| 2 Countries Framing INC | Avelar Rene Miron | — | (916) 546 6963 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| 2M General Engineering INC | Matthew David Morrow | — | (916) 237 7445 | Other | West Sacramento · Yolo County | — | — |
| 3in1 Control INC | Michael Dwayne Spencer | — | (916) 496 6701 | HVAC | West Sacramento · Yolo County | — | — |
| 3R Roofing INC | Jesus Alfonso Lopez | — | (530) 554 5117 | Other roofers | Winters · Yolo County | — | — |
| 4 - Point Electric Co | Randy Lee Mc Anelly | — | (530) 219 1785 | Electricians | Woodland · Yolo County | — | — |
| 4G Construction | Bolivar Fabian | — | (530) 681 5235 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| 4wall Entertainment INC | William Warren Pursell | — | (916) 652 8575 | Electricians | West Sacramento · Yolo County | — | — |
| 5B Remodeling Co | Ben Allen Yoder | — | (535) 305 7411 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| A & J Construction | Jose Jesus Valeriano | — | (530) 848 3356 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| A & M Painting | A & M Painting | — | (530) 567 5354 | Windows, patio, painters | Esparto · Yolo County | — | — |
| A 1 Painting | A 1 Painting | — | (916) 549 8774 | Windows, patio, painters | West Sacramento · Yolo County | — | — |
| A Cisneros Painting | Alvarez Antonio Cisneros | — | (916) 496 0575 | Windows, patio, painters | W Sacramento · Yolo County | — | — |
| A D Plumbing | A D Plumbing | — | (925) 800 9918 | Other | West Sacramento · Yolo County | — | — |
| A G S | Michael Alan Fine | — | (916) 374 0376 | Windows, patio, painters | West Sacramento · Yolo County | — | — |
| A J Construction & Remodeling INC | Andrew Peter Malpass | — | (530) 231 5181 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| A J Electric | Jeffrey Thomas Hulse | — | (530) 219 7509 | Electricians | Davis · Yolo County | — | — |
| A P Plumbing & Fire INC | Anthony Peter Passantino | — | (530) 666 2612 | Other | Woodland · Yolo County | — | — |
| A P S Remodeling & Construction | Anthony Paul Stasinakis | — | (916) 519 6758 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| A R Landscaping INC | Singh Premjeet | — | (530) 204 9315 | Windows, patio, painters | Woodland · Yolo County | — | — |
| A U S A Painting Company | Loren Jourard Hawkins | — | (916) 224 8337 | Windows, patio, painters | West Sacramento · Yolo County | — | — |
| A U S Decking INC | Eric Anthony Meissner | — | (916) 373 5320 | Other roofers | West Sacramento · Yolo County | — | — |
| A Z Custom Construction INC | Vladimir Petrovich Zhuchenko | — | (916) 239 9235 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| A&g Electric | Neverov Aleksey | — | (916) 801 5234 | Electricians | West Sacramento · Yolo County | — | — |
| A-tomic Construction & Electric | Thomas William Jr Stinson | — | (916) 410 1886 | HVAC | West Sacramento · Yolo County | — | — |
| A1 Landscaping & Yard Maintenance LLC | Maymal Jeet Singh | — | (530) 304 2534 | Windows, patio, painters | Woodland · Yolo County | — | — |
| A1 Roofing | Adolfo Alexis Lizaola | — | (916) 459 7008 | Other roofers | Woodland · Yolo County | — | — |
| Aa Window & Door LLC | Matthew Shawn Szepesi | — | (530) 668 1262 | Other | Woodland · Yolo County | — | — |
| Aaron Villegas Construction | Ahaaron Carrill Villegas | — | (916) 997 8836 | GC, remodel, ADU | Esparto · Yolo County | — | — |
| Aava Builders INC | Luis Edinho Moreno | — | (707) 563 4873 | GC, remodel, ADU | Davis · Yolo County | — | — |
| Abb Builders INC | Todd Mason Belluomini | — | (707) 327 8640 | GC, remodel, ADU | Winters · Yolo County | — | — |
| Abi Plumbing Services | Israel Ivan Rico Gaspar | — | (530) 309 8987 | Other | Woodland · Yolo County | — | — |
| Abide Builders INC | Philip Joseph Pizzo | bids@abidebuilders.com | (916) 375 1009 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| Absolut Electric INC | Fox Yuriy | — | (916) 572 0851 | Electricians | West Sacramento · Yolo County | — | — |
| Accent Construction Services | Scott Kevin Le Boeuf | interested@domainmarket.com | (925) 980 3220 | GC, remodel, ADU | Esparto · Yolo County | — | — |
| Acton Construction | Wayne Trenwith Acton | — | (707) 337 2181 | GC, remodel, ADU | Esparto · Yolo County | — | — |
| Adair Construction | Chris Francis Adair | — | (916) 803 7508 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| Adam Ramming | Adam Ramming | — | (530) 315 2398 | GC, remodel, ADU | Davis · Yolo County | — | — |
| Adam Stuart Painting | Adam Stuart Painting | — | (510) 517 7995 | Windows, patio, painters | West Sacramento · Yolo County | — | — |
| Adeedo | Luke Irwin Hermann | info@adeedo.com | (916) 844 4750 | HVAC | Winters · Yolo County | — | — |
| Advance Framing INC | Cardenas Omar Alcantar | — | (530) 848 7542 | Other | Woodland · Yolo County | — | — |