Block Report

400 Block of Collom St

8 properties on this block in Philadelphia.

View property grades, violation history, tax delinquencies, ownership transfers, title risk scores, and safety data for all 8 properties on the 400 Block of Collom St.

About this block

The 400 block of Collom St contains 11 properties tracked on KnowMyBlock, with an average grade of B. Construction dates range from 1900 to 1900. There are currently no open code violations on the block. The block has seen 3 ownership transfers in the last five years. 6 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 45% of its parcels.

All properties on this block (11)

AddressYearOpen violOwner-occGrade
423-31 Collom St0YesD
437-49 Collom St0YesB
450 Collom St19000YesA
452 Collom St19000YesA
454 Collom St19000YesA
456 Collom St19000YesA
458 Collom St19000YesA
460 Collom St0YesC
462-66 Collom St0YesB
468 Collom St0YesB
470 Collom St19000YesA

Recent block activity

  1. 2026-06-21Tax delinquency recorded · 460 Collom St
  2. 2026-06-21Tax delinquency recorded · 452 Collom St
  3. 2026-06-21Tax delinquency recorded · 454 Collom St
  4. 2026-06-21Tax delinquency recorded · 423-31 Collom St
  5. 2026-06-21Tax delinquency recorded · 456 Collom St
  6. 2026-03-01Tax delinquency recorded · 423-31 Collom St
  7. 2026-03-01Tax delinquency recorded · 460 Collom St
  8. 2025-03-05Transferred · 450 Collom St
  9. 2024-12-01License expired · 452 Collom St
  10. 2024-12-01License expired · 454 Collom St
  11. 2024-12-01License expired · 456 Collom St

Block health comparison

ScopeAvg gradeOpen viol/property
BlockA0.00
StreetB0.30
ZIP 19144A0.28
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