| Aaj Electric LLC | Jose Luis Suazo | — | (951) 339 6440 | Electricians | Riverside · Riverside County | — | — |
| Aaj Elite Plumbing LLC | Brian Yoneki Matsumoto | — | (619) 832 8138 | Other | Santee · San Diego County | — | — |
| Aak Builders Corp | Daniel Wei An Kwan | — | (415) 336 2793 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Aak Painting Services | Villegas Jonatan Alfonso | — | (909) 961 9055 | Windows, patio, painters | Hesperia · San Bernardino County | — | — |
| Aaleest Usa Construction INC | Mahdi Nourollahi | — | (650) 646 2030 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Aall Fire Protection Services | Edward Raymond Gonsalves | — | (888) 988 0202 | Other | Livermore · Alameda County | — | — |
| Aam Construction And Coating | Alexander Abel Mesa | — | (909) 376 1770 | GC, remodel, ADU | Pomona · Los Angeles County | — | — |
| Aam&jianan LLC | Weian Luo | — | (323) 558 3885 | GC, remodel, ADU | Irvine · Orange County | — | — |
| Aaman Business LLC | Aaman Ashfaq Mani | — | (510) 708 4486 | Other | Pomona · Los Angeles County | — | — |
| Aames Carpet Care INC | Christine Verena Folding | — | (562) 756 7066 | Other | Signal Hill · Los Angeles County | — | — |
| Aames Home Improvement | Brian Reza Ghorban | — | (925) 671 7995 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Aamir Raza | Aamir Raza | — | (909) 591 7441 | GC, remodel, ADU | Chino · San Bernardino County | — | — |
| Aamp Electric | David Michael Schmidt | — | (707) 580 0586 | Electricians | Fairfield · Solano County | — | — |
| Aancs LLC | Aaron Paul Barnhart | — | (415) 726 5450 | Electricians | Huntington Beach · Orange County | — | — |
| Aane Renovation Painting | Aane Renovation Painting | — | (209) 277 3131 | Windows, patio, painters | Turlock · Stanislaus County | — | — |
| Aap Engineering | Antonio Armando Perez | — | (714) 743 2314 | Other | Downey · Los Angeles County | — | — |
| Aapex Construction Group INC | Andrew Hui Wang | — | (626) 757 9705 | GC, remodel, ADU | Walnut · Los Angeles County | — | — |
| Aar General Contractor | Aar General Contractor | — | (510) 812 7815 | GC, remodel, ADU | Hercules · Contra Costa County | — | — |
| Aaramco | Vartanian Aram | — | (818) 400 4561 | GC, remodel, ADU | Glendale · Los Angeles County | — | — |
| Aarav Construction | Sahil Paresh Desai | — | (949) 704 1555 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| Aarc Construction INC | Ramon Bartolome De La Rea | — | (424) 522 6278 | GC, remodel, ADU | Torrance · Los Angeles County | — | — |
| Aarce Building Company | Aaron Villagomez Villagomez | — | (619) 745 9135 | GC, remodel, ADU | Chula Vista · San Diego County | — | — |
| Aard Mechanical INC | Rosa Carina Hinojosa | — | (877) 227 3125 | HVAC | Brea · Orange County | — | — |
| Aardema Electric & Construction Corp | Peter James Aardema | aardemaelectric@yahoo.com | (619) 954 7505 | Electricians | Solana Beach · San Diego County | — | — |
| Aardvark Enterprises INC | Robert Weston Monroe | — | (661) 259 9835 | GC, remodel, ADU | Valencia · Los Angeles County | — | — |
| Aardvark Pool & Spa Experts | Aardvark Pool & Spa Experts | — | (818) 635 2354 | Pool | Van Nuys · Los Angeles County | — | — |
| Aardvark Septic Systems | Kathleen Elsie De Anda | — | (619) 843 1262 | GC, remodel, ADU | Oceanside · San Diego County | — | — |
| Aardvark Woodcraft INC | David Martin O'boyle | — | (510) 565 8225 | Other | Elk Grove · Sacramento County | — | — |
| Aarel Striping And Engineering | Aarel Striping And Engineering | — | (530) 321 1633 | Other | Chico · Butte County | — | — |
| Aarex Group | Amir Moayedi | — | (408) 775 4104 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Aarm Electric | David Humberto Guzman Cortez | — | (949) 418 3979 | Electricians | Carson · Los Angeles County | — | — |
| Aarnav Builders INC | Nari Pahilajrai Ramchandani | — | (510) 325 3650 | Electricians | Danville · Contra Costa County | — | — |
| Aarnio & Sons Cabinets | Aarnio & Sons Cabinets | — | (916) 759 2442 | Other | Sacramento · Sacramento County | — | — |
| Aaron Ackerman Construction | Aaron James Ackerman | — | (831) 809 4922 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Aaron Alt Construction INC | Aaron Joseph Alt | aaronaltconstruction@gmail.com | (714) 499 4922 | Electricians | Anaheim · Orange County | — | — |
| Aaron Alvarado | Aaron Alvarado | — | (424) 200 1103 | Other | Glendora · Los Angeles County | — | — |
| Aaron Anderson | Aaron Anderson | — | (831) 419 2131 | GC, remodel, ADU | Ben Lomond · Santa Cruz County | — | — |
| Aaron Anderson | Aaron Anderson | — | (559) 217 4624 | Windows, patio, painters | Clovis · Fresno County | — | — |
| Aaron Anderson Construction | Aaron Lee Anderson | — | (818) 618 3574 | GC, remodel, ADU | Chatsworth · Los Angeles County | — | — |
| Aaron Andrew Standley | Aaron Andrew Standley | — | (310) 951 3106 | GC, remodel, ADU | Torrance · Los Angeles County | — | — |