- Glossary
- /J-51
NYC rental glossary
J-51
A NYC tax-exemption-and-abatement program for building rehabilitation that historically brought units into rent stabilization.
J-51 is a New York City tax incentive that rewards owners for rehabilitating residential buildings — major renovations, conversions, and capital upgrades — with a property-tax exemption on the added value plus an abatement of part of the renovation cost. In exchange, units in a building receiving J-51 benefits are generally subject to rent stabilization for the life of the benefit.
The program lapsed and was revived in revised form; the through-line for a brokerage is that J-51 benefits and rent regulation travel together. A unit that looks free-market can in fact be stabilized because its building is taking a J-51 benefit, and tenants have litigated exactly that point successfully.
When the public tax record shows a J-51 benefit on a building, treat the regulatory status of its units as a question to resolve, not an assumption.
Related terms
- 421-aA NYC tax exemption for new residential construction that requires the developer to rent-stabilize units for the benefit period.
- Rent StabilizationA NYC regulatory system that caps annual rent increases and grants tenants a near-automatic right to renew their lease.
- Legal Regulated RentThe maximum lawful rent for a rent-regulated unit, registered with the state and built up from a base plus permitted increases.
- DHCR (Division of Housing & Community Renewal)The New York State agency that administers rent regulation — registering legal rents and adjudicating overcharge complaints.
This definition is general information about a New York City rental or rent-regulation concept, not legal advice. The rules change and often turn on facts specific to a building, unit, and tenancy — confirm the current rule and consult a qualified attorney before acting on any individual matter.