| Armstrong Painting | Armstrong Painting | — | (831) 428 5214 | Windows, patio, painters | Watsonville · Santa Cruz County | — | — |
| Arroyo Brothers Construction LLC | John Cornelius Peck | — | (408) 489 1364 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Arroyo Construction | Mario Alberto Arroyo Macias | — | (831) 435 0050 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Artcraft Construction | Bret Holmes Bivins | — | (831) 763 1776 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Artemesias Garden | Artemesias Garden | — | (831) 400 6277 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |
| Artificial Lawns Direct INC | Michael Wade Petrini | — | (831) 430 9260 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |
| Artisan Works Plastering | Artisan Works Plastering | — | (831) 247 9615 | Other | Scotts Valley · Santa Cruz County | — | — |
| Artistic Reflections INC | Elliot Harford Ferdig | — | (831) 763 9022 | Windows, patio, painters | Aptos · Santa Cruz County | — | — |
| Asante Plumbing INC | Robert Waruingi Thuita | — | (831) 420 7332 | Other | Santa Cruz · Santa Cruz County | — | — |
| Asap Appliance Service INC | Andrew Marnoch Napier | — | (831) 438 0110 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| Ash Construction | Andre Stefan Hernandez | ashconstructionservicesuk@gmail.com | (831) 247 0409 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Ashley Tile | Ashley Tile | — | (831) 334 1309 | Other | Felton · Santa Cruz County | — | — |
| Athenour Landscaping | Jon David Athenour | — | (831) 454 8422 | Windows, patio, painters | Aptos · Santa Cruz County | — | — |
| Atkinson Painting | Atkinson Painting | — | (831) 332 9474 | Windows, patio, painters | Watsonville · Santa Cruz County | — | — |
| Atlantis Paving & Grading | Ryan Finneran Rittenhouse | — | (831) 431 6409 | Other | Scotts Valley · Santa Cruz County | — | — |
| Atzimba Landscaping & Maintenance | Atzimba Landscaping & Maintenance | — | (831) 588 4725 | Windows, patio, painters | Watsonville · Santa Cruz County | — | — |
| Austin Construction Company | Jared Dale Austin | — | (831) 227 6815 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| Austin Groswird Construction | Alexander Austin Groswird | — | (831) 331 8406 | GC, remodel, ADU | Ben Lomond · Santa Cruz County | — | — |
| Av Construction | Avila Armando Vargas | — | (831) 706 5926 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Avalon Services | Robert Edward Oliveros | — | (831) 476 8684 | GC, remodel, ADU | Capitola · Santa Cruz County | — | — |
| Avalon Structural INC | Roger William Pase | info@avalonstructural.com | (831) 479 4389 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Avid Solutions | Avid Solutions | — | (831) 419 8616 | Other | Santa Cruz · Santa Cruz County | — | — |
| Avila Design Build INC | Manuel Alfonso Avila | — | (916) 956 6558 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Avila Tree Service | Avila Gonzalez Moises | — | (831) 454 6239 | Other | Santa Cruz · Santa Cruz County | — | — |
| Aviles Construction | Aviles Abdiel | — | (831) 254 7927 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Aw Hydronics INC | Adam Kelsey White | — | (831) 227 1230 | Other | Soquel · Santa Cruz County | — | — |
| Ayala's Quality Construction | Ayala Carlos | — | (831) 325 3200 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Ayuuk Construction INC | Ignacio Javier Antonio | — | (831) 740 7560 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Azcon Construction | Joseph David Azevedo | — | (831) 331 6565 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Aztlan Electric | Garcia Jose | — | (831) 234 4614 | Electricians | Santa Cruz · Santa Cruz County | — | — |
| B - United Drywall | B - United Drywall | — | (831) 348 4919 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| B A Travers Construction | Bruce Allen Travers | — | (831) 252 0080 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| B C M Construction And Remodeling | Bryan Casey Marsh | — | (831) 247 4453 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| B C S Construction Incorporated | Mark Street Wilcox | — | (831) 724 2474 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| B D S Construction | Bruce Dwane Smith | — | (831) 419 4789 | GC, remodel, ADU | Soquel · Santa Cruz County | — | — |
| B F D Custom Woodworking | David William Brown | — | (831) 722 2220 | Other | Watsonville · Santa Cruz County | — | — |
| B G Electric Co | Brian Michael Guzman | sales@bgelectric.com | (831) 234 3138 | Electricians | Capitola · Santa Cruz County | — | — |
| B G Electric INC | Brian Michael Guzman | sales@bgelectric.com | (831) 234 3138 | Electricians | Capitola · Santa Cruz County | — | — |
| B G Weekley Builder | B G Weekley Builder | bgweekleybuilder@yahoo.com | (408) 849 9389 | GC, remodel, ADU | Boulder Creek · Santa Cruz County | — | — |
| B L D Construction | Bobby Leroy De Herrera | — | (408) 891 0649 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |