| Aesthetic Custom Building | Aesthetic Custom Building | — | (714) 272 6436 | GC, remodel, ADU | Laguna Hills · Orange County | — | — |
| Aesthetic Engineered Construction | Hassan Hussein Berri | — | (949) 870 5221 | Other | Santa Ana · Orange County | — | — |
| Aesthetic Tile Works | Aesthetic Tile Works | — | (714) 330 8496 | Other | Anaheim · Orange County | — | — |
| Aesthetics Landscape Management | Luis Ramirez | — | (657) 462 9540 | Windows, patio, painters | Anaheim · Orange County | — | — |
| Afa Builders INC | Farzad Khorshidian | — | (818) 470 3074 | GC, remodel, ADU | Irvine · Orange County | — | — |
| Afcon Development INC | Wais Hayat | contact@afcondevelopment.com | (714) 766 1880 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| Aff Group Incorporated | Victor Irineo Euan | — | (800) 233 0445 | Electricians | Fullerton · Orange County | — | — |
| Affinity Property Management INC | Bonnie Hoi Ping Cha Brown | — | (714) 769 6800 | GC, remodel, ADU | Orange · Orange County | — | — |
| Affinity Refrigeration And HVAC Inc. | Dominic Richard Gore | — | (888) 366 2354 | HVAC | Anaheim · Orange County | — | — |
| Affinity Restoration Group INC | Timothy Scott Meadors | — | (714) 317 8070 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| Affirm Electric INC | Michael William Kiefer | — | (949) 264 2679 | Electricians | Santa Ana · Orange County | — | — |
| Affordable Audio Video | Affordable Audio Video | — | (949) 616 0665 | Other | Lake Forest · Orange County | — | — |
| Affordable Coastal Glass INC | Timothy Lee Smith | — | (949) 548 2122 | Windows, patio, painters | Costa Mesa · Orange County | — | — |
| Affordable Elegance Tile Installation | Affordable Elegance Tile Installation | — | (714) 719 0544 | Other | Westminster · Orange County | — | — |
| Affordable Fire Protection LLC | Mikail Mohagheghzadeh | — | (303) 434 7083 | Other | Tustin · Orange County | — | — |
| Affordable Frameless Shower Door INC | Jared Matthew Pigott | — | (800) 495 3236 | Windows, patio, painters | Ladera Ranch · Orange County | — | — |
| Affordable Handyman And Remodel | Steven James Peterman | — | (949) 400 4683 | GC, remodel, ADU | Trabuco Canyon · Orange County | — | — |
| Affordable Hardwood Floors | Pham Paul | — | (714) 657 7131 | GC, remodel, ADU | Westminster · Orange County | — | — |
| Affordable Housing Construction INC | David Simon | — | (714) 650 3310 | GC, remodel, ADU | Westminster · Orange County | — | — |
| Affordable Lighting And Electrical | Jose L Medina | — | (949) 507 0020 | Electricians | Stanton · Orange County | — | — |
| Affordable Luxury Floor Designs | Affordable Luxury Floor Designs | — | (714) 345 0754 | Other | Orange · Orange County | — | — |
| Affordable Painting Repair | Affordable Painting Repair | — | (714) 824 0668 | Windows, patio, painters | Westminster · Orange County | — | — |
| Affordable Plumbing Company Incorporation | Jose Ruiz | — | (949) 510 7305 | Other | Garden Grove · Orange County | — | — |
| Affordable Pool Service | Grant Jeffrey Hucko | — | (562) 947 5998 | Pool | La Habra · Orange County | — | — |
| Affordable Quality Garage Doors INC | John Louis Pascarella | — | (714) 630 1565 | Other | Fullerton · Orange County | — | — |
| Affordable Quality Remodeling Corporation | Khanaman Saeed | — | (714) 751 2222 | GC, remodel, ADU | Irvine · Orange County | — | — |
| Afinarte Restoration INC DBA Afinarte Restoration | Rodolfo Alberto Verdugo | — | (949) 872 3294 | GC, remodel, ADU | Costa Mesa · Orange County | — | — |
| Afsaneh Enterprises INC DBA Bcs Consultants | Afsaneh Rajab | — | (949) 333 1007 | Other | Irvine · Orange County | — | — |
| After-hours Electric | Randall Edward Williams | contact@sansoxygen.com | (714) 396 2188 | Electricians | Laguna Hills · Orange County | — | — |
| Ag Construction | Arias Daniel | — | (714) 655 9575 | HVAC | Huntington Beach · Orange County | — | — |
| Ag Construction | Amirhossein Ghodoosi | — | (949) 402 1647 | GC, remodel, ADU | Irvine · Orange County | — | — |
| Agape Painting Company | Michelle Jene Baurmann | — | (949) 400 5883 | Windows, patio, painters | Laguna Beach · Orange County | — | — |
| Agape Painting Service | Hak Myoung Lim | — | (949) 303 8824 | Windows, patio, painters | Anaheim · Orange County | — | — |
| Agc Paints INC | Joseph Ezzat Girgis Ghobrial | — | (949) 994 1106 | Windows, patio, painters | Tustin · Orange County | — | — |
| Age Of Construction INC | Abtin Akhlagh | info@ageofconstruction.com | (949) 750 9025 | GC, remodel, ADU | Aliso Viejo · Orange County | — | — |
| Aggie Construction Co INC | Morteza Aghaie | team@latofonts.com | (310) 713 3132 | GC, remodel, ADU | Irvine · Orange County | — | — |
| Aglio Construction | Frank Alfred Jr Aglio | — | (888) 679 7774 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| Ags Services INC | Gomez Alfred | — | (714) 620 4356 | HVAC | Rancho Santa Margarita · Orange County | — | — |
| Agui Home Inspection | Agui Home Inspection | agui@aguihomeinspection.com | (714) 787-6134 | Inspectors | Irvine · Orange County | — | — |
| Aguilar Hardscape | Vazquez Daniel Aguilar | — | (657) 438 9798 | Windows, patio, painters | Orange · Orange County | — | — |