For Sale · Listing by Douglas Elliman Real Estate
323 PARK Avenue S #PENTHOUSE
Flatiron, Manhattan
$8,995,000
323 PARK Avenue S #PENTHOUSE
MLS® #RLS20120659
Listing by Douglas Elliman Real Estate
Open Houses Scheduled
Thursday, October 15 • 4:00 PM – 6:00 PM
Saturday, October 17 • 10:00 AM – 11:30 AM
REBNY 2025: signed Buyer Representation Agreement required before any showing.
- 3
- Bedrooms
- 3.5
- Baths
- 3,101
- Sq. Ft.
- 2013
- Year Built
Quick Summary
Property Highlights
- Views: City
- Exposure: South,West facing
- Outdoor Space: None, Rooftop
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | Oct 13, 2026 | $8,995,000 | - |
| Currently | Oct 14, 2026 | $8,995,000 | - |
Description
The Penthouse at 323 Park Avenue South is a singular opportunity to own a full-floor condo with an exceptional private rooftop terrace. This floor offers approximately 3,101 sq ft of interior living space with an additional 747 sq ft of furnished, corner outdoor space including a hot tub and gas grill. From a doorman lobby, a secure coded elevator takes one up to their private landing. A gracious gallery leads to an open concept, corner living and dining room with South and West exposures. A gas fireplace, wet bar, and powder room enhance this entertaining space. Hardwood floors and power operated shades are featured throughout the apartment. The kitchen includes a Sub-Zero fridge and wine cooler, a Wolf oven, a Viking stove with pot-filler, integrated microwave, a Bosch dishwasher, and a Miele espresso machine. The kitchen has an adjacent combination pantry and laundry room, with washer/dryer and extensive storage. All 3 bedrooms have en-suite bathrooms impeccably designed with heated floors, marble walls, and stainless-steel cabinetry. The primary bathroom has a large, jetted tub and steam shower . The primary bedroom includes a dressing area and walk-in-closet. Designed by Gwathmey and Siegel architects, 323 Park Avenue South is located a block away from beautifully landscaped Madison Square Park and a few minutes from Gramercy Park. Some images have been virtually staged.
Features & Amenities
Interior Features
Exterior Features
Building Amenities
Appliances
Building Information
Financial Details
About Flatiron
View All Flatiron ListingsThe Flatiron District is a busy intersection of history, technology, and luxury living. Named after the iconic Flatiron Building, the neighborhood is centered around Madison Square Park and is a hub for the city's 'Silicon Alley.' The real estate market is famous for its grand cast-iron loft buildings with high ceilings and expansive floor plans, alongside ultra-luxury glass towers that offer modern amenities and central Manhattan convenience.
Flatiron Live Market Data
View NeighborhoodActive Listings
118
Median Asking Price
$2.84M
Median $/Sqft
$1,940
Avg Days on Market
N/A
New This Week
4
Price Reduced
21%
Sold (30 Days)
15
Median Sale Price
$1.95M
Live data from RLS at REBNY • Updated 10/13/26, 11:44 PM EST
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Location
323 PARK Avenue S #PENTHOUSE, Flatiron, New York County
Floor Plans
Building Information
Official NYC property records for this building
Tax & Assessment
Note: Individual unit taxes may differ. Verify current tax bills with NYC DOF.
Source: NYC PLUTO (Primary Land Use Tax Lot Output), NYC Department of City Planning (data.cityofnewyork.us)
Want help estimating ownership costs or understanding building compliance? Let's discuss
Listing Data
RLS® at REBNY (Real Estate Board of New York) via Trestle API. Updated in real-time.
Building Data
NYC PLUTO (Primary Land Use Tax Lot Output), NYC Department of City Planning. Updated quarterly.
Market Data
RLS® at REBNY (Real Estate Board of New York). Live data updated in real-time.
Map & Location
OpenStreetMap contributors via Leaflet. Geocoding via Nominatim.
All data is provided for informational purposes only and should be independently verified. See our Data Sources Policy for more information.
Frequently Asked Questions
Common questions about this property
The current listed common charges are $7,493 per month. Confirm the exact amount with Milton Coste before making an offer.
This property has 3 bedrooms and 3 full bathrooms and 1 half bathroom.
The listed interior living area is 3,101 square feet. Verify dimensions independently during due diligence.
According to MLS records, the building was constructed in 2013, making it approximately 13 years old.
This listing is a condominium. Buyers receive a deed to their individual unit and own their space outright, subject to condo association rules.
Pet policy requires confirmation with Milton Coste.
At the current list price of $8,995,000 for 3,101 sq ft, the asking price per square foot is approximately $2,901. This figure is for reference only and may differ from appraised or assessed values.
To schedule a private showing, contact Milton Coste at (917) 416-7433 or milton@miltoncoste.com. Per REBNY guidelines effective 2025, a Buyer Representation Agreement is required before a buyer's broker can show you properties. You may attend open houses independently without one.
Have a question not answered here?
(917) 416-7433Listing Courtesy of Douglas Elliman Real Estate - Joan S Swift
Listing Contact: (917) 991-1590
Listing information for certain New York City properties provided courtesy of the Real Estate Board of New York's Residential Listing Service (the "RLS"). The information contained in this listing has not been verified by the RLS and should be verified by the consumer. The listing information provided here is for the consumer's personal, non-commercial use. Retransmission, redistribution or copying of this listing information is strictly prohibited except in connection with a consumer's consideration of the purchase and/or sale of an individual property. This listing information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity in the market. ©2026 The Real Estate Board of New York, Inc., all rights reserved. This advertisement does not suggest that the broker has a listing in this property or properties or that any property is currently available.
Broker Commission Disclosure: Broker commissions are not set by law and are fully negotiable.
How working with a buyer's agent works: I work for you, not the seller. Before I show you anything, New York brokerage rules ask us to put that in writing: an agreement and a disclosure that say I work for you and negotiate on your behalf. The agreement is non-exclusive: you can work with other agents, it runs for a short fixed term we agree on, and you can end it with a note. You may attend open houses independently without an agreement. Read how it works
RLS Data display by Keller Williams NYC. Data last updated on 10/14/2026 at 3:44 AM UTC
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Sale history, taxes, violations and comps for this unit
Before you bid
Pre-Offer Report: 323 PARK Avenue S #PENTHOUSE
At $8,995,000, the listing leaves out what decides the offer: the recorded sale history, the tax and abatement picture, open building violations and permits, and the closed sales that set the price. Milton prepares the report from public records. No obligation.
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What happens next
- 1Milton emails you today.
- 2A short call about what you want and when.
- 3The agreement arrives electronically after the call. Then showings.
Your info is secure and never shared.
You're contacting Milton Coste, a buyer's agent. Before any private showing, New York brokerage rules require a short non-exclusive agreement. Milton walks you through it before you sign anything. Broker commissions are not set by law and are fully negotiable. How working together works.
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Quick Facts
Monthly Costs Estimate
$1,799,000
Source: Freddie Mac PMMS
Est. Monthly Payment
$0
Estimates only. Consult a lender for exact figures.
Mansion tax applies at this price point
New York State charges the buyer a mansion tax on residential purchases at $1,000,000 or more. At this asking price the tier is $5M to $9,999,999 at 2.25%, applied to the whole purchase price. It is due in cash at closing and cannot be financed.
Estimated mansion tax at asking
$202,388
Estimate based on the asking price. Confirm your own obligation with your real estate attorney.
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