| Bojorquez Landscaping INC | Sotuela Jose Yanez | — | (707) 628 3652 | Windows, patio, painters | Dixon · Solano County | — | — |
| Bond To Build | Bond To Build | — | (707) 416 1352 | GC, remodel, ADU | Vallejo · Solano County | — | — |
| Boreco INC | Troy Devin Lamb | — | (707) 365 2604 | Other | Vacaville · Solano County | — | — |
| Bowers Electric INC | Daryl Wayne Bowers | — | (707) 742 4094 | Electricians | Benicia · Solano County | — | — |
| Brace Construction | Bruce David Jr Corey | — | (510) 815 4585 | GC, remodel, ADU | Fairfield · Solano County | — | — |
| Bradley J Flynn | Bradley J Flynn | — | (510) 715 0551 | GC, remodel, ADU | Fairfield · Solano County | — | — |
| Braga's Landscaping | Braga's Landscaping | — | (707) 290 8009 | Windows, patio, painters | Vacaville · Solano County | — | — |
| Brambila Heating & Air Conditioning | Brambila Heating & Air Conditioning | — | (415) 827 6197 | HVAC | Fairfield · Solano County | — | — |
| Branch's Home And Office Maintenance And Remodeling | Robert Craig Branch | — | (707) 321 1229 | GC, remodel, ADU | Vallejo · Solano County | — | — |
| Brand Energy Services Of California INC | Curtis Thomas Mcdonald | — | (707) 514 6835 | Windows, patio, painters | Fairfield · Solano County | — | — |
| Brand Scaffold Services INC | Curtis Thomas Mcdonald | — | (707) 290 4346 | Windows, patio, painters | Fairfield · Solano County | — | — |
| Brandon Fade Painting | Brandon Fade Painting | — | (925) 639 2757 | Windows, patio, painters | Benicia · Solano County | — | — |
| Brandsafway Services LLC | Curtis Thomas Mcdonald | — | (707) 290 4346 | Windows, patio, painters | Fairfield · Solano County | — | — |
| Brasher Woodworks | Brasher Woodworks | — | (775) 690 2168 | GC, remodel, ADU | Vallejo · Solano County | — | — |
| Brazeal Floors | Brazeal Floors | — | (707) 373 9123 | Other | Benicia · Solano County | — | — |
| Brazelton Builders | Bruce William Brazelton | — | (707) 322 1527 | GC, remodel, ADU | Vacaville · Solano County | — | — |
| Brazelton Builders INC | Michael John Brazelton | — | (707) 337 9988 | GC, remodel, ADU | Vacaville · Solano County | — | — |
| Breeden Painting | Breeden Painting | — | (707) 334 6343 | Windows, patio, painters | Vallejo · Solano County | — | — |
| Brian Buehler | Brian Buehler | — | (707) 529 7667 | Windows, patio, painters | Fairfield · Solano County | — | — |
| Bridgeway Civil Constructors INC | Gabriel Sunshine Farncroft | — | (707) 455 7033 | Other | Vacaville · Solano County | — | — |
| Bright & Clear Poolcare | Soriano Neftali Sanchez | — | (707) 225 5328 | Pool | Fairfield · Solano County | — | — |
| Bright Future Builders INC | Alan Rubio | — | (510) 772 9699 | GC, remodel, ADU | Vacaville · Solano County | — | — |
| Bro's General Construction INC | James Ray Warford | — | (415) 571 3224 | GC, remodel, ADU | Suisun City · Solano County | — | — |
| Brother's Heating & Air INC | Christopher Allen Pixton | — | (925) 822 6946 | HVAC | Birds Landing · Solano County | — | — |
| Bruce Construction Group LLC | Steven Michael Bruce | — | (707) 688 5345 | GC, remodel, ADU | Fairfield · Solano County | — | — |
| Bruno Construction | Ronald Joseph Bruno | john@smith.com | (925) 584 5368 | GC, remodel, ADU | Benicia · Solano County | — | — |
| Bruno Vogel Carpentry | Bruno Vogel Carpentry | — | (707) 685 0713 | GC, remodel, ADU | Vacaville · Solano County | — | — |
| Brush Bros Painting INC | Gustavo Omar Camacho-Garcia | info@brushbrospainting.com | (707) 655 1891 | Windows, patio, painters | Vallejo · Solano County | — | — |
| Brushed Line Painting | Brushed Line Painting | — | (415) 264 5109 | Windows, patio, painters | Vallejo · Solano County | — | — |
| Brushworks | Lopez Pablo | — | (707) 249 8344 | Windows, patio, painters | Vacaville · Solano County | — | — |
| Bryan Lopez | Bryan Lopez | — | (707) 914 1004 | Windows, patio, painters | Vacaville · Solano County | — | — |
| Buck Stove Spa & Home Center | Dennis Lee Wentworth | — | (707) 249 1490 | GC, remodel, ADU | Vacaville · Solano County | — | — |
| Budget Construction Company | Robert Anthony Pacchelli | — | (707) 399 8081 | GC, remodel, ADU | Fairfield · Solano County | — | — |
| Budget Plumbing | Budget Plumbing | steve@budgetplumbing.com | (619) 563-1400 | Other | Vacaville · Solano County | — | — |
| Build All | Build All | info@buildall.com | (707) 337 4096 | GC, remodel, ADU | Vallejo · Solano County | — | — |
| Building Titans INC | John Kiser | — | (707) 720 3244 | GC, remodel, ADU | Fairfield · Solano County | — | — |
| Bulldog Builders | Bulldog Builders | — | (925) 580 0339 | GC, remodel, ADU | Dixon · Solano County | — | — |
| Buzz Electric | Ismail Basri | — | (707) 567 1831 | Electricians | Vallejo · Solano County | — | — |
| Byron Smith General Contractor | Byron Smith General Contractor | — | (415) 990 4071 | GC, remodel, ADU | Vallejo · Solano County | — | — |
| C & C Plumbing | C & C Plumbing | — | (707) 434 1355 | Other | Fairfield · Solano County | — | — |