Beginning in 1949, federal law allowed cities across the country to declare that a piece of land was “blighted” - a subjective determination made by government agencies that often led to the displacement of low-income people of color. Cities could then acquire the “blighted” land, relocate the people living there, raze the homes and buildings that were already in place, and make way for new public and private development. Development in the plan areas sometimes happened, like Lincoln Center, and sometimes didn’t, like many still-vacant lots in East New York and Bushwick.

Many urban renewal plans remain active today, and where they exist, they set restrictions on what can be built in an area. Some expired plans imposed restrictions on development that last past the expiration, too (though this is very rare). 

Properties that fall within designated urban renewal areas have that information on their individual property pages, which are updated automatically from the Urban Reviewer. This information can lead you to promises that the government made about particular properties that you can organize around.

In 2018, NYC Department of Housing Preservation and Development published its own online tool to make urban renewal area information more available to the public. The HPD page includes a map and list of the plans, but unlike the Urban Reviewer, it does not show the planned use of each parcel.

If a property you are looking at is in an Urban Renewal Area, you should look closely at the deeds and urban renewal docuements available for it in ACRIS and HPD records. These might limit what kind of development or demolition can happen, or when. A proposal that includes elecments that contradict an existing Urban Renewal Area Plan might require the plan to be revised; this revision is a big land use change that will need to go though the City's Uniform Land Use Review Procedure.