DAN CASTELLANO
Sales Director

Office: 516-393-2300
Cell: 917-843-2680
Email: DanC@aiprops.com

Dan Castellano serves as an Investment Sales Director at American Investment Properties (AIP), where he specializes in helping commercial property owners in Queens and Long Island achieve the highest possible value for their assets.

With more than 25 years of professional sales experience, Dan is a trusted advisor to his clients, known for his dedication, honesty, and integrity. He prides himself on building long-term relationships grounded in trust and providing exceptional service throughout every stage of the sales process. His client-first approach, combined with deep market knowledge and negotiation expertise, allows him to deliver successful outcomes and peace of mind for property owners.

A native of Queens and a graduate of St. John’s University, Dan brings both local insight and professional experience to each transaction. He resides in Commack, NY with his wife and three daughters, and enjoys spending time with family and friends outside of work.

Meet Our Team:

Pearl Pattarin – Sales Associate2025-11-18T12:29:41-05:00
Pearl Pattarin – Sales Associate
,
Dawn Assael Gingold – Sales Associate2022-12-20T16:50:26-05:00
Dawn Assael Gingold – Sales Associate
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Dan Castellano – Sales Director2025-09-12T12:07:19-04:00
Dan Castellano – Sales Director
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Kathryn Treacy – Operations Manager2023-03-27T12:07:55-04:00
Kathryn (Katie) Treacy, Operations Manager of American Investment Properties
Kathryn Treacy – Operations Manager
Ron Koenigsberg, CCIM – President2021-12-03T10:21:02-05:00
Ron Koenigsberg - Commercial Real Estate Broker
Ron Koenigsberg, CCIM – President