Block Report

4100 Block of Knorr St

46 properties on this block in Philadelphia.

View property grades, violation history, tax delinquencies, ownership transfers, title risk scores, and safety data for all 46 properties on the 4100 Block of Knorr St.

About this block

The 4100 block of Knorr St contains 46 properties tracked on KnowMyBlock, with an average grade of A. Construction dates range from 1950 to 1950. There are 5 open code violations across the block. The block has seen 38 ownership transfers in the last five years. 46 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 7% of its parcels.

All properties on this block (46)

Address	Year	Owner-occ	Grade
4100 Knorr St	1950	Yes	A
4100 Knorr St	1950	Yes	A
4100 Knorr St	1950	Yes	A
4100 Knorr St	1950	Yes	A
4100 Knorr St	1950	Yes	A
4100 Knorr St	1950	Yes	A
4100 Knorr St	1950	Yes	A
4100 Knorr St	1950	Yes	A
4100 Knorr St	1950	Yes	B
4100 Knorr St	1950	Yes	A

Show all 46 properties

Address	Year	Open viol	Owner-occ	Grade
4100 Knorr St	1950	0	Yes	A
4101 Knorr St	1950	0	Yes	A
4103 Knorr St	1950	0	Yes	A
4105 Knorr St	1950	0	Yes	A
4107 Knorr St	1950	0	Yes	A
4109 Knorr St	1950	0	Yes	B
4111 Knorr St	1950	0	Yes	A
4113 Knorr St	1950	0	Yes	A
4115 Knorr St	1950	0	Yes	A
4117 Knorr St	1950	0	Yes	A
4119 Knorr St	1950	0	Yes	A
4120 Knorr St	1950	0	Yes	A
4120 Knorr St	1950	0	Yes	A
4120 Knorr St	1950	0	Yes	A
4120 Knorr St	1950	0	Yes	A
4120 Knorr St	1950	0	Yes	A
4120 Knorr St	1950	0	Yes	A
4120 Knorr St	1950	0	Yes	A
4120 Knorr St	1950	0	Yes	A
4120 Knorr St	1950	3	Yes	C
4120 Knorr St	1950	0	Yes	A
4120 Knorr St	1950	0	Yes	A
4121 Knorr St	1950	0	Yes	A
4123 Knorr St	1950	0	Yes	A
4125 Knorr St	1950	0	Yes	A
4127 Knorr St	1950	0	Yes	A
4129 Knorr St	1950	1	Yes	B
4131 Knorr St	1950	0	Yes	A
4133 Knorr St	1950	0	Yes	A
4135 Knorr St	1950	0	Yes	A
4137 Knorr St	1950	0	Yes	A
4139 Knorr St	1950	0	Yes	A
4141 Knorr St	1950	0	Yes	A
4143 Knorr St	1950	0	Yes	A
4145 Knorr St	1950	0	Yes	A
4147 Knorr St	1950	1	Yes	C

Recent block activity

2027-05-31License expired · 4143 Knorr St
2027-02-28License expired · 4120 Knorr St
2026-11-19License expired · 4120 Knorr St
2026-08-22License expired · 4101 Knorr St
2026-06-21Tax delinquency recorded · 4100 Knorr St
2026-06-21Tax delinquency recorded · 4120 Knorr St
2026-06-21Tax delinquency recorded · 4109 Knorr St
2026-06-21Tax delinquency recorded · 4147 Knorr St
2026-04-02Transferred · 4100 Knorr St
2026-03-18Transferred · 4109 Knorr St
2026-03-17Transferred · 4117 Knorr St
2026-03-13Transferred · 4117 Knorr St

Block health comparison

Scope	Avg grade	Open viol/property
Block	A	0.11
Street	A	0.05
ZIP 19135	A	0.11
Citywide	—	—