| Hastain Construction And Maintenance | Brian Thomas Hastain | — | (909) 821 7649 | GC, remodel, ADU | Yucaipa · San Bernardino County | — | — |
| Hastings Pacific DBA Hastings Electric | Matthew Charles Hastings | — | (818) 683 4335 | Electricians | Big Bear City · San Bernardino County | — | — |
| Hathaway Construction | Robert Glenn Hathaway | — | (951) 522 4037 | GC, remodel, ADU | Redlands · San Bernardino County | — | — |
| Hathaway Engineering | Hathaway Engineering | — | (760) 401 5122 | Other | Yucca Valley · San Bernardino County | — | — |
| Haus Of Floor Decor INC | Terry Duane Payton | — | (909) 866 8803 | Other | Big Bear Lake · San Bernardino County | — | — |
| Havasu Concrete And Construction | Cruz-jimenez Mateo | — | (760) 596 7464 | GC, remodel, ADU | Apple Valley · San Bernardino County | — | — |
| Havasu Sand Bar Pools | Havasu Sand Bar Pools | — | (909) 965 9852 | Pool | San Bernardino · San Bernardino County | — | — |
| Haven Cleaning And Restoration INC | Alexandru Adam Stanciulescu | — | (844) 631 7784 | GC, remodel, ADU | Upland · San Bernardino County | — | — |
| Haven Electric | Brian John Trevithick | — | (909) 908 0126 | Electricians | Rancho Cucamonga · San Bernardino County | — | — |
| Haven King Construction | Wang Jianpeng | — | (323) 621 8185 | GC, remodel, ADU | Ontario · San Bernardino County | — | — |
| Haven Landscaping | Haven Landscaping | — | (909) 285 6300 | Windows, patio, painters | Fontana · San Bernardino County | — | — |
| Havenwood Construction LLC | Hector Yanez Solis | — | (909) 202 2631 | GC, remodel, ADU | Rialto · San Bernardino County | — | — |
| Hawk Painting And Construction | Somoano Manuel | — | (562) 755 5681 | GC, remodel, ADU | Chino · San Bernardino County | — | — |
| Hawkeye Development | Hawkeye Development | — | (909) 528 7197 | GC, remodel, ADU | Running Springs · San Bernardino County | — | — |
| Hawkins Const | Hawkins Const | — | (909) 664 8136 | GC, remodel, ADU | Chino · San Bernardino County | — | — |
| Hay Electric | Lars W Hay | — | (909) 867 3163 | Electricians | Green Valley Lake · San Bernardino County | — | — |
| Hayward Environmental Consulting H E C | Robert Lee Hayward | — | (909) 481 1106 | Other | Rancho Cucamonga · San Bernardino County | — | — |
| Haz Mat Trans INC | Fred George Jr Knifer | diana.knifer@hazmattrans.com | (909) 889 5607 | Other | Rancho Cucamonga · San Bernardino County | — | — |
| Hazmat Tsdf INC | Tracy Bennett | — | (909) 546 1354 | Other | Colton · San Bernardino County | — | — |
| Hb Construction | Hugo Armando Balderas Rodriguez | — | (909) 544 3250 | GC, remodel, ADU | Ontario · San Bernardino County | — | — |
| Hci Sprinkler INC | Donald Raymond Harrison | — | (909) 628 7773 | Electricians | Ontario · San Bernardino County | — | — |
| Hci Systems INC | Hany Ibrahim Dimitry | — | (909) 628 7773 | Electricians | Ontario · San Bernardino County | — | — |
| Hd Artificial Turf | Jose Luis Camarena | — | (760) 244 0060 | Other | Hesperia · San Bernardino County | — | — |
| Hd Garage Door Services LLC | Nelson A Morales | hdgaragedoorservices@gmail.com | (909) 267 5071 | Other | Victorville · San Bernardino County | — | — |
| Hdc Construction INC | Baudelio Jr Huizar | — | (909) 626 0214 | GC, remodel, ADU | Ontario · San Bernardino County | — | — |
| Hdz Construct INC | Angel Arturo Hernandez | — | (909) 489 3145 | GC, remodel, ADU | Ontario · San Bernardino County | — | — |
| Hdz Construction INC | Carlos Hernandez | — | (714) 448 8318 | GC, remodel, ADU | Ontario · San Bernardino County | — | — |
| Heard Electric | Charles Anthony Heard | — | (909) 222 2234 | Electricians | San Bernardino · San Bernardino County | — | — |
| Heart Of Stone & Marble | Heart Of Stone & Marble | — | (626) 715 8188 | Other | Oak Hills · San Bernardino County | — | — |
| Heaston Construction | Douglas William Heaston | — | (909) 653 6941 | GC, remodel, ADU | Redlands · San Bernardino County | — | — |
| Heat Transfer Refrigeration | Jaimes Faraon Esquivel | — | (442) 285 4237 | HVAC | Oak Hills · San Bernardino County | — | — |
| Heavenly Gardens | Lisa Stephanie Lee | jgossard@aol.com | (909) 277 4366 | Windows, patio, painters | Rancho Cucamonga · San Bernardino County | — | — |
| Hectco Construction INC | Othoniel Avila Jara | — | (909) 841 9060 | Other | Bloomington · San Bernardino County | — | — |
| Hector Antonio Grijalva | Hector Antonio Grijalva | — | (760) 244 2210 | Other | Hesperia · San Bernardino County | — | — |
| Hector Construction & Remodeling INC | Jose Alberto Reyes Castro | — | (714) 865 4877 | GC, remodel, ADU | Crestline · San Bernardino County | — | — |
| Hector Damian Martinez | Hector Damian Martinez | — | (909) 969 5603 | GC, remodel, ADU | Fontana · San Bernardino County | — | — |
| Hector's Fence | Hector's Fence | — | (909) 251 5721 | Other | Fontana · San Bernardino County | — | — |
| Hedgehog Landscape | Hedgehog Landscape | — | (909) 560 5245 | Windows, patio, painters | Alta Loma · San Bernardino County | — | — |
| Hedrick Fire Protection | Robert Victor Hedrick | office@hedrickfireprotection.com | (909) 613 0083 | Electricians | Chino · San Bernardino County | — | — |
| Heejung Ahn | Heejung Ahn | — | (626) 243 3633 | GC, remodel, ADU | Chino · San Bernardino County | — | — |