| Js Construction INC | Joshua Ethan Sharon | — | (858) 599 3020 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Js Rebar | Cuevas Anaya Javier | jsrebar19@gmail.com | (408) 849 3680 | Other | San Jose · Santa Clara County | — | — |
| Js Tile | Js Tile | — | (408) 516 7344 | Other | San Jose · Santa Clara County | — | — |
| Jsj Refrigeration LLC | Jose Manuel Castillo | — | (408) 775 5130 | HVAC | Gilroy · Santa Clara County | — | — |
| Jsm Construction | Soriano Mendoza Jaime | — | (650) 669 3364 | GC, remodel, ADU | Los Altos · Santa Clara County | — | — |
| Jso Tree Service | Juan Jr Olguin | — | (408) 857 3018 | Windows, patio, painters | Gilroy · Santa Clara County | — | — |
| Jt Construction Services INC | Joseph Minh Tran | — | (408) 234 4340 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Jt Handyman Service | Pochieh Tseng | — | (669) 225 8425 | Electricians | San Jose · Santa Clara County | — | — |
| Jtc Construction | John Quoc Tran | — | (408) 892 1810 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| Jtel Communications | Jtel Communications | — | (408) 239 3916 | Other | San Jose · Santa Clara County | — | — |
| Jth Construction | Jeff Holderfield | — | (408) 722 0916 | GC, remodel, ADU | Morgan Hill · Santa Clara County | — | — |
| Jtk Builders INC | Hanna Vu | — | (408) 426 1682 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Jtm Landscaping INC | Margarito J Valdovinos | — | (650) 649 9311 | Windows, patio, painters | East Palo Alto · Santa Clara County | — | — |
| Jtv Construction Corp | Michael Lai Duy Phi | — | (408) 893 7215 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Juan Carlos Cruz DBA Premier Heating And Cooling | Premier Heating And Cooling | — | (408) 561 6447 | HVAC | San Jose · Santa Clara County | — | — |
| Juan Cruz DBA Becks Heating & Air Conditioning | Becks Heating & Air Conditioning | — | (408) 358 2172 | HVAC | Los Gatos · Santa Clara County | — | — |
| Juan Rodriguez Landscape | Juan Rodriguez Landscape | — | (650) 669 5852 | Windows, patio, painters | E Palo Alto · Santa Clara County | — | — |
| Juan Valtierra Construction | Juan Andres Valtierra Martinez | — | (408) 449 6412 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Juanchy's Painting | Juanchy's Painting | contacto.juanchyspainting@gmail.com | (408) 830 7058 | Windows, patio, painters | Sunnyvale · Santa Clara County | — | — |
| Juarez & Sons Landscaping INC | Garcia Eriberto Juarez | — | (408) 506 0681 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Juarez R Landscaping | Juarez R Landscaping | — | (669) 294 7644 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Judd Enterprises INC | Frederick Clay Judd | — | (650) 967 2000 | GC, remodel, ADU | Palo Alto · Santa Clara County | — | — |
| Juleson Pool & Spa Care | Robert Edward Jr Juleson | — | (408) 223 2613 | Pool | San Jose · Santa Clara County | — | — |
| Julio & Family Roofing | Kevin Alexander Aguirre | office@juliofamilyroofing.com | (408) 624 0415 | Other roofers | San Jose · Santa Clara County | — | — |
| Juncker Restoration & Remodel | Jeffrey Kermit Juncker | — | (408) 560 6445 | GC, remodel, ADU | Los Gatos · Santa Clara County | — | — |
| Junming Dai | Junming Dai | — | (408) 858 8408 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Just Faucets | Just Faucets | — | (888) 721 8182 | Other | Cupertino · Santa Clara County | — | — |
| Just Faux | Just Faux | alicyn@justfaux.com | (801) 372-5433 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Just Gutters | Just Gutters | — | (408) 595 6549 | Other | San Jose · Santa Clara County | — | — |
| Just Leaks Incorporated | Hector Medina Flores | — | (408) 249 4646 | Other roofers | San Jose · Santa Clara County | — | — |
| Just Tankless | Just Tankless | info@justtankless.com | (925) 759 0000 | Electricians | Los Gatos · Santa Clara County | — | — |
| Just Window Cleaning And Maintenance Services | Richard Theus Rogers | — | (408) 684 0777 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Jv Group Construction INC | Victor Hugo Bringas Alarcon | — | (650) 385 1066 | GC, remodel, ADU | Mountain View · Santa Clara County | — | — |
| Jv Plumbing & Sewer Services INC | Garduno Noe Jaramillo | — | (408) 824 2752 | Other | San Jose · Santa Clara County | — | — |
| Jva Management Corp | Yeh Jen Fu | — | (650) 771 1745 | GC, remodel, ADU | Palo Alto · Santa Clara County | — | — |
| Jw Builders Construction INC | Jianwei Li | — | (408) 916 6465 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Jy Installs: Finish Carpentry | Jy Installs: Finish Carpentry | — | (408) 398 1337 | Other | Sunnyvale · Santa Clara County | — | — |
| Jyl Smart Electric | Lee Jaeyong | — | (408) 673 8241 | Electricians | San Jose · Santa Clara County | — | — |
| Jzm Construction INC | Juan Junior Zamaniego Martinez | — | (408) 315 2962 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Jzmac Builders | Jzmac Builders | marcos@jzmacbuilders.com | (415) 654 6379 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |