| J S Nowak LLC | Jeffery Steven Nowak | — | (209) 426 5649 | Other | Lodi · San Joaquin County | — | — |
| J Sanchez Construction INC | Zambrano Joel Sanchez | — | (650) 669 6360 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| J Shuman Door Installations | J Shuman Door Installations | — | (760) 994 2155 | Other | Lodi · San Joaquin County | — | — |
| J T Construction | J Trinidad Enriquez | — | (209) 594 7638 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| J V D Construction | Vidales Diaz Jaime | — | (209) 541 7120 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| J V L Tile | Jesus Antonio Villagrana Lopez | — | (209) 663 5620 | Other | Lodi · San Joaquin County | — | — |
| J V Malagon Painting LLC | Jose Valente Malagon Torres | — | (209) 271 7582 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| J V Roofing | Villalovos Jesse | — | (408) 761 2216 | Other roofers | Tracy · San Joaquin County | — | — |
| J Vollbrecht Consulting INC | Jennifer Ashley Vollbrecht | — | (209) 608 1003 | GC, remodel, ADU | Escalon · San Joaquin County | — | — |
| J W Carroll Enterprises INC DBA A B C Plumbing Heating & Air | James William Carroll | — | (209) 334 2938 | HVAC | Lodi · San Joaquin County | — | — |
| J W Enterprises | Jerry Allen Matthews | info@jwenterprises.com | (209) 481 8374 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| J&h Quality Drywall INC | Islas-villa Adrian | — | (209) 639 4502 | Other | Stockton · San Joaquin County | — | — |
| J&s Robinson Const LLC | James Mario Robinson | — | (209) 969 8198 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| J's Construction | Kuruc Julius | — | (510) 299 5343 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| J-c General Engineering INC | John Austin Jr Coughran | — | (209) 333 5295 | Other | Lodi · San Joaquin County | — | — |
| J2 Custom Construction | Darius Bracy | — | (209) 482 5183 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| J3 Painting | Camarillo Jesus | — | (209) 541 6850 | Windows, patio, painters | Manteca · San Joaquin County | — | — |
| Jack A Welch Construction Co | Jack Allan Welch | — | (209) 471 8671 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Jacob Foster Installations | Jacob Foster Installations | — | (209) 430 6328 | Other | Manteca · San Joaquin County | — | — |
| Jadaj Drywall Co | Javier Hernandez | — | (408) 706 1038 | Other | Stockton · San Joaquin County | — | — |
| Jag Concrete INC | James Allen Gates | — | (209) 747 4301 | GC, remodel, ADU | Acampo · San Joaquin County | — | — |
| Jaime&riveira Construction INC | Rafael Jaime Rico | — | (209) 747 7659 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Jaimes Heating And Air | Jaimes Heating And Air | — | (209) 298 4420 | HVAC | Stockton · San Joaquin County | — | — |
| Jak Plumbing | Jak Plumbing | johnanthony@jakplumbing.com | (209) 507 6654 | Other | Lodi · San Joaquin County | — | — |
| Jalisco Pool Plumbing | Jalisco Pool Plumbing | — | (925) 989 6960 | Pool | Tracy · San Joaquin County | — | — |
| James Alit's Custom Remodeling | James Alit's Custom Remodeling | — | (209) 456 1029 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| James C Shropshire DBA Telephase | James C Shropshire DBA Telephase | — | (916) 290 9318 | Other | Lodi · San Joaquin County | — | — |
| James D Eavenson | James D Eavenson | — | (209) 823 4930 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| James Jory DBA Jory Siding And Decking | Jory Siding And Decking | — | (209) 981 6449 | Windows, patio, painters | Lodi · San Joaquin County | — | — |
| James Kranich Plastering Construction | James David Kranich | — | (209) 365 7443 | Other | Lodi · San Joaquin County | — | — |
| James M Harvey | James M Harvey | — | (209) 471 3598 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| James Mccarren | James Mccarren | — | (209) 996 8960 | Pool | Ripon · San Joaquin County | — | — |
| James Minh Le | James Minh Le | — | (209) 470 4543 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Janco Industries INC | Terry Lester Alexander | sjanecek@jancoindustries.com | (209) 832 9314 | Other | Tracy · San Joaquin County | — | — |
| Jaquez Builders LLC | Andy Robert Rosten | — | (209) 637 8780 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Jared Gomes Renovation | Jared Gomes Renovation | — | (209) 625 7887 | GC, remodel, ADU | Acampo · San Joaquin County | — | — |
| Jared Mount Construction | Jared George Ed Mount | — | (209) 922 6564 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Jaswal Dream Builder INC | Jaswal Jaskaran | jaydreambuilder@gmail.com | (209) 610 7274 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Jauregui Construction | Jauregui Fuentes Ezequiel | — | (510) 333 2079 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Javi Electric | Gutierrez Javier | — | (707) 481 8686 | Electricians | Stockton · San Joaquin County | — | — |