If your apartment is rent regulated you should not have problems renewing the lease. Many HDFC coops have rent regulated tenants occupying apartments since most were converted by NYC under non-evict terms.
However, if you are subletting legally from an HDFC shareholder and the coop has term limits on subleasing you may have a problem as the coop may require the shareholder to occupy the apartment. Many HDFC coops have liberal sublet policies that allow unlimited rentals. They may charge the shareholder a maintenance premium.
Unfortunately liberal subletting in a coop/condo is a detriment to the shareholder/owners rather than the renters. The owners will have problems selling their apartments if there are too many renters in the buildng since most lenders/banks won't give loans in buildings with a large percentage of renters.
Mitchell Hall, Associate Broker
The Corcoran Group