{"asOf":"2026-07-10T00:53:00.465Z","block":"15000-15099 KELVIN AVE","blockUrl":"https://blockreport.homes/block/15000-15099-kelvin-ave","address":"15035 KELVIN AVE","parcelNumber":"583139360","source":"https://property.phila.gov/?p=583139360","ownerType":"owner-occupied","kind":"house","isHouse":true,"residential":true,"taxExempt":false,"institutional":false,"buildingClass":"DET W/D GAR 1.5 STY FRAME","useLabel":"House","owner":"GRAFF JOHN F","marketValue":574100,"livableArea":2232,"yearBuilt":1988,"lastSale":{"price":1,"date":"2017-02-16T05:00:00Z"},"openViolations":0,"taxOwed":0,"lat":40.12898033855091,"lng":-75.00270102001554,"geom":{"type":"Polygon","coordinates":[[[-75.004011393,40.129252457],[-75.003991629,40.129273328],[-75.003461364,40.128966918],[-75.00333594,40.128956605],[-75.003165153,40.12897814],[-75.003040062,40.128962407],[-75.002974056,40.128998462],[-75.002836498,40.128918578],[-75.002290282,40.129481202],[-75.002005173,40.12931549],[-75.002770618,40.128525308],[-75.004011393,40.129252457]]]},"zip":"19116","beds":3,"baths":null,"stories":2,"lotArea":50816,"zoning":"RSD1","grade":"C","basement":null,"heater":"A","centralAir":true,"extCond":"3","intCond":"4","garage":2,"homestead":true,"mail":"15035 KELVIN AVE, PHILADELPHIA PA, 19116","mailOut":false,"appeals":[],"taxYears":[],"taxNet":0,"taxLien":false,"timesSold":1,"abated":false,"valueSeries":[{"y":2016,"v":233800,"taxable":233800},{"y":2019,"v":292000,"taxable":292000},{"y":2020,"v":304900,"taxable":304900},{"y":2021,"v":304900,"taxable":304900},{"y":2022,"v":304900,"taxable":304900},{"y":2023,"v":369800,"taxable":289800},{"y":2024,"v":369800,"taxable":289800},{"y":2025,"v":509600,"taxable":409600},{"y":2026,"v":509600,"taxable":409600},{"y":2027,"v":574100,"taxable":474100}],"taxNow":6636,"familyHeld":true,"storyTag":"Improved","storyDelta":null,"timeline":[{"y":2016,"k":"sale","p":85000},{"y":2016,"k":"permit","w":"Zoning/use"},{"y":2016,"k":"permit","w":"Demolition"},{"y":2016,"k":"demo"},{"y":2016,"k":"permit","w":"Zoning"},{"y":2016,"k":"permit","w":"Zoning"}],"rented":false,"signals":[{"kind":"permit-mismatch","level":"watch","title":"Assessment/permit mismatch","summary":"The assessment jumped 38% in 2025, but no matching permit appears in the property timeline.","evidence":["assessment moved from $369,800 to $509,600","no permit shown in 2024-2026"],"caveat":"Not proof of unpermitted work; reassessment, corrected data, or a permit under another parcel can also explain it."}]}