| Universal Plumbing INC | Pablo Mario Mendoza | — | (510) 437 0275 | Other | Oakland · Alameda County | — | — |
| Universe Construction | Hristo Kirilov Angelov | — | (510) 367 7094 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Universe Painting INC | Hristo Kirilov Angelov | — | (510) 367 7094 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Up Home Builders | Up Home Builders | — | (510) 502 6519 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Uplink Cabling | Uplink Cabling | — | (925) 518 2195 | Other | Livermore · Alameda County | — | — |
| Upright Construction INC | Cheng Zhinong | — | (415) 987 9606 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Upscale Floors LLC | Qui Minh Lam | — | (510) 928 4954 | Other | San Leandro · Alameda County | — | — |
| Urban Ascent Construction LLC | Vincent John William Mardigras | — | (510) 326 3196 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Urban Design Build LLC | John Ransom Phillips | — | (510) 368 5343 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Urban Edge | Urban Edge | — | (510) 507 5565 | Other | Oakland · Alameda County | — | — |
| Urban Fix | Urban Fix | — | (510) 593 0773 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Urban Flooring Contractors INC | Mumin Pajalic | — | (510) 593 7335 | Other | Hayward · Alameda County | — | — |
| Urban Graphics INC | Charlie Chin Yan Hung | interested@domainmarket.com | (415) 282 5342 | Other | San Leandro · Alameda County | — | — |
| Urban Visions | Urban Visions | — | (510) 220 4433 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Uribe Construction | Uribe-lopez Gilberto | julian@uribeconstruction.com | (510) 593 6732 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Urv Projects | Urv Projects | info@urvprojects.com | (925) 450 3030 | Other | Pleasanton · Alameda County | — | — |
| Usact Corporation | Mehari Aman Teklebrehan | — | (859) 999 3781 | Other | Oakland · Alameda County | — | — |
| Usattic Insulation Corp | Eilon Morav | — | (510) 880 9065 | Other | Hayward · Alameda County | — | — |
| Uscanuy Contractors | Robert Nelson Hernandez Rodriguez | — | (510) 393 1075 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Usl General Building | Usl General Building | — | (510) 927 6614 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Utama Construction | Douglas Yeekwoi Chin | — | (510) 342 9333 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Utilitix Pipelines INC | Camacho Alejandro | hello@rfuenzalida.com | (510) 978 8093 | Other | Hayward · Alameda County | — | — |
| Utmate Powers INC | Joseph Frank Jr Scerbo | — | (925) 580 6156 | HVAC | Fremont · Alameda County | — | — |
| V & B Excavating & Grading INC | Vicente Correa | — | (510) 896 8489 | Other | Fremont · Alameda County | — | — |
| V A Construction Vargas Aguilar INC | Vargas Guzman Ulises | — | (510) 395 5436 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| V C Electric | Victor Manuel Chavez | — | (925) 699 0355 | Electricians | Dublin · Alameda County | — | — |
| V N S Construction | Thanh Van Le | — | (510) 910 3021 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| V P Builder | V P Builder | — | (510) 557 0845 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| V P Hauling & Demolition | Valcides Gomes Pereira | — | (510) 205 5840 | Windows, patio, painters | Berkeley · Alameda County | — | — |
| V P Painting | V P Painting | — | (510) 719 1159 | Windows, patio, painters | Newark · Alameda County | — | — |
| V R C Fire Protection | V R C Fire Protection | vrcfireprotection@gmail.com | (831) 713 0416 | Other | Newark · Alameda County | — | — |
| V R G Plumbing Co | Victor Rudy Garcia | — | (510) 847 4334 | Other | Oakland · Alameda County | — | — |
| V R Gee Construction | Victor Robert Patri Gee | — | (510) 708 6868 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| V T S Drilling LLC | Glenn David Reiss | — | (415) 378 0415 | Other | Hayward · Alameda County | — | — |
| Vaca Construction | Armando Gonzalez Baca | — | (408) 903 3943 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Vaca Painting | Vaca Painting | — | (510) 589 6350 | Windows, patio, painters | Castro Valley · Alameda County | — | — |
| Valadez Water Damage Remediation | Valadez Water Damage Remediation | — | (341) 221 8669 | Restoration | Hayward · Alameda County | — | — |
| Valdes Drywall INC | Valdes Gonzalez Enrique | — | (925) 980 1302 | Other | Livermore · Alameda County | — | — |
| Valdes Landscape Contractor | Valdes Ramirez Fernando | — | (510) 499 5600 | Windows, patio, painters | Oakland · Alameda County | — | — |
| Valdez Property Construction LLC | Alberto Valdez | — | (925) 518 6375 | GC, remodel, ADU | Livermore · Alameda County | — | — |