| Abreu Building - Remodeling INC | Jordan Michael Abreu | guy@infinitydesignbuild.com | (619) 288 2995 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Abs Acoustics | Sakib Banjic | — | (858) 610 5407 | Other | San Diego · San Diego County | — | — |
| Abs Seamless Rain Gutters | Abs Seamless Rain Gutters | — | (760) 975 4033 | Other | Vista · San Diego County | — | — |
| Absolute Air | Absolute Air | mn@tritonair.net | (760) 731 7600 | HVAC | Fallbrook · San Diego County | — | — |
| Absolute Av Design LLC | Daniel Aaron Craig | — | (619) 663 7478 | Other | San Diego · San Diego County | — | — |
| Absolute Customs Tile INC | Jorge Antonio Gonzalez | — | (619) 755 3314 | Other | San Diego · San Diego County | — | — |
| Absolute Duct & Chimney Cleaning Services | Sarah Kathryn Rotter | absolutedcc@gmail.com | (619) 328 9733 | HVAC | Santee · San Diego County | — | — |
| Absolute Electric | Jacob Michael Dockery | — | (619) 761 3844 | Electricians | San Ysidro · San Diego County | — | — |
| Absolute Floor | Absolute Floor | — | (619) 921 7700 | Other | Lakeside · San Diego County | — | — |
| Absolute Flooring | Absolute Flooring | — | (619) 571 1029 | Other | National City · San Diego County | — | — |
| Absolute Plumbing Heating Air & Drains INC | Ramirez Lujano Jose Trinidad | micah@micahrich.com | (619) 862 0397 | HVAC | Chula Vista · San Diego County | — | — |
| Absolute Tile & Stone INC | Nels Eric Peterson | nels@absolutetilestone.com | (760) 639 2960 | Other | Vista · San Diego County | — | — |
| Absolute Waterproofing | Absolute Waterproofing | interested@domainmarket.com | (760) 643 7119 | Other | Carlsbad · San Diego County | — | — |
| Absolutely Electric INC | Travis John Nixon | — | (619) 436 8874 | Electricians | Ramona · San Diego County | — | — |
| Abstract Works INC | Arturo Anthony Dambacher | aqremodeling2@gmail.com | (619) 534 7261 | GC, remodel, ADU | Lakeside · San Diego County | — | — |
| Abt Construction INC | Absalon Benjamin Torres Bello | — | (619) 517 9793 | GC, remodel, ADU | El Cajon · San Diego County | — | — |
| Abundant Life Landscape Maintenance INC | Ralph Jay Jr Morris | — | (619) 277 2410 | Windows, patio, painters | La Mesa · San Diego County | — | — |
| Abw Builders INC | Amanda Kristina Bla Walters | — | (619) 876 0216 | GC, remodel, ADU | El Cajon · San Diego County | — | — |
| Abz Coatings INC | Adan Omar Zavala Mercado | info@abzcoatings.com | (619) 301 6733 | Windows, patio, painters | La Mesa · San Diego County | — | — |
| AC / Dc Electric S D INC | Matthew Mani Samar | — | (858) 699 4683 | Electricians | San Diego · San Diego County | — | — |
| AC Electric | Jose Alfredo Cruz | — | (760) 687 8844 | Electricians | Oceanside · San Diego County | — | — |
| AC Masonry INC | Alfonso Canseco | — | (760) 583 7995 | Other | Escondido · San Diego County | — | — |
| AC Mold Specialists LLC | Sleiman Abou-Chacra | contact@acmoldspecialists.com | (619) 558-6112 | GC, remodel, ADU | El Cajon · San Diego County | — | — |
| AC Plumbing | AC Plumbing | — | (760) 822 7951 | Other | Oceanside · San Diego County | — | — |
| AC Plus Construction | Robert John De Vries | mn@tritonair.net | (858) 254 7374 | HVAC | Poway · San Diego County | — | — |
| AC Pool & Spa Service | Andrew William Clum | — | (760) 814 0371 | Pool | Cardiff By The Sea · San Diego County | — | — |
| AC Remodeling | AC Remodeling | — | (619) 551 1337 | GC, remodel, ADU | Chula Vista · San Diego County | — | — |
| AC Stone Counter Tops INC | Alfredo Cortes | — | (619) 674 7757 | Other | San Diego · San Diego County | — | — |
| AC Vz Electric INC | Francisco Jose Acosta | — | (619) 844 1612 | Electricians | Imperial Beach · San Diego County | — | — |
| Ac's Earthwork | Ac's Earthwork | — | (619) 227 5909 | Other | Chula Vista · San Diego County | — | — |
| Acacia Landscape Incorporated | Kubilis Diaz Pablo | — | (619) 540 6433 | Windows, patio, painters | Chula Vista · San Diego County | — | — |
| Acacia Overhead Doors | Acacia Overhead Doors | — | (760) 688 6903 | Other | Bonsall · San Diego County | — | — |
| Academy Backflow Service INC | Rolf Daniel Wachter | admin@academybackflow.com | (619) 561 0991 | Other | Jamul · San Diego County | — | — |
| Acadia Corporation | Mary Louise Orphey | bd@acadia-pharm.com | (619) 574 0404 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Acadia Design & Construction | Dale Herbert Brown | — | (619) 316 1290 | GC, remodel, ADU | Escondido · San Diego County | — | — |
| Acampora INC DBA Cabo Ceilings | Jack Darren Acampora | — | (760) 390 1246 | Other | San Marcos · San Diego County | — | — |
| Accel Framing INC | Ryan Thomas Holmes | — | (619) 445 1340 | GC, remodel, ADU | Poway · San Diego County | — | — |
| Accel Integrated Electronics | Accel Integrated Electronics | — | (619) 851 7932 | Other | San Diego · San Diego County | — | — |
| Accelerated DBA Accelerated Engineering | Gilbert Moreno Agundez | — | (619) 454 4332 | GC, remodel, ADU | La Jolla · San Diego County | — | — |
| Accent Construction | Rodney Lamarr Thompson | info@accenteci.com | (619) 954 4852 | HVAC | Escondido · San Diego County | — | — |