20150325 11575000 1.0 TRUE In January, 2014, Data Driven Detroit (D3) purchased a license of the Valassis Corporation's VNEF Plus database to receive quarterly updates of address-level vacancy data. Though the address-level data are restricted by confidentiality clauses, D3 processed and aggregated this database to the Census block-level to provide high-resolution tracking of structure vacancy in Detroit across time. The dataset contains data on the number and percent of vacant structures (with whether a parcel contains a structure identified by Motor City Mapping survey data) in each of the nearly 16,000 Census blocks in Detroit. The data span the timeframe from Q4 2013 through Q4 2014. <a href='http://datadrivendetroit.org/web_ftp/motorcitymapping/Metadata/QuarterlyVacancy_BlockLevel/Metadata_BlockLevel_VacancyAggregations.xls' style='line-height: 1.38461538461538;' target='_blank'>Field description metadata</a> and a <a href='http://datadrivendetroit.org/web_ftp/motorcitymapping/Metadata/QuarterlyVacancy_BlockLevel/Narrative_BlockLevel_VacancyAggregations_Final.pdf' target='_blank'>narrative summary</a> providing further detail on the creation of the dataset are also available for download. Census BlockVacancyStructuresValassis CorporationDetroitChangeProperty; Land Use and Housing This file displays data on structure vacancy in the nealry 16,000 Census blocks in the City of Detroit. The data are sourced from the Valassis Corporation's VNEF Plus database and cover five quarters from Q4 2013 through Q4 2014. Valassis Corporation, VNEF Plus Database; Motor City Mapping, 2014; Data Driven Detroit. <a href='http://creativecommons.org/licenses/by-sa/4.0/'><img alt='Creative Commons License' src='https://i.creativecommons.org/l/by-sa/4.0/88x31.png' style='border-width:0' /></a> This work is licensed under a <a href='http://creativecommons.org/licenses/by-sa/4.0/'>Creative Commons Attribution-ShareAlike 4.0 International License</a>. 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