Block Report

4200 Block of Knorr St

16 properties on this block in Philadelphia.

View property grades, violation history, tax delinquencies, ownership transfers, title risk scores, and safety data for all 16 properties on the 4200 Block of Knorr St.

About this block

The 4200 block of Knorr St contains 16 properties tracked on KnowMyBlock, with an average grade of A. Construction dates range from 1950 to 1957. There are currently no open code violations on the block. The block has seen 13 ownership transfers in the last five years. 15 properties on the block were built before 1978 and may carry lead-paint risk under Philadelphia's lead disclosure ordinance. The top three property owners on this block control approximately 19% of its parcels.

All properties on this block (16)

AddressYearOpen violOwner-occGrade
4201 Knorr St0YesD
4203 Knorr St19500YesA
4205 Knorr St19500YesA
4207 Knorr St19500YesA
4209 Knorr St19500YesA
4211 Knorr St19500YesA
4213 Knorr St19500YesA
4215 Knorr St19570YesA
4217 Knorr St19500YesA
4219 Knorr St19500YesA
4221 Knorr St19500YesA
4223 Knorr St19500YesA
4225 Knorr St19500YesA
4227 Knorr St19500YesA
4229 Knorr St19500YesA
4231 Knorr St19500YesA

Recent block activity

  1. 2026-06-21Tax delinquency recorded · 4201 Knorr St
  2. 2026-06-09Complaint closed · 4203 Knorr St
  3. 2026-05-29Complaint filed · 4203 Knorr St — Property Maintenance High Weeds
  4. 2026-03-23Complaint closed · 4215 Knorr St
  5. 2026-03-01Tax delinquency recorded · 4201 Knorr St
  6. 2026-02-19Complaint filed · 4215 Knorr St — Encroaching Trees
  7. 2026-02-19Complaint filed · 4215 Knorr St — Encroaching Trees
  8. 2026-01-22Transferred · 4227 Knorr St
  9. 2025-11-13Transferred · 4211 Knorr St
  10. 2025-09-26Transferred · 4227 Knorr St
  11. 2025-05-08Transferred · 4227 Knorr St
  12. 2025-05-08Transferred · 4227 Knorr St

Block health comparison

ScopeAvg gradeOpen viol/property
BlockA0.00
StreetA0.05
ZIP 19135A0.11
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