IH

Inclusionary Housing is the umbrella for New York City's programs tying floor area to affordable housing, and specifically the older voluntary program that predates Mandatory Inclusionary Housing. Under the voluntary program — historically concentrated in the city's highest-density residence districts and designated areas — a project may build beyond its base floor-area ceiling by providing qualifying affordable housing, with the bonus mechanics governed by § 23-154 of the Zoning Resolution and the program's rules for on-site, off-site, and preservation compliance.

Because participation is optional, the voluntary program operates where the bonus economics work. It coexists with MIH: one is an offer, the other a mapped requirement, and a given lot may be subject to either, both frameworks in different respects, or neither.