| American Timber Frame Construction | Jonathan Robert Hand | — | (805) 674 8437 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Americano Tile | Americano Tile | — | (805) 748 3989 | Other | San Luis Obispo · San Luis Obispo County | — | — |
| Ames Anderson General Contractor | Ames Anderson General Contractor | — | (831) 277 6778 | GC, remodel, ADU | Cambria · San Luis Obispo County | — | — |
| Amundson Construction | Sean Arnold Amundson | amundson.brad@gmail.com | (805) 878 1075 | GC, remodel, ADU | Grover Beach · San Luis Obispo County | — | — |
| Anchored Flooring | Anchored Flooring | — | (805) 712 5613 | Other | Atascadero · San Luis Obispo County | — | — |
| Andersen Driveway Sealing | Andersen Driveway Sealing | — | (805) 462 7199 | Other | Templeton · San Luis Obispo County | — | — |
| Anderson Burton Construction INC | Dan Carrisosa | — | (805) 481 5096 | Other roofers | Arroyo Grande · San Luis Obispo County | — | — |
| Anderson Construction Co | Dean Russell Anderson | — | (805) 441 7472 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Andrade Landscape | Andrade Landscape | — | (805) 545 9732 | Windows, patio, painters | San Luis Obispo · San Luis Obispo County | — | — |
| Andreas Modl Woodworking | Andreas Modl Woodworking | — | (805) 602 6242 | Other | Oceano · San Luis Obispo County | — | — |
| Andrew Beem Steel Construction | Andrew Charles Beem | contact@sansoxygen.com | (805) 748 4633 | Other | San Luis Obispo · San Luis Obispo County | — | — |
| Andrew Brown Ag Services | Andrew William Brown | — | (805) 237 9610 | Other | Paso Robles · San Luis Obispo County | — | — |
| Andrew Brown General Engineering INC | Andrew William Brown | — | (805) 237 9610 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Andrew C Foster Construction | Andrew Charles Foster | — | (805) 806 5934 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Andrew Carey Easterbrook | Andrew Carey Easterbrook | — | (805) 440 2407 | GC, remodel, ADU | San Miguel · San Luis Obispo County | — | — |
| Andrew David Devillers | Andrew David Devillers | — | (805) 550 2893 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Andrew Davis | Andrew Davis | — | (831) 262 2187 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Andrew Dotson Construction | James Andrew Dotson | — | (805) 235 2628 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Andrew Edmonds DBA Edmonds Asphalt Maintenance | Edmonds Asphalt Maintenance | — | (805) 541 6892 | Other | San Luis Obispo · San Luis Obispo County | — | — |
| Andrew Gangloff Builders INC | Andrew Wayne Gangloff | — | (805) 423 1234 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Andy's Concrete | Andy's Concrete | — | (951) 384 8465 | Other | San Luis Obispo · San Luis Obispo County | — | — |
| Andy's Wood Floors | Andy's Wood Floors | — | (805) 264 4568 | Other | Nipomo · San Luis Obispo County | — | — |
| Angello's Floor Coverings INC | Angello Steve | %20g.angellosflooring@gmail.com | (805) 474 0915 | Other | Arroyo Grande · San Luis Obispo County | — | — |
| Anguiano's Tile | Anguiano's Tile | — | (805) 296 0510 | Other | Paso Robles · San Luis Obispo County | — | — |
| Anselm Painting Company | Steven Curtis Anselm | — | (805) 215 3054 | Windows, patio, painters | Arroyo Grande · San Luis Obispo County | — | — |
| Anthony Clark Electric | Anthony Gabriel Clark | — | (820) 202 1408 | Electricians | Los Osos · San Luis Obispo County | — | — |
| Anthony Rodriguez Painting | Anthony Rodriguez Painting | — | (805) 464 1142 | Windows, patio, painters | Atascadero · San Luis Obispo County | — | — |
| Anthony W Viola | Anthony W Viola | — | (805) 550 8462 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Anthony W Viola General Contractor INC | Anthony William Viola | — | (805) 550 8462 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Anthony's Flooring | Anthony's Flooring | — | (805) 550 3375 | Other | San Luis Obispo · San Luis Obispo County | — | — |
| Anton Refrigeration | Anton Refrigeration | — | (805) 709 2626 | HVAC | Pismo Beach · San Luis Obispo County | — | — |
| Apex Fire Control Services | Adam Wilson Weleba | — | (805) 369 2005 | Other | Paso Robles · San Luis Obispo County | — | — |
| Apex Kitchen Solutions | Jed Brusseau | — | (805) 975 8170 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Apex Landscaping | Apex Landscaping | — | (805) 550 0447 | Windows, patio, painters | San Luis Obispo · San Luis Obispo County | — | — |
| Apex Pump And Well Services | Joshua Ryan Myers | — | (805) 835 9331 | Other | Paso Robles · San Luis Obispo County | — | — |
| Apex Roofing | Luis Jesus Martinez Hernandez | info@apexroofing.com | (661) 772 3524 | Other roofers | Los Osos · San Luis Obispo County | — | — |
| Apodaca Construction | Marc Anthony Apodaca | — | (805) 489 1794 | Other | Grover Beach · San Luis Obispo County | — | — |
| Apodaca Construction INC | Marc Anthony Apodaca | — | (805) 489 1794 | Other | Grover Beach · San Luis Obispo County | — | — |
| Apodaca Paving INC | Marc Anthony Apodaca | — | (805) 489 1794 | Other | Grover Beach · San Luis Obispo County | — | — |
| Applied Telecom Technology | Applied Telecom Technology | — | (805) 391 3003 | Other | Paso Robles · San Luis Obispo County | — | — |