| Lorentson Custom Builders LLC | Lee Edward Lorentson | — | (805) 341 7237 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Lorenzana Construction INC | Ruben Lawrence Lorenzana | ruben@lorenzanaconstruction.com | (805) 732 9733 | GC, remodel, ADU | Port Hueneme · Ventura County | — | — |
| Los Angeles Cascade Technology Group INC | Farzin Javaherian | — | (818) 788 2901 | HVAC | Simi Valley · Ventura County | — | — |
| Los Olivos Landscape Construction | Armando Ramos | — | (805) 561 3200 | Windows, patio, painters | Oxnard · Ventura County | — | — |
| Los Padres Plastering LLC | Garcia Jaime Martinez | info@lospadresplastering.com | (805) 873 3103 | Other | Santa Paula · Ventura County | — | — |
| Lossan Construction | Carlos S Sanchez | — | (805) 738 3306 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Lotus Floor & Home | Neel Vittal Patil | — | (818) 407 0322 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| Lou Ivaylo Modern Marble INC | Linda Marie Branchev | — | (805) 988 1122 | Other | Oxnard · Ventura County | — | — |
| Louis Hernandez Construction INC | Louis Salvador Hernandez | — | (805) 319 5587 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Lovell Enterprises | Erik James Lovell | — | (805) 558 0076 | Electricians | Santa Paula · Ventura County | — | — |
| Loverso Electric | Nicholas James Loverso | — | (805) 390 7409 | Electricians | Simi Valley · Ventura County | — | — |
| Low Voltage Solutions INC | James Nicholas Borrelli | — | (805) 850 5412 | Electricians | Ventura · Ventura County | — | — |
| Lowman Electric INC | Marc Wayne Lowman | — | (805) 492 4446 | Electricians | Thousand Oaks · Ventura County | — | — |
| Lowrey Construction Co | James Frederic Lowrey | — | (818) 381 1001 | GC, remodel, ADU | Fillmore · Ventura County | — | — |
| Loyal Plumbing & Drains INC | Eric Rafael Figueroa | — | (805) 625 4182 | Other | Ojai · Ventura County | — | — |
| Loyd Tonsing Masonry | Loyd Tonsing Masonry | — | (805) 746 7101 | Other | Oxnard · Ventura County | — | — |
| Lozano's General Contractor | Lozano's General Contractor | — | (805) 529 5988 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| Ltr Concrete | Luis Manuel Torres | — | (747) 228 3116 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Lucchese Construction & Custom Hood Installations | David Joseph Lucchese | — | (805) 432 5286 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Lucio Romero INC | Lucio E Romero | — | (805) 795 2275 | Other | Simi Valley · Ventura County | — | — |
| Ludlow Contracting INC | Raymond Eugene Robinson | — | (805) 375 2753 | Other | Thousand Oaks · Ventura County | — | — |
| Luis Adan Rivera Rodriguez | Luis Adan Rivera Rodriguez | — | (805) 397 0625 | Windows, patio, painters | Santa Paula · Ventura County | — | — |
| Luis Huerta INC | Luis Huerta Hernandez | — | (805) 331 3808 | Other | Ventura · Ventura County | — | — |
| Luis J Saucedo | Luis J Saucedo | — | (805) 320 6478 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Luis M Ochoa_dba Lo Landscaping | Luis M Ochoa_dba Lo Landscaping | — | (805) 890 0514 | Windows, patio, painters | Port Hueneme · Ventura County | — | — |
| Luis Olivo | Luis Olivo | — | (805) 732 9749 | Other | Thousand Oaks · Ventura County | — | — |
| Luke Yeron | Luke Yeron | — | (213) 909 6287 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Lumenkind Lighting LLC | Grey Vincent Long | contact@lumenkindlighting.com | (805) 813-8644 | Other | Simi Valley · Ventura County | — | — |
| Luna Element Heating & Air INC | Agustin Jared Luna | — | (805) 390 4095 | HVAC | Simi Valley · Ventura County | — | — |
| Luna Landscaping Corp | Isaac Luna | — | (818) 510 6351 | Windows, patio, painters | Simi Valley · Ventura County | — | — |
| Luna Metal Concepts INC | Luna Jesus | — | (805) 797 6848 | Other | Camarillo · Ventura County | — | — |
| Luna Tile And Stone | Luna Tile And Stone | — | (805) 844 4329 | Other | Ventura · Ventura County | — | — |
| Lundgren Construction | Alan Wayne Lundgren | — | (805) 490 1828 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Luroga | Luis Garcia Rodriguez | luis@luroga.com | (805) 415 0720 | Electricians | Oxnard · Ventura County | — | — |
| Lux Custom Homes LLC | Shaun Michael Coyle | — | (805) 225 3108 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Luxury Development Contracting | Gregory Alan Westerfield | — | (310) 345 5388 | Electricians | Ventura · Ventura County | — | — |
| Luxury Development Contracting INC | Gregory Alan Westerfield | — | (310) 345 5388 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Lv Custom Color Matching INC | Sanchez Lucio Vazquez | — | (805) 861 3410 | Windows, patio, painters | Ojai · Ventura County | — | — |
| Lv Plumbing LLC | Brian Thai Vinh | — | (818) 282 5003 | Other | Simi Valley · Ventura County | — | — |
| Lv Technologies | Lv Technologies | steve@lvtechnologies.com | (888) 387 0028 | Other | Simi Valley · Ventura County | — | — |