As a real-estate developer and architect, Gary Reuben (above) can be found making a living through his work as the owner and operator of the Wolf Building, on Callowhill at 12th Street. After purchasing the building in 1997 with his business partner Gary Reisner, Reuben, 60, made the decision to rent space out to artists. Today, the building houses 50 apartments, more than 130,000 square feet for both commercial space and non-profit agencies, and Underground Arts, a music venue located in the building’s basement.