This dataset was created to make information about NYC's rent stabilized apartments more accessible to the public. Currently, information on rent stabilization in NYC is only published in aggregate by borough, leaving little information about specific buildings available. By parsing tax bill data about buildings contained in Notice of Property Value (NoPV) documents, which are available publicly in pdf format, this dataset is able to get a building-by-building count of rent stabilized units in NYC. See more about why this dataset was created here.