Holy crap. If I owned one of these, I'd also let it fall into disrepair until the city condemned it, then build literally anything else:<p>> <i>Any time a tenant vacated, landlords received a “vacancy bonus” that let them increase the rent of the unit by up to 20%, and once an apartment’s rent reached a certain dollar amount — most recently, $2,774 a month — the unit left the rent-regulation system entirely, allowing the landlord to rent it at any price.</i><p>$2774 / month is definitely less than I'd want to charge to deal with a tenant that cannot be evicted, but whose apartment must be maintained using labor priced for NYC. I'd guess most of the apartments that are being held off-market are way below that threshold, and also need substantial repairs.