| E - S Painting Services | Santiago-martinez Enrique | — | (714) 470 1040 | Windows, patio, painters | Placentia · Orange County | — | — |
| E A R Engineering Construction & Support Services | Ravindra Prasad Pendurthi | — | (909) 821 9967 | Electricians | Orange · Orange County | — | — |
| E And C Prestige Construction INC | Andres Abel Simon Estrada | — | (714) 797 3254 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| E B Design And Build | E B Design And Build | — | (310) 699 5776 | GC, remodel, ADU | Costa Mesa · Orange County | — | — |
| E B K Woodworking INC | Eric Blaine Kline | — | (714) 222 8889 | Other | Brea · Orange County | — | — |
| E B Plumbing Services INC | Ernesto Manuel Bonilla Leon | — | (714) 366 9830 | Other | Orange · Orange County | — | — |
| E B S Contractors INC | Ahoobim Ebrahim | — | (714) 444 4481 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| E C Applications LLC | Christopher Paul Fore | — | (714) 921 9848 | Other | Anaheim · Orange County | — | — |
| E C B Electrical | Robert Michael Vela | — | (714) 757 1494 | Electricians | Santa Ana · Orange County | — | — |
| E C C Flooring Services | Cuapio Cuapio Efrain | — | (714) 326 7305 | Other | Anaheim · Orange County | — | — |
| E C Construction | Eric Christopher Castberg | — | (714) 369 3253 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| E C G Companies INC | Michael Christopher Volchok | — | (714) 986 9148 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| E C O Sign | James Dean Simington | — | (562) 928 4700 | GC, remodel, ADU | Seal Beach · Orange County | — | — |
| E C Tile | E C Tile | — | (714) 588 9719 | Other | Anaheim · Orange County | — | — |
| E D Roofing Systems Co | Elias Macias Davila | edroofing2015@gmail.com | (714) 968 6135 | Other roofers | Huntington Beach · Orange County | — | — |
| E E Plumbing | E E Plumbing | — | (949) 254 6450 | Other | Rancho Mission Viejo · Orange County | — | — |
| E G Montanez Construction INC | Emmanuel Gavino Montanez | — | (949) 888 8606 | GC, remodel, ADU | Trabuco Canyon · Orange County | — | — |
| E H B Construction | Edward Huan Bui | — | (714) 702 7111 | GC, remodel, ADU | Santa Ana · Orange County | — | — |
| E I De Smet Plumbing | Eugen Isidore De Smet | — | (714) 536 3688 | Other | Santa Ana · Orange County | — | — |
| E J D Building & Development INC | Ernesto Alberto Pineda | — | (909) 376 5483 | GC, remodel, ADU | Fullerton · Orange County | — | — |
| E J E Construction INC | Elio Moreno | — | (562) 553 2375 | GC, remodel, ADU | La Habra · Orange County | — | — |
| E J Glasgow INC | Ernest John Glasgow | — | (714) 493 8232 | Other roofers | Orange · Orange County | — | — |
| E J Michael Studio | Ernest James Moore | — | (760) 799 6730 | Windows, patio, painters | San Clemente · Orange County | — | — |
| E J Riggs Construction | Eric Jonathan Riggs | — | (714) 795 0824 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| E J Woodworking | E J Woodworking | — | (949) 233 5154 | Other | San Juan Capistrano · Orange County | — | — |
| E K Marble Restoration | E K Marble Restoration | — | (949) 735 3742 | Restoration | Newport Beach · Orange County | — | — |
| E L Ectric Power Services INC | Eric Guillermo Lopez | — | (714) 709 1911 | Electricians | Santa Ana · Orange County | — | — |
| E L T Plumbing | E L T Plumbing | — | (714) 363 1570 | Other | Anaheim · Orange County | — | — |
| E L U INC | Adrian Bizoi | — | (714) 429 1894 | Electricians | Santa Ana · Orange County | — | — |
| E L Welding | E L Welding | — | (714) 552 1812 | Other | Huntington Beach · Orange County | — | — |
| E M Electrical | Eric Lee Mickler | — | (949) 283 2036 | Electricians | Costa Mesa · Orange County | — | — |
| E M F Construction | Ernie M Ferrales | — | (714) 715 8950 | GC, remodel, ADU | Westminster · Orange County | — | — |
| E M F Fire Solutions | Scott Patrick Galvan | — | (909) 464 8090 | Electricians | Yorba Linda · Orange County | — | — |
| E M H Construction | Edward Michael Harden | — | (714) 412 2121 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| E M P Construction | Eduardo Enrique Puiggros | — | (714) 689 4098 | GC, remodel, ADU | Lake Forest · Orange County | — | — |
| E M P Consultants INC | Michael James Wintheiser | — | (714) 282 8035 | Other | Anaheim Hills · Orange County | — | — |
| E N L Building Service INC | Michael Chulkun Chung | — | (213) 434 9646 | GC, remodel, ADU | Fullerton · Orange County | — | — |
| E O Construction | Eric Jon Olson | eo@eoconstruction.com | (714) 357 2622 | GC, remodel, ADU | Costa Mesa · Orange County | — | — |
| E Osuna Plastering | E Osuna Plastering | — | (949) 661 0857 | Other | San Juan Capstrno · Orange County | — | — |
| E P C C INC | Michael Steven Easton | — | (949) 223 5090 | GC, remodel, ADU | Santa Ana · Orange County | — | — |