Block Report

300 Block of Diamond St

11 properties on this block in Philadelphia.

View property grades, violation history, tax delinquencies, ownership transfers, title risk scores, and safety data for all 11 properties on the 300 Block of Diamond St.

About this block

The 300 block of Diamond St contains 13 properties tracked on KnowMyBlock, with an average grade of B. Construction dates range from 1920 to 2020. There are 2 open code violations across the block. The block has seen 22 ownership transfers in the last five years. 2 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 69% of its parcels.

All properties on this block (13)

AddressYearOpen violOwner-occGrade
300 Diamond St20200YesA
301 Diamond St0YesB
302 Diamond St20110YesA
303 Diamond St20110YesA
304 Diamond St20110YesA
310 Diamond St0YesB
311 Diamond St0YesB
312-18 Diamond St20040YesA
313 Diamond St0YesB
315-25 Diamond St20030YesA
320 Diamond St19200YesB
322 Diamond St2YesC
324 Diamond St19200YesA

Recent block activity

  1. 2026-08-30License expired · 312-18 Diamond St
  2. 2026-08-30License expired · 312-18 Diamond St
  3. 2026-08-25License expired · 315-25 Diamond St
  4. 2026-08-25License expired · 315-25 Diamond St
  5. 2026-08-25License expired · 315-25 Diamond St
  6. 2026-07-26License expired · 315-25 Diamond St
  7. 2026-06-21Tax delinquency recorded · 320 Diamond St
  8. 2026-04-23Inspection · 300 Diamond St
  9. 2026-03-01Tax delinquency recorded · 320 Diamond St
  10. 2026-02-11Violation resolved · 302 Diamond St — F-903.5
  11. 2026-02-11Complaint closed · 304 Diamond St
  12. 2026-02-11Complaint closed · 302 Diamond St

Block health comparison

ScopeAvg gradeOpen viol/property
BlockB0.18
StreetB0.33
ZIP 19122B0.12
Citywide