| Process Engineers INC | George Peter Cortessis | info@processengineers.com | (510) 782 5122 | Other | Oakland · Alameda County | — | — |
| Process Workshop LLC | Pikesh Vinubhai Desai | — | (925) 487 1559 | GC, remodel, ADU | Dublin · Alameda County | — | — |
| Professional Painting Solutions | Rodriguez Gustavo | — | (510) 461 9455 | Windows, patio, painters | Oakland · Alameda County | — | — |
| Proficient Landscape INC | Adam Patrick Jenkins | — | (209) 484 8290 | Windows, patio, painters | Livermore · Alameda County | — | — |
| Proforma Construction INC | Jeffery Brian Antrim | — | (925) 426 1317 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Progressive Assembly Corporation | Michael John Peter | — | (714) 620 5317 | Other | Union City · Alameda County | — | — |
| Progressive Plumbing & Rooters | Progressive Plumbing & Rooters | — | (510) 825 4639 | Other | Hayward · Alameda County | — | — |
| Project Plumbing And Rooter INC | Edgar Rojas Navarro | — | (510) 696 2183 | Other | Oakland · Alameda County | — | — |
| Prolific Construction | Miguel Angel Herrera | buildit@prolificconstruction.com | (925) 409 8053 | Other roofers | Pleasanton · Alameda County | — | — |
| Promise Construction | Rudolph Sau Shun Iv Burnett | — | (510) 414 2425 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Proper Plumbing Services LLC | Jason Paul Buckley | — | (650) 580 3846 | Other | Castro Valley · Alameda County | — | — |
| Properties Without Limits | Properties Without Limits | — | (408) 482 6135 | GC, remodel, ADU | San Lorenzo · Alameda County | — | — |
| Property Pros Construction INC | Michael David Luciani | — | (510) 938 3222 | Electricians | Castro Valley · Alameda County | — | — |
| Pros Alameda Roofing Repair | Pros Alameda Roofing Repair | — | (415) 662-3488 | Other roofers | Alameda · Alameda County | — | — |
| Prosper Construction Company | Chiu Nelson | — | (415) 725 3388 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Protean Steel | Protean Steel | — | (707) 921 9157 | Other | Alameda · Alameda County | — | — |
| Protection Contracting INC | Robert Charles Marlin | — | (925) 846 9484 | Electricians | Pleasanton · Alameda County | — | — |
| Protection Plus Security Services INC | Marcos Jr Rosado | — | (510) 770 9900 | Electricians | Fremont · Alameda County | — | — |
| Protective Coating Systems INC | Geoffrey Paul Nemeth | — | (510) 491 1020 | Other | Hayward · Alameda County | — | — |
| Proven Management INC | Joseph Patrick Gilmartin | — | (510) 671 0000 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Proworks | Jerrod Madison Gobel | contact@proworks.com | (510) 579 8903 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Prudencio Tile | Prudencio Tile | — | (510) 366 6003 | Other | Fremont · Alameda County | — | — |
| Pse Electrical Contractors | Oscar Fernando Xatruch Montoya | — | (510) 820 3756 | Electricians | Hayward · Alameda County | — | — |
| Pt Tile | Pt Tile | — | (510) 978 9990 | Other | Hayward · Alameda County | — | — |
| Ptr Remodeling Services INC | Tello Rico Pedro | — | (510) 209 2283 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Pu Chen | Pu Chen | — | (925) 788 4530 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Puga Construction | Eric Samuel Puga | — | (510) 355 5631 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Pulido's General Construction INC | Maricela Hernandez | — | (510) 760 6018 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Pulte Home Company LLC | John Malcolm Drew | — | (925) 249 3259 | Builders | Pleasanton · Alameda County | — | — |
| Pulte Homes Of California INC | Jason Bang-Shao Tong | — | (925) 249 3259 | Builders | Pleasanton · Alameda County | — | — |
| Punjab Construction | Kumar Ramesh | contact@punjabconstruction.com | (510) 220 0187 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Punstar Construction | Satbir Singh Kahlon | — | (510) 673 2703 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Pura Fe Landscaping INC | Victor Hugo Castro | — | (510) 384 0357 | Windows, patio, painters | Hayward · Alameda County | — | — |
| Purcell Electric | Kevin Scott Purcell | — | (510) 866 5953 | Electricians | Oakland · Alameda County | — | — |
| Pure Electric Solutions | Silva Salvador Campos | — | (510) 557 4177 | Electricians | Hayward · Alameda County | — | — |
| Pure Wood Flooring INC | Alejandro Gutierrez | — | (650) 455 2172 | Other | Hayward · Alameda County | — | — |
| Puronics Of Norcal LLC | Jason Chance Vertican | — | (866) 439 1489 | Other | Livermore · Alameda County | — | — |
| Purus INC | Richard Brian Burroughs | — | (925) 320 0999 | Electricians | Livermore · Alameda County | — | — |
| Puzzle Construction | Jiajun Ruan | — | (510) 398 9572 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Pye-barker Fire | David Michael Karrick | — | (801) 395 8731 | Other | Pleasanton · Alameda County | — | — |