Back in November last year, 213 and 215 20th Street were listed as a package development site by Cushman & Wakefield. Price: $3,200,000. According to their website, the properties are in contract. There are no recent records of sales for either property, but they're already set for demolition. 213 has a secondary building that's also disappearing.
These are across the street from the poultry market, the best decorated live market I've ever come across, though hardly a draw, perhaps, for upscale apartment dwellers. They're also close to the big development site on 19th.
From the lexicon of realtor-speak, we live in "burgeoning" times.