Milton Coste

23 Flatiron Outdoor Space Apartments

Private terraces, balconies, and rooftop access in Flatiron, Manhattan

All NYC Flatiron
23 results
4 W 21st Street #12C For Sale
Justin D Rubinstein at Compass
$1,175,000

1 bd · 2 ba · 1,073 sqft · Condop

4 W 21st Street #12C, New York City

MLS: RLS20070403 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
16 W 18th Street #9 For Sale
Michael Bethoney at Nest Seekers LLC
$3,195,000

3 bd · 2 ba · 1,416 sqft · Condo

16 W 18th Street #9, New York City

MLS: RLS20073309 RLS at REBNY
21 W 17th Street #11 For Sale
Michael Bethoney at Nest Seekers LLC
$3,150,000

3 bd · 2 ba · Condo

21 W 17th Street #11, New York City

MLS: RLS20077416 RLS at REBNY
21 W 17th Street #5 For Sale
Michael Bethoney at Nest Seekers LLC
$2,700,000

3 bd · 2 ba · 1,427 sqft · Condo

21 W 17th Street #5, New York City

MLS: RLS20057159 RLS at REBNY
16 W 18th Street #4 For Sale
Michael Bethoney at Nest Seekers LLC
$2,750,000

3 bd · 2 ba · 1,416 sqft · Condo

16 W 18th Street #4, New York City

MLS: RLS20061245 RLS at REBNY
21 W 17th Street #6 For Sale
Michael Bethoney at Nest Seekers LLC
$2,800,000

3 bd · 2 ba · 1,427 sqft · Condo

21 W 17th Street #6, New York City

MLS: RLS20081275 RLS at REBNY
22 W 15TH Street #8J For Sale
Kim S Littlefield at Douglas Elliman Real Estate
$995,000

1 bd · 1 ba · Condo

22 W 15TH Street #8J, New York City

MLS: RLS20088962 RLS at REBNY
5 E 22ND Street #22P For Sale
Barbara C Licalzi at Brown Harris Stevens Residential Sales LLC
$4,995,000

3 bd · 3 ba · 1,956 sqft · Condo

5 E 22ND Street #22P, New York City

MLS: RLS20085874 RLS at REBNY
21 E 22nd Street #PH12F For Sale
Toni Haber at Compass
$1,995,000

2 bd · 1 ba · Co-op

21 E 22nd Street #PH12F, New York City

MLS: RLS20056947 RLS at REBNY

Showing 12 of 23 outdoor space apartments

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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

Apartments With Outdoor Space for Sale in NYC

Private outdoor space is among the most sought-after features in the NYC apartment market. A true private terrace over 200 square feet can command a 20-35% premium over equivalent interior square footage. In my experience working with buyers across Brooklyn Heights, Astoria, and Upper Manhattan, understanding the maintenance responsibilities, legal status, and structural condition of any outdoor space is essential before making an offer.

FAQ: Who maintains a private terrace in a NYC co-op or condo?

This varies by building. In most NYC co-ops, the terrace is a limited common element: the shareholder has exclusive use but the building retains structural responsibility. If the waterproofing membrane fails, repair costs may be shared. Have your attorney review the outdoor space provisions. See our co-op buying guide for details.

FAQ: Is outdoor space included in the listed square footage?

No. In NYC, outdoor terrace and balcony square footage is not included in the interior square footage. A listing showing "850 sq ft with 200 sq ft terrace" means 850 square feet of interior space. Ask for a floor plan showing both interior and exterior dimensions.

FAQ: Can I enclose or modify my NYC apartment terrace?

Generally not without board approval and NYC DOB permits. Most buildings prohibit permanent structures on terraces. Enclosing a terrace requires both building and DOB approval. Request the building's alteration rules before purchasing with renovation plans. Our property search includes current outdoor space listings.

Buying Tip from Milton Coste

Check the terrace's orientation and what faces it. A north-facing terrace flanked by tall towers may receive almost no sunlight. A south-facing terrace with unobstructed views can be one of the most valuable assets in NYC. Also ask about the waterproofing membrane's age: resurfacing can cost $30,000-$80,000+ and may be assessed to you.

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
Parking

Dedicated parking in the city that never sleeps
Elevator

Easy access on every floor
Penthouse

Top-floor luxury with panoramic city views
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

Outdoor Space Apartments in Other Manhattan Neighborhoods

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

Looking for Outdoor Space Apartments in Flatiron?

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Milton Coste, Licensed Real Estate Associate Broker, KWNYC