NYC-WTC_000187725

NYC 9/11 Public Portal Document

SI - 9 -j I i

58 Neighborhood Characteristics Neighborhood characteristics were attributed to the adjusted universe of parcel sales in the study area on a parcel-specific basis, using the community district code and the zip zone code assigned to each parcel as the primary neighborhood identifiers. Several sources of data were utilized in acquisition of these areawide characteristics. i ii o Selected socioeconomic characteristics of the 1980 Census of Population, which are compiled by New York City's community districts approximating neighborhood boundaries, were appended to each parcel record for the following variables: - median family income, 1979 - percent black and Hispance resident population, 1980 - percent of population in poverty, 1980 - percent total housing units vacant, 1980 - employed labor force per household, 1980 - average number of rooms, 1980 I - median housing rent, 1980 =^!' - median age of structure, 1980 - mean value of owner occupied dwellings, 1980 The community district data were obtained from MISLAND, a computerized management information system of the New York City Department of City Planning which processes Census data on a community district basis land use review and approval processes. o Supplemental neighborhood characteristics were obtained from administrative records of New York City and New York State. -H They were assigned to each parcel by other locational coordinates, such as zip zone codes or correspondence files which transformed the non-Census neighborhood characteristics into aggregates or averages for each community district. The following records of neighborhood characteristics were appended to each parcel record: - total employment covered by the State Employment Security Program, as reported by zip zones, 1987 - reported crime rates (rape, robbery, assault, burglary) 3-[1 by police precincts, 1987 - elementary reading scores, by school districts, 1987 - traffic counts at major commercial intersection, by air quality zones, 1987 - vacant housing units, as reported by electric utility metering program, 1987 The supplemental neighborhood data were obtained separately from each program administrator. The adjusted transactions file of 86,300 parcel records with complete physical and neighborhood characteristics was subject to

L CITY_21MC100_006662289

NYC-WTC_000187789