| A A General Contracting | Adourian Adour | — | (310) 649 4649 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| A A Glass Shop | A A Glass Shop | — | (831) 757 6574 | Windows, patio, painters | Salinas · Monterey County | — | — |
| A A Glass Shop INC | Robert Allen Weitzel | robert@aaglassshop.com | (530) 885-7211 | GC, remodel, ADU | Loomis · Placer County | — | — |
| A A Glazing Company INC | Ayub Adil | — | (562) 452 9464 | Windows, patio, painters | Corona · Riverside County | — | — |
| A A Gonzalez Incorporated | Aida Araceli Lepe | — | (818) 367 2242 | GC, remodel, ADU | San Fernando · Los Angeles County | — | — |
| A A Greco INC | Anthony Albert Greco | — | (310) 678 9247 | GC, remodel, ADU | San Marino · Los Angeles County | — | — |
| A A Guaranteed Electric | Jacob Capril Aaron | — | (209) 281 7600 | Electricians | Ceres · Stanislaus County | — | — |
| A A Heating And A/c | A A Heating And A/c | — | (650) 892 9009 | HVAC | Daly City · San Mateo County | — | — |
| A A I C Construction | Adib Salem Elnabbout | — | (562) 228 9390 | GC, remodel, ADU | Corona · Riverside County | — | — |
| A A Iron Co | Adam Alan Warren | — | (818) 744 3390 | Other | Sylmar · Los Angeles County | — | — |
| A A Ironco | A A Ironco | — | (818) 744 3390 | Other | Sylmar · Los Angeles County | — | — |
| A A J INC | David Allen Moritz | — | (818) 406 2115 | GC, remodel, ADU | Azusa · Los Angeles County | — | — |
| A A Johnson & Son INC | Lawrence Neldam Twomey | — | (510) 658 9796 | Other | Oakland · Alameda County | — | — |
| A A L Construction | Anthony Conrad Munoz | — | (916) 494 1064 | GC, remodel, ADU | Citrus Heights · Sacramento County | — | — |
| A A L S Landscape INC | Anthony Albiero | — | (909) 631 7323 | Windows, patio, painters | Chino · San Bernardino County | — | — |
| A A Landscaping | A A Landscaping | — | (760) 710 7058 | Windows, patio, painters | Escondido · San Diego County | — | — |
| A A Landscaping | A A Landscaping | — | (661) 946 1419 | Windows, patio, painters | Lancaster · Los Angeles County | — | — |
| A A M Maintenance And Plumbing | Alfredo Aguirre Marron | — | (661) 978 3510 | Other | Bakersfield · Kern County | — | — |
| A A Martin | A A Martin | — | (909) 291 5554 | Electricians | Rancho Cucamonga · San Bernardino County | — | — |
| A A Masonry | Alfredo Alvidrez | — | (760) 360 7388 | Other | Palm Desert · Riverside County | — | — |
| A A Max Quality Construction | Antonio Marco Aguilar | — | (760) 844 4045 | GC, remodel, ADU | Thousand Palms · Riverside County | — | — |
| A A Napiwocki Construction | Arthur Alex Napiwocki | — | (818) 957 3985 | GC, remodel, ADU | La Crescenta · Los Angeles County | — | — |
| A A Office Equipment Co INC | John Charles Procita | — | (510) 782 6110 | Other | Hayward · Alameda County | — | — |
| A A Ok Garage Door Sales & Service | Jerome Charles Regner | — | (858) 578 4130 | Other | San Diego · San Diego County | — | — |
| A A P M W C INC DBA All American Powerwash | Monte Wayne Cobb | — | (714) 315 0271 | Other | Huntington Beach · Orange County | — | — |
| A A P T Construction Co | Chan Chi Chiang | — | (510) 621 3673 | Electricians | San Francisco · San Francisco County | — | — |
| A A Paint & Custom Finishes INC | Kimberly Rose Gonzales | — | (949) 458 8010 | Windows, patio, painters | Laguna Hills · Orange County | — | — |
| A A Peter Floor Sanding INC | Kevin Thanh Nguyen | — | (916) 387 8186 | Other | Sacramento · Sacramento County | — | — |
| A A Phone & Wire Co | Santos Efraim | — | (818) 314 1425 | Other | Northridge · Los Angeles County | — | — |
| A A Prestige Stone INC | Aleksey Aleksandrovi Pasechnik | aaprestigestone@gmail.com | (760) 917 8453 | Other | Vista · San Diego County | — | — |
| A A Rocha Construction INC | Anthony Arthur Rocha | — | (949) 328 9270 | GC, remodel, ADU | Irvine · Orange County | — | — |
| A A Technology & Electric Services | Mosco Francisco | — | (323) 343 8726 | Electricians | Lancaster · Los Angeles County | — | — |
| A Able American Contractor | A Able American Contractor | — | (408) 358 3329 | Electricians | Los Gatos · Santa Clara County | — | — |
| A Able Locksmith INC | Paul Nhutminh Nguyen | — | (408) 246 6868 | Other | Milpitas · Santa Clara County | — | — |
| A Ablution Pool Service & Repair | Gary Lee Diaz | — | (559) 905 8011 | Pool | Fresno · Fresno County | — | — |
| A Absolute Construction Welding INC | Todd Matthew Wood | — | (619) 212 5473 | Other | Lakeside · San Diego County | — | — |
| A Access Automation And Gate | A Access Automation And Gate | — | (619) 443 4283 | GC, remodel, ADU | Lakeside · San Diego County | — | — |
| A Accurate O H Door | A Accurate O H Door | — | (831) 722 1234 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| A Air Heating And Air Conditioning | Faris Fuad Arabo | — | (619) 922 2442 | HVAC | El Cajon · San Diego County | — | — |
| A Aleshin's Construction | Anton Alekseyevich Aleshin | — | (559) 250 3658 | GC, remodel, ADU | Foster City · San Mateo County | — | — |