| Arbor West Tree Surgeons INC | Eugene Donald Schwartz | — | (619) 661 5001 | Windows, patio, painters | San Diego · San Diego County | — | — |
| Arborcare Tree Care | Arborcare Tree Care | — | (760) 877 0498 | Tree | Escondido · San Diego County | — | — |
| Arborpoint Tree Care Services LLC | Jorge Luis Mondragon | — | (619) 277 9220 | Windows, patio, painters | Ramona · San Diego County | — | — |
| Arbour Electric | David Leo Arbour | — | (619) 646 4634 | Electricians | San Diego · San Diego County | — | — |
| Arc Construction & Engineering INC | Sergio Salinas | jcayala@traycons.com | (858) 722 7785 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Arc Demolition & Concrete Cutting | Arc Demolition & Concrete Cutting | — | (714) 863 4477 | Other | Oceanside · San Diego County | — | — |
| Arc Design Industries DBA Arc Design Landscape | Cale Raymond Abramson | — | (619) 768 5680 | Windows, patio, painters | Santee · San Diego County | — | — |
| Arc Power Solutions INC | Samuel Gregory Tarantino | — | (619) 228 9553 | Electricians | San Diego · San Diego County | — | — |
| Arca Painting | Anthony Iram Arellano | — | (619) 781 6122 | Windows, patio, painters | Chula Vista · San Diego County | — | — |
| Arcadia Building Solutions | Arcadia Building Solutions | — | (619) 202 7400 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Arce Builders INC DBA Arce | Michael Lewis Arce | contact@claycoelectric.org | (619) 750 9087 | Electricians | Lakeside · San Diego County | — | — |
| Arce Custom Cabinets INC | Armando Arce | — | (619) 781 8160 | Other | Lakeside · San Diego County | — | — |
| Arce Painting | Arce Painting | — | (760) 270 1675 | Windows, patio, painters | San Marcos · San Diego County | — | — |
| Arce Tree Service | Jose Salvador Arce | — | (619) 971 1258 | Tree | Lakeside · San Diego County | — | — |
| Arcelectric INC | Pedro William Arce | arcelectric.cv@gmail.com | (619) 843 3877 | Electricians | Chula Vista · San Diego County | — | — |
| Arch 2 Build INC | Tuan Minh Nguyen | — | (619) 307 3216 | GC, remodel, ADU | San Marcos · San Diego County | — | — |
| Arch Construction | Sohyl Honavar Mahallati | — | (949) 291 1087 | GC, remodel, ADU | Carlsbad · San Diego County | — | — |
| Archangel Electric INC | Angel Salvador Bernal | buildzoomsupport@blockrenovation.com | (619) 792 0297 | Electricians | Lakeside · San Diego County | — | — |
| Archer Power Protection | John Valentino Jr Mendoza | — | (619) 908 0211 | Electricians | Valley Center · San Diego County | — | — |
| Archibald Sheet Metal INC | Robert Scott Archibald | — | (619) 441 9100 | Other roofers | Lakeside · San Diego County | — | — |
| Archie Harrison Irion | Archie Harrison Irion | — | (760) 594 0838 | Other | Escondido · San Diego County | — | — |
| Archipelago Development INC | Mark Edward Benjamin | guy@infinitydesignbuild.com | (858) 699 6272 | GC, remodel, ADU | Rancho Santa Fe · San Diego County | — | — |
| Archisects LLC | David Scott Sindelar | — | (619) 887 0931 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Archistructure Building Contractors | Gregory Lawrence Jones | — | (818) 618 2874 | GC, remodel, ADU | Oceanside · San Diego County | — | — |
| Architectural Construction And Design | Jeffrey Harold Rymer | — | (760) 429 3599 | GC, remodel, ADU | Carlsbad · San Diego County | — | — |
| Architectural Development & Construction | Christopher Cardwell Hamilton | — | (619) 726 6519 | GC, remodel, ADU | Carlsbad · San Diego County | — | — |
| Architectural Millwork Solutions INC | Ricardo Enrique Alcantara | — | (760) 510 6440 | Other | Vista · San Diego County | — | — |
| Arcon Homes INC | Julio George Jr Araujo | — | (619) 429 5885 | GC, remodel, ADU | Coronado · San Diego County | — | — |
| Arcstone Builders INC | Octavian Scutelnicu | info@arcstonebuilders.com | (951) 296 7475 | GC, remodel, ADU | Escondido · San Diego County | — | — |
| Arctek Electric INC | Bryan Alejandro Rodriguez Guzman | — | (424) 827 7737 | Electricians | San Diego · San Diego County | — | — |
| Arctic Airflow Heating & Air Conditioning INC | Gerardo Nava | gerry@arcticairflow.com | (858) 327 0699 | HVAC | San Diego · San Diego County | — | — |
| Are Specialist Gate Openers | Are Specialist Gate Openers | — | (760) 576 9681 | Other | Oceanside · San Diego County | — | — |
| Arecon INC | Benjamin Roger Arellanez | — | (619) 644 5746 | Other | Santee · San Diego County | — | — |
| Arenas Contracting Corp | Arenas Balbuena Felipe | — | (619) 368 9470 | GC, remodel, ADU | El Cajon · San Diego County | — | — |
| Arend Brouwer Electrical Contracting INC | Arend Jan Brouwer | eddie.haro@electricare.com | (760) 518 3967 | Electricians | Escondido · San Diego County | — | — |
| Arendt Electric | Chad Edward Arendt | — | (760) 845 5678 | Electricians | San Diego · San Diego County | — | — |
| Arevalos General Contracting INC | Juan Andres Arevalos | guy@infinitydesignbuild.com | (619) 646 2954 | GC, remodel, ADU | Chula Vista · San Diego County | — | — |
| Argent Plumbing | Argent Plumbing | — | (619) 366 2130 | Other | San Diego · San Diego County | — | — |
| Argo Performance Ltd | Jason Richard Mc Gehee | buildzoomsupport@blockrenovation.com | (760) 607 3500 | HVAC | San Diego · San Diego County | — | — |
| Ari's Remodeling | Jesus Diego Ortega Gonzalez | info@arisremodeling.com | (760) 704 3260 | GC, remodel, ADU | Vista · San Diego County | — | — |