| Stanley Plumbing LLC | Matthew Alan Stanley | contact@stanley-plumbing.com | (707) 954 9921 | Other | Smith River · Del Norte County | — | — |
| Stark Brothers INC | Lowell Kerry Stark | info@starkbros.com | (775) 240 0431 | GC, remodel, ADU | Smith River · Del Norte County | — | — |
| Steven Lucero & Company | Steven Dennis Lucero | — | (707) 464 7840 | Other | Crescent City · Del Norte County | — | — |
| Stone Roofing & Roof Gutters INC | Brett Allman Stone | — | (707) 465 6024 | Other roofers | Crescent City · Del Norte County | — | — |
| Swede Company | Swede Sean | — | (707) 218 1158 | Electricians | Crescent City · Del Norte County | — | — |
| T - N - T Tile | Barry Eugene Jones | — | (707) 218 1901 | Other | Crescent City · Del Norte County | — | — |
| T A Dailey Construction | Troy Adam Dailey | — | (619) 674 3060 | GC, remodel, ADU | Crescent City · Del Norte County | — | — |
| T R Carr Construction Company | Thomas Richard Carr | — | (619) 606 6046 | GC, remodel, ADU | Crescent City · Del Norte County | — | — |
| Thomco | Bruce Blake Thompson | odunn@thomco.com | (707) 218 7827 | GC, remodel, ADU | Crescent City · Del Norte County | — | — |
| Tim Haban Construction INC | Timothy Joseph Haban | — | (707) 464 7686 | GC, remodel, ADU | Crescent City · Del Norte County | — | — |
| Triskell Restorations INC | Triskell Restorations INC | — | (800) 505-3849 | Restoration | Vista · Del Norte County | — | — |
| Vanpelt Construction | Jeffrey Alan Vanpelt | — | (707) 954 6537 | GC, remodel, ADU | Crescent City · Del Norte County | — | — |
| Verlyn Royal Benson | Verlyn Royal Benson | — | (269) 208 2287 | Other | Crescent City · Del Norte County | — | — |
| Veteran Painting | Veteran Painting | — | (707) 954 9604 | Windows, patio, painters | Smith River · Del Norte County | — | — |
| Welton Quality Construction INC | Bryan Mitchel Welton | — | (707) 954 8399 | GC, remodel, ADU | Crescent City · Del Norte County | — | — |
| West Coast Floors | West Coast Floors | — | (707) 464 1199 | Other | Crescent City · Del Norte County | — | — |
| Wild Rivers Co | James Stuart Segna | — | (707) 951 0982 | GC, remodel, ADU | Gasquet · Del Norte County | — | — |
| William Marshall Jones | William Marshall Jones | — | (707) 951 3455 | GC, remodel, ADU | Crescent City · Del Norte County | — | — |
| Williams Repair And Construction | Michael James Williams | — | (707) 951 8438 | GC, remodel, ADU | Smith River · Del Norte County | — | — |
| Wisecup Electrical | Mark David Wisecup | — | (707) 280 7432 | Electricians | Crescent City · Del Norte County | — | — |
| Wnc General Contractors | Wnc General Contractors | — | (760) 635-9073 | GC, remodel, ADU | Carlsbad · Del Norte County | — | — |
| Woods Plumbing INC | Ricardo Martin De Solenni | — | (707) 464 3789 | Other | Crescent City · Del Norte County | — | — |