Stuart Kalmenson, who has lived in the building for 19 years, is the only tenant left. Leonardo Munoz “I had the choice of either getting bullied, or fighting the good fight,” Kalmenson said.

The 6-foot-7-inch, 380-pound defensive end wants to transform the nine-unit West 89th Street building into his own luxury townhouse — but 5-foot-6 data analyst Stuart Kalmenson stands in his way.