| Sb Residential INC DBA Florsheim Homes | Randeep Singh Bling | — | (209) 473 1106 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Sc Plumbing | Sc Plumbing | support@scplumbing.com | (209) 597 6477 | Other | Manteca · San Joaquin County | — | — |
| Sch Garage Door Parts & Services LLC | Tomasz Groszek | — | (209) 637 1312 | Other | Manteca · San Joaquin County | — | — |
| Schatz Construction & Restoration | Ryan Keith Schatz | — | (209) 400 7702 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Schmidt Remodel Construction Services | Carlos Samuel Schmidt | — | (209) 503 1736 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Schnelke Construction | Schnelke Andy | — | (209) 425 3507 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Schoolland Construction INC | Gregory James Schoolland | — | (209) 573 2536 | GC, remodel, ADU | Ripon · San Joaquin County | — | — |
| Schrader Mechanical INC | Christopher Eugene Schrader | — | (209) 369 6888 | HVAC | Lodi · San Joaquin County | — | — |
| Schultz Construction | Paul Alan Schultz | office@schultzconstruction.com | (209) 329 0756 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Schweiger Plumbing INC | Stephen John Schweiger | — | (209) 833 3941 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Sciens Cen-cal Fire Systems Division | Wayne Neil Weisz | — | (209) 334 9119 | Other | Lodi · San Joaquin County | — | — |
| Scot's Custom Wiring INC | Scot Jerald Shuey | — | (510) 368 9728 | Electricians | Tracy · San Joaquin County | — | — |
| Scott Bratcher Construction A Partnership | Scott Allen Bratcher | — | (209) 481 8141 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Scott Thurston Painting | Scott Thurston Painting | — | (209) 329 8771 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Scr Construction INC | Ramirez Salustrio Contreras | — | (209) 501 5844 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Scully's Air | Scully's Air | — | (209) 610 4268 | HVAC | Escalon · San Joaquin County | — | — |
| Seco Plumbing INC | Timothy Dale Simpson | — | (209) 333 1777 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Security Lock And Key Service | Glenn Allen Glissman | — | (209) 368 1054 | Alarm and generators | Lodi · San Joaquin County | — | — |
| Select Building Services | Roger Andrew Vincelet | — | (209) 466 4601 | HVAC | Stockton · San Joaquin County | — | — |
| Select Stone Incorporated | Esteban Alvarado | — | (209) 329 7368 | Other | Lodi · San Joaquin County | — | — |
| Sentry Survelliance | Sentry Survelliance | — | (209) 365 3646 | Other | Linden · San Joaquin County | — | — |
| Septic Install Experts | Christopher James Burress | — | (209) 227 9469 | Other | Thornton · San Joaquin County | — | — |
| Serna Construction | Serna Placido | — | (209) 952 4635 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Serrano Gen Construction | Magana Dagoalberto Alvarez | — | (408) 933 8790 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Serrato Electric INC | Edward Abel Serrato | — | (209) 814 4198 | Electricians | Tracy · San Joaquin County | — | — |
| Servant King Demolition | Carlos Christopher Walker | info@servantkingdemolition.com | (209) 938 7407 | Other | Stockton · San Joaquin County | — | — |
| Service King Electric | Jorge Cuellar Jr Guizar | — | (408) 483 2367 | Electricians | Manteca · San Joaquin County | — | — |
| Service Master Of Stockton / Tracy / Manteca | Ganeshwaran Mudaliar | — | (209) 463 2349 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Service Rangers LLC | Adam Hassin Asumari | — | (510) 882 5821 | Other | Tracy · San Joaquin County | — | — |
| Servicemaster Advantage | Brock Joseph Mathews | — | (209) 333 1880 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Servpro Of Lodi | Perry William Morris | — | (209) 368 6119 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Severson Heating & Air INC | Michael Curtis Severson | — | (209) 305 8860 | HVAC | Lathrop · San Joaquin County | — | — |
| Seyer Corporation | Christopher Reyes | — | (408) 858 3131 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Sf Renovation Company | Hernandez Francisco | — | (408) 316 5653 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Shadow Valley Construction | Luis Alberto Quezada | — | (209) 812 5085 | Other | Stockton · San Joaquin County | — | — |
| Shaun Riley Electric INC | Christopher Anthony Riley | — | (209) 612 7494 | Electricians | Manteca · San Joaquin County | — | — |
| Shawver Tile | Shawver Tile | — | (209) 915 4667 | Other | Stockton · San Joaquin County | — | — |
| Sheila Rene Piona DBA Central Valley Sealing | Central Valley Sealing | — | (209) 823 7205 | Other | Manteca · San Joaquin County | — | — |
| Sheldrake & Mumford INC | Steven Edward Mumford | — | (510) 909 0657 | Other | Tracy · San Joaquin County | — | — |
| Sher Construction INC | Aisha Sher | info@sherconstruction.com | (510) 224 6462 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |