| H S Naraghi | H S Naraghi | — | (415) 298 1095 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| H T O Plumbing And Radiant | Thomas John Modelski | — | (510) 864 1080 | HVAC | Alameda · Alameda County | — | — |
| H V P General Contractor | H V P General Contractor | — | (510) 714 9907 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Haan Construction LLC | Johaan Alexis Hill | — | (925) 413 3414 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Habitat Construction | Barzegar-jamshidi Fariborz | — | (510) 891 0301 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Habitat For Humanity East Bay/silicon Valley INC | Janice Elaine Jensen | — | (510) 251 6304 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Habitat Horticulture LLC | David Arthur Brenner | hello@habitathorticulture.com | (415) 684 8555 | Windows, patio, painters | Berkeley · Alameda County | — | — |
| Hacienda Pool Environments INC | Alison Jean Francis | — | (925) 453 2262 | Pool | Livermore · Alameda County | — | — |
| Hai Luu Construction INC | Hai Zhong Zhou | — | (415) 866 4345 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Hai Zhong Zhou | Hai Zhong Zhou | — | (415) 606 0022 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Halco Roofing Incorporated | Gilberto Castaneda | — | (925) 373 7367 | Other roofers | Livermore · Alameda County | — | — |
| Hale Repair Services LLC | Miguel Angel Sr Zamora Munar | — | (650) 855 2900 | Other | Dublin · Alameda County | — | — |
| Haman Construction | Jeffrey Frank Haman | — | (510) 278 5335 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Hamilton Exteriors | Hamilton Exteriors | — | (650) 977 3351 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Hammad Refrigeration | Hammad Refrigeration | — | (510) 575 3019 | HVAC | San Leandro · Alameda County | — | — |
| Hammer & Associates | E Hines | — | (510) 482 3000 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Hammer Construction | Lopez Arizaga Roberto | — | (510) 228 8832 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Han Flooring INC | Alvarado Andrea Suarez | — | (510) 921 9643 | Other | Hayward · Alameda County | — | — |
| Han Lin Xu | Han Lin Xu | — | (510) 427 6113 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Hand Rails Unlimited | Hand Rails Unlimited | mark@handrailsunlimited.com | (510) 585 5769 | Other | Fremont · Alameda County | — | — |
| Hang's Electric | Xu Hangyu | — | (510) 909 8893 | Electricians | Hayward · Alameda County | — | — |
| Hannon Construction Company INC | James Patrick Hannon | — | (650) 375 1010 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Hans Thiering Masonry LLC | Hans Wilhelm Thiering | — | (510) 523 6348 | Other | Alameda · Alameda County | — | — |
| Hansen Landscape Contractors INC | Steven Luther Hansen | — | (510) 537 0464 | Windows, patio, painters | Castro Valley · Alameda County | — | — |
| Hao Wu | Hao Wu | — | (650) 868 7766 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Happy Bay Construction INC | Daniel Patrick Harr | — | (909) 729 6080 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Happy Garage Door Repair LLC | Saeed Oudah Ibrahim | — | (415) 716 2874 | Other | Hayward · Alameda County | — | — |
| Happy Heating & Air | Lynelle Dawn Wood | — | (510) 850 2907 | HVAC | Hayward · Alameda County | — | — |
| Happy Home Builders | Happy Home Builders | — | (510) 912 4838 | GC, remodel, ADU | Emeryville · Alameda County | — | — |
| Happy House Construction | Qian Zhang | — | (669) 202 2222 | GC, remodel, ADU | Newark · Alameda County | — | — |
| Hardwood Floor Masters | Hardwood Floor Masters | — | (510) 429 9388 | Other | Union City · Alameda County | — | — |
| Hardy And Sons | Hardy And Sons | — | (510) 336 1000 | Windows, patio, painters | Oakland · Alameda County | — | — |
| Harkness Gardens Landscaping Services | Paul Hayes Jr Harkness | — | (510) 549 6419 | Windows, patio, painters | Berkeley · Alameda County | — | — |
| Harman Electricals | Singh Kuljeet | — | (925) 580 8045 | HVAC | Dublin · Alameda County | — | — |
| Harmony Home Construction | Henry Guoli Huang | — | (415) 722 0940 | Electricians | Fremont · Alameda County | — | — |
| Harmony Tile And Marble | Harmony Tile And Marble | — | (510) 735 7663 | Other | Alameda · Alameda County | — | — |
| Harold Hutson Construction | Harold Wayne Hutson | — | (510) 789 6610 | Other | Newark · Alameda County | — | — |
| Harris Water Heaters INC | Bryan Alan Harris | info@harriswaterheaters.com | (877) 946 8426 | Other | Castro Valley · Alameda County | — | — |
| Harry Clark Heating & Air Conditioning INC | Don A Marshall | — | (510) 444 1960 | HVAC | Oakland · Alameda County | — | — |
| Harry Clark Plumbing And Heating INC | Brad F Marshall | — | (510) 444 1776 | HVAC | Oakland · Alameda County | — | — |