| Plough Construction INC | Gregory Richard Plough | — | (707) 207 0208 | GC, remodel, ADU | Fairfield · Solano County | — | — |
| Plumber By Trade Whitfield Company | Joseph Henry Sr Whitfield | — | (707) 426 4993 | Other | Fairfield · Solano County | — | — |
| Plumbing By Shipley | Plumbing By Shipley | — | (707) 450 6648 | Other | Vacaville · Solano County | — | — |
| Plumbing M D INC DBA Plumbing Doctor | Taylor Isaacs Farias | — | (530) 756 2209 | HVAC | Dixon · Solano County | — | — |
| Plumbing Piping Systems Services | Frederick John Long | — | (707) 639 0991 | Other | Vacaville · Solano County | — | — |
| Plumbing Solutions | Plumbing Solutions | — | (707) 333 4094 | HVAC | Fairfield · Solano County | — | — |
| Poncho's Flooring & Carpet INC | Francisco Alfonso Arriaga Manjarrez | — | (707) 656 1534 | Other | Suisun City · Solano County | — | — |
| Ponder Environmental Services INC | Justin D Ponder | — | (707) 748 7775 | Other | Benicia · Solano County | — | — |
| Pool Covers INC | Brian Edward Reisbeck | — | (707) 864 6674 | Other | Fairfield · Solano County | — | — |
| Portalia Construction | Paulo Marco Morgado | — | (510) 427 1040 | GC, remodel, ADU | Fairfield · Solano County | — | — |
| Portes Hill Construction INC | Ramiro Ortiz Toscano | — | (707) 334 0112 | GC, remodel, ADU | Fairfield · Solano County | — | — |
| Power Framing Construction | Verduzco Jaimes Benito | — | (707) 816 2432 | GC, remodel, ADU | Suisun City · Solano County | — | — |
| Preciado's Landscaping | Preciado's Landscaping | — | (707) 299 9515 | Windows, patio, painters | Fairfield · Solano County | — | — |
| Precision Air Solutions | Precision Air Solutions | — | (707) 741 1993 | HVAC | Benicia · Solano County | — | — |
| Precision Construction & Integration INC | Charlie Abalos Lapurga | — | (202) 528 3211 | Electricians | Fairfield · Solano County | — | — |
| Precision Masonry | Precision Masonry | — | (707) 561 8007 | Other | Vallejo · Solano County | — | — |
| Precision Plus Heating And Air | Precision Plus Heating And Air | — | (707) 694 9266 | HVAC | Vacaville · Solano County | — | — |
| Precision Shotcrete | Precision Shotcrete | info@precisionshotcrete.com | (209) 857 9259 | Other | Dixon · Solano County | — | — |
| Precision Stairworks INC | Juan Martin Raygoza Rodriguez | precisionstairworksinc@gmail.com | (707) 241 6383 | Other | Vallejo · Solano County | — | — |
| Prefabadu | Stephen Anthony Vallejos | — | (925) 525 4900 | GC, remodel, ADU | Fairfield · Solano County | — | — |
| Premier Generation Electric | Jose Alejandro Olmedo | — | (707) 207 1500 | Electricians | Fairfield · Solano County | — | — |
| Premier Pools & Spas | Taylor Ray Mehlhaff | — | (707) 428 4411 | Pool | Vacaville · Solano County | — | — |
| Premier Pools And Spas | Michael William Godwin | — | (707) 428 4411 | Pool | Vacaville · Solano County | — | — |
| Premium Level Drywall | Premium Level Drywall | — | (707) 386 2358 | Other | Vacaville · Solano County | — | — |
| Prestige Electrical | Dominik Bartholemew Messano | — | (707) 688 2180 | Electricians | Suisun City · Solano County | — | — |
| Prestige Worldwide Plumbing LLC | Alexander Victor Hurtado | — | (415) 533 9659 | Other | Fairfield · Solano County | — | — |
| Prevail Painting | Prevail Painting | — | (707) 450 9025 | Windows, patio, painters | Vacaville · Solano County | — | — |
| Price Is Right Construction | Rodney Wayne Greer | pirec10@yahoo.com | (707) 689 3207 | GC, remodel, ADU | Dixon · Solano County | — | — |
| Prime Baja Cali Builders | Javier Israel Flores Rico | info@velazgarciaframing.com | (707) 689 9919 | GC, remodel, ADU | Dixon · Solano County | — | — |
| Prime Builders | Prime Builders | — | (707) 249 5550 | GC, remodel, ADU | Dixon · Solano County | — | — |
| Prime Concrete Construction | Duenas Oscar | — | (707) 563 4549 | Other | Vallejo · Solano County | — | — |
| Primetek Field Solutions INC | Tynon Erik Amonett | — | (707) 718 2140 | Other | Vacaville · Solano County | — | — |
| Primo Tile | Willie Glenn Perdew | — | (707) 635 3274 | Other | Fairfield · Solano County | — | — |
| Pristine Gardens Landscaping | Pristine Gardens Landscaping | — | (510) 289 6148 | Windows, patio, painters | Vallejo · Solano County | — | — |
| Private Diamond INC | Oscar Giovanni Morales Garcia | — | (707) 515 9027 | Other | Vallejo · Solano County | — | — |
| Pro Builder Solutions INC | Perez Eleasin Perez | — | (510) 260 5104 | GC, remodel, ADU | Vallejo · Solano County | — | — |
| Pro Connect Electrical INC | Joseph Peter Revera | — | (707) 655 8848 | Electricians | Vallejo · Solano County | — | — |
| Pro Gutter Solutions INC | Meraz Astorga Aurelio | — | (707) 333 2470 | Other | Vallejo · Solano County | — | — |
| Pro Line Piping LLC | Feruza Karimova | — | (415) 233 2979 | HVAC | Vacaville · Solano County | — | — |
| Pro Painter Gig | Pro Painter Gig | — | (925) 384 8431 | Windows, patio, painters | Dixon · Solano County | — | — |