59/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 1,938 Google reviews, the most in Union City.
- 4.8★ from 1,938 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 718 Douglas Ave, Oakland, CA 94603
Best Foundation Repair Companies in Union City, CA (2026)
124 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Union City: Attic Pros, CR Score 59/100; 4.8★ from 1,938 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Roof Doctors Alameda County, posts 24/7 hours; ranked #2 of 124.
- 22
Most-reviewed: Peace of Mind Structural, 225 Google reviews at 4.9★, the most of 124 ranked after Attic Pros; ranked #22.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
124 Union City foundation repair companies are ranked here by CR Score, from ten published factors. 11 are open 24/7, 61 open Saturdays and 38 open Sundays, based on posted hours. The median Google rating is 4.8★ across 124 rated businesses.
Top 10 foundation repair companies in Union City at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Attic Pros | 59 | 4.8★ (1,938) | Oakland, 13 mi away | 24/7 | Overall |
| 2 | Roof Doctors Alameda County | 56 | 5.0★ (87) | Alameda, 6 mi away | 24/7 | Emergencies |
| 3 | Roof Doctors Contra Costa County | 54 | 4.8★ (188) | Alamo, 21 mi away | 24/7 | — |
| 4 | Palo Alto Foundation & Concrete Contractors | 54 | 4.8★ (51) | Palo Alto, 14 mi away | Sat · Sun · Evenings | — |
| 5 | Golden Bay Foundation Builders | 54 | 4.9★ (62) | Alamo, 8 mi away | Sat | — |
| 6 | ELM Roofing Contractors | 54 | 4.9★ (153) | San Mateo, 15 mi away | Sat · Sun | — |
| 7 | EM Energy & Air | 53 | 4.9★ (101) | Campbell, 15 mi away | Sat · Sun · Evenings | — |
| 8 | Groundworks | 53 | 4.6★ (162) | Sunnyvale, 13 mi away | Sat · Sun · Evenings | — |
| 9 | Waterproofing Associates | 52 | 4.6★ (22) | Santa Clara, 15 mi away | Sat · Sun | — |
| 10 | Eastman Roofing & Waterproofing, Inc. | 52 | 4.9★ (172) | San Jose, 20 mi away | — | — |
The 124 best foundation repair companies in Union City, 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 Alameda, 6 mi away
56/100CR ScoreRanked #2 because of its Google rating and review volume: 5.0★ from 87 Google reviews.
- 5.0★ from 87 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Alamo, 21 mi away
54/100CR ScoreRanked #3 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 Palo Alto, 14 mi away
54/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.8★ from 51 Google reviews, listed on Google as “Concrete contractor”.
- 4.8★ from 51 Google reviews
- Hours
- Mon–Fri 7 AM–8 PM · Sat 6:30 AM–7 PM · Sun 7 AM–8 PM
- Address
- 260 Sheridan Ave, Palo Alto, CA 94306
Based in Alamo, 8 mi away
54/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 62 Google reviews, listed on Google as “Concrete contractor”.
- 4.9★ from 62 Google reviews
- Hours
- Mon–Sat 8 AM–6 PM · Sun closed
Based in San Mateo, 15 mi away
54/100CR ScoreRanked #6 because of its Google rating and review volume: 4.9★ from 153 Google reviews.
- 4.9★ from 153 Google reviews
- Hours
- Mon–Sun 9 AM–6 PM
- Address
- 1900 S Norfolk St #394, San Mateo, CA 94403
Based in Campbell, 15 mi away
53/100CR ScoreRanked #7 because of its Google rating and review volume: 4.9★ from 101 Google reviews.
- 4.9★ from 101 Google reviews
- Hours
- Mon–Sun 8 AM–7 PM
#8 Groundworks
Based in Sunnyvale, 13 mi away
53/100CR ScoreRanked #8 because of its Google rating and review volume: 4.6★ from 162 Google reviews.
- 4.6★ from 162 Google reviews
- Hours
- Mon–Fri 4 AM–8 PM · Sat 5 AM–8 PM · Sun 7 AM–8 PM
- Address
- 1161 N Fair Oaks Ave, Sunnyvale, CA 94089
Based in Santa Clara, 15 mi away
52/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.6★ from 22 Google reviews, listed on Google as “Roofing contractor”.
- 4.6★ from 22 Google reviews
- Hours
- Mon–Sun 9 AM–6 PM
- Address
- 1295 Norman Ave, Santa Clara, CA 95054
Based in San Jose, 20 mi away
52/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 172 Google reviews, listed on Google as “Roofing contractor”.
- 4.9★ from 172 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 1418 Douglas St, San Jose, CA 95126
Based in Hayward, 7 mi away
52/100CR ScoreRanked #11 because of its Google rating and review volume: 4.8★ from 83 Google reviews.
- 4.8★ from 83 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat 8 AM–1 PM · Sun closed
- Address
- 23135 Saklan Rd, Hayward, CA 94545
Based in Fremont, 7 mi away
52/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.0★ from 8 Google reviews, listed on Google as “Waterproofing service”.
- 4.0★ from 8 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat–Sun closed
Based in Milpitas, 15 mi away
52/100CR ScoreRanked #13 because of its Google rating and review volume: 5.0★ from 45 Google reviews.
- 5.0★ from 45 Google reviews
- Hours
- Mon–Sat 8 AM–7 PM · Sun 8 AM–5 PM
- Address
- 1605 S Main St #108, Milpitas, CA 95035
Based in San Francisco, 23 mi away
52/100CR ScoreRanked #14 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
Based in San Jose, 17 mi away
52/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.7★ from 18 Google reviews, listed on Google as “Roofing contractor”.
- 4.7★ from 18 Google reviews
- Hours
- Mon–Sun 8 AM–5 PM
- Address
- 1430 Koll Cir #107, San Jose, CA 95112
Based in San Leandro, 13 mi away
51/100CR ScoreRanked #16 because of its Google rating and availability: 4.8★ from 17 Google reviews, open 24/7.
- 4.8★ from 17 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 466 Whitney St, San Leandro, CA 94577
Based in Oakland, 14 mi away
51/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.7★ from 10 Google reviews, listed on Google as “Waterproofing service”.
- 4.7★ from 10 Google reviews
- Hours
- Mon–Fri 6 AM–3 PM · Sat–Sun closed
- Address
- 465 Roland Way, Oakland, CA 94621
Based in San Mateo, 16 mi away
51/100CR ScoreRanked #18 because of its Google rating and review volume: 4.9★ from 47 Google reviews.
- 4.9★ from 47 Google reviews
- Hours
- Mon–Sun 7 AM–5 PM
- Address
- 1103 E 16th Ave, San Mateo, CA 94402
Based in Livermore, 14 mi away
51/100CR ScoreRanked #19 because of its Google rating and review volume: 4.4★ from 208 Google reviews.
- 4.4★ from 208 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 1813 Rutan Dr Unit A, Livermore, CA 94551
#20 Geico Builders
Based in Oakland, 20 mi away
51/100CR ScoreRanked #20 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 Pleasant Hill, 24 mi away
51/100CR ScoreRanked #21 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 San Mateo, 16 mi away
51/100CR ScoreRanked #22 because of its Google rating and review volume: 4.9★ from 225 Google reviews.
- 4.9★ from 225 Google reviews
- Hours
- Mon–Fri 7:30 AM–4 PM · Sat–Sun closed
- Address
- 180 South Blvd, San Mateo, CA 94402
Based in Dublin, 29 mi away
50/100CR ScoreRanked #23 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 Berkeley, 20 mi away
50/100CR 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 Walnut Creek, 22 mi away
50/100CR ScoreRanked #25 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
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 124 ranked foundation repair companies here; the rest are on their profiles.
Also serving Union City
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 |
|---|---|---|
| AAA Roofing and Waterproofing, LLC. | 5.0★ (2) | 8 mi |
| Cal Cade Construction | 5.0★ (2) | 25 mi |
| CedarSpringline Roofing | In Union City | |
| D L C CONCRETE | 5.0★ (2) | 7 mi |
| Detail Construction & Waterproofing, Inc | 5.0★ (2) | 24 mi |
| Elite Roofing & Waterproofing | 3.0★ (2) | 20 mi |
| Heldy Andrade Painting Inc. | 5.0★ (2) | 12 mi |
| JVT Handyman Services | 5.0★ (1) | In Union City |
| KH Waterproofing And Restoration | 5.0★ (2) | 22 mi |
| LCI Green Contractor Inc | 5.0★ (2) | 25 mi |
| Lone Mountain Homes Inc | 5.0★ (2) | 27 mi |
| Mictlan General Construction | In Union City | |
| Nor Cal Waterproofing | 5.0★ (2) | 29 mi |
| Panda Heating & Cooling | 3.5★ (2) | 13 mi |
| Soodo Construction | 5.0★ (2) | 21 mi |
| The Restoration & Waterproofing Co., Inc. | 5.0★ (2) | 27 mi |
| UFcastro painting and waterproofing | 5.0★ (2) | 25 mi |
| Union City Roof Masters | In Union City | |
| Windsor Waterproofing | 5.0★ (2) | 29 mi |
| Wise Roofing Solutions of Concord | 4.0★ (2) | 25 mi |
How much do foundation repair companies cost in Union City?
National price ranges in USD, not adjusted for Union City. 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 Union City foundation repair companies
We scored 124 Union City 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 Union City 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 Union City: frequently asked questions
Who is the best foundation repair company in Union City?
By CR Score, the highest-ranked foundation repair company in Union City, CA is Attic Pros with a CR Score of 59/100. It has 4.8★ from 1,938 Google reviews. It is open 24/7. Roof Doctors Alameda County (#2) and Roof Doctors Contra Costa County (#3) follow. We ranked 124 foundation repair companies on ten factors, last updated October 22, 2026.
How many foundation repair companies are there in Union City?
ContractorsRanked ranks 124 foundation repair companies serving Union City, CA. Another 20 within 40 mi are listed but not ranked yet. Counts are as of October 2026.
Which foundation repair companies in Union City are open 24/7?
11 ranked foundation repair companies in Union City post 24/7 hours. The highest-ranked are Attic Pros (#1), Roof Doctors Alameda County (#2) and Roof Doctors Contra Costa County (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which foundation repair companies in Union City work on weekends?
61 of 124 ranked foundation repair companies post Saturday hours and 38 post Sunday hours. The highest-ranked open Saturdays are Attic Pros (#1), Roof Doctors Alameda County (#2) and Roof Doctors Contra Costa County (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does foundation repair cost in Union City?
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 Union City. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Union City foundation repair companies have?
The median Google rating among 124 rated foundation repair companies in Union City is 4.8★, with a median of 14 reviews. Attic Pros has the most, 1,938 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 Union City count in this ranking?
Yes, if they are within 40 mi of the Union City 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 Union City
- October 2026: CR Scores recalculated for 124 foundation repair companies serving Union City.
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Other trades in Union City
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- Plumbers in Union City775 ranked
- Electricians in Union City588 ranked
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- Kitchen remodelers in Union City620 ranked
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- Flooring contractors in Union City356 ranked
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