| Owen Krebs Grimsich | Owen Krebs Grimsich | — | (510) 610 0749 | HVAC | Berkeley · Alameda County | — | — |
| Owow Construction LLC | Andrew John Ball | — | (650) 218 3119 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Ox Construction INC | Jackson Lung Lim | — | (510) 479 4316 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Oxilium Services INC | Damian Frederick Bolton | — | (925) 400 7350 | Other | Pleasanton · Alameda County | — | — |
| P & D Environmental INC | Paul Hayward King | — | (510) 658 6916 | Other | Oakland · Alameda County | — | — |
| P & S Construction | Richard Jerome Schuchert | — | (510) 849 2949 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| P A S INC | Kyle Thomas Roberts | — | (510) 440 1052 | HVAC | San Leandro · Alameda County | — | — |
| P C Construction Co | Phong Thanh Dinh | — | (510) 385 9251 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| P C Painting And Construction Co | Chuong Philong | — | (510) 708 4807 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| P D Construction And Landscaping | Phuong Duy Dao | — | (510) 828 8165 | GC, remodel, ADU | San Lorenzo · Alameda County | — | — |
| P E Chambers And Associates | Paul Edward Chambers | — | (510) 551 9674 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| P F C Remodeling INC | Paul Joseph Funaro | — | (925) 784 6129 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| P F P Builders INC | Prieto Pedro Figueroa | — | (650) 296 2768 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| P H Construction | Huynh Paul | — | (510) 499 5791 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| P J Electric Co | Patrick Eng | — | (510) 909 6066 | Electricians | San Leandro · Alameda County | — | — |
| P J Erwin Electric | Peter Joseph Erwin | pjerwinelectric@gmail.com | (510) 282 5015 | Electricians | Oakland · Alameda County | — | — |
| P J Plumbing INC | William Eugene Wells | — | (510) 415 5774 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| P K Construction | Paul Poolad Kordestani | — | (510) 522 5800 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| P R I-premiere Roofing INC | Jairo Reyes | info@pripremiereroofing.com | (925) 453 6240 | Other roofers | Livermore · Alameda County | — | — |
| P S L Electric | Phillip David Lopes | — | (510) 266 4047 | Electricians | Oakland · Alameda County | — | — |
| P S Plumbing & Fire Protection | Ray Vay A Ngo | — | (510) 714 3254 | Other | San Leandro · Alameda County | — | — |
| P Z Construction | Zhao Pengli | — | (510) 516 9439 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| P&m Landscaping | Phan Son | — | (510) 921 1719 | Windows, patio, painters | Fremont · Alameda County | — | — |
| Pablo General Contractor Dbmc | Pedro Pablo Matias | — | (510) 485 6529 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Pac Bay Environmental Services INC | Matthew Charles Certa | — | (510) 947 2800 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Pacfic States-tyrrell A Joint Venture | States Environmental Contractors INC Pacific | — | (925) 829 9220 | Tree | Dublin · Alameda County | — | — |
| Pacheaco Construction | Mark David Pacheaco | mark@pacheacoconstruction.com | (925) 443 2628 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Pacheco Glazer INC | Jorge Luis Pelaez | — | (510) 679 9718 | Windows, patio, painters | Hayward · Alameda County | — | — |
| Pacheco Landscape & Construction INC | Gary Louis Pacheco | — | (510) 487 3580 | Windows, patio, painters | Livermore · Alameda County | — | — |
| Pacheco Landscape Management INC | Karl Anthony Pacheco | you@organization.com | (510) 760 1808 | Windows, patio, painters | Castro Valley · Alameda County | — | — |
| Pacific Bay Electric | Wenilda Maria Sligh | — | (510) 865 2575 | Electricians | Alameda · Alameda County | — | — |
| Pacific Bay Remodeling | Danny Lopez | dan2lopez@yahoo.com | (408) 854 0077 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Pacific Best Builders | Nassif Abedelfattah Ayyad | — | (510) 472 3761 | GC, remodel, ADU | Dublin · Alameda County | — | — |
| Pacific Breeze Mechanical | Jonathan Elvis Wong | — | (408) 634 8220 | HVAC | Fremont · Alameda County | — | — |
| Pacific Building Construction INC | Chen Yu Xian | — | (510) 759 8264 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Pacific Coast Termite INC | Frank Ribeiro | — | (510) 252 0801 | Other | Fremont · Alameda County | — | — |
| Pacific Das | Bob Luhrs | — | (925) 223 8799 | Other | Pleasanton · Alameda County | — | — |
| Pacific Design LLC | Andrew Stephen Nicks | — | (650) 796 5188 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Pacific Estate Construction Group INC | Nicholas Ray Bruce | — | (510) 858 2577 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Pacific Fence | Pacific Fence | — | (510) 750 6124 | Other | Hayward · Alameda County | — | — |