| Herb Munoz Painting Cont | Herb Munoz Painting Cont | — | (510) 887 2655 | Windows, patio, painters | Hayward · Alameda County | — | — |
| Herco | Otto Rene Hernandez | — | (510) 220 4693 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Heritage Construction | George Cohen | impallari@gmail.com | (510) 604 0425 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Hernandez Electric | Hernandez Diaz Daniel | — | (209) 996 1536 | Electricians | Fremont · Alameda County | — | — |
| Hernandez Plumbing Services Partnership | Fredy Alberto Hernandez Lopez | — | (650) 834 2906 | Other | Hayward · Alameda County | — | — |
| Hernandez Tree Service | Hernandez Alfredo | — | (510) 415 0342 | Tree | Castro Valley · Alameda County | — | — |
| Herrera General Building | Herrera General Building | — | (415) 810 6965 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Herrera's Bay Area Painting INC | Ortiz Enrique Herrera | info@herreraspainting.com | (510) 343 1573 | Windows, patio, painters | Oakland · Alameda County | — | — |
| Hess Electric | Kurt Andrew Hess | — | (916) 917 6013 | Electricians | Piedmont · Alameda County | — | — |
| Hexagon Construction | Charles Va Hin | admin@hexagon.associates | (408) 821 4862 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Hfn Builder INC | Hamza Farrukh Naeem | hfnbuilder@gmail.com | (510) 449 1169 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Hi - Lo Builders | Hi - Lo Builders | — | (510) 940 3898 | Electricians | San Lorenzo · Alameda County | — | — |
| Hi - Tech Construction | Joseph Young Hall | — | (510) 246 1638 | Electricians | San Leandro · Alameda County | — | — |
| Hi Tech Roofing | Jason Woon Hur | — | (510) 289 9895 | Other roofers | Oakland · Alameda County | — | — |
| Hi Tech Termite Construction | John Paul Iii Williams | — | (510) 396 4210 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Hic Fire Protection INC | Cody Hall | — | (510) 745 4025 | Other | Pleasanton · Alameda County | — | — |
| Hidden Connections INC | Alice Sherman Lewis | — | (510) 865 3940 | Other | Alameda · Alameda County | — | — |
| Hidden Gem Gardening | Megan Jane Dodge | hiddengemgardening@gmail.com | (510) 353 3553 | Windows, patio, painters | Berkeley · Alameda County | — | — |
| Hideaway Acres Farm & Nursery LLC | Sarah Rose Beard Schwemberger | — | (510) 301 2216 | Windows, patio, painters | Oakland · Alameda County | — | — |
| Hien Ha | Hien Ha | — | (510) 512 8315 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| High 5 Builders INC | Derrick Allen High | — | (925) 605 8731 | Electricians | Livermore · Alameda County | — | — |
| High Construction INC | Becky Mari High | — | (925) 719 2895 | GC, remodel, ADU | Dublin · Alameda County | — | — |
| High Level Construction And Painting INC | Edwin I Hernandez Loza | — | (408) 728 3292 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| High Performance A / V INC | John Wade Dewey | — | (408) 410 8985 | Other | Dublin · Alameda County | — | — |
| High Standard Lighting And Electric | Robert Ormand Chapman | — | (925) 605 9290 | Electricians | Livermore · Alameda County | — | — |
| High Tech Construction | David Soon Lee | — | (510) 599 3132 | Electricians | Oakland · Alameda County | — | — |
| High Voltage Electric INC | Ricardo Miguel Albuquerque | — | (510) 610 8527 | Electricians | Hayward · Alameda County | — | — |
| Highcom Security Services INC | Manuel Abraham Andino | — | (510) 893 7600 | Electricians | Oakland · Alameda County | — | — |
| Highgate Construction | Chadwick Marvin Highgate | — | (310) 502 0174 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Highmark Roofing INC | John Chong Min Seo | — | (415) 237-3122 | Other roofers | Alameda · Alameda County | — | — |
| Hightower-gaskin Electrical Solutions | Shikiri Ho-Ling Fung Hightower-Gaskin | — | (510) 367 7234 | Electricians | Berkeley · Alameda County | — | — |
| Hill View Construction INC | Rakeshkumar Babubhai Patel | — | (919) 840 8343 | GC, remodel, ADU | Dublin · Alameda County | — | — |
| Hillsborough Electric | Robert Homar Williams | — | (650) 343 5125 | Electricians | Hayward · Alameda County | — | — |
| Hilltop Asbestos Abatement Corp | Fernando Rivas | — | (510) 610 0752 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Hilltown Plumbing LLC | Marcial Elizardo Garcia Lopez | hilltownplumbing@gmail.com | (510) 559 0150 | Other | Oakland · Alameda County | — | — |
| Hintz's Company | Oscar Ernesto Hintz Lemus | — | (832) 869 8550 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Hirano Construction INC | Peter John Hirano | — | (510) 655 0489 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Hirst Shafer Construction And Development | Keith Bryant Howard | — | (925) 858 6543 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |
| Hitachi High-tech America INC | Derrick Martin Smith | — | (847) 273 4141 | Other | Pleasanton · Alameda County | — | — |
| Hitek Electrical | Aurelio Jr Pena Vega | — | (510) 880 5829 | Electricians | Hayward · Alameda County | — | — |