60/100CR Score
Ranked #1 because of its Google rating and review volume: 4.9★ from 208 Google reviews, the most in Sebastopol.
- 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 Sebastopol, CA (2026)
27 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Sebastopol: Roof Doctors Sonoma County, CR Score 60/100; 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 27.
- 5
Most-reviewed: Crandall Roofing, Inc., 117 Google reviews at 4.9★, the most of 27 ranked after Roof Doctors Sonoma County; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
27 Sebastopol foundation repair companies are ranked here by CR Score, from ten published factors. 3 are open 24/7, 12 open Saturdays and 6 open Sundays, based on posted hours. The median Google rating is 4.9★ across 27 rated businesses.
Top 10 foundation repair companies in Sebastopol at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Roof Doctors Sonoma County | 60 | 4.9★ (208) | Windsor, 10 mi away | 24/7 | Overall |
| 2 | Sustainable Living Builders, Inc | 60 | 4.9★ (84) | Sebastopol | 24/7 | Emergencies |
| 3 | Under The House. | 57 | 5.0★ (62) | Santa Rosa, 5 mi away | Sat · Sun · Evenings | — |
| 4 | Modern Summit Roofing Contractor | 56 | 5.0★ (47) | Petaluma, 10 mi away | Sat · Sun · Evenings | — |
| 5 | Crandall Roofing, Inc. | 54 | 4.9★ (117) | Santa Rosa, 6 mi away | — | Most reviews |
| 6 | Rich’s Mobile Home Service | 53 | 4.5★ (27) | Santa Rosa, 8 mi away | Sat · Sun · Evenings | — |
| 7 | Clean CrawlSpace Inc. | 53 | 5.0★ (57) | Santa Rosa, 6 mi away | — | — |
| 8 | Xalos Foundation Support | 53 | 5.0★ (27) | Windsor, 10 mi away | — | — |
| 9 | Aleman Concrete | 53 | 5.0★ (27) | Santa Rosa, 10 mi away | Sat · Evenings | — |
| 10 | Roof Doctors Marin County | 52 | 4.6★ (40) | Fairfax, 32 mi away | 24/7 | — |
The 27 best foundation repair companies in Sebastopol, 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 Sebastopol
60/100CR ScoreRanked #2 because of its Google rating and review volume: 4.9★ from 84 Google reviews.
- 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, 5 mi away
57/100CR ScoreRanked #3 because of its Google rating and review volume: 5.0★ from 62 Google reviews.
- 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, 10 mi away
56/100CR ScoreRanked #4 because of its Google rating and review volume: 5.0★ from 47 Google reviews.
- 5.0★ from 47 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
Based in Santa Rosa, 6 mi away
54/100CR ScoreRanked #5 because of its Google rating and review volume: 4.9★ from 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, 8 mi away
53/100CR ScoreRanked #6 because of its Google rating and review volume: 4.5★ from 27 Google reviews.
- 4.5★ from 27 Google reviews
- Hours
- Mon–Sun 9 AM–7 PM
- Address
- 111 Knolls Ln, Santa Rosa, CA 95404
Based in Santa Rosa, 6 mi away
53/100CR ScoreRanked #7 because of its Google rating and review volume: 5.0★ from 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 Windsor, 10 mi away
53/100CR ScoreRanked #8 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 Santa Rosa, 10 mi away
53/100CR ScoreRanked #9 because of its Google rating and review volume: 5.0★ from 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 Fairfax, 32 mi away
52/100CR ScoreRanked #10 because of its Google rating and review volume: 4.6★ from 40 Google reviews.
- 4.6★ from 40 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Cotati, 10 mi away
52/100CR ScoreRanked #11 because of its Google rating and review volume: 5.0★ from 19 Google reviews.
- 5.0★ from 19 Google reviews
- Hours
- Mon–Fri 8 AM–7 PM · Sat 8 AM–5 PM · Sun closed
#12 Division Seven
Based in Petaluma, 15 mi away
51/100CR ScoreRanked #12 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 Santa Rosa, 4 mi away
51/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Concrete contractor”.
- 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 Novato, 28 mi away
50/100CR ScoreRanked #14 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 Petaluma, 10 mi away
49/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.6★ from 7 Google reviews, listed on Google as “Roofing contractor”.
- 4.6★ from 7 Google reviews
- Hours
- Mon–Sat 7 AM–6 PM · Sun closed
Based in Santa Rosa, 5 mi away
48/100CR ScoreRanked #16 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, 32 mi away
48/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.1★ from 31 Google reviews, listed on Google as “Concrete contractor”.
- 4.1★ from 31 Google reviews
- Hours
- Mon–Thu 8 AM–5 PM · Fri 8 AM–4:30 PM · Sat–Sun closed
Based in Santa Rosa, 6 mi away
48/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.1★ from 9 Google reviews, listed on Google as “Roofing contractor”.
- 4.1★ from 9 Google reviews
- Hours
- Mon–Fri 9 AM–5 PM · Sat–Sun closed
- Address
- 2989 Wiljan Ct Suite B, Santa Rosa, CA 95407
Based in San Rafael, 36 mi away
47/100CR ScoreRanked #19 because of its Google rating and review volume: 4.9★ from 41 Google reviews.
- 4.9★ from 41 Google reviews
- Hours
- Mon–Fri 7:30 AM–4 PM · Sat–Sun closed
- Address
- 1201 Andersen Dr STE O, San Rafael, CA 94901
Based in San Rafael, 31 mi away
47/100CR ScoreRanked #20 because of its Google rating and review volume: 4.8★ from 30 Google reviews.
- 4.8★ from 30 Google reviews
- Hours
- Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
- Address
- 69 Paul Dr., San Rafael, CA 94903
Based in San Rafael, 34 mi away
47/100CR ScoreRanked #21 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 San Rafael, 34 mi away
46/100CR ScoreRanked #22 because of its Google rating and review volume: 4.7★ from 30 Google reviews.
- 4.7★ from 30 Google reviews
- Hours
- Mon–Fri 9 AM–5 PM · Sat–Sun closed
- Address
- 1312 Mission Ave, San Rafael, CA 94901
#23 Mason Plumbing
Based in Corte Madera, 24 mi away
46/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 10 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 10 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat–Sun closed
Based in San Rafael, 31 mi away
46/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.0★ from 8 Google reviews, listed on Google as “General contractor”.
- 4.0★ from 8 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 630 Las Gallinas Ave 2nd Floor, San Rafael, CA 94903
#25 The Roofer
Based in Rohnert Park, 22 mi away
45/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.2★ from 5 Google reviews, listed on Google as “Roofing contractor”.
- 4.2★ from 5 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat–Sun closed
All 27 foundation repair companies
#1 to #25 are shown in full above. Here are #26 to #27, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Tarantino's Yardscapes | 44 | 3.6★ (5) | 21 mi |
| 27 | Perma Level | 43 | 5.0★ (5) | 36 mi |
Also serving Sebastopol
19 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.S.A. Drilling and Foundation | 32 mi | |
| Acecal Waterproofing & Decking | 1.0★ (1) | 29 mi |
| Adams Roofing | 10 mi | |
| Allen Winters Concrete, LLC | 5.0★ (2) | In Sebastopol |
| Bolt Down the Bay Area | 5.0★ (166) | In Sebastopol |
| Certified Specialists, Inc. | 5.0★ (2) | 6 mi |
| Dan Fix Landscape Construction Co. | 31 mi | |
| DWC Waterproofing | 5.0★ (1) | 31 mi |
| Everest Roofing | 30 mi | |
| Foundation Repair of CA | 5.0★ (1) | 12 mi |
| Gary Howard Construction Co | 5.0★ (5) | In Sebastopol |
| GD & Son Builders | 38 mi | |
| L.J. Construction | In Sebastopol | |
| Larios and Sons Concrete | 5.0★ (1) | 40 mi |
| Nor-Cal Painting | 34 mi | |
| North Coast Waterproofing Inc | 20 mi | |
| Sightline Builders, Inc | 4.8★ (17) | In Sebastopol |
| Thoroughbred WaterProofing | 5.0★ (1) | 7 mi |
| Zarate concrete | 36 mi |
How much do foundation repair companies cost in Sebastopol?
National price ranges in USD, not adjusted for Sebastopol. 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 Sebastopol foundation repair companies
We scored 27 Sebastopol 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 Sebastopol 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 Sebastopol: frequently asked questions
Who is the best foundation repair company in Sebastopol?
By CR Score, the highest-ranked foundation repair company in Sebastopol, CA is Roof Doctors Sonoma County with a CR Score of 60/100. 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 27 foundation repair companies on ten factors, last updated October 22, 2026.
How many foundation repair companies are there in Sebastopol?
ContractorsRanked ranks 27 foundation repair companies serving Sebastopol, CA. 1 of them is based in Sebastopol; the rest serve it from nearby towns. Another 19 within 40 mi are listed but not ranked yet. Counts are as of October 2026.
Which foundation repair companies in Sebastopol are open 24/7?
3 ranked foundation repair companies in Sebastopol post 24/7 hours. The highest-ranked are Roof Doctors Sonoma County (#1), Sustainable Living Builders, Inc (#2) and Roof Doctors Marin County (#10). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which foundation repair companies in Sebastopol work on weekends?
12 of 27 ranked foundation repair companies post Saturday hours and 6 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 Sebastopol?
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 Sebastopol. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Sebastopol foundation repair companies have?
The median Google rating among 27 rated foundation repair companies in Sebastopol is 4.9★, with a median of 27 reviews. Roof Doctors Sonoma County has the most, 208 reviews, and ranks #1. 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 Sebastopol count in this ranking?
Yes, if they are within 40 mi of the Sebastopol 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 Sebastopol
- October 2026: CR Scores recalculated for 27 foundation repair companies serving Sebastopol.
More foundation repair companies and Sebastopol pages
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Other trades in Sebastopol
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