| A K Electric | Andrew Mark Katsch | — | (805) 304 8456 | Electricians | Simi Valley · Ventura County | — | — |
| A K Electric | Kvesic Ante | — | (714) 726 5819 | Electricians | Fountain Valley · Orange County | — | — |
| A K Electric | Boldizsar Akos | — | (714) 420 5227 | Electricians | Portola Hills · Orange County | — | — |
| A K Electric A Partnership | Vartan Mnayan | — | (818) 331 4618 | Electricians | Tujunga · Los Angeles County | — | — |
| A K Electric INC | Andrey I Kyvyrzhik | — | (916) 429 5725 | Electricians | Orangevale · Sacramento County | — | — |
| A K Enterprises | Kastell-wehrhagen Achim | — | (916) 768 4330 | GC, remodel, ADU | Orangevale · Sacramento County | — | — |
| A K Flooring | A K Flooring | — | (916) 837 1695 | Other | Orangevale · Sacramento County | — | — |
| A K Garage Door Doctor INC | Alexander Noboru Kawano | — | (310) 904 9425 | Other | Buena Park · Orange County | — | — |
| A K General Construction INC | Andrew W Krzyz | — | (858) 344 7687 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| A K General Contractors INC | Karimian Abbas | — | (818) 207 4400 | GC, remodel, ADU | Woodland Hills · Los Angeles County | — | — |
| A K Glass Works INC | Armen Kaptryan | armen@akglassworks.com | (559) 999 4838 | Windows, patio, painters | Fresno · Fresno County | — | — |
| A K H Construction Company | Angela K Hui | — | (626) 888 7767 | GC, remodel, ADU | Rowland Heights · Los Angeles County | — | — |
| A K Home Improvement INC | Kustura Anatoliy | — | (415) 279 1426 | GC, remodel, ADU | Daly City · San Mateo County | — | — |
| A K International | A K International | — | (818) 648 1003 | Other | Van Nuys · Los Angeles County | — | — |
| A K Landscaping Maintenance INC | Miguel Angel Arechiga | — | (760) 347 9747 | Windows, patio, painters | Palm Desert · Riverside County | — | — |
| A K Lewis Construction Co | Aaron Lewis Katz | — | (707) 357 5674 | GC, remodel, ADU | Elk · Mendocino County | — | — |
| A K M Building & Design INC | Kristian Robert Fenner | — | (323) 391 3160 | Electricians | Santa Monica · Los Angeles County | — | — |
| A K M Construction | Soe Yee Wai Hin | — | (650) 201 2808 | Electricians | Daly City · San Mateo County | — | — |
| A K M Fire INC | Yaakov Azran | — | (818) 343 8208 | Other | Tarzana · Los Angeles County | — | — |
| A K Painting | A K Painting | — | (707) 332 5416 | Windows, patio, painters | Napa · Napa County | — | — |
| A K Pro Construction Corp | Akito Wakamatsu | — | (310) 320 5757 | GC, remodel, ADU | Torrance · Los Angeles County | — | — |
| A K S Enterprises INC | Piara Singh Ghuman | blake.knapik@aksenterprises.com | (559) 303 3616 | GC, remodel, ADU | Kingsburg · Fresno County | — | — |
| A K S Pools | Russell Lee Mc Daniel | — | (760) 802 5677 | Windows, patio, painters | Vista · San Diego County | — | — |
| A Kaplan Construction Co INC | Alan Bruce Kaplan | — | (909) 948 0255 | GC, remodel, ADU | Rancho Cucamonga · San Bernardino County | — | — |
| A Keith INC | Angus Jr Keith | — | (800) 326 1442 | Other roofers | Studio City · Los Angeles County | — | — |
| A L Affordable INC | Anischenko Leonard | — | (209) 863 8101 | HVAC | Modesto · Stanislaus County | — | — |
| A L B Design & Construction | Allan Levoit Baquilar | — | (415) 533 3988 | GC, remodel, ADU | Daly City · San Mateo County | — | — |
| A L B INC | Robert Jr Gonzalez | — | (925) 427 1199 | GC, remodel, ADU | Pittsburg · Contra Costa County | — | — |
| A L Builders INC | Yarin Adi | — | (818) 601 5030 | GC, remodel, ADU | Encino · Los Angeles County | — | — |
| A L C Construction | Anthony Logan Couch | — | (559) 202 6253 | GC, remodel, ADU | Springville · Tulare County | — | — |
| A L C O M M | Aldo Alfredo Sebastian Ceballos | — | (714) 262 9550 | Other | Placentia · Orange County | — | — |
| A L C Services Company | Adam Orren Lewis | — | (925) 800 5736 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| A L Color Painting LLC | Marco Antonio Razon Cervantes | — | (510) 927 8767 | Windows, patio, painters | Castro Valley · Alameda County | — | — |
| A L Construction | Lorenzo Antonio | — | (661) 312 2560 | GC, remodel, ADU | Val Verde · Los Angeles County | — | — |
| A L Construction | Arturo Ramirez Lopez | — | (805) 797 7422 | GC, remodel, ADU | Fillmore · Ventura County | — | — |
| A L Construction | A L Construction | — | (951) 906-2362 | GC, remodel, ADU | San Bernardino · San Bernardino County | — | — |
| A L Construction Corp | Alan Lanh Dang | — | (510) 505 0643 | GC, remodel, ADU | Newark · Alameda County | — | — |
| A L Contractors INC DBA A L Painting And Decorating | John Curtis Leach | — | (310) 536 9744 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| A L Custom Woodwork | A L Custom Woodwork | — | (818) 772 7221 | Other | Northridge · Los Angeles County | — | — |
| A L D C O Air | Aldaz Rafael | — | (760) 564 9963 | HVAC | Indio · Riverside County | — | — |