| Legit Mitigation Emergency Services INC | Guadalupe Esparza | — | (714) 450 5345 | Other | Riverside · Riverside County | — | — |
| Lehman Roofing INC | Carla Susan Lehman | — | (760) 238 4867 | Other roofers | La Quinta · Riverside County | — | — |
| Lehmann & Sons Plastering | Lehmann & Sons Plastering | — | (714) 206 0488 | Other | Corona · Riverside County | — | — |
| Lei-dal Concrete INC | Carrillo Cristina Palacios | — | (442) 234 4352 | Other | Indio · Riverside County | — | — |
| Leivas INC DBA Leivas Lighting | Randy Paul Leivas | — | (951) 686 4046 | Electricians | Riverside · Riverside County | — | — |
| Leland T Cormell Jr | Leland T Cormell Jr | — | (760) 922 5330 | HVAC | Blythe · Riverside County | — | — |
| Lemont Construction | Christopher Lemont Richardson | — | (909) 851 5293 | GC, remodel, ADU | Menifee · Riverside County | — | — |
| Lengendary Landscaping | Lengendary Landscaping | — | (714) 420 1830 | Windows, patio, painters | Riverside · Riverside County | — | — |
| Lennan Landscaping INC | Paul William Lennan | — | (619) 708 1153 | Windows, patio, painters | Palm Desert · Riverside County | — | — |
| Lenny Dobbins Masonry | Lenny Dobbins Masonry | — | (760) 567 7540 | Other | Palm Desert · Riverside County | — | — |
| Leo Hernandez | Leo Hernandez | — | (951) 331 9817 | Windows, patio, painters | Temecula · Riverside County | — | — |
| Leo's Mirror & Glass INC | Cynthia Gail Wilson | — | (760) 568 9909 | Windows, patio, painters | Rancho Mirage · Riverside County | — | — |
| Leo's Tile | Leo's Tile | — | (951) 478 2564 | Other | Moreno Valley · Riverside County | — | — |
| Leo's Tree Service | Leonel Mardonio Mancilla Serrano | — | (714) 244 9750 | Tree | Perris · Riverside County | — | — |
| Leon Electric INC | Diego Guillermo Leon | info@leonelectric.com | (951) 902 8493 | Electricians | Perris · Riverside County | — | — |
| Leon K Miller Roofing | Leon Keith Miller | — | (951) 973 4361 | Other roofers | Menifee · Riverside County | — | — |
| Leon Masonry | Hector Ignacio Leon-Jauregui | — | (951) 409 2432 | Other | Riverside · Riverside County | — | — |
| Leon's Landscapes INC | Irma Leon | — | (760) 863 1884 | Windows, patio, painters | Indio · Riverside County | — | — |
| Leonard And Son | Leonard Jr Loera | — | (760) 343 3346 | Other | Thousand Palms · Riverside County | — | — |
| Leonard Pantoja Construction | Leonard John Pantoja | — | (951) 285 1640 | GC, remodel, ADU | Lake Elsinore · Riverside County | — | — |
| Leonard Roofing INC | Scott Allen Beecham | — | (951) 506 3811 | Other roofers | Temecula · Riverside County | — | — |
| Leos Framing | Leos Framing | — | (714) 356 1387 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Leosplumbing24seven | Leonard Nicholas Martinez | — | (951) 437 3893 | Other | Murrieta · Riverside County | — | — |
| Lerma Plumbing INC | Michael Anthony Lerma | — | (760) 899 5410 | Other | La Quinta · Riverside County | — | — |
| Leroy Vasquez Sandblasting | Leroy Vasquez Sandblasting | leroyvasquezsandblasting@gmail.com | (951) 903-8127 | Windows, patio, painters | Mira Loma · Riverside County | — | — |
| Leslie Gunner Campbell Construction | Leslie Gunner Campbell | — | (760) 905 0043 | Electricians | Canyon Lake · Riverside County | — | — |
| Lester De Leon | Lester De Leon | — | (213) 923 0147 | Other | Riverside · Riverside County | — | — |
| Lestra Landscaping INC | Leonardo Estrada | — | (951) 774 3067 | Windows, patio, painters | Riverside · Riverside County | — | — |
| Lets Do It Fence | Gomez Antonio Orozco | — | (951) 623 5384 | Other | Hemet · Riverside County | — | — |
| Letuli INC DBA Garage Door Perfection And Tree Services | Tafu Joseph Letuli | — | (760) 586 3647 | Other | Temecula · Riverside County | — | — |
| Level 2 Plumbing | Level 2 Plumbing | — | (951) 448 6852 | Other | Perris · Riverside County | — | — |
| Level 5 Drywall | Level 5 Drywall | — | (909) 900 0931 | Other | Sun City · Riverside County | — | — |
| Level 5 Drywall | Level 5 Drywall | — | (760) 997 3655 | Other | Thermal · Riverside County | — | — |
| Level 7 Design & Build INC | Gregory Scott Young | — | (323) 828 9657 | GC, remodel, ADU | Palm Springs · Riverside County | — | — |
| Level Construction | Marcio Fernando Sarancha | — | (951) 333 0180 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Level Line Concrete Corp | Victor Martin Diaz Rojas | — | (951) 570 4024 | Windows, patio, painters | Perris · Riverside County | — | — |
| Level Up Construction Services INC | John Roger Rogers | — | (760) 902 4371 | GC, remodel, ADU | Palm Desert · Riverside County | — | — |
| Level Up Contracting INC | Abdulsalam Alwani | — | (708) 328 9564 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Level Up Doors INC DBA Level Up Doors & Woodwork | Christian Joel Doering | — | (909) 520 3022 | Other | Menifee · Riverside County | — | — |
| Levi & Co | Levi Flores Gallegos | — | (760) 408 1652 | GC, remodel, ADU | Palm Desert · Riverside County | — | — |