| Hillside Construction | Sahebzada Najib | — | (925) 577 3274 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Hinkson Construction INC | Chris James Hinkson | — | (925) 497 8311 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Hirak Electric LLC | Djamel Benkaid | — | (925) 755 6928 | Electricians | Pacheco · Contra Costa County | — | — |
| Hkserv Electric | Francisco David Salvador Mendoza | — | (925) 642 3860 | Electricians | Antioch · Contra Costa County | — | — |
| Hm Concrete INC | Marvin Lee Himenez | info@hm-concrete.com | (925) 372 8148 | Other | Martinez · Contra Costa County | — | — |
| Hmd Construction INC | Kerry Lee Hilgers | — | (925) 584 2973 | GC, remodel, ADU | Brentwood · Contra Costa County | — | — |
| Hoang Huy Nguyen | Hoang Huy Nguyen | — | (925) 435 4972 | GC, remodel, ADU | Walnut Creek · Contra Costa County | — | — |
| Hoffman Masonry Construction | Michelle Marie Hoffman | — | (925) 788 0113 | Other | Brentwood · Contra Costa County | — | — |
| Holdaway Construction | Jason James Holdaway | eli@holdawayconstruction.com | (925) 726 7766 | GC, remodel, ADU | Oakley · Contra Costa County | — | — |
| Holder Construction Cleanup Services INC | Juan Carlos Ortega Hernandez | — | (408) 794 8869 | Other | Bay Point · Contra Costa County | — | — |
| Holland Brooks Builders INC | Jason Brooks Hadnot | — | (925) 566 8878 | GC, remodel, ADU | Martinez · Contra Costa County | — | — |
| Hollis Landscaping | Hollis Landscaping | — | (510) 774 5911 | Windows, patio, painters | Orinda · Contra Costa County | — | — |
| Home And Design Studio LLC | Zviad Zaqariadze | — | (925) 300 8811 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Home By Tom INC | Them Ngoc Tran | — | (925) 488 1888 | GC, remodel, ADU | Moraga · Contra Costa County | — | — |
| Home Counties Property Co INC | Peter Nicholas Schapiro | — | (925) 831 8089 | GC, remodel, ADU | Alamo · Contra Costa County | — | — |
| Home Front Heating And Air Conditioning INC | Randall Lee Walker | — | (925) 315 1468 | HVAC | Discovery Bay · Contra Costa County | — | — |
| Home Pavers | Home Pavers | — | (925) 655 7855 | Other | Concord · Contra Costa County | — | — |
| Home Quality Remodeling INC | Poliker Aharon | — | (925) 349 6084 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Home Remodelers Design & Build INC | Douglas Wayne Brown | — | (925) 829 4000 | GC, remodel, ADU | San Ramon · Contra Costa County | — | — |
| Home Select | Michael John Giosso | info@homeselect.com | (925) 698 3260 | GC, remodel, ADU | Alamo · Contra Costa County | — | — |
| Home Solutions | Home Solutions | — | (925) 451 6781 | GC, remodel, ADU | Oakley · Contra Costa County | — | — |
| Home Team Construction INC | Edgar Tejeda | — | (415) 509 6990 | GC, remodel, ADU | Pinole · Contra Costa County | — | — |
| Homepro Painters | Edward Gutierrez | — | (925) 628 9183 | Windows, patio, painters | Brentwood · Contra Costa County | — | — |
| Hometelligent INC | Silvio Daniel Dobrovat | — | (800) 298 2003 | GC, remodel, ADU | Pleasant Hill · Contra Costa County | — | — |
| Hometown Elite Pro Builders INC | Juan Manuel Silva Martinez | — | (510) 804 6644 | GC, remodel, ADU | Antioch · Contra Costa County | — | — |
| Hometown Heating And Air Conditioning | Brian Lloyd Waskow | — | (925) 933 9333 | HVAC | Concord · Contra Costa County | — | — |
| Hometown Pump Service | Angelo Glen Dejesus | — | (925) 628 2326 | Other | Brentwood · Contra Costa County | — | — |
| Homexperts INC | Hugo Garin Bugarini | info@homexpertsinc.com | (833) 699 7378 | Other roofers | Concord · Contra Costa County | — | — |
| Honest Flow Plumbing & Rooter | Salvador Joshua Franco | — | (415) 745 4508 | Other | Richmond · Contra Costa County | — | — |
| Honest Rodent Proofing INC | Dustin Jon Cromwell | customercare@honestrodentproofing.com | (925) 433 3988 | GC, remodel, ADU | Antioch · Contra Costa County | — | — |
| Honey Homes INC | Kimokeo John Madali | hello@honeyhomes.com | (510) 930-0732 | GC, remodel, ADU | Lafayette · Contra Costa County | — | — |
| Honrath & Stacey INC | Joseph Lawson England | — | (510) 237 5080 | HVAC | Richmond · Contra Costa County | — | — |
| Hood River | Hood River | — | (925) 470 8544 | Windows, patio, painters | Antioch · Contra Costa County | — | — |
| Hope's Painting & Maintenance Co | Yong Kwon Lee | — | (925) 381 1176 | Windows, patio, painters | Antioch · Contra Costa County | — | — |
| Hopper Construction | Ronald Dee Hopper | — | (530) 320 5000 | GC, remodel, ADU | San Ramon · Contra Costa County | — | — |
| Hopper Plumbing | Hopper Plumbing | — | (925) 207 8659 | Other | Danville · Contra Costa County | — | — |
| Horizon Building LLC | Stamatoiu Daniel | horizonbuilding@hotmail.com | (510) 415 7641 | GC, remodel, ADU | San Ramon · Contra Costa County | — | — |
| Horizon Development | Horizon Development | interested@domainmarket.com | (510) 215 9600 | Electricians | El Cerrito · Contra Costa County | — | — |
| Horizon Drywall INC | Anthony Joseph Goulart | — | (925) 679 7990 | Other | Brentwood · Contra Costa County | — | — |
| Horizon Electric Group LLC | David Alma Roundy | — | (732) 540 2840 | Electricians | Concord · Contra Costa County | — | — |