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Neighborhood · Manhattan

Midtown South, Flatiron and Union Square

This area runs from 14th Street north to the high 30s, between roughly Sixth Avenue and Park Avenue, widening west to Seventh and Eighth Avenues near Penn Station. It takes in Union Square, the Flatiron District, Madison Square and the blocks around Herald Square. Much of the building stock is commercial loft and office buildings, with a smaller number of apartment buildings mixed in. Transit is dense. The 14th Street–Union Square station serves the 4, 5, 6, L, N, Q, R and W, and 34th Street–Herald Square serves the B, D, F, M, N, Q, R and W. The 1, 2 and 3 stop at 34th Street–Penn Station on the western edge. Union Square Park (6.5 acres) and Madison Square Park (6.2 acres) are the main green spaces.

Midtown South, Flatiron and Union Square has 3,581 open HPD housing violations, 870 of them Class C (immediately hazardous). Inspectors issued 928 new violations here in the last 12 months. That's the 29th most open violations of 33 neighborhoods in Manhattan.

Check a building in Manhattan

Open HPD violations
3,581
870 Class C
New violations, last 12 months
928
316 Class C · 24th in Manhattan
How serious are the open violations?
Open HPD violations by class
Class C870 · 24%Class B1,571 · 44%Class A1,140 · 32%Class A here includes a small number of Class I orders.

Source: NYC HPD Housing Maintenance Code Violations · data as of Oct 16, 2026

New violations in the last 12 months
By class
  • Class C · immediately hazardous316
  • Class B · hazardous283
  • Class A · non-hazardous242

Source: NYC HPD Housing Maintenance Code Violations · data as of Oct 16, 2026

Good to know

  • Union Square Park opened in 1839 and became a National Historic Landmark in 1997
  • Union Square Greenmarket runs Mondays, Wednesdays, Fridays and Saturdays
  • Madison Square Park sits between 23rd and 26th Streets, from Broadway to Madison Avenue
  • The Flatiron Building gives the Flatiron District its name
  • 23rd Street stops on the 6, R/W and F/M; 28th Street stops on the 6, R/W and 1

Before you rent or buy here

Check the buildingLook up any address for violations, complaints and owner.Read the violation classesWhat A, B and C mean and how fast owners must fix them.Work out your budgetThe 40× income rule most NYC landlords use.

More neighborhoods in Manhattan

Chelsea & Hudson YardsChinatown & Two BridgesEast Harlem (North)East Harlem (South)East Midtown & Turtle BayEast VillageFinancial District & Battery Park CityGramercyGreenwich VillageHamilton Heights & Sugar HillHarlem (North)Harlem (South)Hell's KitchenInwoodLenox Hill and Roosevelt IslandLincoln SquareLower East SideManhattan ValleyManhattanville & West HarlemMidtown and Times SquareMorningside HeightsMurray Hill and Kips BayRandall's IslandSoHo, Little Italy and Hudson SquareStuyvesant Town and Peter Cooper VillageTribeca and Civic CenterUpper East Side and Carnegie HillUpper West Side (Central)Washington Heights (North)Washington Heights (South)West VillageYorkville
Fact-checked October 12, 2026

Boundaries checked by testing MTA station coordinates and landmark points against the 2020 NTA polygon (NYC Open Data 9nt8-h7nd). West edge corrected: the NTA follows about Sixth Avenue in the south and reaches Seventh/Eighth Avenue only near Penn Station; 23rd St on the 1 is outside the NTA, so the station highlight was rewritten (23rd St F/M and 28th St 1 are inside). Union Square opening (July 19, 1839) and 1997 NHL designation from NYC Parks history page; Greenmarket days from Wikipedia; park acreage (6.51 and 6.234 acres) and Madison Square Park streets from the NYC Parks Properties dataset. Unsourced loft-height detail removed.

Sources

  1. Union Square Park history (NYC Parks) · NYC Parks (accessed October 12, 2026)
  2. Union Square, Manhattan (Wikipedia) · Wikipedia (accessed October 12, 2026)
  3. Flatiron District (Wikipedia) · Wikipedia (accessed October 12, 2026)
  4. MTA Subway Stations (dataset) · Metropolitan Transportation Authority via data.ny.gov (accessed October 12, 2026)
  5. Parks Properties (dataset) · NYC Department of Parks and Recreation via NYC Open Data (accessed October 12, 2026)

General information, not legal, tax or financial advice. Rules change; confirm with the agency or a professional before you act.

“Open” counts every HPD violation not yet recorded as corrected, including old ones owners never certified, so totals can exceed the number of apartments. Statistics: NYC Open Data (HPD violations, 311 service requests, DCP PLUTO) and rent-stabilized counts from DOF tax bills (via JustFix), updated Oct 16, 2026. Heat season runs October 1 to May 31; season-to-date counts compare the same dates.