| L&g All Around Landscape | Luis Aurelio Vaca Bueno | — | (805) 294 4735 | Windows, patio, painters | Lompoc · Santa Barbara County | — | — |
| La Bodega Woodworks | La Bodega Woodworks | — | (805) 679 1537 | Other | Santa Barbara · Santa Barbara County | — | — |
| La Cumbre Cabinets And Millwork | John Andrew Rogan | — | (805) 450 9372 | Other | Santa Barbara · Santa Barbara County | — | — |
| La Riviera Construction | Arroyo Rogelio Vazquez | larivieraconstruction@gmail.com | (805) 284 8574 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| La Rossa Landscape INC | Gianni James Larossa | — | (805) 895 9818 | Windows, patio, painters | Santa Barbara · Santa Barbara County | — | — |
| Ladouce Electric | Timothy James Ladouce | — | (805) 895 1663 | Electricians | Santa Barbara · Santa Barbara County | — | — |
| Lafaurie Construction | Michael Warren Lafaurie | — | (805) 448 8326 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| Lahud Craftsmen INC | Joseph Emilio Lahud | — | (805) 570 5192 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| Land Tech Landscaping Services | Abelardo Trujillo Landeros | — | (805) 403 5303 | Windows, patio, painters | Santa Barbara · Santa Barbara County | — | — |
| Landers Roofing Co | Jeffrey Ray Landers | — | (805) 922 1800 | Other roofers | Santa Maria · Santa Barbara County | — | — |
| Landlorde | Steven Jacob Domines | hello@landlorde.com | (805) 618 4547 | Windows, patio, painters | Santa Barbara · Santa Barbara County | — | — |
| Landscape Creators INC | Eduardo Rodriguez | — | (805) 617 6683 | Windows, patio, painters | Carpinteria · Santa Barbara County | — | — |
| Landscapes By Davids | David Mark Niles | — | (805) 963 9335 | Windows, patio, painters | Santa Barbara · Santa Barbara County | — | — |
| Lara's Construction | Felipe Dejesus Lara Jimenez | — | (805) 617 6094 | GC, remodel, ADU | Solvang · Santa Barbara County | — | — |
| Larrabee Painting Co | Andrea Christine Larrabee | — | (805) 455 3650 | Windows, patio, painters | Santa Ynez · Santa Barbara County | — | — |
| Larralde Construction | Stephen John Larralde | — | (805) 698 8618 | GC, remodel, ADU | Goleta · Santa Barbara County | — | — |
| Larry Anderson's Hardwood Flooring | Larry Anderson's Hardwood Flooring | — | (805) 458 3156 | Other | Santa Maria · Santa Barbara County | — | — |
| Larry Greco Welding | Larry Greco Welding | — | (805) 680 4046 | Other | Santa Maria · Santa Barbara County | — | — |
| Larry's Plumbing INC | Jose Rodolfo Mendoza | — | (805) 268 9031 | Other | Santa Maria · Santa Barbara County | — | — |
| Lars Amundsen INC | Lars Erik Amundsen | — | (805) 452 6306 | GC, remodel, ADU | Goleta · Santa Barbara County | — | — |
| Larsen - Baez INC | Baez Juan | — | (805) 351 9108 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| Larsen Fine Homes | Larsen Fine Homes | — | (805) 490 1444 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| Las Palmas Landscape | Las Palmas Landscape | laspalmaslandscape@yahoo.com | (805) 895 1966 | Windows, patio, painters | Santa Barbara · Santa Barbara County | — | — |
| Lash Construction INC | Arthur Raymond Lash | — | (805) 963 3553 | Other | Santa Barbara · Santa Barbara County | — | — |
| Latino's Plumbing | Farfan Mario Moron | — | (805) 478 5231 | Other | Santa Maria · Santa Barbara County | — | — |
| Laughlin Audio Video Electric INC | Robert Llewelyn Jr Laughlin | — | (805) 590 2222 | Electricians | Santa Ynez · Santa Barbara County | — | — |
| Laughlin Electric | Laughlin Electric | — | (805) 387-9408 | Electricians | Santa Barbara · Santa Barbara County | — | — |
| Laurel Plumbing Company LLC | Jesus Eduardo Jr Laurel | — | (805) 868 6501 | Other | Orcutt · Santa Barbara County | — | — |
| Lav Arts & Finish Carpentry | Lav Arts & Finish Carpentry | — | (805) 452 3954 | Other | Santa Barbara · Santa Barbara County | — | — |
| Lawrence Ramos Construction | Lawrence Edward Ramos | — | (805) 698 8364 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| Lawrence Ramstrum Construction | Ramstrum Lawrence | larryram@silcom.com | (805) 331-8100 | HVAC | Carpinteria · Santa Barbara County | — | — |
| Lawson Landscape Services INC | Joseph Edward Garges | — | (805) 363 3081 | Windows, patio, painters | Santa Maria · Santa Barbara County | — | — |
| Layton Paul Reneer | Layton Paul Reneer | — | (805) 259 8984 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| Laz Painting INC | Hernandez Lazaro Pena | — | (805) 252 8459 | Windows, patio, painters | Santa Barbara · Santa Barbara County | — | — |
| Lc Flooring | Leanna Nicole Corral | — | (805) 588 9844 | Other | Lompoc · Santa Barbara County | — | — |
| Lc Mora's Flooring INC | William Robert Mora | — | (805) 588 4919 | Other | Lompoc · Santa Barbara County | — | — |
| Le Sol Landscape Design Studio | Le Sol Landscape Design Studio | — | (818) 497 3444 | Windows, patio, painters | Santa Barbara · Santa Barbara County | — | — |
| Leafstone Landscape | Maceda Eli Camacho | — | (805) 623 6232 | Windows, patio, painters | Santa Maria · Santa Barbara County | — | — |
| Lee & Sons Plumbing And Heating INC | Conan Ulric-Teague Horton | — | (805) 965 9586 | HVAC | Santa Barbara · Santa Barbara County | — | — |
| Lee Beebe Construction INC | Gregory Lee Beebe | — | (805) 680 3680 | GC, remodel, ADU | Santa Maria · Santa Barbara County | — | — |