Milton Coste

23 Flatiron Outdoor Space Apartments

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

All NYC Flatiron
23 results
6 W 20TH Street #2 For Sale 3D
Corrin Thomas at Serhant
$5,500,000

4 bd · 4 ba · 4,400 sqft · Co-op

6 W 20TH Street #2, New York City

MLS: RLS20118860 RLS at REBNY
29 W 21st Street #MAIS For Sale 3D
Kevin Lam at Compass
$2,950,000

3 bd · 3 ba · 2,584 sqft · Condo

29 W 21st Street #MAIS, New York City

MLS: RLS20114998 RLS at REBNY
122 E 25th Street #PH7 For Sale
Michael S Meier at Sothebys International Realty
$6,495,000

5 bd · 4 ba · 4,700 sqft · Condo

122 E 25th Street #PH7, New York City

MLS: RLS20120182 RLS at REBNY
50 LEXINGTON Avenue #16D For Sale
Jonathan Jossen at Corcoran Group
$1,150,000

2 bd · 2 ba · Co-op

50 LEXINGTON Avenue #16D, New York City

MLS: RLS20090437 RLS at REBNY
20 W 15TH Street #6 For Sale 3D
Mallory G Bogard at Serhant
$2,475,000

2 bd · 2 ba · 999 sqft · Condo

20 W 15TH Street #6, New York City

MLS: RLS20119677 RLS at REBNY
21 W 17th Street #4 For Sale
Michael Bethoney at Nest Seekers LLC
$2,600,000

3 bd · 2 ba · 1,427 sqft · Condo

21 W 17th Street #4, New York City

MLS: RLS20124162 RLS at REBNY
17 E 16th Street #12 A&B For Sale
Christopher Breslin at Compass
$4,500,000

3 bd · 2 ba · Co-op

17 E 16th Street #12 A&B, New York City

MLS: RLS20034776 RLS at REBNY
32 E 22nd Street #PH For Sale
Victoria A Terri-Cote at Cote Luxury Real Estate
$10,000,000

3 bd · 4 ba · 3,683 sqft · Condo

32 E 22nd Street #PH, New York City

MLS: RLS20119008 RLS at REBNY
40 E 19TH Street #PH For Sale 3D
Rachel A Glazer at Brown Harris Stevens Residential Sales LLC
$9,995,000

5 bd · 5 ba · Co-op

40 E 19TH Street #PH, New York City

MLS: RLS20113389 RLS at REBNY
260 Park Avenue S #4B For Sale
Kelly A Robinson at Compass
$4,250,000

2 bd · 3 ba · 1,880 sqft · Condo

260 Park Avenue S #4B, New York City

MLS: RLS20105129 RLS at REBNY
889 Broadway #2A For Sale
Micah Byrnes at Compass
$1,950,000

2 bd · 1 ba · 1,400 sqft · Co-op

889 Broadway #2A, New York City

MLS: RLS20123385 RLS at REBNY
16 W 19th Street #3D For Sale
Nick Oliver at Hauseit LLC
$1,185,000

1 bd · 1 ba · 908 sqft · Condo

16 W 19th Street #3D, New York City

MLS: RLS20093900 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 sole 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.

Milton Coste, Licensed Real Estate Associate Broker

Milton Coste

Licensed Real Estate Associate Broker

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Milton Coste, Licensed Real Estate Associate Broker, KWNYC