Block Report

1800 Block of S Allison St

42 properties on this block in Philadelphia.

View property grades, violation history, tax delinquencies, ownership transfers, title risk scores, and safety data for all 42 properties on the 1800 Block of S Allison St.

About this block

The 1800 block of S Allison St contains 42 properties tracked on KnowMyBlock, with an average grade of C. Construction dates range from 1920 to 1920. There are 2 open code violations across the block. The block has seen 53 ownership transfers in the last five years. 9 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 36% of its parcels.

All properties on this block (42)

AddressYearOpen violOwner-occGrade
1807 S Allison St0YesD
1809 S Allison St0YesC
1810 S Allison St0YesD
1811 S Allison St0YesC
1812 S Allison St19200YesA
1813 S Allison St0YesB
1814 S Allison St19200YesA
1815 S Allison St0YesC
1816 S Allison St0YesB
1817 S Allison St0YesC
Show all 42 properties

Recent block activity

  1. 2026-06-21Tax delinquency recorded · 1807 S Allison St
  2. 2026-06-21Tax delinquency recorded · 1837 S Allison St
  3. 2026-06-21Tax delinquency recorded · 1834 S Allison St
  4. 2026-06-21Tax delinquency recorded · 1850 S Allison St
  5. 2026-06-21Tax delinquency recorded · 1828 S Allison St
  6. 2026-06-21Tax delinquency recorded · 1815 S Allison St
  7. 2026-06-21Tax delinquency recorded · 1833 S Allison St
  8. 2026-06-21Tax delinquency recorded · 1823 S Allison St
  9. 2026-06-21Tax delinquency recorded · 1838 S Allison St
  10. 2026-06-21Tax delinquency recorded · 1848 S Allison St
  11. 2026-06-21Tax delinquency recorded · 1840 S Allison St
  12. 2026-06-21Tax delinquency recorded · 1841 S Allison St

Block health comparison

ScopeAvg gradeOpen viol/property
BlockC0.05
StreetB0.12
ZIP 19143A0.23
Citywide