| All Surface Countertops | All Surface Countertops | — | (916) 791 1717 | Other | Roseville · Placer County | — | — |
| All Systems Electrical INC | Robert William Grganto | — | (916) 652 8560 | Electricians | Rocklin · Placer County | — | — |
| All Things Lighting And Electric | Nathan Todd Forcier | — | (916) 216 3984 | Electricians | Newcastle · Placer County | — | — |
| All Walls Construction | Gilbert George Chavez | — | (408) 422 9095 | GC, remodel, ADU | Foresthill · Placer County | — | — |
| All-star Plumbing Solutions LLC | Allen Craig Perkins | — | (530) 308 3520 | Other | Rocklin · Placer County | — | — |
| Allclear Communications & Construction Services | James Allen Davis | — | (916) 316 1874 | Electricians | Rocklin · Placer County | — | — |
| Allcom Electric & Data | David Thomas Jr Hartman | — | (408) 767 9405 | Electricians | Auburn · Placer County | — | — |
| Allen Builders INC | Clayton Paul Allen | — | (530) 624 7600 | GC, remodel, ADU | Colfax · Placer County | — | — |
| Allen Security Low Volt System | Douglas Earl Allen | — | (530) 370 6136 | Alarm and generators | Applegate · Placer County | — | — |
| Alliance Ptg Services | Todd Raymond Minner | — | (916) 804 8806 | Windows, patio, painters | Roseville · Placer County | — | — |
| Allison Development INC | John Steven Allison | — | (916) 947 7068 | GC, remodel, ADU | Rocklin · Placer County | — | — |
| Allright Enterprises INC DBA Rick's Refrigeration | Richard Girard Shopek | — | (916) 201 0808 | HVAC | Granite Bay · Placer County | — | — |
| Allstar Garage Cabinets | Len Baker | — | (916) 624 3900 | Other | Rocklin · Placer County | — | — |
| Allterrain Scapes INC | Rene Michael Marinus | — | (916) 467 2003 | Windows, patio, painters | Auburn · Placer County | — | — |
| Almas Heating & Air | Almas Heating & Air | — | (916) 826 7038 | HVAC | Roseville · Placer County | — | — |
| Aloha Construction Co | Kevin Sharee Phan | — | (916) 288 5856 | GC, remodel, ADU | Granite Bay · Placer County | — | — |
| Aloha Heating And Cooling | Debra Ann| Stephens Debbie Ann Stephens | — | (530) 823 0363 | HVAC | Meadow Vista · Placer County | — | — |
| Alpen Homes LLC | Joseph Gregory Rung | — | (415) 828 5549 | GC, remodel, ADU | Kings Beach · Placer County | — | — |
| Alpenglow Builders | Jason Scott Gray | info@alpenglowbuilders.com | (530) 386 6120 | GC, remodel, ADU | Tahoe City · Placer County | — | — |
| Alpenglow Landscaping | Alpenglow Landscaping | — | (530) 563 8755 | Windows, patio, painters | Tahoe City · Placer County | — | — |
| Alpha Construction | John Andrew Lecas | — | (916) 792 5303 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Alpha Construction Engineering | Keith Jr Kemp | — | (209) 922 3355 | Electricians | Roseville · Placer County | — | — |
| Alpha Developments | Ahmed Tarek Mohieldien | info@alphadevelopments.com | (925) 384 3820 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Alpha Explosives | Bruce Carlton Townes | — | (916) 645 3377 | Other | Lincoln · Placer County | — | — |
| Alpha Woodwork LP | Thiago Cavalcante Lins | — | (954) 695 8461 | Other | Rocklin · Placer County | — | — |
| Alpine Air Co | Phillis Lee Ivory | — | (916) 791 0425 | HVAC | Granite Bay · Placer County | — | — |
| Alpine Arborists Tree Care | Crystal Kelley Boutelle | alpinearborists@gmail.com | (530) 582 1286 | Tree | Tahoe City · Placer County | — | — |
| Alpine Builders Co | Scot Allen Lemma | — | (530) 562 7464 | GC, remodel, ADU | Meadow Vista · Placer County | — | — |
| Alpine Building Co | Robert Lawrence Barrett | — | (313) 220 8298 | GC, remodel, ADU | Carnelian Bay · Placer County | — | — |
| Alpine Building Company LLC | Robert Lawrence Barrett | — | (530) 807 1029 | GC, remodel, ADU | Carnelian Bay · Placer County | — | — |
| Alpine Earth Moving | Alpine Earth Moving | troy@alpineearthmoving.com | (916) 496 1241 | Other | Auburn · Placer County | — | — |
| Alpine Security & Sound | Alpine Security & Sound | — | (530) 401 0699 | Electricians | Colfax · Placer County | — | — |
| Alta California Custom Tile Works | Alta California Custom Tile Works | — | (916) 317 6645 | Other | Auburn · Placer County | — | — |
| Alta Concrete INC | Martinez Israel Alvarez | — | (916) 996 1115 | Other | Rocklin · Placer County | — | — |
| Alta Sierra Pest Control | Alta Sierra Pest Control | altasierrapestcontrol@gmail.com | (916) 791-7928 | Pest, tile roofs | Granite Bay · Placer County | — | — |
| Alta Sierra Pools INC | Jeffrey Robert Bain | altasierrapoolservice@hotmail.com | (916) 261 1014 | Pool | Roseville · Placer County | — | — |
| Altec Construction INC | Shawn Lee Dalton | — | (916) 641 9550 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Altech Design & Construction | Vicki Ione Peters | — | (916) 849 7584 | GC, remodel, ADU | Granite Bay · Placer County | — | — |
| Altysh Construction | Aleksandr V L Tyshkevich | — | (916) 517 0025 | GC, remodel, ADU | Loomis · Placer County | — | — |
| Alvah Group INC | Cameron Alvah Hale | — | (650) 746 6785 | Other | Rocklin · Placer County | — | — |