| Abc General Contractor INC | Travis Alan Brozowski | — | (619) 239 3428 | GC, remodel, ADU | El Cajon · San Diego County | — | — |
| Abc Heating & Air | Robert Charles Sanford | — | (619) 599 8223 | HVAC | San Diego · San Diego County | — | — |
| Abc Heating & Air Conditioning | Abc Heating & Air Conditioning | — | (619) 504 8116 | HVAC | Lakeside · San Diego County | — | — |
| Abc Home Improvement | Abc Home Improvement | — | (760) 497 0670 | GC, remodel, ADU | Escondido · San Diego County | — | — |
| Abc Plumbing | Abc Plumbing | john@abcplumbing.com | (760) 207 7003 | Other | San Marcos · San Diego County | — | — |
| Abc Plus | Abc Plus | — | (858) 864 4789 | HVAC | Chula Vista · San Diego County | — | — |
| Abco Plumbing & Leak Detection | Abco Plumbing & Leak Detection | — | (858) 386 6856 | Other | Escondido · San Diego County | — | — |
| Abco Vinyl Pool Repair | Abco Vinyl Pool Repair | — | (619) 508 1525 | Pool | La Mesa · San Diego County | — | — |
| Abdolreza Banan | Abdolreza Banan | — | (619) 756 2939 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Abe's Pool Service | Abe Leroy Espinoza | — | (619) 571 6104 | Pool | Spring Valley · San Diego County | — | — |
| Abel Guzman | Abel Guzman | abelguzman777@gmail.com | (619) 381 8555 | Windows, patio, painters | San Diego · San Diego County | — | — |
| Abel Reyes | Abel Reyes | — | (760) 803 1311 | Other | Escondido · San Diego County | — | — |
| Abel Solis Construction | Solis Abel | — | (619) 571 6875 | GC, remodel, ADU | San Ysidro · San Diego County | — | — |
| Abel's Custom Sheet Metal | Abel's Custom Sheet Metal | — | (858) 688 4923 | Other | Ramona · San Diego County | — | — |
| Abi Construction And Remodel INC | Estrada Israel Ibarra | info@modern-remodeling.com | (619) 750 2088 | GC, remodel, ADU | Imperial Beach · San Diego County | — | — |
| Ability Plumbing Service And Repair | Michael Gerard Sottile | — | (619) 631 7065 | Other | Santee · San Diego County | — | — |
| Abl Construction & Engineering | Luis Lorenzo Amaya | — | (619) 366 0129 | GC, remodel, ADU | Bonita · San Diego County | — | — |
| Able Cable INC DBA A C I Communications | Michael Lawrence Collette | — | (818) 223 4316 | Other | San Diego · San Diego County | — | — |
| Able Drywall | Able Drywall | — | (619) 884 7587 | Other | Spring Valley · San Diego County | — | — |
| Able Electric Carlsbad Electrician | Karimi Iraj | eddie.haro@electricare.com | (858) 405 9797 | Electricians | Carlsbad · San Diego County | — | — |
| Able Heating & Air Conditioning INC | Moses Nathaniel Moreno | steved@precision-ac.com | (619) 409 9100 | HVAC | Chula Vista · San Diego County | — | — |
| Able Mills INC | Patrick Edward Knopp | — | (619) 660 9820 | Other | Spring Valley · San Diego County | — | — |
| Able Plumbing & Drain Service | Scott Martin Fiori | — | (619) 985 8204 | Other | San Diego · San Diego County | — | — |
| Able Vet Contracting INC | Michael Anthony Charrette | — | (619) 820 5924 | GC, remodel, ADU | El Cajon · San Diego County | — | — |
| Abm Building Services LLC | Richard John Cooke | — | (858) 279 1300 | HVAC | San Diego · San Diego County | — | — |
| Abnormal Builds INC | Kristen Grace Freeman | hello@abnormalbuilds.com | (619) 483 1324 | GC, remodel, ADU | La Mesa · San Diego County | — | — |
| Abou INC | Marvin Mahir Abou | guy@infinitydesignbuild.com | (858) 761 3597 | GC, remodel, ADU | El Cajon · San Diego County | — | — |
| About Anywhere Almost Anytime Always Accurate INC DBA Drain | Scott Alan Mc Gervey | — | (760) 212 6231 | GC, remodel, ADU | Carlsbad · San Diego County | — | — |
| Above & Beyond Drywall INC | Daniel Lee Gray | — | (760) 696 1958 | Other | Vista · San Diego County | — | — |
| Above & Beyond The Call Electric | Brandon James Mcclure | — | (951) 837 3633 | Electricians | Oceanside · San Diego County | — | — |
| Above All Awning Cleaning | Fu Jordan Chan | — | (858) 547 4340 | Other | San Diego · San Diego County | — | — |
| Above All Development | Thomas Joseph Fanale | — | (760) 809 1140 | GC, remodel, ADU | Carlsbad · San Diego County | — | — |
| Above All Floors INC | Shawn Christopher Ray | — | (619) 565 0455 | Other | La Jolla · San Diego County | — | — |
| Above All Plumbing | Above All Plumbing | — | (619) 755 0774 | Other | San Diego · San Diego County | — | — |
| Above All Residential & Commercial Garage Door Service | Guerrero Victor | — | (619) 464 2255 | Other | San Diego · San Diego County | — | — |
| Above And Below Construction | Jason Christopher Midgley | — | (619) 715 2211 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Abr Painting INC | Bejarano Ricardo Angulo | abr.paint@gmail.com | (619) 530 4384 | Windows, patio, painters | Chula Vista · San Diego County | — | — |
| Abra Collabra | Abra Collabra | — | (760) 433 3000 | Other | Oceanside · San Diego County | — | — |
| Abrahams Construction | Kenneth William Birdsell | — | (760) 543 6476 | GC, remodel, ADU | San Marcos · San Diego County | — | — |
| Abreu & Sons | Abreu & Sons | — | (760) 594 7167 | GC, remodel, ADU | Valley Center · San Diego County | — | — |