| Akerman Construction | Sergey Pislar | aker8man@gmail.com | (916) 767 8717 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Akili Construction LLC | Deon Karsten | — | (916) 963 0014 | GC, remodel, ADU | Auburn · Placer County | — | — |
| Akiva Building Consultants INC | Mark James Fragoso | — | (916) 945 6265 | GC, remodel, ADU | Loomis · Placer County | — | — |
| Al Seastrand | Al Seastrand | — | (916) 446 6200 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Alan R Kilborn | Alan R Kilborn | — | (916) 296 6746 | Electricians | Auburn · Placer County | — | — |
| Alan S Bandula | Alan S Bandula | — | (916) 380 2772 | GC, remodel, ADU | Auburn · Placer County | — | — |
| Albert S Raney And Sons | Albert S Raney And Sons | — | (916) 799 3848 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Alec Conroy Construction | Alec Trevor-russe Conroy | conroyconstruction1@gmail.com | (916) 899 8917 | GC, remodel, ADU | Auburn · Placer County | — | — |
| Alex Gordon Construction | Alexander Muirhead Mun Gordon | — | (530) 320 1408 | GC, remodel, ADU | Carnelian Bay · Placer County | — | — |
| Alex Perez Roofing INC | Parra-perez Alejandro | office@perezroofing.company | (916) 910 5542 | Other roofers | Roseville · Placer County | — | — |
| Alex Przybyslawski | Alex Przybyslawski | — | (530) 414 0687 | Other | Tahoe Vista · Placer County | — | — |
| Alex S Construction INC | Sfrengeu Alexandru | — | (916) 257 5662 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Alex The Arborist | Alex The Arborist | — | (530) 368 0681 | Tree | Auburn · Placer County | — | — |
| Alex Trenching & Hauling | Alex Trenching & Hauling | — | (916) 417 6900 | Other | Roseville · Placer County | — | — |
| Alex's Gutter Solutions | Alex's Gutter Solutions | — | (916) 476 0150 | Other | Roseville · Placer County | — | — |
| Alexander Electric | Alexander Leroy | — | (916) 225 2880 | Electricians | Roseville · Placer County | — | — |
| Alexander Enterprises | Hotea Alexandru | — | (916) 273 0221 | Electricians | Newcastle · Placer County | — | — |
| Alfaro General Engineering | Alfaro Michel | — | (916) 276 9627 | Other | Rocklin · Placer County | — | — |
| Alfred E Klenner General Engineering Contractor | Alfred Ernest Klenner | — | (916) 652 9704 | Other | Loomis · Placer County | — | — |
| Alfred M Arenz Jr DBA Arenz Co | Alfred Meyer Jr Arenz | — | (530) 878 2992 | Other | Meadow Vista · Placer County | — | — |
| All 1 Mechanical | Jon Christian Houde | — | (916) 345 3743 | HVAC | Roseville · Placer County | — | — |
| All About Gutters | Robert John Neeb | allaboutgutters@gmail.com | (530) 820 4020 | Other | Auburn · Placer County | — | — |
| All About Tile | Ioan Lupu | — | (916) 761 4501 | GC, remodel, ADU | Roseville · Placer County | — | — |
| All American Flooring | All American Flooring | — | (916) 257 6475 | Other | Lincoln · Placer County | — | — |
| All Cities Pool & Spa INC | Stephen Glen Beveridge | — | (916) 782 7959 | Pool | Granite Bay · Placer County | — | — |
| All City Construction & Drywall | Andrew Schmidbauer | — | (916) 730 6989 | GC, remodel, ADU | Loomis · Placer County | — | — |
| All Construction Services LLC | Dwayne Arthur Ray Boes | — | (916) 521 9750 | GC, remodel, ADU | Roseville · Placer County | — | — |
| All Four Construction | Frederick Alan Berger | — | (818) 653 5279 | GC, remodel, ADU | Auburn · Placer County | — | — |
| All Green Tree Service INC | Joseph Scott Franklin | — | (530) 788 2026 | Tree | Sheridan · Placer County | — | — |
| All Haul | All Haul | — | (916) 806 6142 | Other | Rocklin · Placer County | — | — |
| All Phase Construction | Cody Ryan Addington | — | (530) 913 0420 | GC, remodel, ADU | Foresthill · Placer County | — | — |
| All Phase Plumbing INC | Rodney Leroy Jr Sanchez | — | (206) 309-1088 | GC, remodel, ADU | Roseville · Placer County | — | — |
| All Power Electric | Joseph Paul La Brecque | — | (530) 389 9473 | Electricians | Colfax · Placer County | — | — |
| All Right Restoration & Construction INC | Micah John Bryant | — | (916) 955 7395 | GC, remodel, ADU | Roseville · Placer County | — | — |
| All Seasons Heating & Air Conditioning Services | Lance Joseph Sarnecki | — | (530) 878 8340 | HVAC | Meadow Vista · Placer County | — | — |
| All Seasons Pools And Spas | Loren Anthony Cohodes | — | (530) 888 7966 | Pool | Auburn · Placer County | — | — |
| All Sierra Electric | Caleb Robert Sherman | — | (530) 613 7988 | Electricians | Colfax · Placer County | — | — |
| All Slopes Roofing | Robert Bradley Jr Strong | robert@allslopesroofing.com | (916) 663 4036 | Other roofers | Loomis · Placer County | — | — |
| All State Leak Detection | Ivan Ramon Jr Romero | info@allstateleakdetection.com | (256) 338-2569 | Other | Roseville · Placer County | — | — |
| All State Paving Co | Sergio Ruelas Martinez | — | (916) 216 3223 | Other | Penryn · Placer County | — | — |