| Hoh Builders | Austin Erin Carrier | — | (901) 569 1577 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| Holframe Incorporated | Robert Conrad Holman | — | (707) 484 2075 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Holguin Roofing INC | Efrain Amavizca Holguin | — | (707) 291 5821 | Other roofers | Annapolis · Sonoma County | — | — |
| Holiday Artisan Contracting | Matthew Fredric Holiday-Bruner | — | (707) 774 5810 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Holiday Builders | Holiday Builders | — | (707) 799 2750 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| Holiday Pool & Water Creations INC | David Stuart Hall | — | (707) 542 7665 | Pool | Santa Rosa · Sonoma County | — | — |
| Holland Landscape | Holland Landscape | — | (707) 849 1103 | Windows, patio, painters | Petaluma · Sonoma County | — | — |
| Holland Plumbing INC | Tyler Anthony Althuizen | micah@micahrich.com | (707) 364 6322 | Other | Petaluma · Sonoma County | — | — |
| Holley Construction | Clayton Harris Holley | — | (415) 574 8082 | GC, remodel, ADU | Cotati · Sonoma County | — | — |
| Holly Construction INC | Justin Bruce Hunter | — | (707) 541 0700 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Holman Plumbing Services | Justin David Holman | — | (707) 495 5002 | Other | Windsor · Sonoma County | — | — |
| Holubec Plumbing | Jared Emil Holubec | — | (707) 322 5763 | Other | Santa Rosa · Sonoma County | — | — |
| Holy Paradise Pool Service | Francisco Javier Bustamante | — | (520) 437 3663 | Pool | Santa Rosa · Sonoma County | — | — |
| Home Check Inspection Services | Home Check Inspection Services | — | (707) 246-9680 | Inspectors | Sonoma · Sonoma County | — | — |
| Home Front Fence INC | Gabriel Botello | — | (707) 585 2060 | Other | Rohnert Park · Sonoma County | — | — |
| Home Hard Builder INC | Enriquez Gutierrez Gerardo | homehardbuilderinc@hotmail.com | (707) 338 2878 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Home Owners Electric | Roger Alan Smith | — | (510) 537 1017 | Electricians | Santa Rosa · Sonoma County | — | — |
| Home Tile & Stone | Maurice Martin Sr Whitlock | hometileandstone@gmail.com | (707) 369 0513 | Other | Sebastopol · Sonoma County | — | — |
| Homeiq Technologies INC | Tyrone Carstarphen | — | (415) 860 2219 | Other | Sebastopol · Sonoma County | — | — |
| Homepro Construction | David Paul Lundquist | — | (707) 584 4700 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Homespecialties | Kenneth Brigham Kenworthy | — | (707) 484 5725 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Homestar Building Performance INC | Orlondo Paul Franci | — | (707) 849 9237 | GC, remodel, ADU | Forestville · Sonoma County | — | — |
| Homestead Builders Group INC | Candice Ann Rania | — | (707) 494 6065 | GC, remodel, ADU | Healdsburg · Sonoma County | — | — |
| Hometown Leak Detection INC | Michael Albert Rogina | hometownleakdetection@gmail.com | (707) 890 0904 | Other | Santa Rosa · Sonoma County | — | — |
| Honey Bee Construction | Bryan Paul Gallagher | — | (707) 621 4223 | GC, remodel, ADU | Forestville · Sonoma County | — | — |
| Horizon Builders INC | Christopher Peter Grippi | — | (707) 799 7815 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| Horizon Constructors INC | Melody Darlene Philbrook | — | (805) 491 5831 | GC, remodel, ADU | Santa Rosa Valley · Sonoma County | — | — |
| Horizon Roofing | Michael Allan Stovall | — | (707) 935 4420 | Other roofers | Vineburg · Sonoma County | — | — |
| Horobin Construction INC | Alan Horobin | — | (707) 887 7841 | GC, remodel, ADU | Forestville · Sonoma County | — | — |
| Hosey Construction INC | Charles Robert Hosey | — | (707) 695 9312 | GC, remodel, ADU | Cotati · Sonoma County | — | — |
| House Construction | Jesse Paul Jr House | — | (707) 799 3088 | Electricians | Healdsburg · Sonoma County | — | — |
| Houston Electric And Telecommunications Incorporated | Hugo Brokopp Condeso | — | (707) 829 3662 | Electricians | Sebastopol · Sonoma County | — | — |
| Houston Industries | Eric Wayne Houston | — | (209) 985 8564 | Electricians | Sonoma · Sonoma County | — | — |
| Howard Construction INC | Philip James Jr Howard | info@howardconstruction.com | (916) 444-6000 | Other roofers | Santa Rosa · Sonoma County | — | — |
| Howards Painting | Howards Painting | support@webador.com | (707) 293 0756 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Howdy's Drywall INC | Howdyshell Gary | — | (707) 217 3987 | Other | Cotati · Sonoma County | — | — |
| Howell General Engineering LLC | Carl Russell Jr Howell | — | (707) 321 2560 | GC, remodel, ADU | Cloverdale · Sonoma County | — | — |
| Howie Excavating And Grading | Howie Excavating And Grading | — | (707) 974 2188 | Other | Santa Rosa · Sonoma County | — | — |
| Howshar Plumbing & Fire Protection | Howshar Plumbing & Fire Protection | — | (707) 486 4054 | Other | Santa Rosa · Sonoma County | — | — |
| Hoyt Plumbing | Hoyt Plumbing | — | (707) 824 4698 | HVAC | Sebastopol · Sonoma County | — | — |