| American Pest Control | American Pest Control | joshua@apestc.com | (619) 272-6889 | Pest, tile roofs | Lemon Grove · Imperial County | — | — |
| Amigo Telephone | Amigo Telephone | — | (760) 353 5506 | Other | El Centro · Imperial County | — | — |
| Andrade Construction | Luis Rafael Andrade | — | (510) 504 6641 | GC, remodel, ADU | Heber · Imperial County | — | — |
| Andy Hoyt General Engineering INC | Andy Wayne Hoyt | — | (760) 337 5844 | Other | Holtville · Imperial County | — | — |
| Antara Construction | Lopez Roberto | — | (858) 752 8705 | GC, remodel, ADU | El Centro · Imperial County | — | — |
| Apex Roofing | Apex Roofing | — | (619) 575-6690 | Other roofers | Imperial Beach · Imperial County | — | — |
| Arc Performance Welding & Fabrication | Christopher Michael Flores | — | (760) 550 1283 | Other | Calipatria · Imperial County | — | — |
| Arctic Air Conditioning & Heating INC | Cesar Rodolfo Rodriguez | — | (760) 352 8855 | HVAC | Calexico · Imperial County | — | — |
| Aros Construction | Aros Alberto | — | (619) 954 5536 | GC, remodel, ADU | Calexico · Imperial County | — | — |
| Arrowhead Construction Company | Randy Lee Smith | — | (760) 427 1270 | GC, remodel, ADU | Brawley · Imperial County | — | — |
| Arthur Raymond Cato | Arthur Raymond Cato | — | (760) 540 0543 | GC, remodel, ADU | Brawley · Imperial County | — | — |
| Az Construction | Alan Ulysses Zarate | — | (760) 234 0365 | GC, remodel, ADU | Calexico · Imperial County | — | — |
| Az Construction | Luis Antonio Zavala Martinez | — | (760) 639 8435 | Other | Calexico · Imperial County | — | — |
| Aztec Construction Services INC | Tirso Lopez Lara | — | (760) 352 2619 | HVAC | Imperial · Imperial County | — | — |
| Aztec Fence Co | Fidel Maldonado Acosta | — | (760) 848 3750 | Other | Imperial · Imperial County | — | — |
| B & A Construction Services INC | Kyle Eugene Brown | — | (760) 996 0686 | Other | El Centro · Imperial County | — | — |
| Babb Electric | Charles Douglas Babb | charlie@babbelectric.com | (760) 482 8099 | Electricians | Brawley · Imperial County | — | — |
| Baeza's Heating And Cooling Rep | Baeza's Heating And Cooling Rep | — | (760) 344 9342 | HVAC | Brawley · Imperial County | — | — |
| Baja Design Engineering DBA Fire Protection | Juan Francisco Guzman Hernandez | — | (760) 556 6688 | Other | Calexico · Imperial County | — | — |
| Baja Electric | Luis Alberto Ayala Lopez | — | (760) 427 1052 | Electricians | Imperial · Imperial County | — | — |
| Baja Industrial Welding INC | Penatello Pedro | — | (760) 604 9958 | Other | Calexico · Imperial County | — | — |
| Barajas Roofing | Jose Humberto Barajas | — | (760) 352 6591 | Other roofers | El Centro · Imperial County | — | — |
| Beat The Heat | Beat The Heat | — | (760) 970 9065 | HVAC | El Centro · Imperial County | — | — |
| Bethel Construction Co | David Gil Flores Rojas | — | (760) 427 1051 | GC, remodel, ADU | El Centro · Imperial County | — | — |
| Big Big Pools And Spa INC | Jorge Jr Mendoza | bigbigpools1@gmail.com | (760) 457 8932 | Pool | Imperial · Imperial County | — | — |
| Big J Fencing INC | Jose Luis Ortega | — | (760) 353 1800 | Other | El Centro · Imperial County | — | — |
| Blackhawk Construction | William Jesse Whitman | info@blackhawk-construction.com | (760) 445 4225 | GC, remodel, ADU | El Centro · Imperial County | — | — |
| Blackman Plumbing INC | Michael R Wickline | — | (760) 352 3632 | HVAC | El Centro · Imperial County | — | — |
| Blue Bear Electric | Garcia Jonathan | — | (805) 866 8434 | Electricians | Imperial · Imperial County | — | — |
| Blue Moon Electric | Francisco Luna | — | (760) 890 8479 | Electricians | Holtville · Imperial County | — | — |
| Boconcrete INC | Jesus Gustavo Orihuela | — | (760) 556 2545 | Other | Imperial · Imperial County | — | — |
| Brea Pest Control | Brea Pest Control | — | (657) 681-4579 | Pest, tile roofs | Brea · Imperial County | — | — |
| Breezy Air Conditioning And Heating | Francisco Javier Castillo Rodriguez | — | (760) 960 5866 | HVAC | El Centro · Imperial County | — | — |
| Britech Electric INC | Britech Electric INC | — | (619) 416-5249 | Electricians | Imperial Beach · Imperial County | — | — |
| Brothers Roofing Co | Manuel Angolo Linares | — | (760) 622 9369 | Other roofers | Brawley · Imperial County | — | — |
| Bueno Homes Construction | Jonathan Al Bueno | — | (760) 886 2242 | GC, remodel, ADU | El Centro · Imperial County | — | — |
| Bueno Homes Construction | Jonathan Al Bueno | — | (760) 886 2242 | GC, remodel, ADU | El Centro · Imperial County | — | — |
| Build And Restore Construction | Mendoza Arellano Armando | — | (760) 697 8100 | GC, remodel, ADU | Heber · Imperial County | — | — |
| Bunger Welding | Bunger Welding | — | (520) 247 3061 | Other | Holtville · Imperial County | — | — |
| Burnworth Landscape INC | Erick Don Burnworth | — | (760) 455 7170 | Windows, patio, painters | El Centro · Imperial County | — | — |