NYC 421-a Tax Abatement: Eligibility, Affordable Housing Requirements, 485-w Replacement, and Applications
11 min read · Updated 2025-01-15
NYC 421-a tax abatement guide: who qualifies, affordability requirements by coverage area, the 485-w replacement program, construction wage requirements, and how to apply.
421-a and 485-w Abatement Programs
What was the 421-a tax abatement and how did it work?
421-a was New York State's primary tax incentive for new residential construction in NYC. It provided a property tax exemption for qualifying new multifamily residential buildings for periods ranging from 10 to 35 years, depending on the building's location and the affordability commitments made by the developer. The exemption phased out over the last years of the term. 421-a was enormously influential in stimulating NYC residential construction but was controversial because many argued the subsidy did not produce enough affordable housing relative to its cost.
Is 421-a still available?
421-a (in its last iteration as "421-a(16)") expired in June 2022 after the state legislature failed to agree on a replacement or extension. Projects that had already begun construction and met the prior commencement requirements before June 2022 may still qualify for the exemption, but new projects starting after that date cannot access 421-a. The state and city have been negotiating a replacement program, and the 485-w program was enacted as part of the 2024 state budget.
What is the 485-w program that replaced 421-a?
485-w is a new property tax exemption for multifamily rental housing in NYC enacted in 2024. Key features: (1) 35-year exemption term; (2) Applies to new construction that commences before a specified deadline; (3) Requires prevailing wages to be paid to all construction workers (a major departure from 421-a, which had limited wage requirements); (4) Requires specified percentages of units to be permanently affordable at AMI levels depending on location; (5) Administered jointly by the city and state. The prevailing wage requirement significantly increases construction costs.
How does the 485-w program's prevailing wage requirement work?
Under 485-w, developers who want the tax exemption must pay prevailing wages to all construction workers on the site — the wage rates set by the NYC Comptroller for each trade and occupation. This is estimated to increase construction costs by $50,000-$100,000+ per unit compared to non-prevailing wage projects. Developers who don't want to pay prevailing wages can build without the exemption, paying full property taxes from day one. The feasibility analysis for multifamily projects in NYC now turns significantly on whether the tax exemption justifies the wage premium.
What affordability requirements applied under 421-a?
Affordability requirements varied by location under 421-a. In "exclusionary" zones (most of Manhattan south of 96th Street and portions of other boroughs), developers had to provide an affordable housing set-aside to access the benefit. Requirements ranged from 20% of units at 80% AMI (Area Median Income) to deeper affordability in certain enhanced programs. In non-exclusionary areas, no affordability was required for shorter-term exemptions. The permanent affordability requirement under 485-w is deeper and more broadly applicable.
How does Area Median Income (AMI) work for affordable housing?
AMI is the median household income for the NYC metropolitan area, published annually by HUD. Affordable housing programs use AMI as a reference point: a unit affordable to households at 80% AMI means the rent is set so that a household earning 80% of AMI pays no more than 30% of their income in rent. Different programs target different AMI levels — luxury-adjacent inclusionary housing often targets 80-130% AMI, while deeper affordability programs serve 30-60% AMI households.
How do I apply for the 485-w tax exemption?
Applications are filed with HPD (for rental projects) or the NYC Department of Housing Finance (HDC) depending on the project type. The application requires: project description, financing plan, affordability commitment, evidence of prevailing wage compliance plan, and filing before construction commencement. HPD and HDC review the application and, if approved, enter into a regulatory agreement with the developer specifying the affordability requirements for the term of the exemption. The regulatory agreement is recorded against the property.
What happens if a 421-a or 485-w building violates its affordability obligations?
Failure to maintain affordability requirements is a violation of the regulatory agreement, which can trigger: recapture of all or part of the tax benefits received (a large retroactive tax bill), loss of future exemption benefits, and HPD enforcement action. The regulatory agreement is recorded on the property and runs with the land, so buyers of 421-a buildings must understand and commit to the affordability obligations as a condition of purchase.