| Block12 Construction | Shaun Michael Ryan | — | (415) 508 4220 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Bloom Builders LLC | John Everett Sangiacomo | john@bloom-builders.com | (415) 412 1153 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Blue Bay Contractors | Vicente Bernal Ayala | — | (415) 585 7879 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Blue Bend Construction INC | Thomas Bartholomew Mc Inerney | — | (415) 819 4977 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Blue Birds Construction INC | He Ji Jiu | — | (415) 710 8133 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Blue Fox Construction Comp Joseph Badra | Joseph Pierre Badra | — | (415) 760 1959 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Blue Puzzle Painting INC | Alan Keny Santisteban | — | (415) 728 2407 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| Blue Skies Painting | Marinos Iacovou | — | (415) 370 8508 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| Blue Skies Painting | Blue Skies Painting | — | (415) 665 2708 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| Blue Sky Building | Geng Pei Yu | — | (650) 531 1326 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Blue Wood Construction INC | Zi Hui| Yang Zihui Yang | — | (415) 860 6303 | Electricians | San Francisco · San Francisco County | — | — |
| Blueprint Construction | Nelson Duc Dat Tran | — | (415) 889 9316 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Bmj Construction INC | Andy T Nguyen | — | (415) 670 0507 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Bmk Construction Corporation | Ethan He | — | (628) 288 8888 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Bntz Construction INC | Cruz Alberto Benitez | — | (415) 846 5691 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Boaz Mor Design And Construction | Boaz Mor | — | (415) 559 0604 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Bob Buckter Color Consultant | Bob Buckter Color Consultant | — | (415) 922 7444 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| Bob's Plantation Shutters For Less | Bob's Plantation Shutters For Less | — | (415) 577 3380 | Other | San Francisco · San Francisco County | — | — |
| Bobee Construction | Bao Zhoulei | — | (415) 987 7669 | Electricians | San Francisco · San Francisco County | — | — |
| Bodhi Landscapes | Bodhi Landscapes | bodhilandscapes1@gmail.com | (415) 231 4469 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| Boko Build | Boko Build | — | (831) 818 5050 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Bold Construction | Cody Jared Fornari | — | (831) 207 9927 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Bolt Electric | Andrew Wai Lun Ho | — | (415) 753 2658 | Electricians | San Francisco · San Francisco County | — | — |
| Bon Air Services | Dan Toubiana | info@bonairservices.com | (415) 552 2352 | HVAC | San Francisco · San Francisco County | — | — |
| Boom City Builders LLC | Garritt Clayton Blanz | — | (415) 871 1191 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Borak Design And Construction | Levent Borak | — | (415) 513 8130 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Bouche Painting | Bouche Painting | bouchepainting@gmail.com | (415) 933 2677 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| Boxcabco | Evan Michael Becker | — | (415) 341 4604 | Other | San Francisco · San Francisco County | — | — |
| Boyle Patrick | Boyle Patrick | — | (415) 648 6411 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Bracht Alex Design | Bracht Alex Design | — | (415) 424 5660 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Brad Heinzen Construction Services | Bradley John| Heinzen Brad John Heinzen | — | (415) 647 0813 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Bradford Construction INC | Michael Robert Bradford | — | (415) 725 8269 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Bradford Huang Contraction Co | Bradford Gong Ping Huang | — | (415) 602 8168 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Bradford Solinsky Lighting & Electric | Bradford Hansen Solinsky | — | (415) 430 8521 | Electricians | San Francisco · San Francisco County | — | — |
| Bradshaw Group INC | Mathew Joel Bradshaw | — | (415) 361 5557 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Brady Concrete INC | Bernard James Brady | info@bradyconstructionsf.com | (415) 324 0370 | Other | San Francisco · San Francisco County | — | — |
| Brady Construction | Thomas Knight Brady | info@bradyconstruction.com | (415) 722 6121 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Bran Painting INC | Gonzalez Yasser Martinez | — | (415) 706 1910 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| Bravo Made Construction INC | Minh Kha Phan | — | (415) 994 3710 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Brendan Waters Construction INC | Brendan Martin Waters | — | (415) 876 0658 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |