Nicole Paikoff of Corcoran let us know about a special open house tour featuring four Lower East Side apartments tonight. These broker/buyer tours are usually not open to the general public, she says, but an exception is being made since these listings are all in “affordable” HDFC buildings. For all of these apartments, the buyer’s annual income cannot exceed $66,526 (single person) or $76,050 (family of 2). Pictured: one of two apartments available at 175 Rivington (priced at $385,000 and $349,000). Also on the tour: apartments at 172 Delancey ($425,000) and 157 Broome ($375,000). If you’re interested, stop by any of the apartments this evening between 530 and 7.