Fourth Avenue 's Mystery Buildings

Gowanus Lounge would be indebted to the reader that can tell us what the heck is exactly going at this building on Fourth Avenue, which has become progressively more vacant and boarded up as time has gone on. We certainly can guess what's going on here--the building is being cleared of tenants so that it can become a development site. But does anyone know the back story of these buildings, which are on Fourth Avenue between Douglass and Butler (Number 150-158)? The buildings changed hands on June 21, 2006, and are owned by 150 4th Ave. Realty Corp. LLC, which appears to be the longtime owner in different corporate form. The occupied buildings on either end are under different ownership.