| J P Electrical Co | Jerry Jian Ji Han | — | (415) 286 3613 | Electricians | San Francisco · San Francisco County | — | — |
| J P Petrie Construction & Design | Charles Huateng Ling | — | (415) 752 7474 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J Power Electrical INC | Carlos M Jimenez | — | (415) 375 5015 | Electricians | San Francisco · San Francisco County | — | — |
| J R C Construction | Juan Carlos Hernandez | — | (415) 235 7787 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J R M Construction | Jonathon Redito Morales | — | (415) 297 3358 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J R Monterrosa INC | Jose Ricardo Jr Monterrosa | — | (415) 602 2130 | Other | San Francisco · San Francisco County | — | — |
| J Sullivan Construction Corporation | Justin Sullivan Skuce | justin@jsullivanconstruction.com | (650) 799 8120 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J T & M Construction Co | Jimmy Teng Hui Mei | — | (415) 385 1282 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J Thrupp Painting INC | Jason Christopher Thrupp | — | (415) 846 4241 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| J W D Construction | Cheng Nelson | — | (415) 939 3642 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J W Electrical & Plumbing Co | Chik To Wong | — | (415) 290 3333 | Electricians | San Francisco · San Francisco County | — | — |
| J W INC | Jun Yan Wang | — | (415) 350 8911 | Electricians | San Francisco · San Francisco County | — | — |
| J Wood Painting & Restoration Co | Joseph Gregory Wood | — | (415) 731 9384 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| J Y Construction | Yu Jianfeng | — | (415) 503 7833 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J Y Electrical Construction Co INC | Maggie Jiaming Liu | — | (415) 559 1567 | Electricians | San Francisco · San Francisco County | — | — |
| J Z Construction | Jian Xuan Zhang | — | (415) 601 5290 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J&r Construction And Painting INC | Michael Joseph Ruggiero | — | (415) 661 8392 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| J-t A C Corp | Peter Ming Wah Chung | — | (415) 609 2633 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Ja Plumbing INC | Yim Ting Young | — | (415) 286 0676 | Other | San Francisco · San Francisco County | — | — |
| Jack Thompson | Jack Thompson | — | (415) 298 4788 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Jacob Spiegel | Jacob Spiegel | — | (415) 290 3500 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Jacuzzi Properties INC | Douglas Reid Jacuzzi | — | (415) 759 4100 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Jafe Custom Finishing INC | Bryon Anthony Mathieson | — | (415) 863 6196 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| Jakcon INC | James Anthony Kelly | — | (425) 425 4533 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Jakobson Construction INC | Mikael Jakobson | — | (415) 875 0690 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| James A Keenan Construction | James Anthony Keenan | — | (415) 305 5771 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| James Anthony Fergus DBA Jim Fergus Construction | James Anthony Fergus | — | (415) 606 5932 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| James C Ghielmetti | James C Ghielmetti | — | (925) 468 3737 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| James Carriere Restoration Remodeler | James Scott Carriere | — | (415) 990 3879 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| James Deasy | James Deasy | — | (415) 987 1161 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| James E Williams Jr Construction | James Edward Jr Williams | — | (415) 215 1106 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| James Keith Construction | James Edward Keith | — | (415) 317 2039 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| James L Kelly Construction | James Lucas Kelly | — | (415) 850 4789 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| James Laufenberg Construction | James Lawrence Laufenberg | — | (415) 269 4997 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| James M Wu | James M Wu | — | (415) 812 3731 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| James Siegel Victorian Restoration | James Siegel Victorian Restoration | — | (415) 216 3301 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| James Wedrell | James Wedrell | — | (415) 822 7124 | Other | San Francisco · San Francisco County | — | — |
| James' Electric Company | Jing Jin Lin | inquiries@jameselectric.ca | (415) 816 2806 | Electricians | San Francisco · San Francisco County | — | — |
| Jan Build And Construction | He Peihao | — | (415) 319 5272 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Jas Builders INC | Jason Lui | — | (415) 860 6592 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |