| Ample Electric INC | Jose Alfredo Diaz | — | (530) 795 9913 | Electricians | Winters · Yolo County | — | — |
| Ams Golden Construction | Sanchez Mongoy Alejandro | — | (916) 580 7756 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| Anders Johnson Building | Anders Johnson Building | — | (530) 565 5758 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| Andersen Window Tinting | Andersen Window Tinting | — | (707) 386 1201 | Other | Davis · Yolo County | — | — |
| Andrew's Landscaping | Andrew's Landscaping | — | (916) 834 9939 | Windows, patio, painters | West Sacramento · Yolo County | — | — |
| Andy Adan | Andy Adan | — | (530) 631 9737 | Windows, patio, painters | Woodland · Yolo County | — | — |
| Andy Gagnon Landscapes INC DBA Cricket Pools | Andrew Joseph Gagnon | — | (530) 681 7572 | Windows, patio, painters | Woodland · Yolo County | — | — |
| Ap Painting And Decorating INC | Jose Alfredo Martinez Perez | — | (530) 312 9635 | Windows, patio, painters | Woodland · Yolo County | — | — |
| Apace Siding Corp | Aleksandr V Barnyak | — | (916) 801 7784 | Windows, patio, painters | West Sacramento · Yolo County | — | — |
| Apex Home Renovation INC | Merva Vlad | — | (916) 370 1688 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| Apex Standard Builders | Tobiah Andrew Townsend | toby.apexsb@gmail.com | (530) 400 5113 | GC, remodel, ADU | Davis · Yolo County | — | — |
| Ar Concrete | Ar Concrete | — | (707) 689 4203 | Other | Woodland · Yolo County | — | — |
| Arcona Construction INC | Richarderic Thomas Arcona | — | (916) 402 6597 | Electricians | West Sacramento · Yolo County | — | — |
| Arif's Painting INC | Arif Ali | arifspainting@yahoo.com | (530) 383 4751 | Windows, patio, painters | Woodland · Yolo County | — | — |
| Arizona Weather Heating And Air | Arizona Weather Heating And Air | — | (530) 312 5743 | HVAC | Woodland · Yolo County | — | — |
| Arm - All Construction | Armando Valdez Quezada | — | (530) 838 5111 | GC, remodel, ADU | Esparto · Yolo County | — | — |
| Armando's Landscape Service | Armando Ezequiel Jr Gamino | — | (530) 312 8976 | Windows, patio, painters | Woodland · Yolo County | — | — |
| Armstrong Custom Mowing | Armstrong Custom Mowing | — | (530) 796 4486 | Windows, patio, painters | Brooks · Yolo County | — | — |
| Aro Wastewater Systems | Aro Wastewater Systems | — | (707) 299 7600 | Other | Woodland · Yolo County | — | — |
| Ashcreek Construction Company | Cody Robert Martin | — | (916) 524 6241 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| At&gm Construction INC | Minh Van Hoang | — | (916) 291 6367 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| Austerman INC | Brian Michael Austerman | — | (916) 371 1031 | Other | West Sacramento · Yolo County | — | — |
| Av Roofing Pro | Edgar Alejandro Villarruel-limon | avroofingpro@gmail.com | (707) 580 6617 | Other roofers | Woodland · Yolo County | — | — |
| Azure Painting | Azure Painting | — | (530) 219 2718 | Windows, patio, painters | Winters · Yolo County | — | — |
| B & D Geerts Construction INC | Benjamin John Geerts | — | (530) 795 2252 | Other | Winters · Yolo County | — | — |
| B B G Plumbing | Jesus Gonzalez | — | (530) 681 8115 | Other | Woodland · Yolo County | — | — |
| B G Landscape And Full Yard Maintenance | Singh Balwant | — | (530) 308 2804 | Windows, patio, painters | Davis · Yolo County | — | — |
| B G Plumbing | B G Plumbing | bgplumbing77@gmail.com | (650) 481-5246 | Other | Woodland · Yolo County | — | — |
| B J Construction | Baltazar Villegas Jaime | — | (530) 867 5757 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| B J's Heating & Air Conditioning INC | Mario Albert Johnson | — | (530) 662 8601 | HVAC | Woodland · Yolo County | — | — |
| B S Plumbing | B S Plumbing | — | (530) 665 0527 | Other | Woodland · Yolo County | — | — |
| B Squared | B Squared | — | (916) 747 6602 | GC, remodel, ADU | Davis · Yolo County | — | — |
| B Z Service Station Maintenance INC | Kyle Martin Musick | — | (916) 371 2380 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| Bailey's Trenchless Incorporated | Andrew Desmond Tanberg | — | (530) 662 1113 | Other | Woodland · Yolo County | — | — |
| Baird Electric | Jeffery Scott Baird | — | (530) 330 1910 | Electricians | Davis · Yolo County | — | — |
| Bantu Painting | Bantu Painting | sales@bantupainting.com | (916) 291 5446 | Windows, patio, painters | Davis · Yolo County | — | — |
| Barajas Landscape | Barajas Landscape | — | (916) 275 6011 | Windows, patio, painters | West Sacramento · Yolo County | — | — |
| Bardet Construction INC | Eric Charles Bardet | ecbardet@gmail.com | (916) 534 0969 | GC, remodel, ADU | Davis · Yolo County | — | — |
| Barnes Painting | Barnes Painting | — | (916) 283 1385 | Windows, patio, painters | West Sacramento · Yolo County | — | — |
| Baron Masonry | Baron Masonry | — | (916) 201 5282 | Other | West Sacramento · Yolo County | — | — |