| Jesse L Torres | Jesse L Torres | — | (209) 417 4653 | GC, remodel, ADU | Patterson · Stanislaus County | — | — |
| Jesus M Besinaiz | Jesus M Besinaiz | — | (408) 690 7246 | Other | Patterson · Stanislaus County | — | — |
| Jet Electric Group INC | Moreen Sarika Kumar | — | (209) 678 5538 | Electricians | Modesto · Stanislaus County | — | — |
| Jet Electrical Heating Air Conditioning & Plumbing | David Charles De Cato | — | (831) 233 0571 | HVAC | Salida · Stanislaus County | — | — |
| Jf & Son's Landscaping | Junior Flores Lopez | — | (209) 988 3434 | Windows, patio, painters | Modesto · Stanislaus County | — | — |
| Jf Finish Carpentry INC | Juan Gabriel Farias Solorio | — | (209) 662 3851 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Jf Landscaping INC | Figueroa Janet | — | (209) 595 0406 | Windows, patio, painters | Newman · Stanislaus County | — | — |
| Jg Power Solutions | Jg Power Solutions | — | (408) 849 7812 | Electricians | Newman · Stanislaus County | — | — |
| Jg Pro Construction INC | Juan Francisco Lafarga Gomez | — | (510) 340 1988 | GC, remodel, ADU | Ceres · Stanislaus County | — | — |
| Jh Renovations & Handyman Service LLC | Jason Alexander Hamby | — | (925) 980 0429 | GC, remodel, ADU | Oakdale · Stanislaus County | — | — |
| Ji Welding | Ji Welding | — | (209) 678 8552 | Other | Newman · Stanislaus County | — | — |
| Jim Fernandes Construction INC | Norma Jean Fernandes | eben@eyebytes.com | (209) 634 2344 | GC, remodel, ADU | Turlock · Stanislaus County | — | — |
| Jim Miller Construction | James Bruce Miller | — | (209) 985 6492 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Jim Reich Construction | James Micheal Reich | — | (209) 595 9933 | GC, remodel, ADU | Turlock · Stanislaus County | — | — |
| Jimenez Dairy Construction | Sergio Casillas Jimenez | — | (209) 606 2073 | GC, remodel, ADU | Turlock · Stanislaus County | — | — |
| Jimenez Painting | Jimenez Painting | — | (209) 502 8579 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Jimmy Hendricks Construction INC | James David Hendricks | — | (209) 329 3782 | GC, remodel, ADU | La Grange · Stanislaus County | — | — |
| Jimmy's Plumbing INC | Jose Jaime Dominguez | — | (209) 683 6644 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Jj Exterior Builder Design | Gladis Maribel Aldama | — | (408) 981 0748 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Jj Ramirez Construction INC | Juan Jose Ramirez | — | (209) 849 8850 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Jjc Security System Solutions | Joshua John Ciccarelli | — | (209) 606 4006 | Electricians | Modesto · Stanislaus County | — | — |
| Jjjm General Construction INC | Jose Madrigal | — | (831) 320 1908 | GC, remodel, ADU | Ceres · Stanislaus County | — | — |
| Jkb Energy Corporation | Mark Charles Heald | — | (209) 632 2647 | GC, remodel, ADU | Turlock · Stanislaus County | — | — |
| Jkb Living INC A California Corporation | James Konrad Brenda | — | (209) 632 2647 | GC, remodel, ADU | Turlock · Stanislaus County | — | — |
| Jkn Construction | Jesus Ricardo Arreguin-padilla | — | (925) 727 7435 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Jl Construction Of Central Valley | Jorge Fernando Lopez Rodriguez | — | (209) 262 5621 | GC, remodel, ADU | Turlock · Stanislaus County | — | — |
| Jl Drywall | Jl Drywall | jeff@jldrywall.com | (209) 542 3871 | Other | Hughson · Stanislaus County | — | — |
| Jl Mccomb Coating Services | Bermudez Angelo | — | (209) 450 7777 | Windows, patio, painters | Patterson · Stanislaus County | — | — |
| Jlf Flooring INC | Juan Luis Figueroa | — | (209) 324 3260 | Other | Salida · Stanislaus County | — | — |
| Jm Painting | Jm Painting | — | (209) 549 6140 | Windows, patio, painters | Modesto · Stanislaus County | — | — |
| Jm Plumbing | Jm Plumbing | — | (925) 325 2678 | Other | Turlock · Stanislaus County | — | — |
| Jmc Construction | Mendieta Campos Javier | — | (209) 447 7620 | GC, remodel, ADU | Waterford · Stanislaus County | — | — |
| Jmc Floors | Jmc Floors | — | (925) 200 6233 | Other | Riverbank · Stanislaus County | — | — |
| Jms Field Construction INC DBA Field Construction | John Mark Sappenfield | — | (209) 985 4856 | GC, remodel, ADU | Oakdale · Stanislaus County | — | — |
| Jmvg Construction INC | Shahryar Soroosh | — | (209) 495 6657 | GC, remodel, ADU | Riverbank · Stanislaus County | — | — |
| Jmw Enterprise | Jmw Enterprise | — | (209) 603 1204 | Other | Oakdale · Stanislaus County | — | — |
| Joaquin Painting INC | Mark Anthony Butler | sales@joaquinpainting.com | (209) 529 8811 | Windows, patio, painters | Ceres · Stanislaus County | — | — |
| Joaquin Plumbing Co INC | Andres Joaquin | — | (408) 835 8543 | Other | Riverbank · Stanislaus County | — | — |
| Jody Robert Middleton Construction | Jody Robert Middleton | — | (209) 652 8286 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Joe Butler Painting | Joe Butler Painting | — | (209) 848 0633 | Windows, patio, painters | Oakdale · Stanislaus County | — | — |