| A&j Outdoor Solutions | Dean William Henninger | — | (510) 221 7246 | GC, remodel, ADU | Pinole · Contra Costa County | — | — |
| A&j Roofing INC | Reyes Benito Jimenez | — | (714) 925 5056 | Other roofers | Colton · San Bernardino County | — | — |
| A&j Technologies | Ronny Estuardo Cifuentes Lopez | — | (323) 571 8506 | Electricians | Los Angeles · Los Angeles County | — | — |
| A&j Top Construction INC | Brambila Isamar Jimenez | — | (209) 596 8521 | GC, remodel, ADU | Turlock · Stanislaus County | — | — |
| A&j's Professional Roofing | Jaime Lucio Jr Moreno | info@christianroofing.com | (619) 274 6130 | Other roofers | San Diego · San Diego County | — | — |
| A&k Welding | Jesus Manuel Armenta | — | (424) 200 7356 | Other | Lawndale · Los Angeles County | — | — |
| A&l General Construction INC | Luis Alberto Aquino Chavez | — | (323) 901 0314 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| A&l Landscape & Maintenance INC | Abel Hugo Arreola | — | (760) 275 8036 | Windows, patio, painters | Thousand Palms · Riverside County | — | — |
| A&l Systems LLC | Hector Garcia | — | (877) 912 7483 | Electricians | Ontario · San Bernardino County | — | — |
| A&m Concrete | Antonio Torres-Silva | — | (760) 522 7723 | Other | Escondido · San Diego County | — | — |
| A&m Construction & Development INC | Alfred Chungto Lee | — | (415) 309 3623 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| A&m Construction & Remodeling LLC | Ashley Weiping Lin | — | (207) 415 0247 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| A&m Construction And Consulting LLC | Anthony Michael Perez | — | (626) 241 6820 | GC, remodel, ADU | La Verne · Los Angeles County | — | — |
| A&m Custom Home Construction INC | Mahmood Nikoomanzar | — | (650) 447 9032 | GC, remodel, ADU | Cupertino · Santa Clara County | — | — |
| A&m Custom Windows | Alejandro Martinez | — | (619) 781 5224 | Windows, patio, painters | San Diego · San Diego County | — | — |
| A&m Painting & Decorating INC | Mandegari Amirshahin | — | (949) 412 5969 | Windows, patio, painters | Orange · Orange County | — | — |
| A&m Precise Drywall LLC | Maryann Lemus Munoz | — | (408) 833 4592 | Other | San Jose · Santa Clara County | — | — |
| A&m Rehab Construction INC | Macias Alberto | — | (619) 805 6027 | GC, remodel, ADU | Chula Vista · San Diego County | — | — |
| A&m Roofing And Gutters | David Allen Lammer | — | (805) 294 3268 | Other roofers | Santa Barbara · Santa Barbara County | — | — |
| A&m Specialized Coatings INC | Isidro Angulo-Vidana | — | (866) 858 4963 | Windows, patio, painters | Spring Valley · San Diego County | — | — |
| A&n Coastal Hauling | Fernando Joey Pasqual | — | (619) 647 8145 | Other | Vista · San Diego County | — | — |
| A&n Landscaping INC | Noe Ramos | — | (909) 658 4255 | Windows, patio, painters | Highland · San Bernardino County | — | — |
| A&n Mechanical INC | Pedro Jesus Alba Nevado | — | (209) 281 9605 | HVAC | Modesto · Stanislaus County | — | — |
| A&o Floor Coverings | Juan Carlos Ortiz | — | (831) 348 1307 | Other | Madera · Madera County | — | — |
| A&p Crane Solutions Corp | Victor Alfonso Perez Arevalo | — | (818) 423 1753 | Other | Panorama City · Los Angeles County | — | — |
| A&r Automation INC | Abraham Eini | — | (213) 320 0214 | Electricians | Studio City · Los Angeles County | — | — |
| A&r Builder Pro | Victor Alfonso Rivera | — | (925) 518 4079 | GC, remodel, ADU | Antioch · Contra Costa County | — | — |
| A&r Concrete | Ricardo Virgen | — | (505) 480 7725 | Other | Hayward · Alameda County | — | — |
| A&r Electrical Services INC | Christopher Javier Avila Ruano | — | (650) 995 4520 | Electricians | Half Moon Bay · San Mateo County | — | — |
| A&r Mechanical INC DBA A&r Building Solutions | Alberto Arturo Nunez | — | (619) 302 5959 | HVAC | Escondido · San Diego County | — | — |
| A&r Quality Construction INC | Victor Manuel Bonilla Perez | arqualityconst@gmail.com | (949) 243 4177 | GC, remodel, ADU | Lake Forest · Orange County | — | — |
| A&s Communications INC | Edwin Porfirio Hermosilla | — | (818) 402 5014 | GC, remodel, ADU | Palmdale · Los Angeles County | — | — |
| A&s Construction INC | Steven Jacob Stoker | — | (909) 239 1968 | Other | Chino · San Bernardino County | — | — |
| A&s Low Voltage Security Services | Anthony Salgado Jr Urias | — | (661) 437 0807 | Alarm and generators | Bakersfield · Kern County | — | — |
| A&s Plumbing | Alberto Carlos Vazquez | — | (760) 822 2279 | Other | Temecula · Riverside County | — | — |
| A&s Refrigeration INC | Jose Armando Flores Arevalo | — | (951) 743 8875 | HVAC | Perris · Riverside County | — | — |
| A&s Structural Force Co | Barajas Jorge Cisneros | — | (510) 634 6611 | Other | Newark · Alameda County | — | — |
| A&s Structural Steel INC | Alejandro Jr Gutierrez | — | (909) 775 2461 | Other | Phelan · San Bernardino County | — | — |
| A&t Heating Cooling | A&t Heating Cooling | — | (714) 383 0303 | HVAC | Westminster · Orange County | — | — |
| A&t Painting | Yunusov Timur | — | (818) 665 6684 | Windows, patio, painters | Chatsworth · Los Angeles County | — | — |