Cotati
76/100CR ScoreRanked #8 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
Based in Santa Rosa, 7 mi away
76/100CR ScoreRanked #9 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
#10 Aleman Concrete
Based in Santa Rosa, 10 mi away
75/100CR ScoreRanked #10 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 Richmond, 33 mi away
75/100CR ScoreRanked #11 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 Santa Rosa, 4 mi away
74/100CR ScoreRanked #12 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 Santa Rosa, 5 mi away
73/100CR ScoreRanked #13 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 Santa Rosa, 8 mi away
73/100CR ScoreRanked #14 because of its Google rating and availability: 5.0★ from 8 Google reviews, open Saturdays until 5 PM.
- 5.0★ from 8 Google reviews
- Hours
- Mon–Sat 6 AM–5 PM · Sun closed
- Address
- 172 Leisure Park Cir, Santa Rosa, CA 95401
Based in Windsor, 17 mi away
72/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Concrete contractor”.
- 5.0★ from 27 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 9472 Wellington Cir, Windsor, CA 95492
Based in San Francisco, 39 mi away
72/100CR ScoreRanked #16 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
#17 Division Seven
Based in Petaluma, 7 mi away
71/100CR ScoreRanked #17 because of its Google rating and trade focus: 3.0★ from 4 Google reviews, listed on Google as “Waterproofing service”.
- 3.0★ from 4 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 22 Lakeville St, Petaluma, CA 94952
Based in Novato, 20 mi away
71/100CR ScoreRanked #18 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 Lucas Valley-Marinwood, 33 mi away
71/100CR ScoreRanked #19 because of its Google rating and availability: 4.4★ from 7 Google reviews, open 7 days a week.
- 4.4★ from 7 Google reviews
- Hours
- Mon–Sat 7 AM–6 PM · Sun 9 AM–4 PM
Based in Petaluma, 15 mi away
71/100CR ScoreRanked #20 because of its Google rating and availability: 4.6★ from 7 Google reviews, open Saturdays until 6 PM.
- 4.6★ from 7 Google reviews
- Hours
- Mon–Sat 7 AM–6 PM · Sun closed
Based in Fremont, 35 mi away
71/100CR ScoreRanked #21 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
Based in San Rafael, 26 mi away
71/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 4 Google reviews
- Hours
- Mon–Sat 8 AM–5 PM · Sun closed
- Address
- 710 C St 202, Suite 202, San Rafael, CA 94901
Based in Santa Rosa, 8 mi away
70/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “General contractor”.
- 4.0★ from 4 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat 10 AM–2 PM · Sun closed
- Address
- 717 Blair Pl, Santa Rosa, CA 95401
Based in Benicia, 35 mi away
70/100CR ScoreRanked #24 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
#25 SF Pro Roofing
Based in Daly City, 35 mi away
70/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Roofing contractor”.
- 5.0★ from 20 Google reviews
- Hours
- Mon–Sat 8 AM–5 PM · Sun closed
All 44 foundation repair companies
#1 to #25 are shown in full above. Here are #26 to #44, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | ER HOME IMPROVEMENTS & GENERAL CONSTRUCTION INC, | 69 | 5.0★ (14) | 38 mi |
| 27 | Pro-Tech Waterproofing Inc | 69 | 4.3★ (3) | 34 mi |
| 28 | HouseSavers & DeckMasters | 68 | 4.9★ (41) | 28 mi |
| 29 | NorCal Foundation Support | 68 | 4.1★ (31) | 25 mi |
| 30 | I Construction & Structural Inc | 68 | 4.8★ (30) | 23 mi |
| 31 | Universe Construction | 68 | 4.4★ (19) | 38 mi |
| 32 | Cortlandt Roofing | 68 | 4.1★ (9) | 6 mi |
| 33 | Mason Plumbing | 67 | 4.9★ (10) | 18 mi |
| 34 | Cartelli Painting & Waterproofing Company | 67 | 4.8★ (22) | 39 mi |
| 35 | Urban Waterproofing Inc | 67 | 4.0★ (8) | 24 mi |
| 36 | Northern Pacific Roofing, Inc. | 67 | 4.7★ (30) | 26 mi |
| 37 | The concrete of god / Concrete Services in Richmond and San Francisco Bay Area, California | 66 | 5.0★ (5) | 39 mi |
| 38 | Carty Perez Construction Inc. | 66 | 4.0★ (5) | 38 mi |
| 39 | ARC Restoration & Waterproofing, Inc. | 65 | 3.9★ (7) | 34 mi |
| 40 | Brendan Roofing and Waterproofing | 65 | 4.0★ (6) | 32 mi |
| 41 | The Roofer | 65 | 4.2★ (5) | 24 mi |
| 42 | Perma Level | 64 | 5.0★ (5) | 29 mi |
| 43 | High End Development Inc | 63 | 3.7★ (22) | 36 mi |
| 44 | Tarantino's Yardscapes | 62 | 3.6★ (5) | 27 mi |
Also serving Cotati
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) | 33 mi |
| Acecal Waterproofing & Decking | 1.0★ (1) | 21 mi |
| Adams Roofing | In Cotati | |
| AGD General Engineering | In Cotati | |
| Blind Repair Service | 4.0★ (8) | In Cotati |
| Certified Specialists, Inc. | 5.0★ (2) | 5 mi |
| DVL Construction Corporation | In Cotati | |
| DWC Waterproofing | 5.0★ (1) | 24 mi |
| Elevated Comfort | 4.9★ (949) | In Cotati |
| Empower Building Solutions Inc. | 5.0★ (15) | In Cotati |
| FBI: Manufactured Home and Modular Building Setup & Installation | In Cotati | |
| Foundation Repair of CA | 5.0★ (1) | 5 mi |
| Golden Gate Termite & Construction | 5.0★ (2) | 38 mi |
| Herrera's Concrete | In Cotati | |
| Hulbert Heating & Air Conditioning Inc | 5.0★ (54) | In Cotati |
| Osbaldo Construction Inc | In Cotati | |
| Ray’s Rescue Plumbing | 5.0★ (37) | In Cotati |
| The Restoration & Waterproofing Co., Inc. | 5.0★ (2) | 40 mi |
| Thoroughbred WaterProofing | 5.0★ (1) | 7 mi |
| Windsor Waterproofing | 5.0★ (2) | 35 mi |
How much do foundation repair companies cost in Cotati?
National price ranges in USD, not adjusted for Cotati. 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 Cotati foundation repair companies
We scored 44 Cotati 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 Cotati 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 Cotati: frequently asked questions
Who is the best foundation repair company in Cotati?
By CR Score, the highest-ranked foundation repair company in Cotati, CA is Roof Doctors Sonoma County with a CR Score of 85/100. It has 4.9★ from 208 Google reviews. It is open 24/7. Sustainable Living Builders, Inc (#2) and Under The House. (#3) follow. We ranked 44 foundation repair companies on 8 factors, last updated October 22, 2026.
How many foundation repair companies are there in Cotati?
ContractorsRanked ranks 44 foundation repair companies serving Cotati, CA. 1 of them is based in Cotati; 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 Cotati are open 24/7?
4 ranked foundation repair companies in Cotati post 24/7 hours. The highest-ranked are Roof Doctors Sonoma County (#1), Sustainable Living Builders, Inc (#2) and Roof Doctors Marin County (#6). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which foundation repair companies in Cotati work on weekends?
24 of 44 ranked foundation repair companies post Saturday hours and 12 post Sunday hours. The highest-ranked open Saturdays are Roof Doctors Sonoma County (#1), Sustainable Living Builders, Inc (#2) and Under The House. (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does foundation repair cost in Cotati?
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 Cotati. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Cotati foundation repair companies have?
The median Google rating among 44 rated foundation repair companies in Cotati is 4.8★, with a median of 19 reviews. Groundworks has the most, 575 reviews, and ranks #5. 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 Cotati count in this ranking?
Yes, if they are within 40 mi of the Cotati 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 Cotati
- October 2026: CR Scores recalculated for 44 foundation repair companies serving Cotati.
More foundation repair companies and Cotati pages
Foundation repair companies near Cotati
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- Foundation repair companies in Santa Rosa, CA30 ranked
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- Foundation repair companies in Boyes Hot Springs, CA73 ranked
- Foundation repair companies in Larkfield-Wikiup, CA25 ranked
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- Foundation repair companies in Novato, CA96 ranked
Other trades in Cotati
- Roofers in Cotati212 ranked
- Plumbers in Cotati227 ranked
- Electricians in Cotati140 ranked
- HVAC contractors in Cotati132 ranked
- General contractors in Cotati226 ranked
- Painters in Cotati98 ranked
- Landscapers in Cotati86 ranked
- Handymen in Cotati34 ranked
- Kitchen remodelers in Cotati108 ranked
- Bathroom remodelers in Cotati97 ranked
- Flooring contractors in Cotati71 ranked
- Tile installers in Cotati32 ranked
- Drywall contractors in Cotati21 ranked
- Concrete contractors in Cotati83 ranked
- Fence contractors in Cotati53 ranked
- Deck builders in Cotati44 ranked
- Siding contractors in Cotati36 ranked
- Window installers in Cotati96 ranked
- Gutter installers in Cotati63 ranked
- Insulation contractors in Cotati19 ranked
- Solar installers in Cotati118 ranked
- Garage door repair companies in Cotati31 ranked
- Tree services in Cotati110 ranked
- Masonry contractors in Cotati51 ranked
- Water damage restoration companies in Cotati121 ranked
- Home builders in Cotati147 ranked
- Demolition contractors in Cotati22 ranked
- All contractors in Cotati