{"asOf":"2026-07-09T17:02:38.651Z","block":"4700-4799 KNORR ST","blockUrl":"https://blockreport.homes/block/4700-4799-knorr-st","address":"4709 KNORR ST","parcelNumber":"412020100","source":"https://property.phila.gov/?p=412020100","ownerType":"absentee","kind":"multi-family","isHouse":false,"residential":true,"taxExempt":false,"institutional":false,"buildingClass":"ROW CONV/APT 2 STY MASON","useLabel":"Apartment building","owner":"DONG TING TING","coOwner":"LIN ZUN XIN","marketValue":211200,"livableArea":1320,"yearBuilt":1920,"lastSale":{"price":133500,"date":"2021-07-20T04:00:00Z"},"openViolations":0,"violYears":[{"y":2014,"n":1,"worst":null}],"taxOwed":0,"lat":40.025045839472455,"lng":-75.04431923509307,"geom":{"type":"Polygon","coordinates":[[[-75.04419232,40.025085877],[-75.044416372,40.024971156],[-75.04444574,40.02500612],[-75.044222294,40.025120372],[-75.04419232,40.025085877]]]},"zip":"19135","beds":2,"baths":2,"stories":2,"lotArea":1125,"zoning":"RSA5","grade":"C","basement":"D","heater":"B","centralAir":false,"extCond":"4","intCond":"4","garage":null,"homestead":false,"mail":"773 SWITCHMAN RD, MEDIA PA, 19063","mailOut":true,"appeals":[],"taxYears":[],"taxNet":0,"taxLien":false,"timesSold":4,"abated":false,"valueSeries":[{"y":2016,"v":102500,"taxable":102500},{"y":2017,"v":102500,"taxable":102500},{"y":2018,"v":102500,"taxable":102500},{"y":2019,"v":97100,"taxable":97100},{"y":2020,"v":101200,"taxable":101200},{"y":2021,"v":101200,"taxable":101200},{"y":2022,"v":101200,"taxable":101200},{"y":2023,"v":171700,"taxable":171700},{"y":2024,"v":171700,"taxable":171700},{"y":2025,"v":199600,"taxable":199600},{"y":2026,"v":199600,"taxable":199600},{"y":2027,"v":211200,"taxable":211200}],"taxNow":2956,"familyHeld":true,"storyTag":"Frequently traded","storyDelta":2.34,"timeline":[{"y":2004,"k":"sale","p":40000},{"y":2014,"k":"viol","w":"L&I violation"},{"y":2017,"k":"sale","p":73500},{"y":2018,"k":"sale","p":73500},{"y":2021,"k":"sale","p":133500}],"rented":true,"units":2,"signals":[{"kind":"permit-mismatch","level":"watch","title":"Assessment/permit mismatch","summary":"The assessment jumped 70% in 2023, but no matching permit appears in the property timeline.","evidence":["assessment moved from $101,200 to $171,700","no permit shown in 2022-2024"],"caveat":"Not proof of unpermitted work; reassessment, corrected data, or a permit under another parcel can also explain it."}]}