Check a Building

Midtown South-Flatiron-Union Square, Manhattan — buildings, landlords and records

Midtown South-Flatiron-Union Square, Manhattan has 502 residential buildings on the city's tax roll, holding 21,029 homes; the 40 largest are listed below with what is open against them.

Across the 40 biggest buildings here, 444 violations are open with the Department of Buildings, Housing Preservation and Development, or the Environmental Control Board.

What the city records say

BoroughManhattan
Residential buildings502
Homes21,029
Census tracts8
Open violations, listed buildings444

Look up any address in Midtown South-Flatiron-Union Square →

Every violation in full, permits and job filings, elevator and boiler records, facade deadlines, recorded sales and deeds — read live from the city's data.

The biggest residential buildings here

  1. 50 West 34th Street690 homes · built 1912 · 60 open
  2. 371 7 Avenue529 homes · built 1929 · 16 open
  3. 7 East 14 Street495 homes · built 1965 · 11 open
  4. 6 West 16 Street481 homes · built 1964 · 8 open
  5. 241 West 28 Street480 homes · built 2021 · 1 open
  6. 132 West 32 Street458 homes · built 2005 · 3 open
  7. 56 West 23 Street431 homes · built 2000 · 1 open
  8. 7 West 14 Street430 homes · built 1964 · 18 open
  9. 5 East 22 Street423 homes · built 1985 · 7 open
  10. 10 East 28 Street416 homes · built 1912 · 160 open
  11. 55 West 25 Street407 homes · built 2005 · 2 open
  12. 7 East 28 Street404 homes · built 1998 · nothing open
  13. 776 Avenue Of The Amer387 homes · built 2000 · 1 open
  14. 855 Avenue Of The Amer382 homes · built 2014 · nothing open
  15. 66 East 34 Street364 homes · built 1913 · 11 open
  16. 402 Park Avenue South350 homes · built 2013 · 2 open
  17. 109 West 31 Street337 homes · built 2008 · nothing open
  18. 160 Madison Avenue318 homes · built 2013 · 5 open
  19. 835 Avenue Of The Amer302 homes · built 2010 · 5 open
  20. 736 Avenue Of The Amer301 homes · built 1999 · 1 open
  21. 777 Avenue Of The Amer294 homes · built 2000 · 15 open
  22. 7 West 21 Street289 homes · built 2014 · 1 open
  23. 9 West 31 Street283 homes · built 2004 · 1 open
  24. 10 Park Avenue268 homes · built 1932 · 20 open
  25. 796 Avenue Of The Amer266 homes · built 2003 · 3 open
  26. 278 Park Avenue South258 homes · built 1986 · 40 open
  27. 321 5 Avenue250 homes · built 2005 · nothing open
  28. 53 West 14 Street239 homes · built 1965 · nothing open
  29. 96 5 Avenue223 homes · built 1962 · 11 open
  30. 42 West 33 Street223 homes · built 2016 · 4 open
  31. 15 East 30th Street199 homes · built 2017 · 1 open
  32. 225 5 Avenue187 homes · built 1907 · 3 open
  33. 35 West 33 Street170 homes · built 2002 · 3 open
  34. 309 5 Avenue165 homes · built 2008 · 1 open
  35. 20 East 35 Street164 homes · built 1938 · 6 open
  36. 69 5 Avenue153 homes · built 1961 · 9 open
  37. 39 East 29 Street141 homes · built 2008 · nothing open
  38. 11 East 29 Street138 homes · built 2005 · 8 open
  39. 34 East 35th Street137 homes · built 2025 · 1 open
  40. 21 East 22 Street134 homes · built 1911 · 5 open

Ranked by how many homes the tax roll records, not by anything this site has judged.

Owners of record with the most homes here

Owners are matched by the name on the tax roll. A company recorded under more than one spelling appears more than once, and one holding company can stand behind several names.

Questions people ask

How many buildings are there in Midtown South-Flatiron-Union Square, Manhattan?

The Department of Finance's tax roll records 502 residential buildings in Midtown South-Flatiron-Union Square, Manhattan, holding 21,029 homes between them. That counts lots with at least one residential unit; garages, lots and purely commercial buildings are not in it.

How many violations are open in Midtown South-Flatiron-Union Square?

This page does not carry a neighborhood total, and deliberately: the city publishes violations against buildings and none of the three feeds carries a census tract, so a true total would mean one query per building. What it does show is 444 open violations across the 40 largest buildings listed here. Each building's own page carries its full count.

Who owns the most buildings in Midtown South-Flatiron-Union Square?

By homes on the tax roll, Herald Towers is the largest owner of record in Midtown South-Flatiron-Union Square, with 690 homes across 1 lot. Being the largest owner is a statement about size and nothing else.

What counts as Midtown South-Flatiron-Union Square?

The boundary is the City Planning Department's Neighborhood Tabulation Area of that name — 8 census tracts in Manhattan. NTAs are the city's own named geography, so this page draws Midtown South-Flatiron-Union Square where the city draws it, which will not always match where a listing agent or a lifelong resident draws it.

How this page is put together

Midtown South-Flatiron-Union Square is the City Planning Department's Neighborhood Tabulation Area of that name. Buildings are matched to it through the 2020 census tract the Department of Finance records for each lot, and DCP's own tract-to-NTA equivalency table — no estimate and no map-drawing. Checked against the neighborhood the Department of Buildings prints on its own permits: 295 lots sampled, 295 agreements, no disagreements.

Counts come from the tax roll on the day this page was built. Violation counts are for the buildings listed above only, because the city publishes violations against buildings and not against neighborhoods.

Please read

Check a Building reports facts about buildings and the entities that own them. It is not a consumer reporting agency, and this is not a tenant-screening service. Nothing here may be used to decide whether to rent to, hire, insure, lend to, or otherwise evaluate an individual person. It is not assembled or maintained for those purposes, it has not been prepared to the standards those decisions require, and it must not be used for them.

Every figure on this page is drawn from New York City's own published records and is reproduced without warranty that it is complete, current or accurate. Records are matched to an owner by name; a company can be recorded under more than one spelling, and two companies can share one. Verify anything you intend to rely on against the agency's own record. If something here is wrong, tell us — there is a correction link on every record in the app.