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(516) 244-9985
(516) 244-9985 Email (516) 244-9985
Aideen Duignan
Licensed Salesperson
REALTOR®
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Customer Reviews View all reviews

Peter Jaffe

Testimonial

Aideen was so helpful and thoughtful. She made the buying process simple. I would recommend her to anyone looking to buy or sell a house without reservation. Amazing job

Keith Scott

Testimonial

Adeen is exceptional! Responsive, solution oriented, communicative- everything one could want in a realtor! I highly recommend Adeen!!

Carolyn Middleton

Testimonial

I have known Aideen for years. She is a fantastic agent. She is very familiar with the real estate market and knows how to market properly to bring buyers/sellers to the table. My co-op in East Rocka... read more

Susan Hazel ( Suzanne Sullivan as Trustee)

Testimonial

I highly recommend Aideen. I have worked with Aideen over the years for several properties. She is knowledgeable, hardworking, and efficient. Aideen keeps in constant communication regarding all phas... read more

Pantigo Bay Holding Company LLC

Testimonial

She always gets back to you and nothing is too much trouble

Clarissa Reyes

Testimonial

As a first time homebuyer I had no prior knowledge or experience. The realtor made this process comfortable and easy to follow. My closing took longer than expected, but the realtor made every eff... read more

About Aideen Duignan

As a seasoned real estate agent with 26+ years of experience, I have dedicated my career to successfully selling homes on Long Island in Nassau and Suffolk County as well as Queens and Brooklyn, with a special focus on the beautiful South Shore of Long Island. My deep knowledge of the local market, combined with my commitment to honesty, integrity, and hard work, ensures that each of my clients receives the best possible service. Living in Oceanside for the past 30 years and raising four boys here has given me an intimate understanding of the community and its neighborhoods. In addition to my professional experience, I take pride in supporting and working with veterans, bringing a compassionate and reliable approach to every interaction. My patience and dedication to my clients' satisfaction are the cornerstones of my practice, and I strive to make every real estate experience happy and fulfilling.

  • Over 26 Years of Real Estate Sales Experience
  • 30 Year Resident of Oceanside
  • 2024 International President's Circle Award
  • 2023 Diamond Award Coldwell Banker American Homes
  • Multi Real Estate Award Winner

Featured Homes

Aideen Duignan Blog

Navigating Your Future: Introducing Community@American Homes & Our First Medicare Workshop

At Coldwell Banker American Homes, we believe that being a real estate partner means more than just helping you buy or sell a house—it means being an active, supportive part of the place you call ho... read more


The Heart of the Move: Why Agents Thrive at Coldwell Banker American Homes

The transformation of a house into a home is one of the most significant journeys an individual can take. At Coldwell Banker American Homes, our team is dedicated to guiding clients through this miles... read more


Aideen Duignan
Aideen Duignan Office: (516) 665-2000 Cell: (516) 244-9985 Fax: (516) 432-2001 Email Me
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©2024 1864 Hempstead Turnpike Realty Inc. All rights reserved. Coldwell Banker® and the Coldwell Banker Logo are registered service marks owned by Coldwell Banker Real Estate LLC. 1864 Hempstead Turnpike Realty Inc. fully supports the principles of the Fair Housing Act and the Equal Opportunity Act. Each office is independently owned and operated. Any services or products provided by independently owned and operated franchisees are not provided by, affiliated with or related to Coldwell Banker Real Estate LLC nor any of its affiliated companies. Disclaimer: All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information on this site was last updated 04/24/2026. The listing information on this page last changed on 04/24/2026. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of Delta Media Group MLS (last updated Fri 04/24/2026 12:19:44 AM EST) or OneKey MLS (last updated Fri 04/24/2026 12:14:18 AM EST). Real estate listings held by brokerage firms other than Coldwell Banker American Homes may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS. All rights reserved.
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