Who decides what a parcel can be used for
Zoning in New York is local. In New York City, the Zoning Resolution sets the rules, the Department of City Planning and the City Planning Commission shape changes to them, and the Board of Standards and Appeals hears many requests for variances and special permits. Larger changes, such as rezonings, can go through a public review process involving community boards and the City Council. Outside the city, towns, villages, and cities have their own zoning codes, planning boards, and zoning boards of appeals. Environmental review under state law can apply to many approvals. When a use is not allowed as of right, the paths usually run through a variance, a special permit, or a rezoning, and the standards for each differ.
Facts to pin down early
Get the current deed, the survey, and the certificate of occupancy if the building has one, since in New York City the certificate describes the lawful use and occupancy. Check open building violations and the permit history. If a use existed before the current rules, documentation showing it has continued without a long break can matter, because a nonconforming use can be lost if it is discontinued. For a neighbor's project, collect the public notices and hearing dates, because challenges to many local land use decisions must be filed within a short period after the decision.
Planning the approach
The first conversation is about the outcome you need and whether it fits within existing rules, needs a discretionary approval, or should be rethought. We look at which agency has jurisdiction, what the public process may look like, and where architects, engineers, or planners will need to be involved. For opponents of a project, we discuss the record that has to be built at the hearing stage, because a later court challenge usually depends on that record. Land use work is often slow, and setting realistic expectations about the timeline at the start avoids decisions based on assumptions.