The Block Report
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Blocks where one organization holds the largest share of homes on the OPA roll

Leading organization-name count divided by all qualifying homes on blocks with at least 20 homes and at least 5 homes under that name. Recorded owner-name aggregation does not establish beneficial ownership, control, affiliates, residence, or rental use. 395 eligible blocks, using the stated public-record basis. Every linked entry opens its underlying report.

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No. 1 on this board414 of 414 homes800-899 Chestnut St

414 under Benjamin Franklin House · 414 homes total · Building-dominated, largest address 100% · 2026-07-22 OPA owner roll · ZIP 19107 · open the underlying report →

Compared
395 eligible blocks
Basis
2026-07-22 OPA owner roll
Record date
2026-07-22

Which Philadelphia blocks have the highest recorded-name concentration?

2026-07-14 OPA owner roll · current Top 5 in 42 secondsTranscript and video details →

How to read this board

One metric, one stated population, one source date.

The large value is the ranking metric. Open a row for its underlying ZIP, block, or property report; use the method below before treating the comparison as a conclusion.

Complete ranking

Top 25 blocks, ranked

Leading organization-name count divided by all qualifying homes on blocks with at least 20 homes and at least 5 homes under that name. Recorded owner-name aggregation does not establish beneficial ownership, control, affiliates, residence, or rental use. Read the source and date with the value; rankings are comparisons, not appraisals or legal conclusions.

395 eligible blocks2026-07-22 OPA owner roll2026-07-22
Ranking metricBlocks where one organization holds the largest share of homes on the OPA rollSource = OPA assessments
  1. 800-899 Chestnut St414 under Benjamin Franklin House · 414 homes total · Building-dominated, largest address 100% · 2026-07-22 OPA owner roll · ZIP 19107414 of 414 homes
  2. 4600-4699 Flat Rock Rd128 under Venice Lofts Property Own · 128 homes total · Building-dominated, largest address 100% · 2026-07-22 OPA owner roll · ZIP 19127128 of 128 homes
  3. 4700-4799 Alden Walk26 under Alden Llc · 26 homes total · 2026-07-22 OPA owner roll · ZIP 1912726 of 26 homes
  4. 800-899 June St20 under Philadelphia Housing Authority · 20 homes total · 2026-07-22 OPA owner roll · ZIP 1913920 of 20 homes
  5. 1600-1699 Callowhill St105 under Ivy Logan Property Llc · 108 homes total · Building-dominated, largest address 100% · 2026-07-22 OPA owner roll · ZIP 19130105 of 108 homes
  6. 8500-8599 Alicia St35 under Mission Hill Assoc L P · 36 homes total · 2026-07-22 OPA owner roll · ZIP 1911135 of 36 homes
  7. 8500-8599 Jeanes St29 under Mission Hill Assoc L P · 30 homes total · 2026-07-22 OPA owner roll · ZIP 1911129 of 30 homes
  8. 500-599 Arnold St44 under Mission Hill Assoc L P · 46 homes total · 2026-07-22 OPA owner roll · ZIP 1911144 of 46 homes
  9. 1500-1599 Spruce St277 under F C Drake Associates L P · 290 homes total · Building-dominated, largest address 99.7% · 2026-07-22 OPA owner roll · ZIP 19102277 of 290 homes
  10. 0-99 Benezet St20 under George Woodward Inc · 22 homes total · 2026-07-22 OPA owner roll · ZIP 1911820 of 22 homes
  11. 1000-1099 S 48th St45 under New Horizon West End Llc · 51 homes total · Building-dominated, largest address 88.2% · 2026-07-22 OPA owner roll · ZIP 1914345 of 51 homes
  12. 500-599 S 54th St19 under South 54th Street Limited · 22 homes total · 2026-07-22 OPA owner roll · ZIP 1914319 of 22 homes
  13. 1500-1599 Poplar St16 under Francisville East Lp · 20 homes total · 2026-07-22 OPA owner roll · ZIP 1913016 of 20 homes
  14. 6300-6399 Carnation St33 under Carnation Street Ventures Llc · 44 homes total · 2026-07-22 OPA owner roll · ZIP 1914433 of 44 homes
  15. 3800-3899 Reno St23 under Philadelphia Housing Authority · 31 homes total · 2026-07-22 OPA owner roll · ZIP 1910423 of 31 homes
  16. 800-899 N Markoe St53 under Philadelphia Housing Authority · 74 homes total · 2026-07-22 OPA owner roll · ZIP 1913953 of 74 homes
  17. 6700-6799 N 13th St41 under 6751 N 13th Llc · 59 homes total · Building-dominated, largest address 91.5% · 2026-07-22 OPA owner roll · ZIP 1912641 of 59 homes
  18. 800-899 N 48th St85 under West Village Group Llc · 126 homes total · Building-dominated, largest address 41.3% · 2026-07-22 OPA owner roll · ZIP 1913985 of 126 homes
  19. 9200-9299 Jamison Ave58 under Jamison Road Associates L · 94 homes total · 2026-07-22 OPA owner roll · ZIP 1911558 of 94 homes
  20. 1100-1199 S Broad St186 under Marine Club Associates Lp · 304 homes total · Building-dominated, largest address 98% · 2026-07-22 OPA owner roll · ZIP 19146186 of 304 homes
  21. 2700-2799 N 11th St17 under Npch Associates · 28 homes total · 2026-07-22 OPA owner roll · ZIP 1913317 of 28 homes
  22. 100-199 N 4th St33 under 125 North Fourth Street · 55 homes total · Building-dominated, largest address 100% · 2026-07-22 OPA owner roll · ZIP 1910633 of 55 homes
  23. 4600-4699 Westminster Ave20 under Philadelphia Housing Authority · 35 homes total · 2026-07-22 OPA owner roll · ZIP 1913120 of 35 homes
  24. 200-299 S 60th St12 under 60th Street Corridor Lp · 21 homes total · 2026-07-22 OPA owner roll · ZIP 1913912 of 21 homes
  25. 2900-2999 Frankford Ave17 under Kings Highway Apts Llc · 30 homes total · 2026-07-22 OPA owner roll · ZIP 1913417 of 30 homes
Source: OPA Property Assessments · Office of Property Assessment · City of Philadelphia open data
Exact method and eligibility

Population: OPA blocks with at least 20 qualifying homes and a leading classified organization name on at least 5 homes. Exact names seen at least twice are merged only through the shared mechanical normalizer and reviewed agency aliases. Metric: leading matched home count divided by all qualifying homes; individuals are suppressed.

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