| A 1 Flooring Technicians | Marvin Glen Wilson | — | (916) 306 9113 | GC, remodel, ADU | Sacramento · Sacramento County | — | — |
| A 1 General Building | A 1 General Building | — | (510) 712 5854 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| A 1 Granite + Stone INC DBA A 1 Granite Stone Tile | Jose Coronado | — | (714) 366 5034 | Other | Lake Elsinore · Riverside County | — | — |
| A 1 Landscaping | Eddie Le | — | (209) 662 1379 | Windows, patio, painters | Lathrop · San Joaquin County | — | — |
| A 1 Noble Plumbing | A 1 Noble Plumbing | — | (559) 232 9590 | Other | Fresno · Fresno County | — | — |
| A 1 Nor/cal & Son | A 1 Nor/cal & Son | — | (408) 264 1405 | Other roofers | San Jose · Santa Clara County | — | — |
| A 1 On Track Sliding Door Repair And Installation INC | Louis David Floyd | — | (408) 866 0267 | Other | Campbell · Santa Clara County | — | — |
| A 1 Painting | A 1 Painting | — | (530) 244 2595 | Windows, patio, painters | Redding · Shasta County | — | — |
| A 1 Painting | A 1 Painting | — | (916) 549 8774 | Windows, patio, painters | West Sacramento · Yolo County | — | — |
| A 1 Precision Builders Management INC | Quincy Douglas Sr Carlisle | — | (323) 202 6232 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| A 1 Quality Flooring | A 1 Quality Flooring | — | (916) 821 3329 | Other | Rocklin · Placer County | — | — |
| A 1 Quality Restoration INC DBA Servpro Of Downtown Long Beach | Hayssam Muhamad Tohme | — | (562) 591 1788 | GC, remodel, ADU | Long Beach · Los Angeles County | — | — |
| A 1 Telecom | A 1 Telecom | — | (831) 905 2478 | Other | Salinas · Monterey County | — | — |
| A 1 Woodwork | A 1 Woodwork | — | (916) 320 3032 | Other | Orangevale · Sacramento County | — | — |
| A 1 World Class Painting | A 1 World Class Painting | — | (925) 497 6850 | Windows, patio, painters | Concord · Contra Costa County | — | — |
| A 2 D Painting | A 2 D Painting | — | (949) 395 5412 | Windows, patio, painters | Weed · Siskiyou County | — | — |
| A 2 M Contractors INC | Gregg Joseph Sharp | — | (619) 395 1348 | Other roofers | Chula Vista · San Diego County | — | — |
| A 2 Z Builders | Hector Gerardo Perez Coello | — | (408) 500 7631 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| A 2 Z Construct INC | Charlene Estelle Jafari | estimates@azconstruct.com | (949) 283 5179 | GC, remodel, ADU | Rancho Santa Margarita · Orange County | — | — |
| A 2 Z Construction | Tin Quang Pham | — | (408) 460 0745 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| A 2 Z Construction & Maintenance LLC | Stoney Sparky Mccullough | — | (209) 496 7735 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| A 2 Z Construction Services | Scott Allen Phelps | — | (949) 788 9227 | GC, remodel, ADU | Irvine · Orange County | — | — |
| A 2 Z Electric | Zamora Robert | — | (310) 220 4683 | Electricians | Torrance · Los Angeles County | — | — |
| A 2 Z Garage Doors | A 2 Z Garage Doors | — | (209) 652 2686 | Other | Modesto · Stanislaus County | — | — |
| A 2 Z Home Builders INC | Jeffrey Ruiz | — | (951) 453 1889 | GC, remodel, ADU | Perris · Riverside County | — | — |
| A 2 Z Plumbing | A 2 Z Plumbing | — | (909) 758 6237 | Other | Ontario · San Bernardino County | — | — |
| A 2 Z Plumbing Services INC | Daniel Perry Moller | — | (714) 572 9471 | Other | Placentia · Orange County | — | — |
| A 2 Z Refrigeration Company | Zoltan Szabo Sarkadi | — | (818) 400 4024 | HVAC | Woodland Hills · Los Angeles County | — | — |
| A 2 Z Technologies INC | Kenneth Jordan Ricks | — | (661) 322 8408 | Electricians | Bakersfield · Kern County | — | — |
| A 24 Electric Co | Weisberg Edward | — | (415) 664 6611 | Electricians | San Francisco · San Francisco County | — | — |
| A 4 Painting Plus | Alberto Arturo Lara | — | (916) 261 8195 | Windows, patio, painters | Sacramento · Sacramento County | — | — |
| A 5 Computer Services | Ronald Clayton Davis | — | (619) 987 9309 | Other | El Cajon · San Diego County | — | — |
| A 5 Custom Builders INC | Matthew Anthony Avila | — | (559) 967 4599 | GC, remodel, ADU | Visalia · Tulare County | — | — |
| A A & T Communications INC | Joseph Charles Augello | — | (707) 528 6812 | Other | Santa Rosa · Sonoma County | — | — |
| A A - W L Const & Electric | Lam Warren | — | (626) 478 5001 | Electricians | La Puente · Los Angeles County | — | — |
| A A A - Pro 1 Rain Gutters | Gregory James Martin | — | (760) 445 8762 | Other | San Marcos · San Diego County | — | — |
| A A A - Value Window Services INC | Jimin Chen | — | (626) 962 7568 | GC, remodel, ADU | Duarte · Los Angeles County | — | — |
| A A A A Painting | A A A A Painting | — | (530) 798 3343 | GC, remodel, ADU | Altaville · Calaveras County | — | — |
| A A A Advanced Garage Door Services | Munir Mohamed Latif | — | (805) 297 7811 | Other | Simi Valley · Ventura County | — | — |
| A A A All Star Construction INC | Dave Cohen | — | (800) 975 5512 | GC, remodel, ADU | Valley Village · Los Angeles County | — | — |