| Haynes Drywall Finishing | Haynes Drywall Finishing | — | (909) 915 6952 | Other | Cherry Valley · Riverside County | — | — |
| Hayward Power Systems INC | Derek Edward Hayward | — | (951) 966 4676 | Electricians | Menifee · Riverside County | — | — |
| Haywire Electric | Heidi Diann Meineke | — | (951) 232 3098 | Electricians | Wildomar · Riverside County | — | — |
| Hazz Custom Concrete INC | Jesus Alberto Lopez Patino | — | (760) 272 4396 | Other | Desert Hot Springs · Riverside County | — | — |
| Hazzard Backflow INC | Rolando Lee Hazzard | — | (323) 413 3960 | Other | Lake Elsinore · Riverside County | — | — |
| Hb A C Specialties | Hb A C Specialties | postmaster@hbacspecialties.com | (951) 840 1926 | HVAC | Riverside · Riverside County | — | — |
| Hb Facade Consulting | Howard Michael Benham | — | (951) 538 1790 | Windows, patio, painters | Corona · Riverside County | — | — |
| Hb Network Solutions INC | Albert Holguin Contreras | — | (714) 720 4575 | Other | Corona · Riverside County | — | — |
| Hb Shotcrete INC | Karen Ann Berger | — | (951) 430 9161 | GC, remodel, ADU | Menifee · Riverside County | — | — |
| Hbt Concrete INC | Trevvor Thomas Kihle | — | (951) 623 7290 | GC, remodel, ADU | Canyon Lake · Riverside County | — | — |
| Hc Air INC | Chao Han | — | (626) 679 8485 | HVAC | Eastvale · Riverside County | — | — |
| Hc Co | Hassun Amin Chaundhry | — | (657) 351 8622 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Hc Krew INC | Rick Eugene Weir | — | (949) 842 3102 | Other | Canyon Lake · Riverside County | — | — |
| Hc Landscape INC | Lopez Hugo Carrillo | — | (951) 445 8533 | Windows, patio, painters | Hemet · Riverside County | — | — |
| Hcc General Contractors | Arturo Jr Hernandez | — | (951) 701 7045 | Other | Jurupa Valley · Riverside County | — | — |
| Hcg Flooring Corp | Hernan Cesar Garcia | — | (562) 242 4390 | Other | Moreno Valley · Riverside County | — | — |
| Hci | Roland Richard Hubert | — | (714) 674 0527 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Hci Environmental & Engineering Service | Gregory Jon Parker | — | (951) 280 0298 | Other | Corona · Riverside County | — | — |
| Hd Services LLC | Lon Scott Mcintosh | — | (760) 975 9661 | Other | Hemet · Riverside County | — | — |
| Hd Stainless | Roberto Hernandez-Hernandez | — | (951) 823 4544 | Other | Riverside · Riverside County | — | — |
| Hdez Co Painting | Edgar Adrian Hernandez | — | (951) 557 0458 | Windows, patio, painters | Temecula · Riverside County | — | — |
| Hdrx LLC | Sean Patrick Murphy | — | (951) 903 8796 | GC, remodel, ADU | Eastvale · Riverside County | — | — |
| Hdz Builders INC | Esteban Hernandez | — | (951) 478 2946 | GC, remodel, ADU | Moreno Valley · Riverside County | — | — |
| Hdz Building Company | Eduardo Adrian Hernandez | — | (951) 906 0342 | GC, remodel, ADU | Menifee · Riverside County | — | — |
| Hdz Development INC | Jose Carmen Hernandez Cortez | — | (714) 868 9609 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Hdz Landscape Co | Jose Carmen Hernandez Cortez | hdzlandscape@hotmail.com | (714) 661 4953 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Hdz Landscape Services INC | Gerardo Hernandez | — | (714) 342 1600 | Windows, patio, painters | Moreno Valley · Riverside County | — | — |
| Heartwell Builders INC | Shannon Dean Myles | — | (760) 508 9533 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Heartwood Construction | Michael Clare Hayes | — | (909) 732 4733 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Heating & Air Solutions INC | Jorge Armando Cervantes Zavala | — | (951) 377 1519 | HVAC | Moreno Valley · Riverside County | — | — |
| Heating And Air 365 | Heating And Air 365 | — | (760) 522 3041 | HVAC | Hemet · Riverside County | — | — |
| Heating And Cooling Matters LLC | Felipe Hurtado | — | (951) 254 0122 | HVAC | Riverside · Riverside County | — | — |
| Heatwave Hero | Heatwave Hero | — | (442) 370 3427 | HVAC | Indio · Riverside County | — | — |
| Heaven Construction Services INC | Sirangua Francisco Tzintzun | — | (909) 213 4178 | GC, remodel, ADU | Calimesa · Riverside County | — | — |
| Heaven Painting INC | Jose Manuel Flores | hello@heavenpainting.com | (951) 490 2925 | Windows, patio, painters | Perris · Riverside County | — | — |
| Heavenly Landscape Design Co | Aeri Yim Kim | — | (951) 233 3959 | Windows, patio, painters | Corona · Riverside County | — | — |
| Heavy & Solid Metal Fabrication LLC | Gustavo Castaneda | — | (323) 994 4773 | Other | Moreno Valley · Riverside County | — | — |
| Heavy Duty Electric | Salas Luis Angel | interested@domainmarket.com | (909) 261 1907 | Electricians | Jurupa Valley · Riverside County | — | — |
| Heavy Hitters Ca INC | James Owen Mende | — | (406) 885 8347 | Other | Perris · Riverside County | — | — |
| Hec Development | Hec Development | — | (760) 898 7743 | GC, remodel, ADU | Palm Desert · Riverside County | — | — |