Block Report

800 Block of N 21st St

86 properties on this block in Philadelphia.

View property grades, violation history, tax delinquencies, ownership transfers, title risk scores, and safety data for all 86 properties on the 800 Block of N 21st St.

About this block

The 800 block of N 21St St contains 86 properties tracked on KnowMyBlock, with an average grade of A. Construction dates range from 1920 to 1935. There are 6 open code violations across the block. The block has seen 81 ownership transfers in the last five years. 86 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 (50)

Address	Year	Open viol	Owner-occ	Grade
800 N 21st St	1920	0	Yes	A
801 N 21st St	1920	0	Yes	B
802 N 21st St	1920	0	Yes	A
803 N 21st St	1920	0	Yes	A
804 N 21st St	1920	0	Yes	A
805 N 21st St	1920	0	Yes	A
806 N 21st St	1920	0	Yes	A
807 N 21st St	1920	0	Yes	B
808 N 21st St	1920	0	Yes	A
809 N 21st St	1920	6	Yes	C

Show all 50 properties

Address	Year	Owner-occ	Grade
810 N 21st St	1920	Yes	A
811 N 21st St	1920	Yes	A
812 N 21st St	1920	Yes	A
813 N 21st St	1920	Yes	A
814 N 21st St	1920	Yes	A
815 N 21st St	1920	Yes	A
816 N 21st St	1920	Yes	B
817 N 21st St	1920	Yes	A
818 N 21st St	1920	Yes	A
819 N 21st St	1920	Yes	A
820 N 21st St	1920	Yes	A
821 N 21st St	1920	Yes	A
822 N 21st St	1920	Yes	A
823 N 21st St	1920	Yes	A
824 N 21st St	1920	Yes	A
825 N 21st St	1920	Yes	A
826 N 21st St	1920	Yes	A
827 N 21st St	1920	Yes	A
828 N 21st St	1920	Yes	A
829 N 21st St	1920	Yes	A
830 N 21st St	1920	Yes	A
831 N 21st St	1920	Yes	A
832 N 21st St	1920	Yes	A
833 N 21st St	1920	Yes	A
834 N 21st St	1920	Yes	A
835 N 21st St	1920	Yes	A
836 N 21st St	1920	Yes	A
837 N 21st St	1920	Yes	A
838 N 21st St	1920	Yes	A
839 N 21st St	1920	Yes	A
845 N 21st St	1935	Yes	A
846 N 21st St	1935	Yes	A
847 N 21st St	1935	Yes	A
848 N 21st St	1935	Yes	A
849 N 21st St	1935	Yes	A
850 N 21st St	1935	Yes	A
851 N 21st St	1935	Yes	A
852 N 21st St	1935	Yes	A
853 N 21st St	1935	Yes	A
854 N 21st St	1935	Yes	A

Recent block activity

2027-02-28License expired · 857 N 21st St
2026-07-11License expired · 850 N 21st St
2026-06-21Tax delinquency recorded · 868 N 21st St
2026-06-21Tax delinquency recorded · 876 N 21st St
2026-03-27Transferred · 882 N 21st St
2026-03-01Tax delinquency recorded · 868 N 21st St
2026-03-01Tax delinquency recorded · 864 N 21st St
2026-02-28License expired · 881 N 21st St
2026-01-19Transferred · 872 N 21st St
2026-01-16Transferred · 808 N 21st St
2026-01-13License expired · 809 N 21st St
2026-01-05Permit issued · 868 N 21st St — Ez Roof Covering Replacement

Block health comparison

Scope	Avg grade	Open viol/property
Block	A	0.07
Street	B	0.27
ZIP 19130	A	0.10
Citywide	—	—