| J & S Builders | Selina Jun Yi Chen | — | (415) 710 8639 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J A Emmanuel Construction | Jose Amilcar Chim | — | (415) 902 2469 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J Aaron Seymour | J Aaron Seymour | — | (415) 310 4900 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J B Construction And Maintenance Co | John Andrew Burton | — | (415) 770 1336 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J C Construction | Jason Gang Fong | — | (415) 637 2234 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J C General Construction | Liang Jiachang | — | (415) 609 3029 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J C L Construction | Lui Jason | — | (415) 860 6592 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J C L Electric INC | Juchi Li | — | (415) 286 2220 | Electricians | San Francisco · San Francisco County | — | — |
| J C Metal Specialists INC | Chan Jeffrey | info@jcmetals.com | (650) 827 1618 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J C Plumbing Company | Chan Carl | — | (415) 740 3359 | Other | San Francisco · San Francisco County | — | — |
| J C Steel Fabrication INC | Judy Fong Chan | lilian@jcsteel.ca | (650) 827 1618 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J C Sun Construction INC | Jason Zhi Cheng Cao | — | (415) 889 7055 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J Co Construction INC | Victor Ernesto Funes-Bolanos | — | (415) 410 7719 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J Construction Solutions | Jonathan Ralph Sandler | gc@jconstructionsolutions.com | (415) 847 8171 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J Cortes & Bros | J Cortes & Bros | — | (628) 688 0274 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| J E Brown Company Mechanical Contractors | Albert Edward Iii Kaechele | — | (415) 626 4044 | HVAC | San Francisco · San Francisco County | — | — |
| J E Builder General Contractor | J E Builder General Contractor | — | (415) 316 3978 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J Farley Construction | John Micheal Farley | — | (415) 793 1893 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J Flores Construction Company INC | David Andrew Grigg | — | (415) 337 2934 | Other | San Francisco · San Francisco County | — | — |
| J Gomez Painting | J Gomez Painting | — | (415) 424 9265 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| J H Painting LLC | Hernandez Jesus | — | (415) 531 7033 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| J J Hernandez Construction | Jose J Valle Hernandez | — | (415) 871 1963 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J K Associates | James Gerard Mylett | — | (415) 269 6378 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J L A Construction | Ascencio Jean-luc | — | (415) 370 3500 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J L Construction | Johnny She Lei | — | (415) 816 1813 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J L Electric | Jeremiah Francis O'leary | — | (415) 307 2777 | Electricians | San Francisco · San Francisco County | — | — |
| J L Electric Construction Co | Li Wei Jie | — | (415) 516 3316 | Electricians | San Francisco · San Francisco County | — | — |
| J L General Construction INC | Jimmy Lee | — | (415) 333 0889 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J L Plumbing | J L Plumbing | jack@jlplumbing.com | (415) 550 7628 | Other | San Francisco · San Francisco County | — | — |
| J M A Construction INC | Jim Kwing Ma | — | (415) 282 6628 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J M Construction | John Paul Murphy | info@jmconstruction.com | (805) 472-2400 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J M L Builders | J M L Builders | jml.builders@yahoo.com | (415) 806 9570 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J M Pacific Bay Plumbing INC | Wen Min Jiang | — | (415) 928 9826 | Other | San Francisco · San Francisco County | — | — |
| J M Plumbing | J M Plumbing | — | (415) 424 3425 | Other | San Francisco · San Francisco County | — | — |
| J Martinez And Son's Construction | Jorge Marcotulio Martinez | — | (415) 722 0907 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J N Construction | Nan Junyao | — | (650) 660 3456 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J N Pacific Construction Co | Yui Tsung Ng | — | (650) 826 1190 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J O Roofing INC | Osorio Juan Osorio | — | (415) 368 8942 | Other roofers | San Francisco · San Francisco County | — | — |
| J O'driscoll Electrical INC | James Nicholas O'driscoll | — | (415) 850 2241 | Electricians | San Francisco · San Francisco County | — | — |
| J P E Construction | Eric Zoek Hua Cheung | — | (415) 990 9138 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |