Milton Coste

12 Upper West Side Sponsor Unit Co-ops

Buy direct from the sponsor, no board approval needed in Upper West Side, Manhattan

All NYC Upper West Side
12 results
229 W 97th Street #4F For Sale 3D
Avraham Y Eisenstein at Sovereign Associates Inc
$1,249,000

2 bd · 2 ba · Co-op

229 W 97th Street #4F, New York City

MLS: RLS20098811 RLS at REBNY
134 W 80TH Street #PARLOR For Sale
Ann Ferguson at Ann Ferguson LLC
$799,000

1 bd · 2 ba · Co-op

134 W 80TH Street #PARLOR, New York City

MLS: RLS20070709 RLS at REBNY
62 W 87TH Street #1F For Sale
Ann Ferguson at Ann Ferguson LLC
$530,000

1 bd · 1 ba · Co-op

62 W 87TH Street #1F, New York City

MLS: RLS20076324 RLS at REBNY
265 RIVERSIDE Drive #3E For Sale
Kari E Kaplan at Douglas Elliman Real Estate
$950,000

1 bd · 1 ba · Co-op

265 RIVERSIDE Drive #3E, New York City

MLS: RLS20086663 RLS at REBNY
150 W 95TH Street #7A For Sale
Maria Carreras Kourepenos at Coldwell Banker Warburg
$620,000

2 bd · 2 ba · Co-op

150 W 95TH Street #7A, New York City

MLS: RLS20097167 RLS at REBNY
100 RIVERSIDE Drive #5E For Sale
Santiago J Steele at Corcoran Group
$1,450,000

2 bd · 1 ba · 1,285 sqft · Co-op

100 RIVERSIDE Drive #5E, New York City

MLS: RLS20039627 RLS at REBNY
256 W 88TH Street #PH For Sale
Ravi Kantha at Serhant
$1,835,000

2 bd · 2 ba · 1,048 sqft · Co-op

256 W 88TH Street #PH, New York City

MLS: RLS20097884 RLS at REBNY
145 W 80TH Street #4R For Sale 3D
Ann Ferguson at Ann Ferguson LLC
$599,000

1 bd · 1 ba · Co-op

145 W 80TH Street #4R, New York City

MLS: RLS20061939 RLS at REBNY
132 W 80TH Street #4R For Sale 3D
Ann Ferguson at Ann Ferguson LLC
$595,000

1 bd · 1 ba · Co-op

132 W 80TH Street #4R, New York City

MLS: RLS20065156 RLS at REBNY
130 W 80TH Street #5R For Sale 3D
Ann Ferguson at Ann Ferguson LLC
$595,000

1 bd · 1 ba · Co-op

130 W 80TH Street #5R, New York City

MLS: RLS20065178 RLS at REBNY
100 RIVERSIDE Drive #17E For Sale 3D
Santiago J Steele at Corcoran Group
$1,395,000

1 bd · 1 ba · 818 sqft · Co-op

100 RIVERSIDE Drive #17E, New York City

MLS: RLS20087979 RLS at REBNY
215 W 92ND Street #9G For Sale 3D
Santiago J Steele at Corcoran Group
$1,395,000

2 bd · 1 ba · Co-op

215 W 92ND Street #9G, New York City

MLS: RLS20075546 RLS at REBNY

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

Sponsor Unit Co-ops for Sale in NYC

Sponsor unit co-ops are apartments sold directly by the building's original developer or conversion sponsor, without requiring co-op board approval. This is one of the most strategically valuable categories in the NYC resale market, particularly for buyers who may not qualify for traditional board approval. In my 25+ years as a Licensed Real Estate Associate Broker, I have guided many buyers toward sponsor units when the board path was uncertain or speed of closing was a priority. Browse our co-op inventory, read our board interview guide, and review Upper East Side co-op data.

What is a sponsor unit?

A sponsor unit is an apartment that has never been sold by the original conversion sponsor since the building converted from rental to cooperative ownership. The sponsor can sell shares directly to a buyer without board approval, governed by the Attorney General-accepted offering plan.

What are the advantages?

No board approval makes sponsor units accessible to self-employed buyers, foreign nationals, and investors purchasing pieds-a-terre. Closings move faster without board interview scheduling. Some sponsors offer 10 percent down in buildings that otherwise require 20 to 25 percent.

Are there risks unique to sponsor units?

Buyers typically pay NY State and NYC transfer taxes (normally the seller's responsibility), adding 1.825 to 2.075 percent to transaction cost. Units may not have been renovated, and disclosure obligations differ from standard seller disclosure. Have your attorney review the offering plan amendment before signing.

Buying Tip from Milton Coste

Before making an offer, your attorney should pull the most recent offering plan amendment from the NY State Attorney General's office to confirm the sponsor is in good standing. An outdated or lapsed offering plan can complicate financing and title.

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