| L P Pool Service And Repair | Louis Leonard Papera | — | (805) 499 5105 | Pool | Newbury Park · Ventura County | — | — |
| L&o Heating & Air Conditioning | Andy Ramiro Contreras | — | (805) 527 9912 | HVAC | Simi Valley · Ventura County | — | — |
| L&s Plastering LLC | Ricardo Vidal Lopez Estrada | anapbm@gmail.com | (805) 607 6458 | Other | Oxnard · Ventura County | — | — |
| La Aldea Construction INC | Fernando Contreras Buzo | la.aldea.fc@gmail.com | (805) 701 7863 | GC, remodel, ADU | Santa Paula · Ventura County | — | — |
| La Casse Construction And Development | Kraig Leo La Casse | — | (805) 906 0001 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| La Cumbre Construction | Hernandez Matthew | — | (805) 758 9660 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| La Cumbre Floor Covering & Design | Solis Tonatiuh Zapotecas | — | (805) 698 9745 | Other | Ventura · Ventura County | — | — |
| La Fontaine Construction | Ronald Paul La Fontaine | — | (805) 433 3492 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| La Porta & Spragg | Graham Peter Spragg | — | (805) 390 6491 | Windows, patio, painters | Thousand Oaks · Ventura County | — | — |
| La Sewer Repair | Michael Ryan Burpee | — | (818) 317 2130 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Labarre Land & Development | Labarre Land & Development | — | (805) 798 0157 | GC, remodel, ADU | Ojai · Ventura County | — | — |
| Laco Floor Covering Company | Valdez Patricia | — | (805) 483 3018 | Other | Oxnard · Ventura County | — | — |
| Lacy Electric | John Wallace Lacy | — | (805) 402 2820 | Electricians | Thousand Oaks · Ventura County | — | — |
| Laguna Painting Sb INC | Jorge Pelcastre | — | (805) 824 3076 | Windows, patio, painters | Oxnard · Ventura County | — | — |
| Lakeview Contracting | John Charles Dermigny | — | (805) 656 3911 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Lambert Electric | Brian Thomas Lambert | — | (323) 309 8593 | Electricians | Ventura · Ventura County | — | — |
| Lambert Electric | Todd Michael Lambert | — | (805) 680 1089 | Electricians | Oak View · Ventura County | — | — |
| Lampert Construction INC | Mitchell David Lampert | — | (805) 469 1205 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Lance Construction | Lance Wayne Ryerson | — | (818) 903 0902 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Lance Darren Milatz Plumbing | Lance Darren Milatz Plumbing | — | (818) 445 7890 | Other | Simi Valley · Ventura County | — | — |
| Lance Todd Construction INC | Lance Cordell Todd | — | (661) 803 4735 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Landart Landscaping | Marcail Paige Romero | — | (805) 215 1000 | Windows, patio, painters | Westlake Village · Ventura County | — | — |
| Landaverde's Painting INC | Josue Fredy Landaverde | eben@eyebytes.com | (818) 304 1562 | Windows, patio, painters | Simi Valley · Ventura County | — | — |
| Landeen Heating And Air Conditioning | Landeen Heating And Air Conditioning | — | (805) 522 8848 | HVAC | Simi Valley · Ventura County | — | — |
| Landmark Construction | Mark Edward Brown | — | (805) 732 3517 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Landmark Landscape Co | Pelayo Pedro | — | (805) 304 3060 | Windows, patio, painters | Simi Valley · Ventura County | — | — |
| Landscape Masters INC | Gregary Haver Harte | — | (818) 441 2211 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| Landscape Solutions By Patrick F Santamauro | Patrick Francis Santomauro | — | (818) 398 3757 | Windows, patio, painters | Ventura · Ventura County | — | — |
| Landscape West Enterprises | George Scott Hopkins | — | (818) 968 7942 | Windows, patio, painters | Simi Valley · Ventura County | — | — |
| Landscapes By Jeffery INC | Jeffery Scott Tobias | — | (818) 597 2438 | Windows, patio, painters | Thousand Oaks · Ventura County | — | — |
| Lane Redman Concrete | Lane Redman Concrete | — | (805) 207 0101 | Other | Camarillo · Ventura County | — | — |
| Lang Construction Company INC | Robert George Lang | — | (818) 991 4946 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| Langhans Masonry | Langhans Masonry | — | (805) 493 0140 | Other | Thousand Oaks · Ventura County | — | — |
| Langkilde's Fire Protection | Langkilde's Fire Protection | — | (805) 895 9838 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Langkilde's Fire Protection INC | Nia Caroline Langkilde | — | (805) 895 9838 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Langley Plumbing INC | Brandon Michael Langley | langleyplumbing@rogers.com | (818) 970 7993 | Other | Camarillo · Ventura County | — | — |
| Lapham's Painting | Lapham's Painting | — | (805) 504 6259 | Windows, patio, painters | Camarillo · Ventura County | — | — |
| Lara Construction | Isaac Abraham Lara Ramirez | — | (805) 946 6465 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Larry B Jones | Larry B Jones | — | (818) 437 5629 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Larry Benson Construction INC | Larry Randolph Benson | — | (805) 630 2192 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |