NYC J-51 R Sunsetting June 29, 2026: The Property Tax Abatement Co-op Boards and Rental Owners Are About to Lose (Walkthrough, Forms, and the 4-Month Filing Clock)

J-51 R, the relaunched property tax abatement for rehabilitating NYC rental, co-op, and condo buildings, expires for work completed after June 29, 2026. Here is the plain-English walkthrough of who qualifies, the forms HPD requires, the $1,000 application fee, the four-month filing clock, and what your bill actually sees from the Department of Finance.