Milton Coste

69 Flatiron Penthouse Apartments

Top-floor luxury with panoramic city views in Flatiron, Manhattan

All NYC Flatiron
69 results
45 E 22ND Street #28A For Sale
Richard E Hottinger at Corcoran Group
$5,645,000

2 bd · 2 ba · 1,955 sqft · Condo

45 E 22ND Street #28A, New York City

MLS: RLS20073935 RLS at REBNY
222 PARK Avenue #7B For Sale
Richard A Balzano at Douglas Elliman Real Estate
$2,695,000

3 bd · 2 ba · Co-op

222 PARK Avenue #7B, New York City

MLS: RLS20089384 RLS at REBNY
35 E 20th Street #6B For Sale
Rachel Skumanich at Compass
$2,195,000

3 bd · 3 ba · 1,740 sqft · Co-op

35 E 20th Street #6B, New York City

MLS: RLS20077188 RLS at REBNY
20 E 17TH Street #7 For Sale
Juliana Frei at Brown Harris Stevens Residential Sales LLC
$3,800,000

3 bd · 2 ba · 2,125 sqft · Condo

20 E 17TH Street #7, New York City

MLS: RLS20076214 RLS at REBNY
27 W 19th Street #12th-Floor For Sale
Alix E Shulman at Keller Williams NYC
$2,650,000

2 bd · 2 ba · 1,379 sqft · Condo

27 W 19th Street #12th-Floor, New York City

MLS: RLS20087952 RLS at REBNY
32 W 18TH Street #4A For Sale
Jennifer L Ireland Kubis at Corcoran Group
$4,250,000

3 bd · 3 ba · 3,007 sqft · Condo

32 W 18TH Street #4A, New York City

MLS: RLS20078695 RLS at REBNY
17 W 17TH Street #6 For Sale
Joshua B Rubin at Douglas Elliman Real Estate
$5,995,000

4 bd · 5 ba · 4,700 sqft · Co-op

17 W 17TH Street #6, New York City

MLS: RLS20088979 RLS at REBNY
10 E 18th Street #7N For Sale
Austin B Schuster at Compass
$2,695,000

2 bd · 2 ba · 2,043 sqft · Condo

10 E 18th Street #7N, New York City

MLS: RLS20077218 RLS at REBNY
5 E 22ND Street #23C For Sale
Christopher E Kromer at Brown Harris Stevens Residential Sales LLC
$2,550,000

2 bd · 2 ba · 1,100 sqft · Condo

5 E 22ND Street #23C, New York City

MLS: RLS20089163 RLS at REBNY
21 W 17th Street #8 For Sale
Michael Bethoney at Nest Seekers LLC
$2,995,000

3 bd · 2 ba · 1,417 sqft · Condo

21 W 17th Street #8, New York City

MLS: RLS20073651 RLS at REBNY
16 W 18th Street #8 For Sale
Michael Bethoney at Nest Seekers LLC
$2,900,000

3 bd · 2 ba · 1,416 sqft · Condo

16 W 18th Street #8, New York City

MLS: RLS20081276 RLS at REBNY
15 Union Square #3-D For Sale
Asher Alcobi at Peter Ashe
$4,750,000

2 bd · 3 ba · 2,282 sqft · Condo

15 Union Square #3-D, New York City

MLS: RLS20089076 RLS at REBNY

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This 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.

Listings are updated approximately every 15 minutes. Data displayed by Keller Williams NYC.

RLS at REBNY

Penthouse Apartments for Sale in NYC

Any top-floor apartment in NYC can be marketed as a penthouse, from a 650-square-foot studio on the 6th floor to a 5,000-square-foot full-floor residence in a 60-story tower. After 25+ years representing buyers in Central Park South, Tribeca, and across the outer boroughs, I advise every penthouse buyer to evaluate four factors: private outdoor space quality, mechanical equipment on the roof above, roof membrane condition, and the thermal exposure that comes with a top-floor position.

FAQ: Are there unique maintenance costs for a NYC penthouse?

Yes. Top-floor units have higher heating and cooling costs due to roof exposure. If the penthouse includes a private roof terrace, waterproofing membrane maintenance is often the owner's responsibility, and resurfacing can cost $30,000-$80,000+.

FAQ: What is the price premium for a penthouse?

The premium ranges from 15% to over 100% above comparable lower-floor units, depending on views, outdoor space, ceiling heights, and building tier. In luxury Midtown East condos, full-floor penthouses can price at a multiple of lower floors. View current listings on our NYC apartment search.

FAQ: Can neighboring buildings obstruct a penthouse's views?

Yes. There are no legal protections for air rights or views in NYC unless adjacent air rights have been purchased. Research the zoning envelope of adjacent parcels. See our NYC buyer guide for view risk guidance.

Buying Tip from Milton Coste

Visit the unit at night as well as during the day. City views after dark are a major part of the value, and you want to verify there is no mechanical equipment noise from rooftop HVAC units that only becomes audible when ambient street noise drops. Ask the managing agent about recent rooftop equipment upgrades.

Browse More Amenities

Doorman

Full-service living with 24-hour doorman and concierge
In-Unit Laundry

Skip the laundromat with in-unit washer and dryer
Pet-Friendly

NYC apartments that welcome your furry family members
Gym

Work out steps from your front door
Outdoor Space

Private terraces, balconies, and rooftop access
Parking

Dedicated parking in the city that never sleeps
Elevator

Easy access on every floor
Fireplace

historic pre-war and luxury apartments with fireplaces
Pool

Luxury living with swimming pool access
Concierge

White-glove service with dedicated concierge staff
HDFC

Income-restricted co-ops at below-market prices
Sponsor Unit

Buy direct from the sponsor, no board approval needed
Fixer-Upper

Renovation-ready properties with upside potential
Townhouse

Brownstones, rowhouses, and townhomes across NYC
New Construction

Brand-new apartments with modern finishes and tax abatements
Luxury

Premium residences starting at $2 million
Under $500K

Affordable apartments for first-time buyers
Pre-War

Classic NYC charm with high ceilings and original details
Loft

Open-plan living with soaring ceilings and exposed brick
Duplex

Two-level apartments with extra space and privacy
Investment

Multi-family buildings for owner-occupants and investors
Waterfront

River views and waterfront living across NYC
Short Sale

Below-market deals from motivated sellers

Penthouse Apartments in Other Manhattan Neighborhoods

Washington HeightsInwoodHamilton HeightsCentral HarlemEast HarlemWest HarlemMorningside HeightsUpper West SideUpper East SideMidtownMidtown EastMidtown WestMidtown SouthChelseaWest VillageEast VillageGreenwich VillageGramercy ParkSohoTribeca

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Milton Coste, Licensed Real Estate Associate Broker, KWNYC