| A + Plus Sprinklers | A + Plus Sprinklers | — | (760) 419 8752 | Windows, patio, painters | Carlsbad · San Diego County | — | — |
| A + Pool & Spa Service & Repair | Phillip Kenneth Miller | — | (916) 955 7566 | Pool | Elk Grove · Sacramento County | — | — |
| A + Superior Sanitation INC | Anthony A Gasinski | — | (661) 269 0283 | Other | Acton · Los Angeles County | — | — |
| A + Sustainable Landscape | A + Sustainable Landscape | — | (661) 202 4003 | Windows, patio, painters | Palmdale · Los Angeles County | — | — |
| A + Tile | A + Tile | — | (916) 717 0957 | Other | Sacramento · Sacramento County | — | — |
| A + Tree Service | Jason Matthew Clausing | — | (831) 566 4145 | Tree | Felton · Santa Cruz County | — | — |
| A + Tree Service | Jose Luis Pacheco | — | (619) 647 5048 | Tree | Spring Valley · San Diego County | — | — |
| A + Wood Flooring Solution | A + Wood Flooring Solution | — | (510) 759 5466 | Other | San Leandro · Alameda County | — | — |
| A - 1 American Construction Services INC | Rene Robert Dominguez | — | (818) 577 5201 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| A - 1 Apartment Supply INC | Charles Christopher Grimmett | — | (714) 754 1208 | Other | Fountain Valley · Orange County | — | — |
| A - 1 Apex Plumbing INC | Avi Gabay | — | (818) 344 3342 | Other | Reseda · Los Angeles County | — | — |
| A - 1 Building Solutions INC | Tracy Lynn Armintrout | — | (831) 763 0563 | GC, remodel, ADU | Freedom · Santa Cruz County | — | — |
| A - 1 Cabinets | A - 1 Cabinets | — | (707) 678 1551 | Other | Dixon · Solano County | — | — |
| A - 1 Carpets | A - 1 Carpets | — | (559) 285 9338 | Other | Fresno · Fresno County | — | — |
| A - 1 Certified Electric INC | Zafarian Henrik | — | (818) 974 9315 | Electricians | Glendale · Los Angeles County | — | — |
| A - 1 Chimney INC | Martin Peter Serrano | — | (916) 561 0359 | Other | Elk Grove · Sacramento County | — | — |
| A - 1 Concrete & Construction INC | Pascual Humberto Campos Rodarte | — | (626) 523 5222 | GC, remodel, ADU | Azusa · Los Angeles County | — | — |
| A - 1 Construction | Gary Darnell Scanlon | — | (818) 709 4341 | GC, remodel, ADU | Chatsworth · Los Angeles County | — | — |
| A - 1 Construction | Robert Warren Vladyka | — | (925) 876 2464 | GC, remodel, ADU | Portola · Plumas County | — | — |
| A - 1 Crane Service | Richard Le Roy Van Cleave | — | (530) 347 6947 | Other | Cottonwood · Shasta County | — | — |
| A - 1 Door | A - 1 Door | — | (760) 995 6621 | Other | Victorville · San Bernardino County | — | — |
| A - 1 Drilling & Pump INC | Michael Lawrence Clift | — | (559) 690 4747 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| A - 1 Drywall | A - 1 Drywall | — | (805) 598 3378 | Other | Santa Maria · Santa Barbara County | — | — |
| A - 1 Drywall LLC | Villa Christian | — | (510) 969 9255 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| A - 1 Electric | Jose Luis Sr Esparza | — | (559) 734 2748 | Electricians | Visalia · Tulare County | — | — |
| A - 1 Electrical Contractor INC | Sukhveer Singh | — | (916) 717 5968 | Electricians | Mountain House · San Joaquin County | — | — |
| A - 1 Floor Covering Co | Stanley Michael Levy | — | (323) 938 3716 | Other | Los Angeles · Los Angeles County | — | — |
| A - 1 Garage Doors | A - 1 Garage Doors | — | (831) 818 1527 | Other | Watsonville · Santa Cruz County | — | — |
| A - 1 Garage Doors & Repairs | Jeffrey Joseph Mccarthy | — | (909) 355 1376 | Other | Rancho Cucamonga · San Bernardino County | — | — |
| A - 1 Glass Co | Debra Lynne Stafford | — | (209) 522 1172 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| A - 1 Hauling | A - 1 Hauling | — | (650) 270 5746 | Other | South San Francisco · San Mateo County | — | — |
| A - 1 Home Enhancers | A - 1 Home Enhancers | — | (916) 955 7176 | GC, remodel, ADU | Citrus Heights · Sacramento County | — | — |
| A - 1 Home Repairs INC | Mutahir Ali | — | (408) 775 1304 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| A - 1 Larkin & Son | Kevin Joseph Larkin | — | (415) 827 9373 | Windows, patio, painters | Lucerne · Lake County | — | — |
| A - 1 National Fence | Victor Villarreal Sr Chapa | — | (559) 498 6506 | Other | Fresno · Fresno County | — | — |
| A - 1 Pavement Marking Company INC | Mark Edward Andrews | — | (916) 224 3147 | Other | Rancho Murrieta · Sacramento County | — | — |
| A - 1 Performance Rooter & Plumbing | Carl Scott Thomas | — | (562) 420 6458 | Other | Lakewood · Los Angeles County | — | — |
| A - 1 Planet Products INC | Dante Braz Queiroz | — | (510) 237 0008 | Other | Richmond · Contra Costa County | — | — |
| A - 1 Plumber | A - 1 Plumber | — | (760) 242 4737 | Other | Apple Valley · San Bernardino County | — | — |
| A - 1 Plumbing & Rooter INC | Shmuel Karpman | — | (818) 974 3344 | Other | La Crescenta · Los Angeles County | — | — |