Milton Coste

23 Flatiron Outdoor Space Apartments

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

All NYC Flatiron
23 results
50 LEXINGTON Avenue #12B For Sale
Adam Hernandez at Corcoran Group
$599,999

1 bd · 1 ba · Co-op

50 LEXINGTON Avenue #12B, New York City

MLS: RLS20073536 RLS at REBNY
17 E 16th Street #12 A&B For Sale
Christopher Breslin at Compass
$5,300,000

3 bd · 2 ba · Co-op

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

MLS: RLS20034776 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
50 LEXINGTON Avenue #16D For Sale
Jonathan Jossen at Corcoran Group
$1,350,000

2 bd · 2 ba · Co-op

50 LEXINGTON Avenue #16D, New York City

MLS: RLS20090437 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
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
121 E 23RD Street #6D For Sale
Jill H Preschel at Serhant
$1,755,000

2 bd · 2 ba · 1,198 sqft · Condo

121 E 23RD Street #6D, New York City

MLS: RLS20073643 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
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
5 E 22ND Street #PHDF For Sale
Ryan Stenta at Douglas Elliman Real Estate
$10,900,000

5 bd · 4 ba · 3,617 sqft · Condo

5 E 22ND Street #PHDF, New York City

MLS: RLS20096000 RLS at REBNY
260 PARK Avenue #10I For Sale
Frances W Katzen at Douglas Elliman Real Estate
$2,199,000

2 bd · 3 ba · 1,328 sqft · Condo

260 PARK Avenue #10I, New York City

MLS: RLS20046865 RLS at REBNY
40 W 17th Street #PH12C For Sale
ADAM MILLER at Compass
$2,850,000

3 bd · 2 ba · Co-op

40 W 17th Street #PH12C, New York City

MLS: RLS20091066 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.

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