SoHo is currently (as of July 2018) zoned as a manufacturing district that allows for light manufacturing, wholesale business and commercial use only, with the exception of certified artists, who are allowed to live in commercial buildings, if they can prove that they need the space to produce their work.
In 1969, the Department of City Planning conducted a survey that resulted in rezoning of the SoHo area, which was then zoned strictly for manufacturing use. In 1971, the Board of Estimates made it legal for certified artists to live in joint living and work quarters (JLWQ) in the newly-zoned SoHo area.
This zoning law that governs the use of buildings still stands today and requires every SoHo household to include at least one certified artist. But what, exactly, is an artist? According to the city, an artist will be granted certification if he or she demonstrates a serious, long-term commitment to an artistic medium and demonstrates a need for space to make art. Aesthetic considerations and the number of shows an artist has had (or not had) are supposedly not taken into account.