91/100CR Score
Ranked #1 because of its Google rating and availability: 5.0★ from 233 Google reviews, open 24/7.
- 5.0★ from 233 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 133 S Linden Ave, South San Francisco, CA 94080
Best General Contractors in Alameda, CA (2026)
1,112 general contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Alameda: R & S Erection North Peninsula, CR Score 91/100; 5.0★ from 233 Google reviews; open 24/7.
- 3
Best for emergencies (open 24/7): Ocean Remodel, posts 24/7 hours; ranked #3 of 1,112.
- 2
Most-reviewed: Closets by Design - Northern California, 998 Google reviews at 4.8★, the most of 1,112 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,112 Alameda general contractors are ranked here by CR Score, from 8 published factors. 62 are open 24/7, 426 open Saturdays and 209 open Sundays, based on posted hours. The median Google rating is 5.0★ across 1,112 rated businesses.
Top 10 general contractors in Alameda at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | R & S Erection North Peninsula | 91 | 5.0★ (233) | South San Francisco, 12 mi away | 24/7 | Overall |
| 2 | Closets by Design - Northern California | 89 | 4.8★ (998) | Hayward, 11 mi away | Sat · Sun · Evenings | Most reviews |
| 3 | Ocean Remodel | 89 | 4.9★ (107) | Castro Valley, 11 mi away | 24/7 | Emergencies |
| 4 | 361 Construction | 89 | 4.9★ (29) | Alameda | 24/7 | — |
| 5 | Method Remodeling General Contractor | 88 | 5.0★ (69) | Burlingame, 13 mi away | 24/7 | — |
| 6 | CSA Home and Business Services | 88 | 5.0★ (58) | Lathrop, 11 mi away | 24/7 | — |
| 7 | Ehret Co Plumbing & Heating | 88 | 4.6★ (52) | Oakland, 4 mi away | 24/7 | — |
| 8 | Sassoon Construction | 87 | 5.0★ (23) | San Francisco, 6 mi away | 24/7 | — |
| 9 | A and D Construction | 85 | 5.0★ (24) | Campbell, 11 mi away | 24/7 | — |
| 10 | Lockworks Unlimited | 85 | 4.7★ (144) | Redwood City, 21 mi away | 24/7 | — |
The 1,112 best general contractors in Alameda, 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 Hayward, 11 mi away
89/100CR ScoreRanked #2 because of its Google rating and review volume: 4.8★ from 998 Google reviews, the most Google reviews on this list (998).
- 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
Based in Castro Valley, 11 mi away
89/100CR ScoreRanked #3 because of its Google rating and availability: 4.9★ from 107 Google reviews, open 24/7.
- 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 Alameda
89/100CR ScoreRanked #4 because of its Google rating and availability: 4.9★ from 29 Google reviews, open 24/7.
- 4.9★ from 29 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Burlingame, 13 mi away
88/100CR ScoreRanked #5 because of its Google rating and availability: 5.0★ from 69 Google reviews, open 24/7.
- 5.0★ from 69 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 533 Airport Blvd. #400, Burlingame, CA 94010
Based in Lathrop, 11 mi away
88/100CR ScoreRanked #6 because of its Google rating and availability: 5.0★ from 58 Google reviews, open 24/7.
- 5.0★ from 58 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Oakland, 4 mi away
88/100CR ScoreRanked #7 because of its Google rating and availability: 4.6★ from 52 Google reviews, open 24/7.
- 4.6★ from 52 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 887 71st Ave, Oakland, CA 94621
Based in San Francisco, 6 mi away
87/100CR ScoreRanked #8 because of its Google rating and availability: 5.0★ from 23 Google reviews, open 24/7.
- 5.0★ from 23 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Campbell, 11 mi away
85/100CR ScoreRanked #9 because of its Google rating and availability: 5.0★ from 24 Google reviews, open 24/7.
- 5.0★ from 24 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Redwood City, 21 mi away
85/100CR ScoreRanked #10 because of its Google rating and availability: 4.7★ from 144 Google reviews, open 24/7.
- 4.7★ from 144 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2671 El Camino Real, Redwood City, CA 94061
Based in Hayward, 11 mi away
85/100CR ScoreRanked #11 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 Alameda
85/100CR ScoreRanked #12 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 Walnut Creek, 14 mi away
85/100CR ScoreRanked #13 because of its Google rating and availability: 5.0★ from 24 Google reviews, open 24/7.
- 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 Concord, 15 mi away
85/100CR ScoreRanked #14 because of its Google rating and availability: 5.0★ from 27 Google reviews, open 24/7.
- 5.0★ from 27 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
#15 Geico Builders
Based in Oakland, 3 mi away
84/100CR ScoreRanked #15 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
Based in San Francisco, 7 mi away
84/100CR ScoreRanked #16 because of its Google rating and availability: 4.9★ from 9 Google reviews, open 24/7.
- 4.9★ from 9 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 300 Newhall St, San Francisco, CA 94124
#17 Sima
Based in San Leandro, 5 mi away
84/100CR ScoreRanked #17 because of its Google rating and availability: 4.3★ from 11 Google reviews, open 24/7.
- 4.3★ from 11 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 130 Doolittle Dr #15, San Leandro, CA 94577
#18 SBC CONSTRUCTION
Based in San Francisco, 9 mi away
84/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 43 Google reviews, listed on Google as “Construction company”.
- 5.0★ from 43 Google reviews
- Hours
- Mon–Sun 8:30 AM–6 PM
- Address
- 64 Winfield St, San Francisco, CA 94110
Based in San Francisco, 9 mi away
84/100CR ScoreRanked #19 because of its Google rating and availability: 5.0★ from 9 Google reviews, open 24/7.
- 5.0★ from 9 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2250 Mission St #302, San Francisco, CA 94110
Based in San Francisco, 9 mi away
84/100CR ScoreRanked #20 because of its Google rating and availability: 4.8★ from 18 Google reviews, open 24/7.
- 4.8★ from 18 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1535 Mission St, San Francisco, CA 94103
Based in Alameda
84/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Tennis court construction company”.
- 5.0★ from 12 Google reviews
- Hours
- Mon–Fri 8 AM–7 PM · Sat–Sun 8 AM–5 PM
- Address
- 13 Anderson Rd, Alameda, CA 94502
Based in Oakland, 3 mi away
83/100CR ScoreRanked #22 because of its Google rating and availability: 5.0★ from 3 Google reviews, open 24/7.
- 5.0★ from 3 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1242 Seminary Ave, Oakland, CA 94621
Based in Danville, 11 mi away
83/100CR ScoreRanked #23 because of its Google rating and availability: 4.8★ from 11 Google reviews, open 24/7.
- 4.8★ from 11 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in San Francisco, 8 mi away
83/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 25 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 95 3rd St 2nd Floor #143, San Francisco, CA 94103
Based in Danville, 20 mi away
83/100CR ScoreRanked #25 because of its Google rating and availability: 5.0★ from 23 Google reviews, open 24/7.
- 5.0★ from 23 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
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 1,112 ranked general contractors here; the rest are on their profiles.
Also serving Alameda
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 |
|---|---|---|
| American Grade Construction | 4.7★ (14) | In Alameda |
| Art. Garden. Design. | 5.0★ (33) | In Alameda |
| Bay Area Sewer Inspections | 5.0★ (20) | In Alameda |
| Bay Area Sustainable Landscaping | 4.6★ (13) | In Alameda |
| Bayside Builders Group | 4.9★ (105) | In Alameda |
| Drywall & Painting SF | 4.8★ (49) | In Alameda |
| GoldCoast D&D | 4.9★ (12) | In Alameda |
| JE Handyman Home Service | 5.0★ (17) | In Alameda |
| Kirk Giordano Plastering Inc. | 4.9★ (43) | In Alameda |
| Martin's Bay Area Construction | 4.8★ (23) | In Alameda |
| MUSK Construction Bathroom Remodeling San Jose | 5.0★ (14) | In Alameda |
| Remodeling Heroes | 4.7★ (50) | In Alameda |
| Roto-Rooter Plumbing & Water Cleanup | 5.0★ (191) | In Alameda |
| Saarman Construction, Ltd. | 4.3★ (20) | In Alameda |
| SI Construction & Remodeling | 5.0★ (26) | In Alameda |
| Sunset Home Builders San Francisco | 4.9★ (33) | In Alameda |
| Teo's Handyman Services | 4.8★ (19) | In Alameda |
| The Grout Doctor - Oakland | 5.0★ (21) | In Alameda |
| Underground Rooter Sewer and Drains | 5.0★ (12) | In Alameda |
| Washington Rooter & Plumbing | 5.0★ (22) | In Alameda |
How much do general contractors cost in Alameda?
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 Alameda general contractors
We scored 1,112 Alameda general contractors 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 Alameda 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 |
General contractors in Alameda: frequently asked questions
Who is the best general contractor in Alameda?
By CR Score, the highest-ranked general contractor in Alameda, CA is R & S Erection North Peninsula with a CR Score of 91/100. It has 5.0★ from 233 Google reviews. It is open 24/7. Closets by Design - Northern California (#2) and Ocean Remodel (#3) follow. We ranked 1,112 general contractors on 8 factors, last updated October 22, 2026.
How many general contractors are there in Alameda?
ContractorsRanked ranks 1,112 general contractors serving Alameda, CA. 3 of them are based in Alameda; 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 Alameda are open 24/7?
62 ranked general contractors in Alameda post 24/7 hours. The highest-ranked are R & S Erection North Peninsula (#1), Ocean Remodel (#3) and 361 Construction (#4). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which general contractors in Alameda work on weekends?
426 of 1,112 ranked general contractors post Saturday hours and 209 post Sunday hours. The highest-ranked open Saturdays are R & S Erection North Peninsula (#1), Closets by Design - Northern California (#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 Alameda?
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 Alameda general contractors have?
The median Google rating among 1,112 rated general contractors in Alameda is 5.0★, with a median of 7 reviews. Closets by Design - Northern California has the most, 998 reviews, and ranks #2. 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 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.
Update log for Alameda
- October 2026: CR Scores recalculated for 1,112 general contractors serving Alameda.
- October 2026: 15 duplicate listings merged.
More general contractors and Alameda pages
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Other trades in Alameda
- Roofers in Alameda757 ranked
- Plumbers in Alameda759 ranked
- Electricians in Alameda550 ranked
- HVAC contractors in Alameda583 ranked
- Painters in Alameda310 ranked
- Landscapers in Alameda186 ranked
- Handymen in Alameda155 ranked
- Kitchen remodelers in Alameda537 ranked
- Bathroom remodelers in Alameda505 ranked
- Flooring contractors in Alameda344 ranked
- Tile installers in Alameda73 ranked
- Drywall contractors in Alameda45 ranked
- Concrete contractors in Alameda284 ranked
- Fence contractors in Alameda125 ranked
- Deck builders in Alameda170 ranked
- Siding contractors in Alameda102 ranked
- Window installers in Alameda315 ranked
- Gutter installers in Alameda189 ranked
- Insulation contractors in Alameda111 ranked
- Solar installers in Alameda301 ranked
- Garage door repair companies in Alameda262 ranked
- Foundation repair companies in Alameda129 ranked
- Tree services in Alameda273 ranked
- Masonry contractors in Alameda136 ranked
- Water damage restoration companies in Alameda391 ranked
- Home builders in Alameda480 ranked
- Demolition contractors in Alameda118 ranked
- All contractors in Alameda