62/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 998 Google reviews, the most in Alamo.
- 4.8★ from 998 Google reviews
- Hours
- Mon–Fri 6:30 AM–9 PM · Sat–Sun 9 AM–4 PM
- Address
- 20470 Corsair Blvd, Hayward, CA 94545
Best General Contractors in Alamo, CA (2026)
897 general contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Alamo: Closets by Design - Northern California, CR Score 62/100; 4.8★ from 998 Google reviews; open 7 days a week.
- 2
Best for emergencies (open 24/7): Anza Builders, posts 24/7 hours; ranked #2 of 897.
- 9
Most-reviewed: Closet World - Northern California, 775 Google reviews at 4.4★, the most of 897 ranked after Closets by Design - Northern California; ranked #9.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
897 Alamo general contractors are ranked here by CR Score, from ten published factors. 52 are open 24/7, 316 open Saturdays and 166 open Sundays, based on posted hours. The median Google rating is 5.0★ across 897 rated businesses.
Top 10 general contractors in Alamo at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Closets by Design - Northern California | 62 | 4.8★ (998) | Hayward, 14 mi away | Sat · Sun · Evenings | Overall |
| 2 | Anza Builders | 61 | 5.0★ (26) | Alamo | 24/7 | Emergencies |
| 3 | Ocean Remodel | 61 | 4.9★ (107) | Castro Valley, 11 mi away | 24/7 | — |
| 4 | United Constructors Inc. | 61 | 4.9★ (48) | Alamo | 24/7 | — |
| 5 | Renovation Sells East Bay | 60 | 5.0★ (27) | Concord, 3 mi away | 24/7 | — |
| 6 | 3G Builders and Renovation | 60 | 5.0★ (160) | Walnut Creek, 5 mi away | Sat | — |
| 7 | LRL Builders, Inc. | 60 | 5.0★ (24) | Walnut Creek, 3 mi away | 24/7 | — |
| 8 | Y Group Remodeling | 60 | 4.8★ (85) | San Ramon, 6 mi away | Sat · Sun · Evenings | — |
| 9 | Closet World - Northern California | 60 | 4.4★ (775) | Hayward, 14 mi away | Sat · Sun · Evenings | Most reviews |
| 10 | Northwest Builders & Renovation | 59 | 5.0★ (42) | Walnut Creek, 6 mi away | Sat · Sun · Evenings | — |
The 897 best general contractors in Alamo, 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 Alamo
61/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Construction company”.
- 5.0★ from 26 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Castro Valley, 11 mi away
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 107 Google reviews, listed on Google as “General contractor”.
- 4.9★ from 107 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2811 Castro Valley Blvd #111, Castro Valley, CA 94546
Based in Alamo
61/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 48 Google reviews, listed on Google as “General contractor”.
- 4.9★ from 48 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1251 Stone Valley Rd, Alamo, CA 94507
Based in Concord, 3 mi away
60/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 27 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Walnut Creek, 5 mi away
60/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 160 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 160 Google reviews
- Hours
- Mon–Thu 8:30 AM–4:30 PM · Fri 8:30 AM–2 PM · Sat 9 AM–1 PM · Sun closed
- Address
- 2678 N Main St #7, Walnut Creek, CA 94597
Based in Walnut Creek, 3 mi away
60/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 24 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1661 Botelho Dr # 293, Walnut Creek, CA 94596
Based in San Ramon, 6 mi away
60/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.8★ from 85 Google reviews, listed on Google as “Construction company”.
- 4.8★ from 85 Google reviews
- Hours
- Mon–Sun 7 AM–8 PM
- Address
- 2010 Crow Canyon Pl Suite 100, San Ramon, CA 94583
Based in Hayward, 14 mi away
60/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.4★ from 775 Google reviews, listed on Google as “General contractor”.
- 4.4★ from 775 Google reviews
- Hours
- Mon–Fri 6:30 AM–9 PM · Sat 8 AM–6 PM · Sun 9 AM–4 PM
- Address
- 20466 Corsair Blvd, Hayward, CA 94545
Based in Walnut Creek, 6 mi away
59/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 42 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 42 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 1255 Treat Blvd suite 300, Walnut Creek, CA 94597
Based in Bay Point, 4 mi away
59/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 33 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
Based in Danville, 9 mi away
59/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 23 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Oakland, 11 mi away
59/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.6★ from 52 Google reviews, listed on Google as “General contractor”.
- 4.6★ from 52 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 887 71st Ave, Oakland, CA 94621
Based in Lafayette, 7 mi away
59/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “Construction company”.
- 5.0★ from 35 Google reviews
- Hours
- Mon–Sun 9 AM–6 PM
- Address
- 3870 Quail Ridge Rd, Lafayette, CA 94549
#15 AB Construction
Based in Walnut Creek, 3 mi away
58/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.7★ from 81 Google reviews, listed on Google as “Construction company”.
- 4.7★ from 81 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat 7 AM–3 PM · Sun closed
- Address
- 1661 Tice Valley Blvd # 200, Walnut Creek, CA 94595
Based in Walnut Creek, 6 mi away
58/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 55 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 55 Google reviews
- Hours
- Mon–Sat 8 AM–6 PM · Sun closed
- Address
- 2890 N Main St Suite 300, Walnut Creek, CA 94597
Based in Albany, 6 mi away
58/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 30 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun 9 AM–1 PM
Based in Lafayette, 5 mi away
58/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 59 Google reviews, listed on Google as “General contractor”.
- 4.9★ from 59 Google reviews
- Hours
- Mon–Fri 8:30 AM–6 PM · Sat 9 AM–4 PM · Sun closed
- Address
- 3364 Mount Diablo Blvd, Lafayette, CA 94549
Based in Alamo
58/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “Contractor”.
- 5.0★ from 25 Google reviews
- Hours
- Mon–Sat 7 AM–5 PM · Sun closed
- Address
- 31 Arjang Ct, Alamo, CA 94507
Based in Alameda, 14 mi away
58/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.7★ from 240 Google reviews, listed on Google as “Contractor”.
- 4.7★ from 240 Google reviews
- Hours
- Mon–Thu 8 AM–7 PM · Fri 8 AM–2:30 PM · Sat closed · Sun 8 AM–7 PM
- Address
- 2381 Mariner Square Dr #275, Alameda, CA 94501
Based in San Ramon, 8 mi away
58/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 67 Google reviews, listed on Google as “Construction company”.
- 4.9★ from 67 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat closed · Sun 7 AM–5 PM
- Address
- 2721 Morgan Dr, San Ramon, CA 94583
Based in Lathrop, 21 mi away
58/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 58 Google reviews, listed on Google as “Contractor”.
- 5.0★ from 58 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Danville, 2 mi away
58/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 13 Google reviews
- Hours
- Mon–Sun 7 AM–8 PM
- Address
- 15 Railroad Ave, Danville, CA 94526
Based in Pleasanton, 13 mi away
57/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 22 Google reviews, listed on Google as “General contractor”.
- 4.9★ from 22 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4900 Hopyard Rd Suit 100, Pleasanton, CA 94588
#25 Geico Builders
Based in Oakland, 13 mi away
57/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 87 Google reviews, listed on Google as “General contractor”.
- 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
General contractors 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 897 ranked general contractors here; the rest are on their profiles.
Also serving Alamo
20 more general contractors within 25 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 |
|---|---|---|
| Bedrock Foundation Builders | 5.0★ (10) | In Alamo |
| Complete Plumbing | 5.0★ (142) | In Alamo |
| Diablo Valley Handyman Services | 3.3★ (8) | In Alamo |
| Drainage Pros, INC | 4.8★ (83) | In Alamo |
| Duce Construction Deck and Fence | 4.9★ (140) | In Alamo |
| GOLD Remodeling | 5.0★ (27) | In Alamo |
| Golden Bay Foundation Builders | 4.9★ (62) | In Alamo |
| Golden State Concrete | 4.9★ (85) | In Alamo |
| JML Construction Services | 5.0★ (15) | In Alamo |
| Oakplant Landscaping Inc. | 5.0★ (10) | In Alamo |
| OSJ Electric | 5.0★ (71) | In Alamo |
| Pacific Bay Construction | 5.0★ (20) | In Alamo |
| PointVertex Construction | 5.0★ (60) | In Alamo |
| RAP Plumbing | 5.0★ (8) | In Alamo |
| Ryan is Handy | 5.0★ (10) | In Alamo |
| SPC Remodeling | 4.9★ (8) | In Alamo |
| Style Builders Construction | 5.0★ (15) | In Alamo |
| The Grout Specialist Co.™ | 4.7★ (12) | In Alamo |
| Tile Artist Construction | 5.0★ (24) | In Alamo |
| Zamora Home Improvement | 5.0★ (16) | In Alamo |
How much do general contractors cost in Alamo?
Typical prices in USD, adjusted for California with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Kitchen remodel | $15,240 | $28,190 | $43,470 | Per project: typical range of customer-reported remodels (about $75 to $250 per sq ft). US national range × 1.04 Pacific factor (2025 Cost vs. Value Report) | October 2026 |
| Bathroom remodel | $7,050 | $12,880 | $18,720 | Per bathroom: typical range of customer-reported remodels. US national range × 1.06 Pacific factor (2025 Cost vs. Value Report) | October 2026 |
How to check a general contractor's license in California
In California, Contractors State License Board (CSLB) licenses B General Building contractor license (B-2 for residential remodeling).
Jobs of $1,000 or more in labor and materials (from January 1, 2025).
- Search the business name or license number on the Contractors State License Board (CSLB) license lookup.
- Check that the status is active and the name matches the contract or truck.
- Ask for proof of insurance before work starts.
No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.
Guide checked October 2026. How we verify licenses
How we ranked Alamo general contractors
We scored 897 Alamo general contractors 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 Alamo 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 |
General contractors in Alamo: frequently asked questions
Who is the best general contractor in Alamo?
By CR Score, the highest-ranked general contractor in Alamo, CA is Closets by Design - Northern California with a CR Score of 62/100. It has 4.8★ from 998 Google reviews. It is open 7 days a week. Anza Builders (#2) and Ocean Remodel (#3) follow. We ranked 897 general contractors on ten factors, last updated October 22, 2026.
How many general contractors are there in Alamo?
ContractorsRanked ranks 897 general contractors serving Alamo, CA. 7 of them are based in Alamo; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which general contractors in Alamo are open 24/7?
52 ranked general contractors in Alamo post 24/7 hours. The highest-ranked are Anza Builders (#2), Ocean Remodel (#3) and United Constructors Inc. (#4). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which general contractors in Alamo work on weekends?
316 of 897 ranked general contractors post Saturday hours and 166 post Sunday hours. The highest-ranked open Saturdays are Closets by Design - Northern California (#1), Anza Builders (#2) and Ocean Remodel (#3). Posted hours are office hours; crews may book weekend jobs separately.
How do I check a general contractor's license in California?
In California, Contractors State License Board (CSLB) handles licensing and covers B General Building contractor license (B-2 for residential remodeling). Search the business or license number at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx. Jobs of $1,000 or more in labor and materials (from January 1, 2025).
How much does kitchen remodel cost in Alamo?
Kitchen remodel typically costs $15,240 to $43,470, with $28,190 typical (Per project: typical range of customer-reported remodels (about $75 to $250 per sq ft). US national range × 1.04 Pacific factor (2025 Cost vs. Value Report)). The range is adjusted for California. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Alamo general contractors have?
The median Google rating among 897 rated general contractors in Alamo is 5.0★, with a median of 7 reviews. Closets by Design - Northern California has the most, 998 reviews, and ranks #1. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank general contractors?
Each general contractor 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.
Update log for Alamo
- October 2026: CR Scores recalculated for 897 general contractors serving Alamo.
- October 2026: 9 duplicate listings merged.
More general contractors and Alamo pages
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Other trades in Alamo
- Roofers in Alamo772 ranked
- Plumbers in Alamo649 ranked
- Electricians in Alamo469 ranked
- HVAC contractors in Alamo544 ranked
- Painters in Alamo238 ranked
- Landscapers in Alamo184 ranked
- Handymen in Alamo112 ranked
- Kitchen remodelers in Alamo444 ranked
- Bathroom remodelers in Alamo420 ranked
- Flooring contractors in Alamo298 ranked
- Tile installers in Alamo72 ranked
- Drywall contractors in Alamo36 ranked
- Concrete contractors in Alamo269 ranked
- Fence contractors in Alamo122 ranked
- Deck builders in Alamo139 ranked
- Siding contractors in Alamo104 ranked
- Window installers in Alamo326 ranked
- Gutter installers in Alamo164 ranked
- Insulation contractors in Alamo99 ranked
- Solar installers in Alamo305 ranked
- Garage door repair companies in Alamo208 ranked
- Foundation repair companies in Alamo131 ranked
- Tree services in Alamo230 ranked
- Masonry contractors in Alamo114 ranked
- Water damage restoration companies in Alamo400 ranked
- Home builders in Alamo507 ranked
- Demolition contractors in Alamo95 ranked
- All contractors in Alamo