| Horacio Guillermo Castellani | Horacio Guillermo Castellani | — | (714) 420 1568 | Windows, patio, painters | Corona · Riverside County | — | — |
| Horizon Commercial Electric | Joseph Patrick Hanson | — | (951) 205 4593 | Electricians | Lake Elsinore · Riverside County | — | — |
| Horizon Grading INC | Joshua Joseph Steffy | — | (951) 681 1345 | Other | Mira Loma · Riverside County | — | — |
| Horizon Hills Landscape | Horizon Hills Landscape | — | (714) 488 5749 | Windows, patio, painters | Perris · Riverside County | — | — |
| Horizon Landscaping INC | Nicolas Domingo Lauriano | — | (951) 956 1690 | Windows, patio, painters | Hemet · Riverside County | — | — |
| Horizon Patios And Outdoor Living | Andrew Scott Bernal | — | (909) 800 4267 | GC, remodel, ADU | Beaumont · Riverside County | — | — |
| Horizon Professional Landscape INC | Mendoza Lee Rafael | — | (760) 333 9371 | Windows, patio, painters | Coachella · Riverside County | — | — |
| Horizon Ridge Electric | Mehrshad Armakan | — | (858) 294 8900 | Electricians | Temecula · Riverside County | — | — |
| Horizon Underground LLC | Lance Lee Fair | — | (951) 603 0745 | Other | Norco · Riverside County | — | — |
| Horizon Window Care | Antonio Esquival Rodriguez | request@horizonservicespro.com | (951) 764 3528 | Windows, patio, painters | Murrieta · Riverside County | — | — |
| Horizons West | Margaret Ramirez Earleywine | info@horizons-west.com | (951) 926 4166 | GC, remodel, ADU | Winchester · Riverside County | — | — |
| Horsepower Corporation The | Sean Paul Vandenraadt | — | (951) 266 9390 | GC, remodel, ADU | Norco · Riverside County | — | — |
| Hoshaw Electric INC | Eric Martin Hoshaw | — | (951) 544 6574 | Electricians | Riverside · Riverside County | — | — |
| Hospitality Cleaning Solutions INC | Jose Anthony Briseno | — | (951) 264 6913 | GC, remodel, ADU | Lake Elsinore · Riverside County | — | — |
| Hospitality One Construction INC | Jason Paul Muzychenko | — | (951) 200 7540 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Hospitality One Construction LLC | Jason Paul Muzychenko | — | (760) 990 3950 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Hot Purple Battery Solutions LLC | Nathan Frederick Otto | — | (760) 322 4433 | Electricians | Palm Springs · Riverside County | — | — |
| Hot Purple Energy | Nathan Frederick Otto | solar@hotpurpleenergy.com | (760) 776-3737 | GC, remodel, ADU | Palm Springs · Riverside County | — | — |
| Hot Shots Construction | Brandon James Ruiz | — | (909) 380 5599 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Hot Water Heroes | Jose N Vizcarra | — | (951) 553 3882 | Other | Winchester · Riverside County | — | — |
| Hot Wire Electric | Louis Richard Meza | info@hotwireelectric.com | (909) 518 9672 | Electricians | Lake Elsinore · Riverside County | — | — |
| Hotel & Home Renovations | Hotel & Home Renovations | — | (760) 660 0481 | GC, remodel, ADU | Desert Hot Springs · Riverside County | — | — |
| Houghten Backhoe & Excavation | Houghten Backhoe & Excavation | — | (951) 515 4176 | Other | Temecula · Riverside County | — | — |
| House Construction | Pan Kyu Kim | — | (714) 643 4233 | GC, remodel, ADU | Menifee · Riverside County | — | — |
| House Doctor Muhammad | House Doctor Muhammad | — | (951) 347 3745 | GC, remodel, ADU | Banning · Riverside County | — | — |
| House To Home Construction | Jeffrey Lee Johnson | h2hcltd@gmail.com | (805) 312 0369 | GC, remodel, ADU | Anza · Riverside County | — | — |
| House2home Construction Ca | James Jeffrey Lindsay | — | (951) 497 0134 | GC, remodel, ADU | Moreno Valley · Riverside County | — | — |
| Housecall Pros | Housecall Pros | — | (951) 990 6597 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Houser Tile Company | Gregory Edward Houser | — | (562) 212 7033 | Other | Temecula · Riverside County | — | — |
| Houston's Backhoe | Houston's Backhoe | — | (951) 415 0242 | Other | Lake Elsinore · Riverside County | — | — |
| Houston's Landscaping | Austin Grant Bryant Houston | — | (909) 521 1272 | Windows, patio, painters | Moreno Valley · Riverside County | — | — |
| Hovey Rooter Service | Eric Michael Smothers | — | (951) 737 2298 | Other | Riverside · Riverside County | — | — |
| Hovik Ghukassian | Hovik Ghukassian | — | (818) 956 0899 | GC, remodel, ADU | Palm Desert · Riverside County | — | — |
| Howard David Erikson Jr | Howard David Erikson Jr | — | (951) 575 0076 | Other | Lake Elsinore · Riverside County | — | — |
| Howard Electric | Randall William Howard | — | (951) 377 4481 | Electricians | Hemet · Riverside County | — | — |
| Howard James Dansby | Howard James Dansby | — | (909) 376 2229 | GC, remodel, ADU | Hemet · Riverside County | — | — |
| Howard Powell Electric | Howard Alva Jr Powell | — | (760) 855 7064 | Electricians | Temecula · Riverside County | — | — |
| Howell's Electric INC | Joseph Kelly Howells | — | (760) 360 8782 | Electricians | La Quinta · Riverside County | — | — |
| Howitt Masonry | Howitt Masonry | — | (951) 202 2345 | Electricians | Menifee · Riverside County | — | — |
| Hoyt Construction | Henry John Hoyt | — | (760) 610 4837 | GC, remodel, ADU | Palm Springs · Riverside County | — | — |