63/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 151 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 151 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 707 Continental Cir, Mountain View, CA 94040
Best General Contractors in Los Altos, CA (2026)
757 general contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Los Altos: Royal Building Services, CR Score 63/100; 5.0★ from 151 Google reviews; open 7 days a week.
- 2
Best for emergencies (open 24/7): Primework Construction, posts 24/7 hours; ranked #2 of 757.
- 6
Most-reviewed: Closets by Design - Northern California, 998 Google reviews at 4.8★, the most of 757 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
757 Los Altos general contractors are ranked here by CR Score, from ten published factors. 47 are open 24/7, 290 open Saturdays and 159 open Sundays, based on posted hours. The median Google rating is 5.0★ across 757 rated businesses.
Top 10 general contractors in Los Altos at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Royal Building Services | 63 | 5.0★ (151) | Mountain View, 3 mi away | Sat · Sun · Evenings | Overall |
| 2 | Primework Construction | 62 | 5.0★ (111) | San Jose, 11 mi away | 24/7 | Emergencies |
| 3 | Lockworks Unlimited | 61 | 4.7★ (144) | Redwood City, 8 mi away | 24/7 | — |
| 4 | BH Construction & Development | 61 | 5.0★ (87) | Sunnyvale, 4 mi away | 24/7 | — |
| 5 | Inspired Builders Inc | 61 | 5.0★ (116) | Sunnyvale, 7 mi away | 24/7 | — |
| 6 | Closets by Design - Northern California | 61 | 4.8★ (998) | Hayward, 19 mi away | Sat · Sun · Evenings | Most reviews |
| 7 | The Container Store | 61 | 4.4★ (336) | Palo Alto, 5 mi away | Sat · Sun · Evenings | — |
| 8 | R&B Master Construction Inc. | 60 | 5.0★ (87) | Cupertino, 8 mi away | Sat · Sun · Evenings | — |
| 9 | R & S Erection North Peninsula | 60 | 5.0★ (233) | South San Francisco, 24 mi away | 24/7 | — |
| 10 | Prime Design & Build | 60 | 4.9★ (56) | San Jose, 11 mi away | 24/7 | — |
The 757 best general contractors in Los Altos, 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 San Jose, 11 mi away
62/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 111 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 111 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2375 Zanker Rd #245, San Jose, CA 95131
Based in Redwood City, 8 mi away
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.7★ from 144 Google reviews, listed on Google as “Contractor”.
- 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 Sunnyvale, 4 mi away
61/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 87 Google reviews, listed on Google as “Construction company”.
- 5.0★ from 87 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1392 Bremerton Dr, Sunnyvale, CA 94087
Based in Sunnyvale, 7 mi away
61/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 116 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 116 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 349 Cobalt Way #303, Sunnyvale, CA 94085
Based in Hayward, 19 mi away
61/100CR ScoreRanked #6 because of its Google rating and review volume: 4.8★ from 998 Google reviews, the most in Los Altos.
- 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 Palo Alto, 5 mi away
61/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.4★ from 336 Google reviews, listed on Google as “Contractor”.
- 4.4★ from 336 Google reviews
- Hours
- Mon–Sat 10 AM–7 PM · Sun 11 AM–6 PM
- Address
- 500 Stanford Shopping Center, Palo Alto, CA 94304
Based in Cupertino, 8 mi away
60/100CR ScoreRanked #8 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–Sun 7 AM–7 PM
Based in South San Francisco, 24 mi away
60/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 233 Google reviews, listed on Google as “Construction company”.
- 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
Based in San Jose, 11 mi away
60/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 56 Google reviews, listed on Google as “Construction company”.
- 4.9★ from 56 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1729 N First St, San Jose, CA 95112
Based in Hercules, 8 mi away
60/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 65 Google reviews, listed on Google as “Construction company”.
- 5.0★ from 65 Google reviews
- Hours
- Mon–Fri 7 AM–8:30 PM · Sat–Sun 9 AM–5 PM
#12 DevArt8 Builders
Based in Milpitas, 12 mi away
59/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 101 Google reviews, listed on Google as “Construction company”.
- 5.0★ from 101 Google reviews
- Hours
- Mon–Sun 8 AM–10 PM
- Address
- 1828 S Milpitas Blvd #506, Milpitas, CA 95035
Based in Campbell, 7 mi away
59/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 19 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Sunnyvale, 4 mi away
59/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 60 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 60 Google reviews
- Hours
- Mon–Thu 8 AM–8 PM · Fri 8 AM–5 PM · Sat closed · Sun 9 AM–5 PM
- Address
- 1016 Kenbridge Ct, Sunnyvale, CA 94087
Based in San Jose, 10 mi away
59/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 140 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 140 Google reviews
- Hours
- Mon–Fri 9 AM–6 PM · Sat closed · Sun 9 AM–4 PM
- Address
- 3031 Tisch Way, San Jose, CA 95128
Based in Burlingame, 19 mi away
59/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 69 Google reviews, listed on Google as “General contractor”.
- 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 San Jose, 11 mi away
59/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 37 Google reviews, listed on Google as “Contractor”.
- 4.8★ from 37 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2011 O'Toole Ave, San Jose, CA 95131
#18 OCA Builders
Based in Los Gatos, 16 mi away
59/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 49 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 49 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 19915 Wright Dr, Los Gatos, CA 95033
#19 Ocean Remodel
Based in Castro Valley, 22 mi away
58/100CR ScoreRanked #19 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 Hayward, 19 mi away
58/100CR ScoreRanked #20 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 Sunnyvale, 4 mi away
58/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 51 Google reviews, listed on Google as “Construction company”.
- 5.0★ from 51 Google reviews
- Hours
- Mon–Thu 8 AM–6 PM · Fri 8 AM–2 PM · Sat closed · Sun 8 AM–6 PM
- Address
- 899 Persimmon Ave, Sunnyvale, CA 94087
Based in Los Altos
58/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 73 Google reviews, listed on Google as “Construction company”.
- 5.0★ from 73 Google reviews
- Hours
- Mon 8 AM–5 PM · Tue 8 AM–6 PM · Wed 8 AM–5 PM · Thu 8 AM–6 PM · Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 153 2nd St UNIT 105, Los Altos, CA 94022
#23 GPI Builders
Based in Campbell, 11 mi away
58/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 27 Google reviews, listed on Google as “Contractor”.
- 4.9★ from 27 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 262 E Hamilton Ave, Campbell, CA 95008
Based in Sunnyvale, 7 mi away
58/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 14 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 710 Lakeway Dr STE 225, Sunnyvale, CA 94085
Based in Campbell, 12 mi away
58/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 49 Google reviews, listed on Google as “Construction company”.
- 5.0★ from 49 Google reviews
- Hours
- Mon–Sun 7 AM–10 PM
- Address
- 565 W Hacienda Ave, Campbell, CA 95008
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 757 ranked general contractors here; the rest are on their profiles.
Also serving Los Altos
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 |
|---|---|---|
| Beavers Inc | 5.0★ (2) | In Los Altos |
| Buildable LLC - Custom Home Builders | In Los Altos | |
| Edge Development Group | In Los Altos | |
| Epic Contracting | 5.0★ (1) | In Los Altos |
| Excel Construction & Development Inc | 5.0★ (1) | In Los Altos |
| Hammerschmidt Construction Design Build | 5.0★ (1) | In Los Altos |
| Home Preservation Services | 5.0★ (4) | In Los Altos |
| IKB Design & Construction | 5.0★ (15) | In Los Altos |
| James Kramer Construction Inc | 5.0★ (2) | In Los Altos |
| Land Consultants Construction & Design | In Los Altos | |
| Landscape Design & Construction | 5.0★ (1) | In Los Altos |
| Los Altos ADU Contractor | 5.0★ (1) | In Los Altos |
| MJK Homes, Inc. | 5.0★ (1) | In Los Altos |
| New Mellennium Electric | 5.0★ (2) | In Los Altos |
| Pulido's Painting LLC | 5.0★ (2) | In Los Altos |
| R J Dailey Construction Co | 5.0★ (1) | In Los Altos |
| Rebozzi Construction Inc | 1.0★ (1) | In Los Altos |
| Versatile | In Los Altos | |
| Via Builders | 5.0★ (1) | In Los Altos |
| zabel construction | 5.0★ (1) | In Los Altos |
How much do general contractors cost in Los Altos?
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 Los Altos general contractors
We scored 757 Los Altos 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 Los Altos 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 Los Altos: frequently asked questions
Who is the best general contractor in Los Altos?
By CR Score, the highest-ranked general contractor in Los Altos, CA is Royal Building Services with a CR Score of 63/100. It has 5.0★ from 151 Google reviews. It is open 7 days a week. Primework Construction (#2) and Lockworks Unlimited (#3) follow. We ranked 757 general contractors on ten factors, last updated October 22, 2026.
How many general contractors are there in Los Altos?
ContractorsRanked ranks 757 general contractors serving Los Altos, CA. 1 of them is based in Los Altos; 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 Los Altos are open 24/7?
47 ranked general contractors in Los Altos post 24/7 hours. The highest-ranked are Primework Construction (#2), Lockworks Unlimited (#3) and BH Construction & Development (#4). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which general contractors in Los Altos work on weekends?
290 of 757 ranked general contractors post Saturday hours and 159 post Sunday hours. The highest-ranked open Saturdays are Royal Building Services (#1), Primework Construction (#2) and Lockworks Unlimited (#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 Los Altos?
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 Los Altos general contractors have?
The median Google rating among 757 rated general contractors in Los Altos is 5.0★, with a median of 8 reviews. Closets by Design - Northern California has the most, 998 reviews, and ranks #6. 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 Los Altos
- October 2026: CR Scores recalculated for 757 general contractors serving Los Altos.
- October 2026: 7 duplicate listings merged.
More general contractors and Los Altos pages
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Other trades in Los Altos
- Roofers in Los Altos656 ranked
- Plumbers in Los Altos553 ranked
- Electricians in Los Altos423 ranked
- HVAC contractors in Los Altos498 ranked
- Painters in Los Altos188 ranked
- Landscapers in Los Altos212 ranked
- Handymen in Los Altos95 ranked
- Kitchen remodelers in Los Altos438 ranked
- Bathroom remodelers in Los Altos407 ranked
- Flooring contractors in Los Altos249 ranked
- Tile installers in Los Altos75 ranked
- Drywall contractors in Los Altos27 ranked
- Concrete contractors in Los Altos223 ranked
- Fence contractors in Los Altos112 ranked
- Deck builders in Los Altos88 ranked
- Siding contractors in Los Altos83 ranked
- Window installers in Los Altos268 ranked
- Gutter installers in Los Altos143 ranked
- Insulation contractors in Los Altos85 ranked
- Solar installers in Los Altos256 ranked
- Garage door repair companies in Los Altos200 ranked
- Foundation repair companies in Los Altos108 ranked
- Tree services in Los Altos238 ranked
- Masonry contractors in Los Altos102 ranked
- Water damage restoration companies in Los Altos357 ranked
- Home builders in Los Altos442 ranked
- Demolition contractors in Los Altos72 ranked
- All contractors in Los Altos