How Multifamily Housing Gets Approved in New York City

New York City multifamily development sits at the intersection of citywide zoning rules and site specific land use review. The Universal Affordability Preference and Mandatory Inclusionary Housing set the affordability terms for added floor area, the 485-x tax incentive sets the terms for a property tax exemption, and the Uniform Land Use Review Procedure determines which projects need a public vote before a building permit can issue.

Zoning capacity: UAP and MIH

The Universal Affordability Preference (UAP) took effect in December 2024 under the New York City Zoning Resolution. It applies in R6 through R10 residence districts and allows a development to add floor area, generally up to 20 percent more than the district's base maximum, where the added units are permanently affordable (ZR Section 27-16). The affordable units must serve households at a weighted average of 60 percent of Area Median Income (AMI), across no more than three income bands, with no band above 100 percent AMI; on sites with 10,000 square feet or more of affordable floor area, at least 20 percent of that floor area must sit at or below 40 percent AMI. UAP units must be distributed through most of a building's stories and most of the bedroom mix, not concentrated on a few floors or at the smallest sizes (ZR Section 27-16(b) and (c)).

Mandatory Inclusionary Housing (MIH), also updated in December 2024, applies only within MIH Areas mapped through a rezoning reviewed under ULURP (ZR Section 27-10). A qualifying new development, enlargement or conversion above 10 units and 12,500 square feet must set aside 20 to 30 percent of residential floor area as permanently affordable, from 25 percent at a 60 percent AMI weighted average to 30 percent at a 115 percent AMI weighted average (ZR Section 27-131). UAP applies directly in R6 through R10 without a separate rezoning; MIH applies only where a prior rezoning mapped an MIH Area, and the two can apply together on one site.

Parking mandates near transit

City of Yes for Housing Opportunity replaced a single citywide parking formula with a three tier system tied to transit access. New residential development needs no parking in the Inner Transit Zone, which includes the Manhattan Core and the Long Island City Parking Area; a reduced share in the Outer Transit Zone; and largely the prior mandate beyond the Greater Transit Zone, with exemptions for accessory dwelling units, conversions, affordable housing and certain transit oriented and town center developments. An R6 district development that previously needed parking for 50 percent of its units now needs none in the Inner Transit Zone and 25 percent in the Outer Transit Zone.

The 485-x tax incentive

The 485-x property tax exemption (RPTL Section 485-x) applies to new construction and qualifying conversions of six or more units commenced between June 15, 2022 and June 15, 2034, completed by June 15, 2038. Projects choose one of four affordability options at application: Option A, 25 percent of units at an 80 percent AMI weighted average for 100 or more units (35 years), or 60 percent AMI for 150 or more units in a designated Zone A or Zone B (40 years); Option B, 20 percent of units at an 80 percent AMI weighted average for 6 to 99 units (35 years); Option C, 50 percent of units rent stabilized for 6 to 10 units outside Manhattan (10 years); Option D, for homeownership projects of six or more units, an assessed value cap of 89 dollars per square foot and five years of owner occupancy (20 years). Projects of 100 or more units must pay construction workers at least 40 dollars per hour, rising 2.5 percent per year from July 1, 2025; projects of 150 or more units in Zone A or Zone B pay a higher rate tied to the prevailing wage, also rising 2.5 percent per year.

Who approves what: DOB permits and ULURP

A project that meets the applicable district's use, bulk, parking and affordability regulations can apply for permits directly with the Department of Buildings. A project that needs a zoning map or text change, a special permit, or another discretionary land use action is reviewed under the Uniform Land Use Review Procedure (ULURP), set out in New York City Charter Section 197-c. After the Department of City Planning certifies an application complete, review proceeds through a Community Board (60 days), the Borough President (30 days), the City Planning Commission (a public hearing and vote within 60 days of the Borough President's period), the City Council (50 days) and the Mayor (5 days), spanning about seven months before the pre-certification application and environmental review period.

Questions

Do UAP and MIH apply to the same project in New York City?

They can. UAP is available directly in R6 through R10 districts without a separate rezoning, while MIH applies only within an MIH Area created through a prior rezoning reviewed under ULURP; a site inside a mapped MIH Area can use both provisions together.

What affordability tiers does 485-x offer?

RPTL Section 485-x sets four options at application: Option A (100 or more units, or 150 or more units in Zone A or B), Option B (6 to 99 units), Option C (6 to 10 units, outside Manhattan) and Option D (homeownership), each with its own AMI target, set aside share and exemption period.

How long does ULURP take in New York City?

The certified review stages set out at NYC Charter Section 197-c, Community Board, Borough President, City Planning Commission, City Council and Mayor, span about seven months in total, not counting the application and environmental review period before certification.

Sources