| Harlan Cristy White | Harlan Cristy White | — | (805) 216 1414 | Other | Ventura · Ventura County | — | — |
| Harmony Floors | Harmony Floors | — | (805) 698 3367 | GC, remodel, ADU | Santa Paula · Ventura County | — | — |
| Harmony Restoration | Harmony Restoration | — | (805) 799 0345 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Harold Jones Landscape INC | Tracy Suzanne Sanders | — | (805) 582 7443 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| Harper's Handyman & Construction INC | Luis Enrique Martinez | — | (805) 649 4400 | GC, remodel, ADU | Oak View · Ventura County | — | — |
| Harrington & Associates | Shaun Michael Fran Harrington | — | (323) 459 9507 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| Harris-anderson | Chad David Anderson | info@harris-anderson.com | (310) 890 8413 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Hartigan / Foley General Building Contractors INC | Jessie James Canchola | — | (805) 643 9898 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Hartigan Electric | Ciaran Joshua Hartigan | — | (805) 798 5545 | Electricians | Oak View · Ventura County | — | — |
| Harvey Aingworth Acoustic Ceilings | Harvey Aingworth Acoustic Ceilings | — | (805) 381 0389 | Other | Thousand Oaks · Ventura County | — | — |
| Havland LLC | Avery Havland Stewart | — | (805) 890 7901 | Other | Fillmore · Ventura County | — | — |
| Hawk Construction & Maintenance INC | Stephen Joseph Steric | — | (805) 652 2400 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Hawkeye Construction Services | Greg Harlan Julius | — | (818) 997 6373 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Hawkeye Landscape Design | Elfman Geri | — | (310) 913 0589 | Windows, patio, painters | Thousand Oaks · Ventura County | — | — |
| Hawks Built | Hawks Built | — | (805) 490 3621 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Hawse Abbey Carpet | Robert Allen Hawse | — | (805) 527 3716 | Other | Simi Valley · Ventura County | — | — |
| Hawse Construction | Robert Allen Hawse | — | (805) 527 3716 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Hawthorn Builders Group LLC | Joshua Russell Hixon | — | (385) 391 7447 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Hay-wire Electric INC | Spencer Douglas Hay | — | (805) 428 1163 | Electricians | Simi Valley · Ventura County | — | — |
| Hayek Construction | Rimon Edwar Hayek | — | (818) 744 1731 | Electricians | Oxnard · Ventura County | — | — |
| Hazbusters | Autumn Rachel Fanelli | — | (800) 378 9300 | Other | Westlake Village · Ventura County | — | — |
| Hc Unlimited Tile & Stone INC DBA Hc Unlimited Tile | Hugo Castaneda-Fregoso | — | (805) 612 7873 | Other | Oxnard · Ventura County | — | — |
| Hc Window Coverings | Concepcion Marina Quezada | — | (805) 826 4660 | Other | Oxnard · Ventura County | — | — |
| Hd Services Construction Clean Up INC | Steven G Hernandez | — | (805) 216 5985 | Other | Oxnard · Ventura County | — | — |
| Hearns Roofing | Glenn Michael Hearns | contact@hearnsroofing.com | (805) 501 0532 | Other roofers | Simi · Ventura County | — | — |
| Heartland Restoration Company LLC | Glen Arthur Iii Holden | glen@heartlandrestorationco.com | (805) 219-6732 | GC, remodel, ADU | Oak View · Ventura County | — | — |
| Heath Loux | Heath Loux | — | (805) 910 8494 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Heathcote Engineering | Mark Andrew Heathcote | — | (805) 907 5968 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| Heathcote Geotechnical | Heathcote Geotechnical | — | (805) 644 9978 | Windows, patio, painters | Ventura · Ventura County | — | — |
| Heating Cooling And Beyond INC | Rahamim Amir | — | (818) 874 3191 | HVAC | Westlake Village · Ventura County | — | — |
| Heavy Wall Electric | Israel Gabino Evangelista | — | (805) 765 5042 | Electricians | Oxnard · Ventura County | — | — |
| Hec - Fern Pool & Spa Repair | Fernandez Hector | — | (805) 663 1937 | Pool | Oxnard · Ventura County | — | — |
| Hecker Tile | Hecker Tile | — | (805) 320 0118 | Other | Ventura · Ventura County | — | — |
| Hector Camarena | Hector Camarena | — | (818) 305 8026 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Hector Cardenas Felix | Hector Cardenas Felix | — | (805) 607 5490 | Other | Santa Paula · Ventura County | — | — |
| Hector Torres | Hector Torres | htorrescomposer@gmail.com | (805) 551 9218 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Hedrick Construction INC | Justin David Hedrick | — | (661) 319 5969 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Heed Construction INC | James Richard Dearkland | — | (805) 641 3303 | Electricians | Ventura · Ventura County | — | — |
| Hefner Construction | Richard Lee Jr Hefner | — | (805) 428 0929 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Heinemann Electric | Kirk Alan Heinemann | — | (661) 435 1183 | Electricians | Simi Valley · Ventura County | — | — |