| Actually Design Build INC | Charlie Vaughan | — | (415) 519 0735 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Acy Construction LLC | Alexander Chung Yeung | — | (415) 577 1580 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Ad Art INC | Terry Jack Long | — | (415) 869 6464 | Other | San Francisco · San Francisco County | — | — |
| Ad Precision Construction INC | Alan Long Vu Du | — | (415) 881-7005 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Adam Construction | Adam La | — | (415) 359 5550 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Adamas Builders INC | Tony Smith Di Giorgio | — | (415) 259 7638 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Adams Remodeling Service | Mark Dennis Adams | — | (415) 699 6713 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Adcon | Mohammad Reza Adib | — | (415) 615 2342 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Add A Garage INC | Kenneth Dean Bloch | info@addagarage.com | (415) 760 9565 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Added Dimensions Incorporated | Paul Benett Wayne | — | (415) 442 5830 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Adept Construction Solutions INC | Igor Kleyner | — | (415) 602 2290 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Adilson & Sons Construction | Adilson Alexander Sanchez Esteban | — | (415) 678 0194 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Adl Roofing Solutions INC | Antonio Diaz-Lazcano | adlroofingsolutions@gmail.com | (415) 528 0825 | Other roofers | San Francisco · San Francisco County | — | — |
| Adler Builders INC | Oshri Prosper Malka | mark@adlerbuilders.com | (650) 398 9030 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Adonay Construction LLC | Tat Choy Ho | — | (415) 573 4016 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Adrian P Harty | Adrian P Harty | — | (415) 342 3170 | Other | San Francisco · San Francisco County | — | — |
| Adt Security Services | Adt Security Services | — | (650) 458-0123 | Alarm and generators | Brisbane · San Francisco County | — | — |
| Advanced Design | Advanced Design | — | (415) 759 6962 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Advanced Integrated Pest Management | Advanced Integrated Pest Management | — | (925) 969-7586 | Pest, tile roofs | Concord · San Francisco County | — | — |
| Advanced Plumbing And Drain INC | Nicholas Wayne Bobos | — | (415) 744 4944 | Other | San Francisco · San Francisco County | — | — |
| Aequitas Constructors INC | William Fredrick Gower | — | (415) 921 8033 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Aesthete INC | Susan Lynn Williams | — | (415) 864 7178 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| Agbayani Construction Corporation | Vincent Douglas Agbayani | — | (650) 994 9380 | HVAC | San Francisco · San Francisco County | — | — |
| Agmez Roofing Construction Corp | Maribel Gomez Estupinian | — | (415) 684 6407 | Other roofers | San Francisco · San Francisco County | — | — |
| Aguilar Construction | Rey Eduar Aguilar Tupul | — | (415) 756 1876 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Aguilar Electric | Margarito R Aguilar Mejia | office@aguilarelectricsf.com | (415) 470 7375 | Electricians | San Francisco · San Francisco County | — | — |
| Ahn House Corporation | Clark Hoon Ahn | — | (415) 822 7000 | Other roofers | San Francisco · San Francisco County | — | — |
| Ai Electric Corp | Daniel Wei An Kwan | — | (415) 336 2793 | Electricians | San Francisco · San Francisco County | — | — |
| Aimhigh Scaffolding INC | Kenny Jing Yi Li | — | (415) 652 0161 | Other | San Francisco · San Francisco County | — | — |
| Air Flow Pros Heating And Air Conditioning | Air Flow Pros Heating And Air Conditioning | — | (628) 214-4401 | HVAC | San Francisco · San Francisco County | — | — |
| Air Perfection Heating & Air Conditioning INC | Jonathan Micah Takesh Shorter | — | (415) 590 2934 | HVAC | San Francisco · San Francisco County | — | — |
| Aj Electric | Jiang Wei An | john@aj-electric.com | (415) 859 8828 | Electricians | San Francisco · San Francisco County | — | — |
| Ajs Painting | Ajs Painting | — | (415) 505 6978 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| Ak Brady Construction | Utting Kjerstie | — | (415) 608 3932 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Akirsch Construction | Andrew Joseph Kirsch | — | (203) 722 5675 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Al J Electric | Jue Alan | — | (415) 385 0608 | Electricians | San Francisco · San Francisco County | — | — |
| Al's Remodeling INC | Alan Zapien | — | (408) 391 2261 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Alameda Structural INC | Daniel Steele Kennedy | — | (510) 523 1610 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Alan Merritt | Alan Merritt | — | (415) 845 7018 | Other | San Francisco · San Francisco County | — | — |
| Alan Zhu Construction | Ri Shao Zhu | — | (415) 310 1813 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |