Block Report

4800 Block of Knorr St

22 properties on this block in Philadelphia.

View property grades, violation history, tax delinquencies, ownership transfers, title risk scores, and safety data for all 22 properties on the 4800 Block of Knorr St.

About this block

The 4800 block of Knorr St contains 22 properties tracked on KnowMyBlock, with an average grade of A. Construction dates range from 1917 to 1920. There are 2 open code violations across the block. The block has seen 29 ownership transfers in the last five years. 21 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 23% of its parcels.

All properties on this block (22)

AddressYearOpen violOwner-occGrade
4800 Knorr St19170YesA
4801 Knorr St19202YesF
4802 Knorr St19200YesA
4803 Knorr St19200YesA
4804 Knorr St19200YesB
4805 Knorr St19200YesA
4806 Knorr St19200YesA
4807 Knorr St19200YesA
4808 Knorr St19200YesA
4809 Knorr St19200YesA
Show all 22 properties
AddressYearOpen violOwner-occGrade
4810 Knorr St19200YesA
4811 Knorr St19200YesA
4812 Knorr St19200YesA
4813 Knorr St19200YesA
4814 Knorr St19200YesA
4815 Knorr St19200YesA
4816 Knorr St0YesB
4817 Knorr St19200YesA
4818 Knorr St19200YesA
4819 Knorr St19200YesA
4821 Knorr St19200YesA
4823 Knorr St19200YesA

Recent block activity

  1. 2027-02-28License expired · 4806 Knorr St
  2. 2026-08-07License expired · 4800 Knorr St
  3. 2026-06-21Tax delinquency recorded · 4801 Knorr St
  4. 2026-03-05Inspection · 4801 Knorr St
  5. 2026-03-01Tax delinquency recorded · 4811 Knorr St
  6. 2026-03-01Tax delinquency recorded · 4801 Knorr St
  7. 2026-02-10License issued · 4806 Knorr St
  8. 2026-02-05License issued · 4800 Knorr St
  9. 2025-11-24Inspection · 4801 Knorr St
  10. 2025-09-24Complaint closed · 4800 Knorr St
  11. 2025-09-03Complaint filed · 4800 Knorr St — Property Maintenance High Weeds
  12. 2025-08-13Inspection · 4801 Knorr St

Block health comparison

ScopeAvg gradeOpen viol/property
BlockA0.09
StreetA0.05
ZIP 19135A0.11
Citywide