| Almac Construction | Donald Bruce Mac Phee | — | (415) 987 3839 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Aloha Builders Company | Shi Xifeng | — | (415) 990 9719 | Electricians | San Francisco · San Francisco County | — | — |
| Aloha Painting | Aloha Painting | — | (415) 699 4598 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| Alonso Tile Company | Robert Manuel Alonso | — | (415) 533 4292 | Other | San Francisco · San Francisco County | — | — |
| Alonzo Construction | Hock Loon Lau | — | (415) 309 2350 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Alpha Bay Builders INC | Sherman Shuntsun Chiu | — | (415) 282 6188 | HVAC | San Francisco · San Francisco County | — | — |
| Alpha Construction & Solutions INC | Wei Ouyang | — | (415) 828 9984 | Electricians | San Francisco · San Francisco County | — | — |
| Alt Construction Group LLC | Shivam Jagat Mehta | — | (707) 628 7046 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Alta Construction Group INC | Shujuan Dai | — | (415) 254 6595 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Alta Group INC | Glenele Oberrich | office@altagroup.rs | (510) 388 3582 | Other | San Francisco · San Francisco County | — | — |
| Alum Rock Construction | Andrew Gen Pak Yee | — | (415) 840 4269 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Alvarez Construction & Tile INC | Martin Alvarez | — | (415) 452 3487 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Alwyn Construction INC | James Pui Cheng | — | (415) 867 0196 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Amac Electrical | Alan Paul Mc Carthy | — | (415) 725 0372 | Electricians | San Francisco · San Francisco County | — | — |
| Amalfi Tile & Marble | Amalfi Tile & Marble | — | (415) 309 5482 | Other | San Francisco · San Francisco County | — | — |
| Amber - Tru Construction INC | Barry Martin Mc Shane | info@ambertruconstruction.com | (415) 756 1502 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Ambrocio Construction INC | Tambriz Manuel Ambrocio | — | (415) 298 5546 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Amc Doors And Windows Inc. | Amc Doors And Windows Inc. | — | (650) 872-3744 | Windows, patio, painters | South San Francisco · San Francisco County | — | — |
| America Development Trust Construction | Xiu Min Wu | — | (832) 689 1515 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| American Building Contractor | American Building Contractor | — | (415) 531 2468 | Electricians | San Francisco · San Francisco County | — | — |
| American Construction | David George Manuel | — | (415) 305 2511 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| American Home Renewal Inc. | American Home Renewal Inc. | — | (800) 747-0272 | Windows, patio, painters | South San Francisco · San Francisco County | — | — |
| American Standard Roofing INC | Jun Jeffrey | — | (415) 671 0203 | Other roofers | San Francisco · San Francisco County | — | — |
| American Terrazzo Co | Elio Louis Filippi | — | (415) 921 1862 | Other | San Francisco · San Francisco County | — | — |
| Amherst Associates Construction Management INC | Kai Cheng Tang | — | (415) 271 8828 | Electricians | San Francisco · San Francisco County | — | — |
| Amihai M Hershko | Amihai M Hershko | — | (669) 223 1249 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Amir Electric | Rahmani Ghasem | — | (408) 300 8160 | Electricians | San Francisco · San Francisco County | — | — |
| Amone Corp | Cavan Wong | — | (415) 826 9678 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Ams Acropolis Construction Incorporated | Manuel Anibal Alonso Salazar | — | (415) 349 4620 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| An Dun Construction Sf INC | Declan Joseph Mc Kevitt | — | (415) 218 5055 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Anatra Fire Protection INC | Anthony Joseph Rodondi | — | (415) 465 3733 | Other | San Francisco · San Francisco County | — | — |
| Ancgc INC A New Concept General Construction | Perez Del Cid Ambrosio | — | (415) 613 4521 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Anco Iron & Construction INC | Blanca A Arguello | — | (415) 822 3131 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Anderson Design Build | Jeremy Ian Anderson | — | (415) 828 3001 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Anderson Roofing & Sheet Metal Co INC | James Allan Barron | andersonroofingsf@yahoo.com | (415) 584 9575 | Other roofers | San Francisco · San Francisco County | — | — |
| Anderson Rowe & Buckley INC | Richard I Jr Buckley | — | (415) 282 1625 | HVAC | San Francisco · San Francisco County | — | — |
| Andrew Adams | Andrew Adams | — | (781) 354 4118 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Andrew H Lange | Andrew H Lange | — | (415) 981 7386 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Andrew Mark Construction INC | Andrew Mark Gilchrist | — | (415) 410 6237 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Andrew Mihailovsky | Andrew Mihailovsky | — | (415) 661 4771 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |