Sharraxaadda

For the past couple of years, there is a flea market taking place in the driveway of 1620 Ditmas Ave (on E. 17 Street). This is a residential street, zoned R1, in a landmarked district. Business is not supposed to be conducted, especially outside the house. The people who run it don't even live in the house. This takes place EVERY Sunday when the weather is good. You know it's Sunday if they're out there selling.
Something must be done. It is illegal and unsightly.