| 2M General Engineering INC | Matthew David Morrow | — | (916) 237 7445 | Other | West Sacramento · Yolo County | — | — |
| A D Plumbing | A D Plumbing | — | (925) 800 9918 | Other | West Sacramento · Yolo County | — | — |
| A P Plumbing & Fire INC | Anthony Peter Passantino | — | (530) 666 2612 | Other | Woodland · Yolo County | — | — |
| Aa Window & Door LLC | Matthew Shawn Szepesi | — | (530) 668 1262 | Other | Woodland · Yolo County | — | — |
| Abi Plumbing Services | Israel Ivan Rico Gaspar | — | (530) 309 8987 | Other | Woodland · Yolo County | — | — |
| Advance Framing INC | Cardenas Omar Alcantar | — | (530) 848 7542 | Other | Woodland · Yolo County | — | — |
| Aggregate Engineering INC | Berardi Michael | — | (510) 750 5955 | Other | Davis · Yolo County | — | — |
| All Action Awards INC | Jay Peter Cahn | — | (530) 666 3220 | Other | Woodland · Yolo County | — | — |
| All Construction Engineering Contractors | Gus Tony Jr Stanko | — | (916) 628 0985 | Other | West Sacramento · Yolo County | — | — |
| All Points Recycling And Demolition | All Points Recycling And Demolition | — | (530) 979 7950 | Other | Woodland · Yolo County | — | — |
| Altos Utilities And Grading | Altos Utilities And Grading | — | (530) 204 7643 | Other | Woodland · Yolo County | — | — |
| Amazing Wood Floors | Amazing Wood Floors | interested@domainmarket.com | (530) 219 4902 | Other | Woodland · Yolo County | — | — |
| American Industrial Flooring INC | Dan Quin Chervinskas | — | (530) 787 4875 | Other | Esparto · Yolo County | — | — |
| American Water Works | American Water Works | — | (707) 333 6088 | Other | Winters · Yolo County | — | — |
| Andersen Window Tinting | Andersen Window Tinting | — | (707) 386 1201 | Other | Davis · Yolo County | — | — |
| Ar Concrete | Ar Concrete | — | (707) 689 4203 | Other | Woodland · Yolo County | — | — |
| Aro Wastewater Systems | Aro Wastewater Systems | — | (707) 299 7600 | Other | Woodland · Yolo County | — | — |
| Austerman INC | Brian Michael Austerman | — | (916) 371 1031 | Other | West Sacramento · 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 Plumbing | B G Plumbing | bgplumbing77@gmail.com | (650) 481-5246 | Other | Woodland · Yolo County | — | — |
| B S Plumbing | B S Plumbing | — | (530) 665 0527 | Other | Woodland · Yolo County | — | — |
| Bailey's Trenchless Incorporated | Andrew Desmond Tanberg | — | (530) 662 1113 | Other | Woodland · Yolo County | — | — |
| Baron Masonry | Baron Masonry | — | (916) 201 5282 | Other | West Sacramento · Yolo County | — | — |
| Bassett Plumbing INC | Stephen Patrick Bassett | — | (415) 464 7373 | Other | Woodland · Yolo County | — | — |
| Bdh Plumbing LLC | David Jr Raper | — | (707) 880 8262 | Other | Davis · Yolo County | — | — |
| Big Valley Metals | Joseph Robert Vela | — | (916) 372 2373 | Other | West Sacramento · Yolo County | — | — |
| Black Marble And Granite INC | Stephen Scott Black | — | (530) 681 5547 | Other | Esparto · Yolo County | — | — |
| Blickle's Tile | Blickle's Tile | — | (916) 834 9848 | Other | Woodland · Yolo County | — | — |
| Blueline Plumbing | Blueline Plumbing | — | (530) 902 3403 | Other | Dunnigan · Yolo County | — | — |
| Brennan Tile INC | Francis Patrick Brennan | — | (530) 304 2345 | Other | Woodland · Yolo County | — | — |
| Bullock Garage Door INC | Frank Thomas Rodriguez | — | (916) 868 4042 | Other | Woodland · Yolo County | — | — |
| Bullseye Leak Detection INC | Daniel Spatz | — | (916) 760 8944 | Other | West Sacramento · Yolo County | — | — |
| C & H Veteran Enterprises INC | James Michael Caldwell | — | (916) 371 0148 | Other | West Sacramento · Yolo County | — | — |
| C & R Concrete Construction INC | Rafael Castrejon Reynoso | — | (916) 871 6349 | Other | Woodland · Yolo County | — | — |
| C Pedroia General Engineering | C Pedroia General Engineering | — | (530) 848 6357 | Other | Woodland · Yolo County | — | — |
| C&j Communications | Carlos Hector Gallegos | — | (707) 366 5959 | Other | Winters · Yolo County | — | — |
| Cal - Neva Construction Services INC | Judith Ann Malone | — | (916) 374 9800 | Other | West Sacramento · Yolo County | — | — |
| Cal - State Woodwork INC | Dmitriy Pavlovich Sukach | — | (916) 798 0571 | Other | West Sacramento · Yolo County | — | — |
| Cal Finest Plumbing | Mariano Jr Sandoval | — | (530) 383 9502 | Other | Yolo · Yolo County | — | — |