| Nordvik Designs Incorporated | Kurt Walter Nordvik | — | (510) 719 9114 | GC, remodel, ADU | Angels Camp · Calaveras County | — | — |
| Old School Hardwood Floor Co | James Earl Pryor | — | (209) 736 8042 | Other | Murphys · Calaveras County | — | — |
| Oliver Construction | Brian Kevin Oliver | — | (209) 601 0956 | GC, remodel, ADU | Copperopolis · Calaveras County | — | — |
| One Chance Metal Works INC | Chance Dalton Castro | — | (925) 724 8227 | Other | Valley Springs · Calaveras County | — | — |
| Ormond Construction | Bryan William Ormond | tommy@ormondconstruction.com | (502) 419-6072 | GC, remodel, ADU | Angels Camp · Calaveras County | — | — |
| Osorio's Renovation INC | Osorio Velasco Alvaro | — | (916) 474 1899 | GC, remodel, ADU | Wallace · Calaveras County | — | — |
| P & D Builders INC | Paul David Bertini | — | (209) 795 2935 | GC, remodel, ADU | Arnold · Calaveras County | — | — |
| P M Huston Construction | Pleasant Merrit Iii Huston | — | (209) 747 2374 | GC, remodel, ADU | Valley Springs · Calaveras County | — | — |
| P W R West INC | William Leonard Craig | — | (209) 304 7919 | Electricians | Mountain Ranch · Calaveras County | — | — |
| Paradise Paintings | Paradise Paintings | — | (209) 332-0310 | Windows, patio, painters | Ione · Calaveras County | — | — |
| Paragon Flooring | Paragon Flooring | — | (209) 346 6299 | Other | Copperopolis · Calaveras County | — | — |
| Parris Scott Roofing INC | Parris Garner Scott | — | (209) 795 2073 | Other roofers | Arnold · Calaveras County | — | — |
| Pat Murphy Plumbing And Backhoe INC | Marion Edward Murphy | — | (209) 754 4277 | Other | San Andreas · Calaveras County | — | — |
| Paul Calderon | Paul Calderon | — | (714) 624 6152 | Other | Angels Camp · Calaveras County | — | — |
| Paulden Construction LLC | Paul Andrew Paulden | — | (209) 380 5316 | GC, remodel, ADU | Angels Camp · Calaveras County | — | — |
| Peffer's Tree Service | Robert James Peffer | — | (209) 401 7189 | Tree | Angels Camp · Calaveras County | — | — |
| Perez Plumbing | Perez Plumbing | — | (209) 273 9897 | Other | Valley Springs · Calaveras County | — | — |
| Performance Based Heating And Air INC | Jacob Andrew Arnol Klein | — | (209) 550 1444 | HVAC | Copperopolis · Calaveras County | — | — |
| Peri Street Welding | Peri Street Welding | — | (209) 736 2690 | Other | Altaville · Calaveras County | — | — |
| Perry Co Design & Construction INC | Michael Frederick Perry | — | (925) 640 2109 | GC, remodel, ADU | Murphys · Calaveras County | — | — |
| Pete Wagner Jr | Pete Wagner Jr | — | (209) 768 0652 | GC, remodel, ADU | Avery · Calaveras County | — | — |
| Peterson Construction | Kenneth James Peterson | — | (209) 768 8878 | GC, remodel, ADU | Hathaway Pines · Calaveras County | — | — |
| Philip Michael Murphy INC | Philip Michael Murphy | — | (209) 770 1598 | Other roofers | Murphys · Calaveras County | — | — |
| Philip's Paradise Landscaping | Philip's Paradise Landscaping | — | (209) 754 1468 | Windows, patio, painters | Mountain Ranch · Calaveras County | — | — |
| Pier & Son Painting | Pier & Son Painting | hello@rfuenzalida.com | (916) 539-3268 | Windows, patio, painters | Ione · Calaveras County | — | — |
| Pinnell's Carpet One | Daniel John Pinnell | — | (209) 736 8077 | GC, remodel, ADU | Angels Camp · Calaveras County | — | — |
| Polimeno Construction | John Polimeno | — | (209) 456 0443 | GC, remodel, ADU | Altaville · Calaveras County | — | — |
| Power One Painting Corporation | Liubov Petrivna Jacobs | — | (209) 622 8364 | Windows, patio, painters | Burson · Calaveras County | — | — |
| Pranes Construction | James Norman Pranes | — | (209) 605 0678 | GC, remodel, ADU | Copperopolis · Calaveras County | — | — |
| Precision Decks INC | Wade Paul Carter | — | (209) 470 2287 | Windows, patio, painters | Murphys · Calaveras County | — | — |
| Premier Properties | Premier Properties | nterri@premierproperties.com | (209) 728-2888 | Property managers | Murphys · Calaveras County | — | — |
| Prescott Industrial Services | Alexander Ross Prescott | — | (209) 743 7769 | Other | Angels Camp · Calaveras County | — | — |
| Prest Construction | George Alvin Prest | — | (209) 728 2569 | GC, remodel, ADU | Vallecito · Calaveras County | — | — |
| Prime Floorz | Prime Floorz | — | (925) 302 3495 | Other | Angels Camp · Calaveras County | — | — |
| Pro-tech Builders | Pro-tech Builders | — | (209) 981 6255 | GC, remodel, ADU | Valley Springs · Calaveras County | — | — |
| Proper Pruning Service INC | Christopher Lance Rinauro | — | (209) 728 9494 | Tree | Murphys · Calaveras County | — | — |
| Propertysourced Property Management | Propertysourced Property Management | — | (209) 880-3265 | Property managers | Manteca · Calaveras County | — | — |
| Protouch Painting | Protouch Painting | — | (209) 418 9640 | Windows, patio, painters | Mokelumne Hill · Calaveras County | — | — |
| Purepest Services | Purepest Services | — | (760) 767-5377 | Pest, tile roofs | Borrego Springs · Calaveras County | — | — |
| Quintana's General Contractor INC | Rivera Victor Quintana | — | (916) 416 6803 | GC, remodel, ADU | Valley Springs · Calaveras County | — | — |