| Awt Roofing & Construction | Monique Kint Larrick | — | (707) 746 7500 | Other roofers | Benicia · Solano County | — | — |
| Ayubi Electric INC | Eric David Ayubi | — | (916) 847 1591 | Electricians | Dixon · Solano County | — | — |
| B & B Hughes Construction INC DBA Hughes Construction | Robert Lee Hughes | — | (707) 398 5413 | Other | Suisun City · Solano County | — | — |
| B And W Door Service INC | Emmett Theodore Wilkinson | — | (415) 748 2100 | Other | Vacaville · Solano County | — | — |
| B B Electric | Brad Marshall Baum | — | (707) 689 0574 | Electricians | Vacaville · Solano County | — | — |
| B Bishop Plumbing | B Bishop Plumbing | — | (707) 208 0641 | Other | Fairfield · Solano County | — | — |
| B F Builders | B F Builders | info@bfbuilders.com | (916) 416 9449 | GC, remodel, ADU | Benicia · Solano County | — | — |
| B H Construction | Frank Byron Hethcock | — | (707) 333 3228 | GC, remodel, ADU | Suisun City · Solano County | — | — |
| B K Builders | B K Builders | — | (707) 449 4608 | GC, remodel, ADU | Vacaville · Solano County | — | — |
| B Orozco Construction INC | Orozco Flores Baltazar | — | (510) 047 8761 | GC, remodel, ADU | Vacaville · Solano County | — | — |
| B Reilly Construction | Bryan Stuart Reilly | — | (707) 486 5137 | GC, remodel, ADU | Vacaville · Solano County | — | — |
| B V Builders INC | Inderpreet Singh Pahwa | — | (510) 409 9373 | GC, remodel, ADU | Fairfield · Solano County | — | — |
| B W Plastering INC | Benjamin Ronald Wenger | b.wplastering@outlook.com | (925) 360 6260 | Other | Vacaville · Solano County | — | — |
| B&r Design LLC | Tyler Blu Richards | — | (925) 300 7099 | Other | Benicia · Solano County | — | — |
| B&r Glass INC | Bobby Michael Rutledge | — | (707) 448 8100 | Windows, patio, painters | Vacaville · Solano County | — | — |
| B4 Precision Builder | B4 Precision Builder | — | (707) 580 1517 | GC, remodel, ADU | Vacaville · Solano County | — | — |
| Babcock Construction | Howard Dale Babcock | — | (707) 386 2434 | GC, remodel, ADU | Fairfield · Solano County | — | — |
| Backbone Builders INC | Garcia Jairo Chavez | — | (707) 999 8470 | GC, remodel, ADU | Fairfield · Solano County | — | — |
| Bade Electric | Christopher Edward Bade | — | (707) 307 3788 | Electricians | Vallejo · Solano County | — | — |
| Bains Construction Co | Kulwant Singh Bains | — | (707) 373 6587 | GC, remodel, ADU | Vallejo · Solano County | — | — |
| Baldo's Landscaping INC | Miguel Angel Calderon | — | (707) 373 2089 | Windows, patio, painters | Vacaville · Solano County | — | — |
| Banner Plumbing | Banner Plumbing | — | (707) 249 5078 | Other | Vacaville · Solano County | — | — |
| Barajas Builders & Remodeling INC | Sagrero Emmanuel Barajas | — | (707) 339 0733 | GC, remodel, ADU | Vallejo · Solano County | — | — |
| Barajas Full Landscaping | Barajas Full Landscaping | — | (707) 294 7149 | Windows, patio, painters | Suisun City · Solano County | — | — |
| Barajas Gardening | Barajas Gardening | — | (707) 344 1602 | Windows, patio, painters | Fairfield · Solano County | — | — |
| Barneys Affordable Plumbing INC | Matthew Samuel Rivenbark | — | (707) 450 0444 | Other | Vacaville · Solano County | — | — |
| Barrera's Tile | Barrera's Tile | — | (707) 235 1732 | Other | Suisun City · Solano County | — | — |
| Barry's Cultured Marble INC | Barry Damon Martin | — | (707) 745 3444 | Other | Benicia · Solano County | — | — |
| Bartlett Plumbing And Mechanical | Bartlett Plumbing And Mechanical | — | (707) 454 6348 | Other | Vallejo · Solano County | — | — |
| Bay Area Back Flow Service | Frank Eli Phillips | — | (925) 625 9456 | Other | Rio Vista · Solano County | — | — |
| Bay Area Builders | Bay Area Builders | — | (707) 643 1750 | GC, remodel, ADU | Vallejo · Solano County | — | — |
| Bay Area General Contractors INC | Anguiano Arroyo Arnoldo | — | (707) 731 3717 | GC, remodel, ADU | Vallejo · Solano County | — | — |
| Bay Area Grading And Paving | Bay Area Grading And Paving | — | (707) 529 6805 | Other | Vacaville · Solano County | — | — |
| Bay Area Landscaping | Bay Area Landscaping | — | (707) 643 1571 | Windows, patio, painters | Vallejo · Solano County | — | — |
| Bay Area Landscaping Services | Leos Servando | — | (510) 334 1304 | Windows, patio, painters | Vallejo · Solano County | — | — |
| Bay Area Painting INC | Arroyo Arnoldo Anguiano | — | (707) 731 7645 | Windows, patio, painters | Vallejo · Solano County | — | — |
| Bay Area Patch & Seal | George George Stanley | — | (707) 761 7379 | Other | Dixon · Solano County | — | — |
| Bay Area Refinishing & Staining | Bay Area Refinishing & Staining | — | (707) 999 7879 | Windows, patio, painters | Vacaville · Solano County | — | — |
| Bay Area Remodelers LLC | Julio Cesar De Luna Segura | — | (415) 497 9594 | GC, remodel, ADU | Suisun City · Solano County | — | — |
| Bay Area Rescue Plumbing | Bay Area Rescue Plumbing | — | (707) 319 9554 | Other | Vallejo · Solano County | — | — |