{"asOf":"2026-07-10T00:53:00.465Z","block":"15000-15099 KELVIN AVE","blockUrl":"https://blockreport.homes/block/15000-15099-kelvin-ave","address":"15037 KELVIN AVE","parcelNumber":"583139610","source":"https://property.phila.gov/?p=583139610","ownerType":"owner-occupied","kind":"house","isHouse":true,"residential":true,"taxExempt":false,"institutional":false,"buildingClass":"DET W/D GAR 2 STY FRAME","useLabel":"House","owner":"ROBERTO LOUIS","marketValue":438100,"livableArea":1516,"yearBuilt":1961,"lastSale":{"price":155000,"date":"2001-10-15T04:00:00Z"},"openViolations":0,"taxOwed":0,"lat":40.129194132578384,"lng":-75.00365427067851,"geom":{"type":"Polygon","coordinates":[[[-75.003991629,40.129273328],[-75.003850193,40.129422689],[-75.003314397,40.129113082],[-75.003461364,40.128966918],[-75.003991629,40.129273328]]]},"zip":"19116","beds":null,"baths":null,"stories":2,"lotArea":13164,"zoning":"RSD1","grade":"C","basement":null,"heater":null,"centralAir":null,"extCond":"4","intCond":"4","garage":1,"homestead":true,"mail":"15037 KELVIN AVE, PHILADELPHIA PA, 19116","mailOut":false,"appeals":[],"taxYears":[],"taxNet":0,"taxLien":false,"timesSold":2,"abated":false,"valueSeries":[{"y":2016,"v":228000,"taxable":198000},{"y":2017,"v":228000,"taxable":198000},{"y":2018,"v":228000,"taxable":198000},{"y":2019,"v":282800,"taxable":242800},{"y":2020,"v":295300,"taxable":250300},{"y":2021,"v":295300,"taxable":250300},{"y":2022,"v":295300,"taxable":250300},{"y":2023,"v":303200,"taxable":223200},{"y":2024,"v":303200,"taxable":223200},{"y":2025,"v":417600,"taxable":317600},{"y":2026,"v":417600,"taxable":317600},{"y":2027,"v":438100,"taxable":338100}],"taxNow":4733,"familyHeld":false,"storyTag":"Traded","storyDelta":-0.47,"timeline":[{"y":2001,"k":"sale","p":290000},{"y":2001,"k":"sale","p":155000}],"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 $303,200 to $417,600","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."}]}