| San Joaquin Door & Supply INC | Paul Michael Naumes | — | (805) 642 6600 | Other | Ojai · Ventura County | — | — |
| San Mag Plastering INC | Ramon Sr Sanchez Magana | — | (805) 574 9226 | Other | Santa Paula · Ventura County | — | — |
| San Ventura | San Ventura | — | (805) 522-1887 | Other roofers | Simi Valley · Ventura County | — | — |
| Sanchez Earthworks INC | Remigio Salvador Sanchez | — | (805) 388 8854 | Other | Camarillo · Ventura County | — | — |
| Sandoval Plastering INC | Sandoval Salvador | — | (818) 773 8765 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Sandoval's Construction Co | Gabriel Sandoval | sandovalsconstructionco@gmail.com | (805) 844 0489 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Sands Pool And Spa Service | Tracy Bruton Sands | — | (714) 726 4059 | Pool | Ventura · Ventura County | — | — |
| Santanas Plumbing INC | Benjamin Gonzalez Santana | — | (805) 795 0031 | Other | Oxnard · Ventura County | — | — |
| Santor Plumbing INC | Joshua Richard Santor | santorplumbing@gmail.com | (805) 630 0487 | Other | Simi Valley · Ventura County | — | — |
| Santora Construction INC | Steven John Santora | steve@santoraconstruction.com | (805) 432 0833 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Sapien General Construction INC | Mario Barron Sapien | — | (805) 889 0901 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Sarahang Construction INC | Faraz Karim Sarahang | — | (818) 402 4268 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Sarnelle Construction Corp | Robert Brian Sarnelle | — | (818) 399 7878 | Electricians | Westlake Village · Ventura County | — | — |
| Sarrocco Construction | Anthony Raymond Sarrocco | — | (805) 276 2664 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| Sasha Maksic DBA Agoura Tile | Sasha Maksic DBA Agoura Tile | — | (805) 432 5655 | Other | Newbury Park · Ventura County | — | — |
| Sauve Custom Tile | Sauve Custom Tile | — | (805) 795 1557 | Other | Oxnard · Ventura County | — | — |
| Savoie Construction INC | Lanny Lee Savoie | — | (805) 490 6258 | GC, remodel, ADU | Newbury Park · Ventura County | — | — |
| Sawdust Custom Cabinets INC | Jeffrey William Peterson | — | (805) 384 3588 | Other | Camarillo · Ventura County | — | — |
| Sawdust Ltd | Bruce Thomas Hennig | — | (626) 379 0101 | Other | Camarillo · Ventura County | — | — |
| Sawyer Construction Management Incorporated | David Martin Sawyer | — | (949) 295 5200 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Say Watt Electric | Jose De Jesus Arreola Villa | — | (323) 508 5559 | Electricians | Simi Valley · Ventura County | — | — |
| Sb Rebar INC | Nikolaus Henry Schiele | — | (805) 210 4864 | Other | Simi Valley · Ventura County | — | — |
| Sc Construction | Steve Bruce Carrington | — | (805) 660 9763 | GC, remodel, ADU | Newbury Park · Ventura County | — | — |
| Sc Restoration Plus | Sc Restoration Plus | — | (805) 796 6327 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| Scandia Designs & Building | Scandia Designs & Building | — | (818) 434 9416 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Scarlett's Landscape INC | Thomas William Scarlett | — | (805) 642 3002 | Windows, patio, painters | Ventura · Ventura County | — | — |
| Scc Squire Construction Corporation | Dirk Anthony Squire | — | (805) 445 9920 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Scceswest INC | Douglas Paul Lydick | — | (805) 707 3456 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Scenic Landscape | Juan Manuel Morales | — | (805) 612 2014 | Windows, patio, painters | Oxnard · Ventura County | — | — |
| Schaefer Electric | Raymond Scott Schaefer | — | (805) 984 9400 | Electricians | Oxnard · Ventura County | — | — |
| Schaub Construction INC | David Randall Schaub | — | (805) 373 1909 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Schaub Pacific Group INC | Bradley Alan Schaub | — | (805) 377 4835 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| Schaub Renovations INC | David Andrew Schaub | david@schaubrenovations.com | (805) 279 8132 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| Schebler Construction INC | Charles Joseph Schebler | — | (805) 377 1028 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| Schmitt D C Construction INC | Dixon Casey Schmitt | casey@sdccon.com | (805) 665 8725 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Schneider Construction Group INC | Christian Lemus | — | (805) 861 8649 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| Schwarz Construction & Development INC | Bryan Dean Schwarz | — | (805) 501 5263 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Schyler Douglas Construction | Schyler Alexander Douglas | — | (805) 259 9805 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Sci Design + Build INC | Steven Ray Ireland | — | (805) 405 1073 | GC, remodel, ADU | Newbury Park · Ventura County | — | — |
| Scofield Intergration | Scofield Intergration | — | (310) 386 9896 | Other | Camarillo · Ventura County | — | — |