How do you decide the best companies in Concord?

Every business in Concord, CA is scored 0-100 from public review data across up to eight sources - rating quality, volume, source breadth, recency, consistency and owner responsiveness. Ranking is never for sale.

Which trades do you cover in Concord?

39 and growing - home services and construction, 24/7 emergency trades, medical and dental practices, and law firms. Pick a trade below to see its ranked list.

Is using RHAWK free for homeowners?

Yes. Browsing rankings and getting matched costs nothing. Companies pay only for introductions they accept.

How current are these Concord rankings?

Our crawlers re-scan on a rolling schedule, so scores move as new reviews land - usually within days of a change.

Top rated companies in Concord, CA

126 companies researched in Concord. Every business is scored 0-100 from review quality, volume, breadth across sources, and recency - not from who pays us.

Concord, CA 39 trades covered Ranked by RHAWK Score

Who we recommend

The three strongest companies in Concord by the data - and why each one earned the spot.

#1 pick

Perfect Star Heating, Cooling, & Electrical

RHAWK A

4.6 (591) 1 sources

Highest RHAWK Score - strongest overall evidence across every source we scanned.

Score card

#2 pick

Cali HVAC

RHAWK A

4.9 (118) 1 sources

Strong score with recent, consistent reviews from real customers.

Score card

#3 pick

Key Guard Locksmith

RHAWK B+

5.0 (50) 1 sources

Best star rating on this list at 5.0★ across scanned sources.

Score card

Best Concord companies by trade

Top 10 companies in Concord

Perfect Star Heating, Cooling, & Electrical

HVAC Contractors · Concord · CA

RHAWK A

4.6(591 reviews) 4.5★+ verified1 source verified - Yelp Independently scanned

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Cali HVAC

HVAC Contractors · Concord · CA

RHAWK A

4.9(118 reviews) 4.5★+ verified1 source verified - Yelp Independently scanned

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Key Guard Locksmith

locksmiths · Concord · CA

RHAWK B+

5.0(50 reviews) 4.5★+ verified1 source verified - Yelp Independently scanned

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GO Cleaning Service

house cleaning services · Concord · CA

RHAWK B+

4.7(150 reviews) 4.5★+ verified1 source verified - Yelp Independently scanned

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Warranted Plumbing Services

septic tank services · Concord · CA

RHAWK B+

4.9(273 reviews) 4.5★+ verified1 sources verified Independently scanned

“I could see why the 5 stars. Affordable, prompt response, guys came on time and did a good job with some of our outdoor spigot work. Thanks for your service!”
5.0Stephanie· via Yelp

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Mari Eli Cleaning Service

house cleaning services · Concord · CA

RHAWK B+

4.8(120 reviews) 4.5★+ verified1 source verified - Yelp Independently scanned

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ACS Air Conditioning Systems

HVAC Contractors · Concord · CA

RHAWK B+

4.8(83 reviews) 4.5★+ verified1 source verified - Yelp Independently scanned

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Advance Appliance

appliance repair services · Concord · CA

RHAWK B+

5.0(58 reviews) 4.5★+ verified1 source verified - Yelp Independently scanned

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Plumbing Geek

Plumbers · Concord · CA

RHAWK B+

4.9(58 reviews) 4.5★+ verified1 source verified - Yelp Independently scanned

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#10

ASI Alarms

home security system installers · Concord · CA

RHAWK B+

5.0(34 reviews) 4.5★+ verified1 source verified - Yelp Independently scanned

“ASI upgraded our outdated 1989 security system with current technology, reusing existing components where possible. The upgrade was executed with precision, expediency, and at a fair pric...”
5.0Den· via Yelp

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All 126 companies in Concord

Every business we track in Concord, CA - open any profile for its full score card and reviews.

Business owners

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Claim your business - free How ranking works

How we research companies in Concord

Our crawlers read what real customers already wrote in public, then apply one identical formula to every company. No surveys, no self-reported data, no paid placement.

We scan up to 8 public review sources

Google, Yelp, Facebook, BBB, Houzz, Angi, HomeAdvisor, Thumbtack, Nextdoor, HomeStars and industry-specific sites - not one platform's opinion.

Every company gets the same 0-100 score

Rating quality (30), review volume (20), source breadth (15), recency (12), consistency between sources (10), owner responsiveness (8) and data completeness (5).

Nobody can buy a position

There is no paid placement in this ranking. Companies can claim their profile to keep data current, but claiming never moves them up.

Rankings refresh continuously

Our crawlers re-scan businesses on a rolling schedule, so a company that starts collecting bad reviews drops - usually within days.

Read the full scoring methodology

Concord directory FAQ

Top companies in the Bay Area Top Companies tool How the RHAWK Score works