| Albro Construction INC | Jeffrey Paul Albro | — | (831) 818 7211 | GC, remodel, ADU | Ben Lomond · Santa Cruz County | — | — |
| Alex Siu | Alex Siu | — | (831) 234 3811 | Windows, patio, painters | Soquel · Santa Cruz County | — | — |
| Alex Work Construction | Alexander Vallee Work | — | (831) 818 2383 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Alexander Building Company INC | Daniel Anthony Alexander | — | (831) 901 3564 | GC, remodel, ADU | Felton · Santa Cruz County | — | — |
| Alexander Technologies | Alexander Technologies | sales@alexandertechnologies.com | (866) 299 4363 | Electricians | Soquel · Santa Cruz County | — | — |
| All Day Bay Landscaping | All Day Bay Landscaping | — | (831) 566 8145 | Windows, patio, painters | Soquel · Santa Cruz County | — | — |
| All Earth Geotechnical Engineering INC | Philip T Edwards | — | (831) 345 8852 | Other | Santa Cruz · Santa Cruz County | — | — |
| All Metal Construction | Graham George Bubb | — | (408) 210 7324 | Other | Aptos · Santa Cruz County | — | — |
| All Phase Painting | All Phase Painting | — | (831) 428 2110 | Windows, patio, painters | Watsonville · Santa Cruz County | — | — |
| Allen Rexrode | Allen Rexrode | — | (831) 566 0415 | GC, remodel, ADU | Felton · Santa Cruz County | — | — |
| Alliance Drywall Systems INC | Mark David Cole | — | (831) 239 8095 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| Allison Woodworking | Allison Woodworking | — | (831) 419 0455 | Other | Santa Cruz · Santa Cruz County | — | — |
| Allsafe Lock Co | Vickie Lynn Dahl | — | (831) 462 6045 | Other | Santa Cruz · Santa Cruz County | — | — |
| Allstar Painting | Allstar Painting | — | (831) 251 1930 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |
| Alltrade Custom Construction | Matthew William Hicks | — | (831) 251 8065 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Alo's Roofing Corporation | Fernando Ismael Alonso Melendez | — | (831) 348 5336 | Other roofers | Watsonville · Santa Cruz County | — | — |
| Aloha Integrated Building | Aloha Integrated Building | alohaintegratedbuilding@gmail.com | (209) 373 0459 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| Aloha Landscape INC | Phillip Eugene Roberson | — | (831) 461 4160 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |
| Aloha Pool And Spa Service | Robert Roman Erwin | — | (831) 438 7575 | Pool | Scotts Valley · Santa Cruz County | — | — |
| Alpha Omega Electric | Alpha Omega Electric | — | (831) 282-6035 | Electricians | Santa Cruz · Santa Cruz County | — | — |
| Alpha Pro Painting | Alpha Pro Painting | alphapropainting@att.net | (831) 566 2129 | Windows, patio, painters | Watsonville · Santa Cruz County | — | — |
| Alpine Electric Power INC | Brian Joseph Mc Cain | — | (831) 475 1155 | Electricians | Soquel · Santa Cruz County | — | — |
| Alreck Construction | Dustin Lee Alreck | — | (808) 348 3847 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Alternative Power And Light | Alternative Power And Light | — | (831) 227 5709 | Electricians | Aptos · Santa Cruz County | — | — |
| Altieri Construction | Michael James Altieri | — | (831) 588 0405 | GC, remodel, ADU | La Selva Beach · Santa Cruz County | — | — |
| Aluffi Tile And Natural Stone | Aluffi Tile And Natural Stone | — | (831) 212 6738 | Other | Santa Cruz · Santa Cruz County | — | — |
| Alun Lang Construction | Alun Stephen Lang | — | (650) 235 5085 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Always Current Electric | Ry Aden Kelly | info@alwayscurrentelectric.net | (831) 234 8553 | Electricians | Boulder Creek · Santa Cruz County | — | — |
| Am Rough Carpentry | Am Rough Carpentry | — | (831) 776 2254 | Other | Watsonville · Santa Cruz County | — | — |
| Amanda Masterton | Amanda Masterton | — | (831) 334 6920 | Windows, patio, painters | Watsonville · Santa Cruz County | — | — |
| Ambriz Landscaping | Ambriz Landscaping | — | (831) 662 2519 | Windows, patio, painters | Aptos · Santa Cruz County | — | — |
| Ameri - Cana Decorating | Ameri - Cana Decorating | — | (831) 536 5451 | Windows, patio, painters | Watsonville · Santa Cruz County | — | — |
| American Custom Painting | American Custom Painting | — | (831) 247 0697 | Windows, patio, painters | Freedom · Santa Cruz County | — | — |
| American River Constructors A Joint Venture | Construction Company Granite | — | (831) 768 4086 | Other | Watsonville · Santa Cruz County | — | — |
| Americon INC | Jeremy Paul Oliveira | info@americon.com | (831) 750 6551 | Other | Watsonville · Santa Cruz County | — | — |
| Anchor Pipe & Drain INC | Darrel Ochieng Forde | — | (831) 566 7493 | Other | Ben Lomond · Santa Cruz County | — | — |
| Ancient Oak Construction LLC | Dylan Wesley Childs | — | (831) 246 2156 | GC, remodel, ADU | Boulder Creek · Santa Cruz County | — | — |
| Anderson Christie Real Estate | Anderson Christie Real Estate | info@andersonchristie.com | (831) 515-8421 | Property managers | Santa Cruz · Santa Cruz County | — | — |
| Andre Gandrup | Andre Gandrup | — | (831) 621 2242 | Other | Scotts Valley · Santa Cruz County | — | — |
| Andren Homes | Andren Homes | info@andrenhomes.com | (831) 291-5043 | Property managers | Santa Cruz · Santa Cruz County | — | — |