| Jerry's Tree Service A Partnership | Tami Elizabeth Kalfos | — | (707) 778 8264 | Tree | Petaluma · Sonoma County | — | — |
| Jervan Electric | Wayne Michael Jervan | — | (707) 974 3947 | Electricians | Santa Rosa · Sonoma County | — | — |
| Jess Leigh Homes INC DBA Honey & Co Construction | Brian Westley Todd | — | (707) 772 6004 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| Jesse Construction | Jesse Daniel Silverman | — | (530) 680 9790 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Jesse Stark Custom Painting | Jesse Stark Custom Painting | hello@jessestarkcustompainting.com | (707) 481 0621 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Jesus Arellano Painting | Jesus Arellano Painting | — | (415) 717 0797 | Windows, patio, painters | Rohnert Park · Sonoma County | — | — |
| Jesus Garcia Maldonado | Jesus Garcia Maldonado | — | (707) 318 9730 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Jesus Rangel Landscape | Jesus Rangel Landscape | — | (415) 240 3800 | Windows, patio, painters | Petaluma · Sonoma County | — | — |
| Jetton Construction Co | Kenneth James Jetton | %20info@jettonconstruction.com | (707) 396 2744 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Jf Electric INC | James Philip Freedman | — | (415) 230 9266 | Electricians | Petaluma · Sonoma County | — | — |
| Jfm Septic System Installation LLC | Jose Jesus Flores Medrano | — | (707) 293 6548 | Other | Forestville · Sonoma County | — | — |
| Jg Construction And Sons | Samuel Gonzalez | — | (707) 478 2202 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Jg Handyman & Contractor Services | John Eric Garcia | — | (707) 338 2707 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Jg Landscape Construction | Gabriel Julian Martinez | — | (707) 528 6542 | Windows, patio, painters | Windsor · Sonoma County | — | — |
| Jg Prefabricated Equipment Installer INC | Jose Guillermo Garcia Rodriguez | — | (707) 975 0634 | Other | Santa Rosa · Sonoma County | — | — |
| Jgl Services Residential Renovations | Gutierrez Lopez Jose | — | (707) 332 6105 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Jim Carrell Construction | James Paul Carrell | — | (707) 318 1414 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Jim Hughes Construction Company | James Edward Hughes | — | (707) 996 8986 | GC, remodel, ADU | Glen Ellen · Sonoma County | — | — |
| Jim Muhic Construction | James Robert Muhic | — | (707) 894 4751 | GC, remodel, ADU | Cloverdale · Sonoma County | — | — |
| Jim Smith's Door Service | James C Smith | — | (707) 322 3611 | GC, remodel, ADU | Cotati · Sonoma County | — | — |
| Jim Todorovitch Paving | Jim Todorovitch Paving | — | (707) 753 1620 | Other | Santa Rosa · Sonoma County | — | — |
| Jim's Paving | Jim's Paving | — | (707) 477 3291 | Other | Santa Rosa · Sonoma County | — | — |
| Jimenez Landscaping | Jimenez Landscaping | contact@sansoxygen.com | (707) 332 5653 | Windows, patio, painters | Sonoma · Sonoma County | — | — |
| Jimenez Plumbing Marin | Jimenez Jorge | — | (707) 342 4711 | Other | Petaluma · Sonoma County | — | — |
| Jimmco Builders | James Robert Muhic | — | (707) 894 4751 | GC, remodel, ADU | Cloverdale · Sonoma County | — | — |
| Jj Cook Enterprises INC | Joel Philip Cook | — | (707) 206 2980 | GC, remodel, ADU | Windsor · Sonoma County | — | — |
| Jk & R Drywall INC | Rodriguez Robertino Real | — | (530) 554 8631 | Other | Santa Rosa · Sonoma County | — | — |
| Jl Construction INC | Jeffrey Thomas Luchetti | — | (707) 527 5788 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Jlb Construction | Jeremiah Lloyd Brown | info@jlb-construction.com | (707) 889 6992 | GC, remodel, ADU | Windsor · Sonoma County | — | — |
| Jlm Construction Services INC | Denis Patrick Barrett | — | (707) 782 3652 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Jlm Painting INC | Jeremey Lee Martin | meisner331@comcast.net | (707) 782 3652 | Windows, patio, painters | Petaluma · Sonoma County | — | — |
| Jlp Landscape Contracting INC | Joseph Francis Jr Verdu | — | (707) 526 6285 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Jm HVAC | Jm HVAC | — | (707) 541 6921 | HVAC | Petaluma · Sonoma County | — | — |
| Jm Painting Company | Jeffery Lynn Martinez | — | (707) 328 0603 | Windows, patio, painters | Rohnert Park · Sonoma County | — | — |
| Jmsf Construction | Francisco Javier Santos De Sola | — | (415) 886 5937 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Jmw Builders INC | Jim Ward | — | (530) 913 7800 | GC, remodel, ADU | Windsor · Sonoma County | — | — |
| Jnc Construction | Cortes Jaime | — | (707) 396 3824 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Jo Plumbing INC | Justin Wade Ogle | — | (707) 321 7827 | Other | Santa Rosa · Sonoma County | — | — |
| Joaquin Murrietta Creasy | Joaquin Murrietta Creasy | — | (415) 798 0804 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Joe Antra / Builder | Joe Antra / Builder | — | (707) 360 7465 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |