{"asOf":"2026-07-09T11:41:58.076Z","block":"500-599 MERCY ST","blockUrl":"https://blockreport.homes/block/500-599-mercy-st","address":"521 MERCY ST","parcelNumber":"392054905","source":"https://property.phila.gov/?p=392054905","ownerType":"owner-occupied","owner":"SUMBWE MAMBWE","marketValue":452700,"livableArea":1890,"yearBuilt":2023,"lastSale":{"price":480000,"date":"2023-03-08T05:00:00Z"},"openViolations":0,"violYears":[{"y":2020,"n":2,"worst":null}],"taxOwed":0,"lat":39.923149454711094,"lng":-75.15579302020018,"geom":{"type":"Polygon","coordinates":[[[-75.155781405,39.923086052],[-75.155830644,39.923092351],[-75.155804636,39.923212857],[-75.155755396,39.923206558],[-75.155781405,39.923086052]]]},"zip":"19148","beds":4,"baths":null,"stories":3,"lotArea":623,"zoning":"RSA5","grade":null,"basement":"A","heater":"A","centralAir":true,"extCond":"1","intCond":"1","garage":null,"homestead":false,"appeals":[],"taxYears":[],"taxNet":0,"taxLien":false,"timesSold":3,"abated":true,"valueSeries":[{"y":2016,"v":9500,"taxable":0},{"y":2017,"v":36200,"taxable":0},{"y":2018,"v":36200,"taxable":0},{"y":2019,"v":36200,"taxable":0},{"y":2020,"v":36200,"taxable":0},{"y":2021,"v":36200,"taxable":0},{"y":2022,"v":36200,"taxable":36200},{"y":2023,"v":71900,"taxable":71900},{"y":2024,"v":71900,"taxable":71900},{"y":2025,"v":446900,"taxable":89380},{"y":2026,"v":446900,"taxable":89380},{"y":2027,"v":452700,"taxable":90540}],"taxNow":1267,"familyHeld":false,"storyTag":"New construction","storyDelta":null,"timeline":[{"y":2020,"k":"land","p":25000},{"y":2020,"k":"viol","w":"2 L&I violations"},{"y":2020,"k":"permit","w":"New construction, addition, GFA change"},{"y":2021,"k":"permit","w":"New Construction"},{"y":2021,"k":"land","p":112000},{"y":2022,"k":"permit","w":"New Construction"},{"y":2022,"k":"permit","w":"New Construction"},{"y":2022,"k":"permit","w":"New Construction or Additions"},{"y":2022,"k":"permit","w":"New Construction or Additions"},{"y":2022,"k":"permit","w":"New Construction"},{"y":2022,"k":"permit","w":"New Construction or Additions"},{"y":2023,"k":"sale","p":480000}],"rented":false}