| S P Plastering INC | Gilberto Gutierrez | — | (805) 509 3141 | Other | Oxnard · Ventura County | — | — |
| S P Plumbing & Heating LLC | James Damian Castillo | — | (805) 754 5127 | HVAC | Oxnard · Ventura County | — | — |
| S R Consulting | S R Consulting | — | (818) 482 9779 | Pool | Simi Valley · Ventura County | — | — |
| S R M Construction | Scott Robert Milles | — | (805) 807 5221 | GC, remodel, ADU | Port Hueneme · Ventura County | — | — |
| S R Viescas INC DBA Stuart Rose Htg & A C | S. Robert Viescas | — | (818) 991 0757 | HVAC | Moorpark · Ventura County | — | — |
| S Soria Tree Service | Salvador Soria Argueta | — | (805) 218 2697 | Other | Ojai · Ventura County | — | — |
| S T S Kraftworks INC | Skipper T Smith | info@stskraftworks.com | (209) 352 0860 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| S V Heating And Air Conditioning | Robert Richard Johnston | — | (805) 217 0146 | HVAC | Simi Valley · Ventura County | — | — |
| S W Banta Tile | S W Banta Tile | — | (805) 312 0289 | Other | Camarillo · Ventura County | — | — |
| S&j Contracting & Development LLC | Thomas Justin Harmon | — | (818) 963 0030 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| S&pcrew LLC | Stuart Arthur Krock | — | (805) 490 0133 | Other | Newbury Park · Ventura County | — | — |
| S2n Construction | Ethan Daniel Borman | — | (310) 633 4526 | GC, remodel, ADU | Newbury Park · Ventura County | — | — |
| Safari Glassworks INC | Robert Daniel Cortez | — | (805) 558 6780 | Windows, patio, painters | Thousand Oaks · Ventura County | — | — |
| Safe & Beautiful Tree Company INC | Gabriel Herrera Astorga | — | (805) 526 8733 | Tree | Simi Valley · Ventura County | — | — |
| Safe Living INC | Uri Ekshtein | — | (818) 821 8228 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Safetech Communications INC | Dotan Gali | — | (818) 722 1188 | Other | Camarillo · Ventura County | — | — |
| Safeway Construction LLC | Adeeb Adam Barakat | — | (805) 222 6544 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| Sage Painting Company | Gary Leslie Sage | — | (805) 212 9449 | Windows, patio, painters | Ventura · Ventura County | — | — |
| Sahara Tile And Stone DBA Sahara Tile And Stone Slabs | Michael Hyla Elkington | — | (818) 292 7090 | Other | Newbury Park · Ventura County | — | — |
| Saicon Builders INC | Jesus Maria Vargas | — | (805) 500 6845 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Sal Finish Carpentry INC | Ramos Salvador Flores | — | (805) 409 6571 | Other | Thousand Oaks · Ventura County | — | — |
| Sal Squeo | Sal Squeo | — | (818) 517 4599 | Other | Thousand Oaks · Ventura County | — | — |
| Salais Framing | Salais Framing | — | (805) 625 3491 | Other | Santa Paula · Ventura County | — | — |
| Salas & Sons Excavating | Manuel Deharo Salas | — | (805) 529 8154 | Other | Moorpark · Ventura County | — | — |
| Salas Excavating | Salas Excavating | salasexcavating@gmail.com | (805) 217 3863 | Other | Simi Valley · Ventura County | — | — |
| Salazar Legacy Construction INC | Lopez Salazar Juan | — | (805) 236 2305 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Saldana Construction Renovations And Repairs | Nicholas James Herrera Saldana | — | (805) 460 7412 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Salgado Sheet Metal Works | Salgado Sheet Metal Works | — | (805) 791 0048 | Other | Simi Valley · Ventura County | — | — |
| Salinas & Sons Rooter Service INC | Alfonso Rene Salinas | — | (805) 486 7030 | Other | Oxnard · Ventura County | — | — |
| Salinas Tree Service | Salinas Atanasio | — | (805) 377 4689 | Tree | Camarillo · Ventura County | — | — |
| Salsabil Construction INC | Mohamed Reda Hafid | — | (818) 770 0042 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Salstrom Construction | Ander Phillip Salstrom | — | (805) 807 7775 | GC, remodel, ADU | Newbury Park · Ventura County | — | — |
| Sam - Son Acoustics INC | Charles Robert Jr Gilbert | — | (805) 386 1777 | Other | Somis · Ventura County | — | — |
| Sam Hill & Sons INC | Spencer Thomas Hill | — | (805) 644 6278 | Other | Ventura · Ventura County | — | — |
| Sam Houseman Construction INC | Sam James Houseman | — | (805) 207 1244 | GC, remodel, ADU | Ojai · Ventura County | — | — |
| Sam I Am Unlimited | Sam I Am Unlimited | — | (805) 402 9112 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Same Day Water Heater And Plumbing INC | Tanner Dylan Reed | — | (805) 844 8244 | Other | Santa Paula · Ventura County | — | — |
| Sampson Construction INC | Donald Russel Sampson | interested@domainmarket.com | (805) 341 8645 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Samsons Concrete Incorporated | Matias Sammy Gonzales | — | (805) 527 0622 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Samuel Smithson | Samuel Smithson | me@samuelsmithson.com | (805) 207 1549 | GC, remodel, ADU | Ventura · Ventura County | — | — |