| Arellano Plumbing | Arellano Plumbing | — | (530) 370 2389 | Other | Biggs · Butte County | — | — |
| Artisan Natural Stone | Artisan Natural Stone | — | (530) 624 3284 | Other | Chico · Butte County | — | — |
| Artisans Choice Remodel | Michael James Wittenberg | — | (530) 321 0697 | GC, remodel, ADU | Chico · Butte County | — | — |
| Artistic Building | Artistic Building | — | (916) 826 1834 | GC, remodel, ADU | Oroville · Butte County | — | — |
| Arvonen Construction | Adam Bennett Keller | — | (530) 624 2231 | GC, remodel, ADU | Durham · Butte County | — | — |
| Aston's Custom Tile | Aston's Custom Tile | casey@astonscustomtile.com | (530) 566 4647 | Other | Chico · Butte County | — | — |
| Atlas Plumbing And Mechanical | Joseph Thomas Grilho | — | (530) 514 5960 | Other | Chico · Butte County | — | — |
| Atomic General Engineering | Atomic General Engineering | — | (530) 809 6250 | Other | Durham · Butte County | — | — |
| Attaboy Plumbing | Attaboy Plumbing | — | (530) 354 9609 | Other | Chico · Butte County | — | — |
| Atticus Painting | Atticus Painting | — | (650) 787 0923 | Windows, patio, painters | Gridley · Butte County | — | — |
| Auer Construction | Ralph Gunter Auer | — | (530) 519 3885 | GC, remodel, ADU | Chico · Butte County | — | — |
| Austin Hart Flooring Company | Austin James Hart | — | (530) 521 2902 | Other | Chico · Butte County | — | — |
| Aw Custom Building | Aw Custom Building | — | (530) 230 8332 | GC, remodel, ADU | Paradise · Butte County | — | — |
| Axis Painting And Sealants | Axis Painting And Sealants | — | (530) 717 7617 | GC, remodel, ADU | Paradise · Butte County | — | — |
| Azkany Painting | Azkany Painting | — | (707) 479 6744 | Windows, patio, painters | Oroville · Butte County | — | — |
| B & B Construction | Rodney Gene Behunin | — | (530) 828 1576 | GC, remodel, ADU | Durham · Butte County | — | — |
| B & B Painting & Drywall | Floyd Guy Jr Byrd | — | (530) 693 1786 | Windows, patio, painters | Oroville · Butte County | — | — |
| B And B Builders | B And B Builders | — | (530) 876 6341 | Other roofers | Magalia · Butte County | — | — |
| B B C Construction | Glenn Lee Gribble | — | (209) 409 4326 | GC, remodel, ADU | Magalia · Butte County | — | — |
| B C Builders | B C Builders | — | (530) 624 0749 | GC, remodel, ADU | Durham · Butte County | — | — |
| B C Granite And Tile | B C Granite And Tile | — | (530) 624 4303 | Other | Chico · Butte County | — | — |
| B D Electric Company | Bradley Loring Dana | — | (530) 386 2484 | Electricians | Chico · Butte County | — | — |
| B J N Construction | Brian James Nokleby | — | (530) 570 6853 | GC, remodel, ADU | Chico · Butte County | — | — |
| B Jorgensen Electric | Barry L Jorgensen | — | (510) 266 2251 | Electricians | Gridley · Butte County | — | — |
| Badiali Built | Badiali Built | — | (530) 828 8075 | GC, remodel, ADU | Chico · Butte County | — | — |
| Bailey Carpets | Bailey Carpets | — | (831) 236 2215 | Other | Oroville · Butte County | — | — |
| Bailey Septic And Excavation LLC | Charles Henry Ii Bailey | — | (530) 720 5821 | GC, remodel, ADU | Magalia · Butte County | — | — |
| Bailey's Stone Tile Works | Bailey's Stone Tile Works | — | (530) 321 6964 | Other | Chico · Butte County | — | — |
| Baird Roofing Co | Michael Allen Baird | — | (530) 342 1631 | Other roofers | Chico · Butte County | — | — |
| Baker's Landscape Maintenance | Baker's Landscape Maintenance | — | (530) 624 0253 | Windows, patio, painters | Magalia · Butte County | — | — |
| Bakkum Construction | Kevin Gene Bakkum | — | (530) 846 0612 | GC, remodel, ADU | Gridley · Butte County | — | — |
| Bal General Contracting | Brett Andrew Lazorko | — | (530) 517 2095 | GC, remodel, ADU | Durham · Butte County | — | — |
| Bamford/apex | W Bamford INC J | — | (530) 353 6353 | Tree | Oroville · Butte County | — | — |
| Bandstra Construction | Ernest Paul Bandstra | — | (530) 345 7647 | GC, remodel, ADU | Chico · Butte County | — | — |
| Banks Construction | Matthew Warren Banks | — | (530) 961 3200 | GC, remodel, ADU | Paradise · Butte County | — | — |
| Banyan Tree Care | Banyan Tree Care | — | (530) 703 9531 | Tree | Oroville · Butte County | — | — |
| Bar Land Mgmt | Benjamin Allan Raynal | — | (530) 864 8141 | Other | Oroville · Butte County | — | — |
| Barch Flooring | Barch Flooring | — | (530) 762 9771 | Other | Chico · Butte County | — | — |
| Barnett Wallpaper & Painting | Barnett Wallpaper & Painting | — | (530) 321 5603 | Windows, patio, painters | Chico · Butte County | — | — |
| Barnhart Heating & Air | Barnhart Heating & Air | — | (530) 345 6356 | HVAC | Chico · Butte County | — | — |