| Lindy Roofing Company INC | Clayton James Whitaker | — | (408) 286 9990 | Other roofers | San Jose · Santa Clara County | — | — |
| Line Construction LLC | Chung Yul Lee | — | (415) 845 5898 | GC, remodel, ADU | Palo Alto · Santa Clara County | — | — |
| Line Fire Protection | Mohammad Salek | — | (415) 426 0145 | Other | San Jose · Santa Clara County | — | — |
| Linear Tech Striping | Linear Tech Striping | lineartechstriping@sbcglobal.net | (408) 924 0203 | Other | San Jose · Santa Clara County | — | — |
| Link - On Communications | Link - On Communications | — | (408) 702 4394 | Other | Sunnyvale · Santa Clara County | — | — |
| Link Corporation | Richard Arthor Myles | — | (408) 647 2126 | Electricians | Palo Alto · Santa Clara County | — | — |
| Lion Electric Co | Hamid Reza Hozhabry | — | (408) 242 6769 | Electricians | San Jose · Santa Clara County | — | — |
| Lionstone Construction INC DBA Lionstone Mechanical Company | Matthew Joseph Loewenstein | — | (408) 203 2777 | HVAC | Morgan Hill · Santa Clara County | — | — |
| Liquid Gardens INC | Marco Albert Tjaden | sales@liquid-gardens.com | (408) 252 1500 | Windows, patio, painters | Saratoga · Santa Clara County | — | — |
| Lisac Construction INC | William George Jr Lisac | — | (408) 355 4238 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Lisac General Engineering | Marko William Lisac | — | (510) 760 9781 | GC, remodel, ADU | Campbell · Santa Clara County | — | — |
| Lisalde Construction INC | Moreno Maria Carolina Miranda | — | (408) 724 0210 | GC, remodel, ADU | Cupertino · Santa Clara County | — | — |
| Lito's Marble & Granite INC | Jose Zacarias Viveros | — | (408) 277 0671 | Other | San Jose · Santa Clara County | — | — |
| Little Brothers Construction Incorporated | Jeffrey Allen Little | — | (408) 234 2056 | GC, remodel, ADU | Gilroy · Santa Clara County | — | — |
| Liu Cheng | Liu Cheng | — | (408) 406 8631 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Liu Handyman Plumbing | Liu Handyman Plumbing | — | (650) 404 6672 | Other | Mountain View · Santa Clara County | — | — |
| Liu's Construction | Liu Zhongri | ray@liusconstruction.com | (408) 966 3782 | Electricians | San Jose · Santa Clara County | — | — |
| Liu's Construction INC | Zhongri Liu | ray@liusconstruction.com | (408) 966 3782 | Electricians | San Jose · Santa Clara County | — | — |
| Liu's Residential Construction | Liu Geteng | — | (408) 205 0788 | GC, remodel, ADU | Palo Alto · Santa Clara County | — | — |
| Live Oak Concrete | Live Oak Concrete | — | (408) 910 7702 | Other | San Jose · Santa Clara County | — | — |
| Live Oak Landscape INC | Alejandro Luis Clancy | — | (408) 316 6917 | Windows, patio, painters | Los Gatos · Santa Clara County | — | — |
| Live Play Silicon Valley Construction INC | Christopher Alan Alston | — | (408) 921 4711 | GC, remodel, ADU | Campbell · Santa Clara County | — | — |
| Livelarge Build INC | Joseph Jinheng Mak | — | (669) 230 1579 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Livewire Electric Services INC | Michael Pinheiro Lima | — | (408) 515 1559 | Electricians | San Jose · Santa Clara County | — | — |
| Living Well Landscape | Django Reinhardt Dawson | — | (831) 227 0574 | Windows, patio, painters | Los Gatos · Santa Clara County | — | — |
| Livio Building Systems INC | Navneet Aron | — | (650) 380 0644 | GC, remodel, ADU | Los Altos · Santa Clara County | — | — |
| Lj Roth Company | Leonard William Iii Roth | — | (408) 858 2802 | Other | San Jose · Santa Clara County | — | — |
| Ljr Tree Services INC | Luis Alberto Castaneda Pelayo | — | (408) 712 4823 | Tree | San Jose · Santa Clara County | — | — |
| Ljungquist Painting | Ljungquist Painting | — | (650) 279 6154 | Windows, patio, painters | Sunnyvale · Santa Clara County | — | — |
| Lkj Construction INC | Lam Thien Luong | — | (408) 326 9987 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Ll Heating And Air Conditioning | Liem Quang Le | — | (408) 644 0723 | HVAC | San Jose · Santa Clara County | — | — |
| Llb Construction INC | Barragan Noe Loya | — | (408) 483 8621 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Llz Builders INC | Zamora Leonardo Lopez | — | (408) 770 0477 | GC, remodel, ADU | Milpitas · Santa Clara County | — | — |
| Lmb Construction | Michael Nguyen | — | (408) 386 3052 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Lmc Construction | Luis Manuel Chavez Navarro | — | (831) 240 7802 | GC, remodel, ADU | Gilroy · Santa Clara County | — | — |
| Lmq Construction INC | Guoyi Li | — | (408) 627 5437 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Loayza's Landscaping Pools & Spas INC | Edmundo Miguel Loayza | — | (408) 297 5555 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Local Rooter | Local Rooter | — | (408) 239 6011 | Other | San Jose · Santa Clara County | — | — |
| Local Rooter Corp | Duy Chau Nguyen | — | (650) 609 8276 | Other | San Jose · Santa Clara County | — | — |
| Local Water Heaters And Plumbing | Local Water Heaters And Plumbing | — | (408) 921 5373 | Other | Santa Clara · Santa Clara County | — | — |