56/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 575 Google reviews.
- 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
Best Foundation Repair Companies in Napa, CA (2026)
90 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Napa: Groundworks, CR Score 56/100; 4.8★ from 575 Google reviews; open 7 days a week.
- 2
Best for emergencies (open 24/7): Attic Pros, posts 24/7 hours; ranked #2 of 90.
- 2
Most-reviewed: Attic Pros, 1,938 Google reviews at 4.8★, the most of 90 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
90 Napa foundation repair companies are ranked here by CR Score, from ten published factors. 10 are open 24/7, 46 open Saturdays and 26 open Sundays, based on posted hours. The median Google rating is 4.8★ across 90 rated businesses.
Top 10 foundation repair companies in Napa at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Groundworks | 56 | 4.8★ (575) | Fairfield, 12 mi away | Sat · Sun · Evenings | Overall |
| 2 | Attic Pros | 55 | 4.8★ (1,938) | Oakland, 39 mi away | 24/7 | Emergencies, Most reviews |
| 3 | Roof Doctors Sonoma County | 53 | 4.9★ (208) | Windsor, 33 mi away | 24/7 | — |
| 4 | Roof Doctors Contra Costa County | 52 | 4.8★ (188) | Alamo, 32 mi away | 24/7 | — |
| 5 | Sustainable Living Builders, Inc | 52 | 4.9★ (84) | Sebastopol, 27 mi away | 24/7 | — |
| 6 | Modern Summit Roofing Contractor | 51 | 5.0★ (47) | Petaluma, 21 mi away | Sat · Sun · Evenings | — |
| 7 | Roof Doctors Marin County | 50 | 4.6★ (40) | Fairfax, 25 mi away | 24/7 | — |
| 8 | Gotham Home Services | 50 | 5.0★ (33) | Dublin, 30 mi away | 24/7 | — |
| 9 | Under The House. | 50 | 5.0★ (62) | Santa Rosa, 28 mi away | Sat · Sun · Evenings | — |
| 10 | S.L Foundation Repair & Concrete Contractor | 50 | 4.7★ (48) | Pleasant Hill, 28 mi away | Sun · Evenings | — |
The 90 best foundation repair companies in Napa, 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.
#2 Attic Pros
Based in Oakland, 39 mi away
55/100CR ScoreRanked #2 because of its Google rating and review volume: 4.8★ from 1,938 Google reviews, the most in Napa.
- 4.8★ from 1,938 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 718 Douglas Ave, Oakland, CA 94603
Based in Windsor, 33 mi away
53/100CR ScoreRanked #3 because of its Google rating and review volume: 4.9★ from 208 Google reviews.
- 4.9★ from 208 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 822 Joshua Dr, Windsor, CA 95492
Based in Alamo, 32 mi away
52/100CR ScoreRanked #4 because of its Google rating and review volume: 4.8★ from 188 Google reviews.
- 4.8★ from 188 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Sebastopol, 27 mi away
52/100CR ScoreRanked #5 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 Petaluma, 21 mi away
51/100CR ScoreRanked #6 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 Fairfax, 25 mi away
50/100CR ScoreRanked #7 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, 30 mi away
50/100CR ScoreRanked #8 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, 28 mi away
50/100CR ScoreRanked #9 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 Pleasant Hill, 28 mi away
50/100CR ScoreRanked #10 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, 3 mi away
50/100CR ScoreRanked #11 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 Richmond, 24 mi away
49/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Roofing contractor”.
- 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 Novato, 21 mi away
49/100CR ScoreRanked #13 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 Walnut Creek, 30 mi away
49/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Roofing contractor”.
- 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 San Francisco, 40 mi away
49/100CR ScoreRanked #15 because of its Google rating and review volume: 4.9★ from 98 Google reviews.
- 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
#16 Division Seven
Based in Petaluma, 20 mi away
49/100CR ScoreRanked #16 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
#17 Geico Builders
Based in Oakland, 34 mi away
48/100CR ScoreRanked #17 because of its Google rating and review volume: 5.0★ from 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 Santa Rosa, 23 mi away
48/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.5★ from 27 Google reviews, listed on Google as “Roofing contractor”.
- 4.5★ from 27 Google reviews
- Hours
- Mon–Sun 9 AM–7 PM
- Address
- 111 Knolls Ln, Santa Rosa, CA 95404
Based in Benicia, 18 mi away
48/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Roofing contractor”.
- 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 Vacaville, 19 mi away
48/100CR ScoreRanked #20 because of its Google rating and review volume: 4.7★ from 107 Google reviews.
- 4.7★ from 107 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat–Sun closed
- Address
- 859 Cotting Ct Suite A, Vacaville, CA 95688
Based in Santa Rosa, 24 mi away
48/100CR ScoreRanked #21 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
#22 Aleman Concrete
Based in Santa Rosa, 24 mi away
48/100CR ScoreRanked #22 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–Sat 6 AM–6:30 PM · Sun closed
- Address
- 5023 Algiers Ave, Santa Rosa, CA 95409
Based in San Francisco, 37 mi away
48/100CR ScoreRanked #23 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 Berkeley, 37 mi away
48/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.6★ from 10 Google reviews, listed on Google as “Roofing contractor”.
- 4.6★ from 10 Google reviews
- Hours
- Mon–Sun 7 AM–6 PM
Based in Cotati, 21 mi away
48/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Construction company”.
- 5.0★ from 19 Google reviews
- Hours
- Mon–Fri 8 AM–7 PM · Sat 8 AM–5 PM · Sun closed
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 90 ranked foundation repair companies here; the rest are on their profiles.
Also serving Napa
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.S.A. Drilling and Foundation | In Napa | |
| BASIL CONSTRUCTION INC | 5.0★ (1) | In Napa |
| BHM Construction Inc | 3.0★ (10) | In Napa |
| Clerici Landscape Management | 5.0★ (4) | In Napa |
| Conti Construction | 5.0★ (1) | In Napa |
| CR Buildworks | 4.7★ (3) | In Napa |
| Fast Framing Construction | In Napa | |
| Hayden Morris Development | In Napa | |
| Innovation Builder and Construction | 5.0★ (30) | In Napa |
| Kapono Meyer concrete inc | 4.6★ (12) | In Napa |
| LC Professional Builders, Inc. | In Napa | |
| Matt Stubbs construction | In Napa | |
| Nova Group, Inc | 4.8★ (5) | In Napa |
| Phillips Construction | 5.0★ (6) | In Napa |
| R Heritage Design Build, Inc | In Napa | |
| Rick Robben Construction | 4.8★ (18) | In Napa |
| Roberson & Son Construction Inc. | 4.5★ (8) | In Napa |
| Rp BUILDER | In Napa | |
| Shane Co Buildworks | In Napa | |
| ZV Construction | 5.0★ (2) | In Napa |
How much do foundation repair companies cost in Napa?
National price ranges in USD, not adjusted for Napa. 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 Napa foundation repair companies
We scored 90 Napa 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 Napa 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 Napa: frequently asked questions
Who is the best foundation repair company in Napa?
By CR Score, the highest-ranked foundation repair company in Napa, CA is Groundworks with a CR Score of 56/100. It has 4.8★ from 575 Google reviews. It is open 7 days a week. Attic Pros (#2) and Roof Doctors Sonoma County (#3) follow. We ranked 90 foundation repair companies on ten factors, last updated October 22, 2026.
How many foundation repair companies are there in Napa?
ContractorsRanked ranks 90 foundation repair companies serving Napa, CA. Another 20 within 40 mi are listed but not ranked yet. Counts are as of October 2026.
Which foundation repair companies in Napa are open 24/7?
10 ranked foundation repair companies in Napa post 24/7 hours. The highest-ranked are Attic Pros (#2), Roof Doctors Sonoma County (#3) 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 Napa work on weekends?
46 of 90 ranked foundation repair companies post Saturday hours and 26 post Sunday hours. The highest-ranked open Saturdays are Groundworks (#1), Attic Pros (#2) and Roof Doctors Sonoma County (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does foundation repair cost in Napa?
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 Napa. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Napa foundation repair companies have?
The median Google rating among 90 rated foundation repair companies in Napa is 4.8★, with a median of 13 reviews. Attic Pros has the most, 1,938 reviews, and ranks #2. 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 Napa count in this ranking?
Yes, if they are within 40 mi of the Napa 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 Napa
- October 2026: CR Scores recalculated for 90 foundation repair companies serving Napa.
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