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4-bedroom apartment for sale in Midtown South-Flatiron-Union Square

131 5th Ave Apt 801, Midtown South-Flatiron-Union Square, Manhattan, New York, NY, 10003

$4,500,000
Asking price · in USD · Price history
Size
3,500 ft² (325 m²)
Available
Now

About this home

Apartment for sale in Midtown South-Flatiron-Union Square, Manhattan: 4 bedrooms, 3 bathrooms, 3,500 ft². Asking price $4,500,000. Built in 1905.

From the original listing · Realtor.comShow

Triple penthouse with private outdoor space! This unique four bedroom, three bathroom coop loft is available on the private market and ready for a lucky new owner. A keyed elevator leads you to your semi-private landing, and onto the ground level of the apartment. On this floor are 11-foot ceilings, an enormous open loft space with powder room, southern-facing windows, an open, SieMatic vented chef's kitchen, an office, a den, and a separate dining area flanked in gorgeous built-ins. It truly screams Flatiron loft! The second floor has two bedrooms and a full bathroom, as well as a full-sized laundry room and dog washing station. The top level of this triplex is the primary suite, as well as private terrace. The bedroom is large, with en-suite bathroom inclusive of a double vanity, soaking tub, and stall shower. There is a large, built-out customized closet and access to an approximately 300 square foot irrigated private terrace. There are three zones of air conditioning, two separate entrances, and a security system. The cooperative comprises 21 residences over 8 stories and lies on the corner of 20th and Fifth. It has a full-time super, video intercom, keyed elevator, and separate laundry and bike storage. The building enjoys free and clear ownership (no mortgage) and a retail cooperative covers about 1/3 of the building's expenses. *Some photos are virtually staged*

Description from Realtor.com, shown as published there. See the original listing

Roofy listing score

Grade B, 71/100 · Complete

How complete and honest this listing is, from what the source sites show and Roofy’s own checks. It isn’t a rating of the home or the agent. How the score works

  • Photos25/25
    • Full points: 19 photos15/15
    • Full points: Large, clear photos (about 1,000 px)10/10
  • Details17/20
    • Full points: Price stated3/3
    • Full points: Bedrooms stated2/2
    • Full points: Bathrooms stated2/2
    • Full points: Size stated2/2
    • Does not apply: Move-in date: does not apply2/2
    • Does not apply: Lease length: does not apply1/1
    • Full points: Pet policy stated1/1
    • Full points: Laundry mentioned1/1
    • No points: Heat and utilities not mentioned0/1
    • No points: No amenities listed0/2
    • Full points: Description of 237 words3/3
  • True cost7/15
    • No points: No running costs stated (HOA, service charge or taxes)0/8
    • Full points: Price in line with similar homes in its neighborhood7/7
  • Accuracy12/15
    • Nothing to compare: Listed on one site, nothing to compare3/6
    • Full points: Agrees with city records (built 1905, 37 homes)5/5
    • Full points: Confirmed on its source site 3 days ago4/4
  • Legal10/10
    • Full points: No fair-housing problems found in the wording6/6
    • Full points: The agent’s license is active4/4
  • Trust0/15
    • No points: Not claimed on Roofy by the agent or owner0/10
    • No points: The agent is not verified on Roofy0/5

Listed this home? Claim your agent page to add the trust points.

Scored Nov 2, 2026 · Score version 1. No one can pay to change a score.

Buying costs

What this price means for you: the monthly payment, and New York’s mansion tax, which the buyer pays on a home of $1 million or more.

Price history

High $4,500,000Asking price, as listed
Oct 2026Nov 2026
DatePrice
Oct 29, 2026First seen on Roofy (via Realtor.com)$4,500,000
Oct 22, 2026Price changed · Realtor.com$4,500,000

From the listing sites’ own records and what Roofy has seen since. Newest first.

Compared with the area

Asks $4,500,000, 25% below the median asking price for homes for sale with 4+ bedrooms in Midtown South-Flatiron-Union Square.

Median here
$6,000,000
13 listings, last 90 days
Per ft²
$1,285.71 vs $1,657.40
This home vs the median, 22% lower

Asking prices of listings on Roofy and listing sites in the last 90 days, not signed leases or sale prices. One currency, never converted.

More about Midtown South-Flatiron-Union Square

Location

Location as the listing shows it.Open in Google Maps

Nearby transit

  • 23 StN R W4 min walk
  • 23 St-Baruch College66 min walk
  • 23 StF M6 min walk

Nearby public schools · District 2

Distance only, not school zones. Check the zoned school with NYC Public Schools.

The building

37 units · 8 floors · built 1905

Building record for 129 5 Avenue

NYC records as of Nov 1 (weekly)

129 5 Avenue · BBL 1-00848-0074 · built 1905 · 37 units

Roofy building score 99/100 · Well keptAbout the building, from HPD violations. Not an inspection.
Building type
Elevator apartment building
Open HPD violations
None
Heat complaints
0 this season
Complaints, last 12 months
2
Rent stabilization
May have stabilized units
Last sale (12-month file)
$3,350,000 on Jun 22, 2026

The city’s records match this listing to the tax lot at 129 5 Avenue. Corner and multi-address buildings often have one main address.

No open immediately hazardous (Class C) violations.

See the full building record

Public NYC records about the building, not about the person listing it. Buyers and renters can see them on city websites too. Source: NYC Open Data (DCP PLUTO, HPD, DOF).

Added to Roofy Oct 29, 2026Last checked on Realtor.com Oct 29, 2026Roofy doesn’t verify listings. Never send money before seeing a home.