| Pacific Infrastructure | Mark Thomas Jorgenson | — | (925) 249 0011 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |
| Pacific Ocean Marble Counter Tops & Tile Co | Hector Yovani Alvarado | — | (510) 571 0022 | Other | Hayward · Alameda County | — | — |
| Pacific Overland Construction Company | William Robert Marini | — | (510) 461 2180 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Pacific Painting | Pacific Painting | — | (925) 864 9281 | Windows, patio, painters | Dublin · Alameda County | — | — |
| Pacific Plumbing & Underground Construction | Joseph George Bechwati | — | (408) 894 9120 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Pacific Plumbing Systems INC | Ronald Richard Beesley | estimate@pacificplumbingsystems.com | (510) 567 9501 | Other | San Leandro · Alameda County | — | — |
| Pacific Premier Landscape INC | Buenrostro Octavio Sedano | — | (925) 895 6053 | Windows, patio, painters | Castro Valley · Alameda County | — | — |
| Pacific Rapid Builders & Design | Sergey Yevgenyevich Paramonov | — | (415) 789 6387 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Pacific Rim Plumbing INC | Donna M Griffith | — | (925) 443 3333 | Other | Livermore · Alameda County | — | — |
| Pacific Scaffold Co INC | David Jason Massey | — | (415) 333 0224 | Other | Oakland · Alameda County | — | — |
| Pacific Screen & Shade INC | Steven Alan Gandy | — | (510) 451 4198 | Other | Oakland · Alameda County | — | — |
| Pacific Signaling Systems | Aaron Christopher Eddy | — | (925) 828 2400 | Electricians | Livermore · Alameda County | — | — |
| Pacific Star Construction | Juan Carlos Vazquez | — | (415) 271 4021 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Pacific States - Io Envirinmental A Joint Venture | States Environmental Contractors INC Pacific | — | (925) 829 9220 | Windows, patio, painters | Dublin · Alameda County | — | — |
| Pacific States - Sukut A Joint Venture | States Environmental Contractors INC Pacific | — | (925) 829 9220 | Other | Dublin · Alameda County | — | — |
| Pacific States Environmental Contractors INC | Christopher John Hallum | — | (925) 361 1533 | Other | Dublin · Alameda County | — | — |
| Pacific States Insulation & Acoustical Contracting INC | Martin Ray Sims | — | (510) 433 1039 | Other | Oakland · Alameda County | — | — |
| Pacific Surfacing LLC | Seth Jacob Martinez | — | (510) 440 9494 | Other | Fremont · Alameda County | — | — |
| Pacific Tempo Electric | Fredrick Collyer Reed | diegosanchez.rs@gmail.com | (510) 589 0128 | Electricians | Alameda · Alameda County | — | — |
| Pacific Trenchless INC | Aidan Tony Honeyman | — | (510) 986 0244 | Other | Oakland · Alameda County | — | — |
| Pacific Welding & Machine | Cathleen Dale Ledbetter | — | (510) 783 2300 | Other | Hayward · Alameda County | — | — |
| Pacifica Construction | Michael James Kirby | — | (510) 332 6379 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Package Unit Pros | Joseph Brad Williams | info@packageunitpros.com | (510) 887 2900 | HVAC | Hayward · Alameda County | — | — |
| Packet Fusion INC | John David Ghyselinck | — | (925) 701 2050 | Other | Pleasanton · Alameda County | — | — |
| Paco Plumbing & Rooter | Paco Plumbing & Rooter | — | (510) 586 1575 | Other | Hayward · Alameda County | — | — |
| Padam Builders INC | Singh Bhopinder | — | (510) 565 6667 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Padilla Custom Homes INC | Francisco Javier Padilla Guerra | — | (415) 271 8839 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Padilla Masonry INC | Padilla Salvador | — | (925) 594 0187 | Other | Livermore · Alameda County | — | — |
| Padron Construction | Jose Luis Padron | — | (510) 301 8963 | GC, remodel, ADU | San Lorenzo · Alameda County | — | — |
| Pagano Pacific Construction | Robert William Pagano | — | (510) 352 7021 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Paint Plus INC | Manuel De Jose Garcia | info@paint-plus.com | (510) 499 7464 | Windows, patio, painters | Oakland · Alameda County | — | — |
| Painternet INC | Jose Guadalupe Esteva Martinez | — | (415) 401 5600 | Windows, patio, painters | Oakland · Alameda County | — | — |
| Painting By Ashbe Corp | Jose Jovan Gonzalez | — | (510) 388 8392 | Windows, patio, painters | Alameda · Alameda County | — | — |
| Painting Quality Expert | Painting Quality Expert | — | (209) 200 3383 | Windows, patio, painters | Hayward · Alameda County | — | — |
| Painting The Bay | Benjamin Seiji Brunetti | — | (510) 800 2318 | Windows, patio, painters | Berkeley · Alameda County | — | — |
| Palace Construction Group | Palacios Ana Espejo | — | (650) 600 2353 | GC, remodel, ADU | Newark · Alameda County | — | — |
| Palace Tiles INC | Romanel Sergey | — | (510) 314 3096 | Other | Castro Valley · Alameda County | — | — |
| Palacios Brother Construction | Palacios Adam | — | (510) 967 8225 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Paladin Home | Paladin Home | — | (510) 205 3856 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Palencia Electric | Ruben Natanael Sr Palencia | — | (415) 948 7598 | Electricians | Oakland · Alameda County | — | — |