| A & M Garage Door & Gate Services | Mizrahi Aviel | — | (424) 306 9352 | Other | Sacramento · Sacramento County | — | — |
| A & M Garage Doors & Gates | Angel Octavio Valencia | — | (818) 269 0138 | Other | Porter Ranch · Los Angeles County | — | — |
| A & M Heating & Air Conditioning | Stephen Shaun Mitchell | — | (626) 359 6637 | HVAC | Monrovia · Los Angeles County | — | — |
| A & M Heating And Air Conditioning | Matthew Ray Ryan | — | (916) 747 5654 | HVAC | Citrus Heights · Sacramento County | — | — |
| A & M Landscaping | Juan Jose Hernandez | — | (310) 487 3228 | GC, remodel, ADU | Inglewood · Los Angeles County | — | — |
| A & M Lath & Plastering INC | Moises Meza Gastelum | — | (510) 332 7629 | Other | Hayward · Alameda County | — | — |
| A & M Master Painters | Mario Alberto Hernandez | — | (310) 621 0719 | Windows, patio, painters | Los Angeles · Los Angeles County | — | — |
| A & M Painting | A & M Painting | — | (530) 567 5354 | Windows, patio, painters | Esparto · Yolo County | — | — |
| A & M Painting & Decorating INC DBA Asm Construction | John Stanley Johnson | — | (949) 412 5969 | GC, remodel, ADU | Orange · Orange County | — | — |
| A & M Painting Co | Alejandro Rafael Solorio-Arias | — | (916) 793 0321 | Windows, patio, painters | Sacramento · Sacramento County | — | — |
| A & M Plumbing | A & M Plumbing | — | (408) 828 6446 | Other | Belmont · San Mateo County | — | — |
| A & M Plumbing | A & M Plumbing | — | (831) 293 3924 | Other | Del Rey Oaks · Monterey County | — | — |
| A & M Plumbing Services | Michael John Herbst | — | (951) 929 2128 | Other | Hemet · Riverside County | — | — |
| A & M Pool Service | Albert Rosario Jr Cerrone | — | (707) 778 0215 | Pool | Petaluma · Sonoma County | — | — |
| A & M Pool Service | Moreno Al | — | (949) 395 5381 | Pool | Oceanside · San Diego County | — | — |
| A & M Pools INC | James Edward Michaud | — | (562) 665 0845 | Pool | La Habra Heights · Los Angeles County | — | — |
| A & M Pressure Washing INC | Patty Mayer | — | (530) 244 4642 | Other | Redding · Shasta County | — | — |
| A & M Professional Painting INC | Fuentes Alejandro Tolentino | — | (619) 805 6494 | Windows, patio, painters | Spring Valley · San Diego County | — | — |
| A & M Pump & Plumbing | William Kenneth Roberts | — | (530) 233 2773 | Other | Alturas · Modoc County | — | — |
| A & M Reinforcing Specialists INC | Kevin William Ardent | — | (619) 334 6608 | Other | Santee · San Diego County | — | — |
| A & M Roofing | Michael Arthur Bonilla | — | (805) 461 3400 | Other roofers | Atascadero · San Luis Obispo County | — | — |
| A & M Sign Corporation | Chavez Alberto | — | (626) 542 3606 | Other | So El Monte · Los Angeles County | — | — |
| A & M Tile Company | Raymond Lee Jr Ausban | — | (209) 481 5929 | Other | Stockton · San Joaquin County | — | — |
| A & M Tree Specialist | Vanesa Acevedo | — | (877) 778 7337 | Tree | Anaheim · Orange County | — | — |
| A & M Well Drilling INC | Dianne Theresa Jar Tweedy | — | (530) 905 0695 | Other | Hornbrook · Siskiyou County | — | — |
| A & M Window And Door Installers INC | Don Meyers | — | (760) 975 6658 | Windows, patio, painters | Escondido · San Diego County | — | — |
| A & N Building Innovations INC | Miguel Angel Amador Tinajero | — | (818) 554 3059 | GC, remodel, ADU | Arleta · Los Angeles County | — | — |
| A & N Construction | Higinio Fidel Olivera | — | (209) 914 4019 | GC, remodel, ADU | Brentwood · Contra Costa County | — | — |
| A & N Gardening And Landscaping | Kitic Ljubo | — | (925) 984 9107 | Windows, patio, painters | Danville · Contra Costa County | — | — |
| A & N Plumbing INC | Antonio Guaracha | — | (831) 637 3873 | HVAC | Hollister · San Benito County | — | — |
| A & N Pools INC | James Kalwin Norris | — | (760) 340 2404 | Pool | Palm Desert · Riverside County | — | — |
| A & N Quality Builders INC | Juan G Agatep | — | (760) 337 9488 | GC, remodel, ADU | El Centro · Imperial County | — | — |
| A & O Construction | Jorge Adan Arreola | admin@aoconstruction.com | (408) 687 2615 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| A & O Construction & Design INC | Kc Hahn | — | (323) 482 4262 | GC, remodel, ADU | Pinon Hills · San Bernardino County | — | — |
| A & O Construction -builders LLC | Adrian Humberto Santana | — | (818) 239 9577 | GC, remodel, ADU | Sherman Oaks · Los Angeles County | — | — |
| A & O Electric | Armando Amado Lopez | — | (323) 846 1540 | Electricians | West Covina · Los Angeles County | — | — |
| A & O Engineering Construction INC | Albert Eugene Allen | — | (714) 915 9135 | Other | Corona · Riverside County | — | — |
| A & O INC | Carlos Alberto Guillen | — | (323) 833 2825 | GC, remodel, ADU | Bell · Los Angeles County | — | — |
| A & O Insulation INC | La Rosa Alejandro De | — | (619) 957 8707 | Other | National City · San Diego County | — | — |
| A & O Struct And Design DBA Cabinetry Woodworks | Madrigal Oscar | — | (619) 654 0217 | GC, remodel, ADU | Chula Vista · San Diego County | — | — |