| Accent Awning | Roberta Margaret Desmarais | — | (714) 708 1386 | Other | Santa Ana · Orange County | — | — |
| Accent Construction Services INC | Dan Ryoichi Yasui | interested@domainmarket.com | (714) 231 9645 | GC, remodel, ADU | Newport Beach · Orange County | — | — |
| Accent Lathing & Plastering | Drew James Gwaltney | — | (714) 299 5115 | Other | Huntington Beach · Orange County | — | — |
| Accent Stairs | Accent Stairs | — | (602) 692 0842 | Other | Costa Mesa · Orange County | — | — |
| Access Electric INC | Spatacean David | — | (714) 689 2310 | Electricians | Tustin · Orange County | — | — |
| Access Electrical & Lighting | Adam Lynn Pearson | — | (949) 364 6063 | Electricians | Mission Viejo · Orange County | — | — |
| Access To Freedom | Richard Alan Mills | — | (949) 472 4900 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| Accion Construction Iron & Windows Mfg | Garcia Ciriaco | — | (714) 972 2806 | GC, remodel, ADU | Santa Ana · Orange County | — | — |
| Accion Electric INC | Martin Trujillo | — | (714) 835 2022 | Electricians | Anaheim · Orange County | — | — |
| Accolade Air INC | Jason Keith Woody | — | (714) 709 6672 | HVAC | Lake Forest · Orange County | — | — |
| Accord Electric Corporation | Bala Daniel | — | (714) 841 5180 | Electricians | Huntington Beach · Orange County | — | — |
| Accu - Tech Construction | Kim Frederick | — | (714) 822 9282 | GC, remodel, ADU | Fullerton · Orange County | — | — |
| Accu Construction INC | Dennis Donghae Yum | — | (714) 641 4730 | GC, remodel, ADU | Tustin · Orange County | — | — |
| Accu Signs & Digital Printing | Accu Signs & Digital Printing | — | (714) 543 4444 | Other | Santa Ana · Orange County | — | — |
| Accu-temp INC | Kirk Steven Vasquez | — | (714) 771 0300 | HVAC | Orange · Orange County | — | — |
| Accubuild Oc | Luis Alberto Diosdado Perez | info@accubuildoc.com | (714) 317 4088 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| Accurate Air Service Co | Edgar Guillermo Aragon | — | (949) 677 0046 | HVAC | Placentia · Orange County | — | — |
| Accurate Comfort Air Conditioning And Heating Corp | Andrew Ryan Chagollan | — | (714) 325 7042 | HVAC | Brea · Orange County | — | — |
| Accurate Door & Glass INC | Adam Edward Fernandez | — | (714) 870 8999 | Windows, patio, painters | Anaheim · Orange County | — | — |
| Accurate Garage Door Repair | Accurate Garage Door Repair | — | (714) 956 8715 | Other | Orange · Orange County | — | — |
| Accurate Industrial Construction INC | Ronald Eugene Field | — | (714) 879 7017 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| Accurate Laminated Products INC | Joshua Maycock Dunn | — | (714) 632 2773 | Other | Anaheim · Orange County | — | — |
| Accurate Plumbing | Accurate Plumbing | — | (714) 585 7779 | Other | Costa Mesa · Orange County | — | — |
| Accurate Plumbing And Drains | Jesse Contreras Gomez | — | (714) 865 2575 | Other | Anaheim · Orange County | — | — |
| Accurate Roofing | Raymond Phillip Cauchois | — | (714) 962 4250 | Other roofers | Garden Grove · Orange County | — | — |
| Accurate Sash & Finish | David Ramirez | — | (714) 742 8788 | Windows, patio, painters | Santa Ana · Orange County | — | — |
| Accurate Solid Surfaces INC | Anthony Val Kozeluh | — | (949) 458 2881 | Other | Irvine · Orange County | — | — |
| Accurate Steel | Accurate Steel | — | (714) 553 8574 | Other | Anaheim · Orange County | — | — |
| Accurate Termite And Pest Control | James Pearse Donnelly | — | (949) 461 3390 | GC, remodel, ADU | Irvine · Orange County | — | — |
| Accurate Window Coverings | Douglas Scott Laneau | — | (949) 588 7002 | Other | Lake Forest · Orange County | — | — |
| Accutec Manufacturing INC | Carlos Manuel Martinez | — | (714) 549 2015 | Other | Santa Ana · Orange County | — | — |
| Accutherm Refrigeration INC | Jeffrey Allen Recker | — | (714) 248 7748 | HVAC | Garden Grove · Orange County | — | — |
| Ace Air Appliance | Ace Air Appliance | — | (949) 388 4388 | HVAC | San Clemente · Orange County | — | — |
| Ace Air Conditioning | Ace Air Conditioning | — | (714) 328 1996 | HVAC | Fullerton · Orange County | — | — |
| Ace Air Controls INC | Jae Hoon Kim | — | (562) 484 4535 | HVAC | Buena Park · Orange County | — | — |
| Ace Aire Air Conditioning & Heating | Eugene Dominguez Montanez | — | (714) 337 2601 | HVAC | Anaheim Hills · Orange County | — | — |
| Ace Builders P C & M DBA Concrete Cutting Services | Ronald Paul Sr Lathrop | — | (714) 307 4070 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| Ace Capital Engineering | Ali Mohammadi | — | (949) 333 9322 | GC, remodel, ADU | Lake Forest · Orange County | — | — |
| Ace Construction | Phillip Kyeongho Ahn | — | (714) 726 1472 | GC, remodel, ADU | Fullerton · Orange County | — | — |
| Ace Construction | James Edwin Kinney | — | (714) 906 0390 | GC, remodel, ADU | Santa Ana · Orange County | — | — |