ABS Partners Real Estate
200 Park Avenue South, 10th Floor
New York, NY 10003
(212) 400-6060
Website
Steven Hornstock is co-managing partner and director of investment sales at ABS Partners Real Estate, a New York City-based brokerage, consultancy, and property management firm. He is an active sales broker in New York City and continues to source and acquire investment properties for clients of ABS. His work experience has also included residential development and land assemblage. Like many ABS employees and especially its founding partners, Hornstock is an ex-Helmsley-Spear executive. He is also a New York native who grew up in Jamaica, Queens. From 1991 to 1999, he worked as director of investment sales at the real estate firm founded by the late tycoon Harry B. Helmsley.
In its day, Helmsley-Spear was the largest privately held real estate company in the United States, but was gradually wound down following its founders death in 1997 and acquired in 2007 by a Kent Swig-led investment group. From the 1980s to 1991, Hornstock was a co-founding partner of Sutton East Associates, a New York City-based residential development firm. He got his start in real estate working as assistant controller for a Long Island shopping center developer, Slayton Associates, where he managed the books and records.
He is a licensed real estate broker in the State of New York since 1976 and an active member of the Sales Brokers Committee of the Real Estate Board of New York (REBNY). He is also a founding board member of the New York Owners Council. In 1971, Hornstock received his BS in accounting from Bentley College, now Bentley University, in Waltham, Massachusetts, and completed the Real Estate certificate program at New York University. He has also worked as a columnist for a horseracing magazine, Daily Racing Form. Hornstock lives on Long Island and has two grandchildren. -MK
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200 Park Avenue South, 10th Floor, New York, NY, (212) 400-6060
200 Park Avenue South, 10th Floor, New York, NY, (212) 400-6060
200 Park Avenue South, 10th Floor, New York, NY, (212) 400-6060
200 Park Avenue South, 10th Floor, New York, NY, (212) 400-6060
200 Park Avenue South, 10th Floor, New York, NY, (212) 400-6060
200 Park Avenue South, New York, NY, (212) 400-6060
200 Park Avenue, New York, NY, (212) 400-6060
200 Park Avenue South, 10th Floor, New York, NY, (212) 400-6060
200 Park Avenue South, New York, NY, (212) 400-6060

200 Park Avenue South, New York, NY, (212) 400-6060

200 Park Avenue South, New York, NY, (212) 400-6060

200 Park Avenue South, New York, NY, (212) 400-6060

200 Park Avenue South, New York, NY, (212) 400-6060

200 Park Avenue South, New York, NY, (212) 400-6060

200 Park Avenue South, New York, NY, (212) 400-6060

200 Park Avenue South, New York, NY, (212) 400-6060

200 Park Avenue South, New York, NY, (212) 400-6060

200 Park Avenue South, New York, NY, (212) 400-6060

200 Park Avenue South, New York, NY, (212) 400-6060

200 Park Avenue South, New York, NY, (212) 400-6060

200 Park Avenue South, New York, NY, (212) 400-6060

200 Park Avenue South, New York, NY, (212) 400-6060

200 Park Avenue South, New York, NY, (212) 400-6060

200 Park Avenue South, New York, NY, (212) 400-6060

200 Park Avenue South, New York, NY, (212) 400-6060
- Event Office Leasing
- Address 1001 Sixth Avenue
- Neighborhood Garment District
- Borough Manhattan
- Square feet 12,017
- Publication Date 02/21/2018
- Event Date 02/15/2018
- Party 1 1001 Sixth LLC
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker James Caseley, AlisonMiller, Gregg Schenker, Earle Altman, Steven Hornstock
- Party 2 Accutime Watch Corp
- Party 2 Broker James Caseley, Alison Miller, Gregg Schenker, Earle Altman, Steven Hornstock
- Event Office Leasing
- Address 20 West 22nd Street
- Neighborhood Flatiron
- Borough Manhattan
- Square feet 1,363
- Publication Date 02/21/2018
- Event Date 02/15/2018
- Party 1 200 Park Avenue South Associates
- Party 2 RNG Studios FKA National Hong Kong Electronics & Watch Corp.
- Party 2 Brokerage ABS Partners Real Estate
- Party 2 Broker Jason Fein, Robert Finkelstein, Gregg Schenker, Steven Hornstock, Earle Altman
- Event Office Leasing
- Address 15 West 27th Street
- Neighborhood Nomad
- Borough Manhattan
- Square feet 2,500
- Publication Date 02/21/2018
- Event Date 02/15/2018
- Party 1 13-15 West 27th Properties
- Party 2 Prometheus Global Media
- Party 2 Brokerage ABS Partners Real Estate
- Party 2 Broker Jeff Sharon, Steven Hornstock
- Event Office Leasing
- Address 20 West 22nd Street
- Neighborhood Flatiron
- Borough Manhattan
- Square feet 298
- Publication Date 02/06/2018
- Event Date 01/12/2018
- Party 1 20 West 22nd Street Associates
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker Jason Fein, Robert Finkelsten, Gregg Schenker, Earle Altman, Steven Hornstock
- Party 2 CFA Management
- Event Office Leasing
- Address 20 West 22nd Street
- Neighborhood Flatiron
- Borough Manhattan
- Square feet 1,390
- Publication Date 02/06/2018
- Event Date 01/12/2018
- Party 1 20 West 22nd Street Associates
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker Jason Fein, Robert Finkelsten, Gregg Schenker, Earle Altman, Steven Hornstock
- Party 2 Engelman & Co
- Event Office Leasing
- Address 20 West 22nd Street
- Neighborhood Flatiron
- Borough Manhattan
- Square feet 1,259
- Publication Date 02/06/2018
- Event Date 01/12/2018
- Party 1 20 West 22nd Street Associates
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker Jason Fein, Robert Finkelsten, Gregg Schenker, Earle Altman, Steven Hornstock
- Party 2 Fresh Paint Contractors
- Event Office Leasing
- Address 1001 Sixth Avenue
- Neighborhood Midtown South
- Borough Manhattan
- Square feet 1,947
- Publication Date 02/06/2018
- Event Date 01/12/2018
- Party 1 1001 Sixth Associates
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker James Caseley, Gregg Schenker, Earle Altman, Steven Hornstock
- Party 2 Infrostretch Corp.
- Party 2 Brokerage Vicus Partners
- Party 2 Broker Waite Buckley
- Event Office Leasing
- Address 200 Park Avenue South
- Neighborhood Gramercy Park
- Borough Manhattan
- Square feet 945
- Publication Date 12/12/2017
- Event Date 12/07/2017
- Party 1 200 Park South Associates
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker Jay Caseley, Charles Conwell, Gregg Schenker, Steven Hornstock
- Party 2 Chambers Street Capital
- Event Office Leasing
- Address 200 Park Avenue South
- Neighborhood Gramercy Park
- Borough Manhattan
- Square feet 1,127
- Publication Date 10/16/2017
- Event Date 10/13/2017
- Party 1 200 Park South Associates, LLC
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker James Caseley, Charles Conwell, Earle Altman, Gregg Schenker, Steven Hornstock
- Party 2 Vista Property
- Party 2 Brokerage Gotham Realty
- Party 2 Broker Jimmyu Ishay
- Event Office Leasing
- Address 200 Park Avenue South
- Neighborhood Gramercy Park
- Borough Manhattan
- Square feet 1,890
- Publication Date 10/16/2017
- Event Date 10/13/2017
- Party 1 200 Park South Associates, LLC
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker James Caseley, Charles Conwell, Earle Altman, Gregg Schenker, Steven Hornstock
- Party 2 Mopo Productions
- Event Office Leasing
- Address 20 West 22nd Street
- Neighborhood Flatiron
- Borough Manhattan
- Square feet 1,838
- Publication Date 09/15/2017
- Event Date 09/14/2017
- Party 1 20 West 22nd Street Associates
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker Jason Fein, Robert Finkelstein, Gregg Schenker, Steven Hornstock, Earle Altman
- Party 2 Accel Food Partners
- Party 2 Brokerage Murray Hill Properties
- Party 2 Broker Catherine Vilar
- Event Office Leasing
- Address 270 Madison Avenue
- Neighborhood Midtown South
- Borough Manhattan
- Square feet 4,112
- Publication Date 09/15/2017
- Event Date 09/14/2017
- Party 1 270 Madison Avenue Associates LLC, Independence 270 Madison LLC
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker Robert Finkelstein, Alex Kaskel, Gregg Schenker, Peter Burack, Steven Hornstock, Jeff Sharon
- Party 2 Levites Family Trust 2015
- Party 2 Brokerage ABS Partners Real Estate
- Party 2 Broker Mark Tergesen, Joseph Italaander
- Event Office Leasing
- Address 29 West 38th Street
- Neighborhood Midtown South
- Borough Manhattan
- Square feet 7,150
- Publication Date 09/15/2017
- Event Date 09/14/2017
- Party 1 29 West 38 Associates LLC
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker Charles Conwell, Gregg Schenker, Earle Altman and Steven Hornstock
- Party 2 M-E Engineers
- Event Office Leasing
- Address 270 Madison Avenue
- Neighborhood Midtown South
- Borough Manhattan
- Square feet 7,805
- Publication Date 09/15/2017
- Event Date 09/14/2017
- Party 1 270 Madison Avenue Associates LLC, Independence 270 Madison LLC
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker Robert Finkelstein, Alex Kaskel, Gregg Schenker, Peter Burack, Steven Hornstock, Jeff Sharon
- Party 2 New Castle Realty Services
- Party 2 Brokerage ABS Partners Real Estate
- Party 2 Broker Robert Finkelstein, Alex Kaskel, Gregg Schenker, Peter Burack, Steven Hornstock, Jeff Sharon
- Event Office Leasing
- Address 20 West 22nd Street
- Neighborhood Flatiron
- Borough Manhattan
- Square feet 9,382
- Publication Date 09/15/2017
- Event Date 09/14/2017
- Party 1 20 West 22nd Street Associates
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker Jason Fein, Robert Finkelstein, Gregg Schenker, Steven Hornstock, Earle Altman
- Party 2 VM Architecture Studio PC
- Party 2 Brokerage Retail Strategies
- Party 2 Broker Mark Finkelstein
- Event Office Leasing
- Address 20 West 22nd Street
- Neighborhood Flatiron
- Borough Manhattan
- Square feet 1,507
- Publication Date 08/01/2017
- Event Date 07/13/2017
- Party 1 20 West 22nd Street Associates
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker Jason Fein, Robert Finkelstein, Gregg Schenker, Steven Hornstock, Earle Altman
- Party 2 Jonathan F. Walsh, Mark Kornspan
- Event Office Leasing
- Address 20 West 22nd Street
- Neighborhood Flatiron
- Borough Manhattan
- Square feet 2,298
- Publication Date 08/01/2017
- Event Date 07/13/2017
- Party 1 20 West 22nd Street Associates
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker Jason Fein, Robert Finkelstein, Gregg Schenker, Steven Hornstock, Earle Altman
- Party 2 Villency Design Group
- Event Office Leasing
- Address 115 West 27th Street
- Neighborhood Chelsea
- Borough Manhattan
- Square feet 2,500
- Publication Date 08/01/2017
- Event Date 07/13/2017
- Party 1 115 W 27th
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker Jeff Sharon, Steven Hornstock
- Party 2 Reasons Foundation
- Party 2 Brokerage Newmark Grubb Knight Frank
- Party 2 Broker Jordan Gosin, Brett Brevidian
- Event Office Leasing
- Address 915 Broadway
- Neighborhood Flatiron
- Borough Manhattan
- Square feet 2,775
- Publication Date 08/01/2017
- Event Date 07/13/2017
- Party 1 915 Broadway Associates
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker James Caseley, Carol Sacks, Alex Kaskel, Gregg Schenker, Steven Hornstock
- Party 2 Radian Capital
- Party 2 Brokerage CBRE
- Party 2 Broker Jeff Fischer, Joe D'Apice
- Event Office Leasing
- Address 915 Broadway
- Unit 803
- Neighborhood Flatiron
- Borough Manhattan
- Square feet 3,218
- Publication Date 08/01/2017
- Event Date 07/13/2017
- Party 1 915 Broadway Associates
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker James Caseley, Carol Sacks, Alex Kaskel, Gregg Schenker, Steven Hornstock
- Party 2 Breather Products
- Party 2 Brokerage CBRE
- Party 2 Broker Ramsey Reher
- Event Office Leasing
- Address 20 West 22nd Street
- Neighborhood Flatiron
- Borough Manhattan
- Square feet 3,797
- Publication Date 08/01/2017
- Event Date 07/13/2017
- Party 1 20 West 22nd Street Associates
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker Jason Fein, Robert Finkelstein, Gregg Schenker, Steven Hornstock, Earle Altman
- Party 2 Grok
- Event Office Leasing
- Address 1001 Sixth Avenue
- Neighborhood Garment District
- Borough Manhattan
- Square feet 5,314
- Publication Date 08/01/2017
- Event Date 07/13/2017
- Party 1 1001 Sixth Associates
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker James Caseley, T. Schwartz, Earle Altman, Gregg Schenker, Steven Hornstock
- Party 2 Simmons Research
- Party 2 Brokerage MHP
- Party 2 Broker Jesse Rubens, Jessica Trizano
- Event Office Leasing
- Address 200 Park Avenue South
- Neighborhood Gramercy Park
- Borough Manhattan
- Square feet 6,542
- Publication Date 08/01/2017
- Event Date 07/13/2017
- Party 1 200 Park South Associates
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker James Caseley, Charles Conwell, Gregg Schenker, Earle Altman, Steven Hornstock, A. Friedman
- Party 2 Altman Greenfield & Selvaggi
- Event Office Leasing
- Address 200 Park Avenue South
- Neighborhood Gramercy Park
- Borough Manhattan
- Square feet 6,961
- Publication Date 08/01/2017
- Event Date 07/13/2017
- Party 1 200 Park South Associates
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker Alan Friedman, Charles Conwell, G. Schenker, Earle Altman, Steven Hornstock
- Party 2 Betsy & Ronnie Inc.
- Event Office Leasing
- Address 200 Park Avenue South
- Neighborhood Gramercy Park
- Borough Manhattan
- Square feet 6,961
- Publication Date 08/01/2017
- Event Date 07/13/2017
- Party 1 200 Park South Associates
- Party 1 Brokerage ABS Partners Real Estate
- Party 1 Broker Alan Friedman, Charles Conwell, G. Schenker, Earle Altman, Steven Hornstock
- Party 2 Iachn School of Medicine at Mount Sinai
- Party 2 Brokerage Skylight Leasing
- Party 2 Broker Elie Reiss