Block Report

800 Block of E Ontario St

45 properties on this block in Philadelphia.

View property grades, violation history, tax delinquencies, ownership transfers, title risk scores, and safety data for all 45 properties on the 800 Block of E Ontario St.

About this block

The 800 block of E Ontario St contains 47 properties tracked on KnowMyBlock, with an average grade of B. Construction dates range from 1910 to 1940. There are 17 open code violations across the block. The block has seen 33 ownership transfers in the last five years. 44 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 13% of its parcels.

All properties on this block (47)

Address	Year	Open viol	Owner-occ	Grade
800 E Ontario St	1910	0	Yes	B
801 E Ontario St	1920	0	Yes	A
803 E Ontario St	1920	0	Yes	C
805 E Ontario St	1920	0	Yes	A
807 E Ontario St	1920	0	Yes	A
809 E Ontario St	1920	2	Yes	B
811 E Ontario St	1920	0	Yes	A
813 E Ontario St	1920	0	Yes	A
815 E Ontario St	1920	0	Yes	A
817-19 E Ontario St	1920	0	Yes	A

Show all 47 properties

Address	Year	Open viol	Owner-occ	Grade
821 E Ontario St	1920	0	Yes	A
823 E Ontario St	1920	0	Yes	A
825 E Ontario St	1920	0	Yes	A
827 E Ontario St	1940	0	Yes	B
829 E Ontario St	1920	0	Yes	A
830 E Ontario St	1920	0	Yes	B
831 E Ontario St	1920	0	Yes	B
832 E Ontario St	1920	0	Yes	A
833 E Ontario St	1920	0	Yes	A
834 E Ontario St	1920	0	Yes	A
835 E Ontario St	1920	3	Yes	C
836 E Ontario St	1920	0	Yes	B
837 E Ontario St	—	2	Yes	B
838 E Ontario St	1925	0	Yes	B
839-41 E Ontario St	1920	0	Yes	B
840 E Ontario St	1925	0	Yes	A
842 E Ontario St	1925	0	Yes	A
843 E Ontario St	1920	0	Yes	A
844 E Ontario St	1925	0	Yes	A
845 E Ontario St	1920	0	Yes	A
846 E Ontario St	1925	0	Yes	A
847 E Ontario St	—	0	Yes	B
848 E Ontario St	1925	0	Yes	A
849 E Ontario St	—	0	Yes	B
850 E Ontario St	1925	0	Yes	B
851 E Ontario St	1920	0	Yes	B
852 E Ontario St	1925	0	Yes	A
853 E Ontario St	1920	0	Yes	B
854 E Ontario St	1925	1	Yes	B
855 E Ontario St	1920	0	Yes	A
856 E Ontario St	1925	0	Yes	A
857 E Ontario St	1929	0	Yes	A
858 E Ontario St	1925	1	Yes	A
860 E Ontario St	1925	5	Yes	F
862 E Ontario St	1920	0	Yes	A
864 E Ontario St	1925	0	Yes	A
866 E Ontario St	1920	3	Yes	C

Recent block activity

2026-06-21Tax delinquency recorded · 860 E Ontario St
2026-06-21Tax delinquency recorded · 851 E Ontario St
2026-06-21Tax delinquency recorded · 803 E Ontario St
2026-05-14Inspection · 809 E Ontario St
2026-05-14Inspection · 800 E Ontario St
2026-05-07Inspection · 835 E Ontario St
2026-04-04Inspection · 860 E Ontario St
2026-03-01Tax delinquency recorded · 803 E Ontario St
2026-03-01Tax delinquency recorded · 825 E Ontario St
2026-03-01Tax delinquency recorded · 830 E Ontario St
2026-03-01Tax delinquency recorded · 854 E Ontario St
2026-03-01Tax delinquency recorded · 850 E Ontario St

Block health comparison

Scope	Avg grade	Open viol/property
Block	B	0.38
Street	A	0.19
ZIP 19134	A	0.22
Citywide	—	—