| Spediacci Construction INC | Daniel Gene Spediacci | admin@spedconst.com | (209) 954 9282 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Speed Drain Of Jae Lee Plumbing | Lee Jae Chen | — | (408) 839 8609 | Other | Mountain House · San Joaquin County | — | — |
| Speelman Excavation INC | Harold Pete Speelman | — | (209) 599 1656 | Other | Ripon · San Joaquin County | — | — |
| Spencer Flooring & Paint | Kenneth Steven Mc Carthy | — | (209) 835 5537 | Windows, patio, painters | Tracy · San Joaquin County | — | — |
| Spencer L Barker | Spencer L Barker | — | (209) 430 4400 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Spring Creek Pool & Spa INC | Gregory Scott Wheatley | — | (209) 599 5502 | Pool | Stockton · San Joaquin County | — | — |
| Square 1 Flooring INC | Michael Leon Smith | — | (760) 686 1816 | Other | Manteca · San Joaquin County | — | — |
| Srj Lath & Plaster INC | Ramirez Sergio Delacruz | — | (209) 263 1945 | Other | Lodi · San Joaquin County | — | — |
| Ssg Construction | Maria Gonzalez Saul Santa | — | (204) 938 8852 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Stacy Plastering INC | Kathleen Marie Stacy | — | (209) 948 0394 | Other | Stockton · San Joaquin County | — | — |
| Stagnaro Painting | Stagnaro Painting | — | (209) 471 5147 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Star Mechanical | Singh Harsharan | — | (209) 629 6512 | HVAC | Manteca · San Joaquin County | — | — |
| Star-line Construction | Sebastian Ndifor Mofor | — | (510) 499 4522 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Start Tile | Start Tile | — | (209) 276 4667 | Other | Manteca · San Joaquin County | — | — |
| States Signs LLC | Ryan Michael Bates | — | (209) 312 6700 | Other | Tracy · San Joaquin County | — | — |
| Status Elite Builders LLC | Brian Fernando Vasquez | — | (707) 230 4560 | GC, remodel, ADU | Lathrop · San Joaquin County | — | — |
| Stead Backflow Prevention Services INC | Jennifer Garrard Haynes | — | (209) 712 2674 | Other | Lodi · San Joaquin County | — | — |
| Stebbins Of Stockton | Stebbins Of Stockton | — | (209) 467 1470 | Electricians | Stockton · San Joaquin County | — | — |
| Steckler Construction INC | Mike Edward Steckler | — | (209) 649 9719 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Steel Guard Fence Co | Kevin Dale Cotta | — | (209) 321 9603 | Other | Tracy · San Joaquin County | — | — |
| Steinberg Technology Service | David Charles Jr Steinberg | — | (209) 414 0642 | Electricians | Stockton · San Joaquin County | — | — |
| Stephens Floors | Stephens Floors | — | (209) 331 4502 | Other | Lodi · San Joaquin County | — | — |
| Steve Garrison Plumbing INC | Steven Dow Garrison | — | (209) 334 5759 | Other | Lodi · San Joaquin County | — | — |
| Steve M Evans Contractor | Steve M Evans Contractor | — | (925) 260 9803 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Steve's Drywall Repair INC | Stephen Russell Haner | — | (209) 406 2405 | Other | Stockton · San Joaquin County | — | — |
| Steve's Mobile Security Doors LLC | Kevin Michael Bertram | — | (209) 599 2043 | Alarm and generators | Ripon · San Joaquin County | — | — |
| Steve's Mobile Sunscreens INC | Wesley Ellis Jasper | — | (209) 835 5404 | Other | Ripon · San Joaquin County | — | — |
| Steven C Nelson | Steven C Nelson | — | (209) 815 0290 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Steven Evans Construction | Steven Wayne Evans | — | (209) 969 9555 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Steven L Schuetz Co | Steven Lee Schuetz | — | (209) 629 0046 | Electricians | Stockton · San Joaquin County | — | — |
| Steven Nobriga | Steven Nobriga | — | (209) 607 2688 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Steven W Dixon | Steven W Dixon | — | (209) 481 2936 | Electricians | Stockton · San Joaquin County | — | — |
| Stewart Concrete Construction | John Todd Stewart | — | (209) 271 9695 | Other | Stockton · San Joaquin County | — | — |
| Stewart Property Services INC | Aaron Jay Stewart | danny@stewartpropertyservices.com | (209) 599 6333 | Windows, patio, painters | Ripon · San Joaquin County | — | — |
| Sticks | Jonathan Aaron Nichol Weiss | — | (209) 518 2757 | Other | French Camp · San Joaquin County | — | — |
| Stiff Iron | Stiff Iron | — | (916) 496 0463 | Other | Escalon · San Joaquin County | — | — |
| Stirm Construction LLC | Marvin H Stirm | — | (209) 915 5133 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Stockton Ace Hardware INC | Mark Andrew Ivary | — | (209) 951 8050 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Stockton Fence & Material Co | Philip Dale Beghtel | — | (209) 466 3166 | Other | Stockton · San Joaquin County | — | — |
| Stockton Progressive Glass INC | Curtis Eugene Speaks | — | (209) 465 3583 | Windows, patio, painters | Stockton · San Joaquin County | — | — |