Abstract
This analysis examines the spatial relationships between historic districts and demolition permits in Philadelphia, a post-industrial city experiencing growth after decades of decline. We describe the spatial and temporal aspects of National Register and local historic districts, map the patterns of public and private sector demolition (2007–2021), and compare the demolition rates within and around historic districts. We find lower rates of demolitions within local historic districts as compared with the surrounding areas. However, this pattern does not hold among National Register districts, suggesting that stronger protections afforded by local ordinances are particularly important for places experiencing development pressure.
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