Dumpster Full of Dirt: What's Up at 413 17th Street?

UPDATE: Neighbor's 311 complaint concerning unpermitted excavation and demolition results in Full Stop Work Order Violation for... unpermitted excavation and demolition.

413 17th Street appears to have had its cellar dug out... Anyone know what's happened to the older gentleman who resides there?   I have not seen him in some time.   DOB records show no applications filed or permits drawn.  Does not appear to have been sold either, at least no new deeds filed on ACRIS.
I love this old house for the way he maintains the front stoop in a metalic shiny polished paint color that he must have mixed himself.

Caliper Architect Begins Gut Renovation on Prospect Avenue.

   Funny, just put a big "one" in front of the address...410 Prospect Avenue  sells for $1,410,000.  Eva M. Daniels Realty listed this two family located mid block between 7th and 8th Avenues back in December 2012 for  $1.499 million.  Looks like it sold sometime in March of 2013 with ACRIS showing the deed filed the 16th of April.  Records indicate the property was bought by principal architect Stephen Lynch, (AIA, LEED AP) of Brooklyn based Caliper Architecture PC.  Caliper Architecture and their fabrication/design partners Caliper Studio are responsible for the newly constructed Nitehawk Cinema in Williamsburg.

DOB filings indicate the building will remain a two family.