Block Report

400 Block of N 51st St

14 properties on this block in Philadelphia.

View property grades, violation history, tax delinquencies, ownership transfers, title risk scores, and safety data for all 14 properties on the 400 Block of N 51st St.

About this block

The 400 block of N 51St St contains 14 properties tracked on KnowMyBlock, with an average grade of A. Construction dates range from 1925 to 1925. There are currently no open code violations on the block. The block has seen 19 ownership transfers in the last five years. 14 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 29% of its parcels.

All properties on this block (14)

AddressYearOpen violOwner-occGrade
439 N 51st St19250YesA
441 N 51st St19250YesB
443 N 51st St19250YesA
445 N 51st St19250YesA
447 N 51st St19250YesB
449 N 51st St19250YesA
451 N 51st St19250YesB
453 N 51st St19250YesA
455 N 51st St19250YesA
457 N 51st St19250YesA
459 N 51st St19250YesB
461 N 51st St19250YesA
463 N 51st St19250YesA
465 N 51st St19250YesA

Recent block activity

  1. 2027-02-28License expired · 449 N 51st St
  2. 2026-09-15License expired · 447 N 51st St
  3. 2026-07-12License expired · 445 N 51st St
  4. 2026-06-21Tax delinquency recorded · 441 N 51st St
  5. 2026-06-21Tax delinquency recorded · 451 N 51st St
  6. 2026-03-01Tax delinquency recorded · 441 N 51st St
  7. 2026-03-01Tax delinquency recorded · 451 N 51st St
  8. 2026-02-26License issued · 449 N 51st St
  9. 2025-08-18Complaint closed · 439 N 51st St
  10. 2025-08-15Complaint filed · 439 N 51st St — Work Underway Without Permits
  11. 2025-08-13License issued · 447 N 51st St
  12. 2025-07-01License issued · 445 N 51st St

Block health comparison

ScopeAvg gradeOpen viol/property
BlockA0.00
StreetA0.24
ZIP 19139A0.24
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