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Kathleen Gillies is the Career and Business Development Leader for Howard Hanna-Coach Realtors' West Sayville office, guiding a team of dedicated real estate professionals who live and work in the community. Her experience as an agent helps her understand the concerns and needs of her team. Coach Realtors provides an atmosphere of elevated success for their sales associates by providing them with educational advancement, technical expertise, a dedicated marketing team, and the personnel to provide the agents the tools to offer the highest level of service to our customers, and clients. Kathleen takes pride in the many letters received from former clients sharing their thanks for the outstanding service received from their Coach Realtors sales associates.

Kathleen Gillies began her real estate career in 1993 with her sister Beth Rowsell. Kathleen and Beth were partners in Sutton Place Realty, a boutique real estate office within their family insurance agency, Sutton Insurance. They joined Coach Realtors in 2006 and are proud to be part of an original team in the East Islip office. Kathleen and Beth have been listing and selling property on Long Island's South Shore for over 30 years. They have sold homes to several generations of the same families, as well as selling the same homes a few times! With their local knowledge and the ability to offer global relocation, Kathleen and Beth are valued resources in their community and continue to enjoy working together as a team to help people reach their real estate goals.

If you are thinking about a career in real estate, or are currently working as a Realtor and would like to learn more about the tools and training offered by Coach Realtors, please contact Kathleen for a confidential interview. If you’re searching for a new home, looking to sell a current home, or if you just want to check the market, call Kathleen now!

Kathleen Gillies
KathleenGillies
Client
Thoughts

- Jimmy S.

Courteous, kind, helpful throughout our whole home purchase. 10/10 would recommend.

- Paul A.

Kathleen provided amazing guidance during a challenging time to search for a first house, making the process as smooth as possible while offering helpful insights. I cannot thank her enough!!

- Garry C., Seller

Kathleen's many years of experience plus my initial personal interaction over 10 years ago made me trust her with her recommendations on how to best sell my condo. She is extremely professional, very ethical and highly dedicated.

- Linda L., Seller

Both Beth and Kathleen were the best thru the whole process. They were there to answer any questions and also knew when I needed answers without the questions being asked. I could not have made it thru without their help and guidance!!

- Karen G. , Seller

Kathleen was...great. Very professional and knowledgeable. I would definitely recommend her.

- Barbara C., Seller

Beth and Kathleen provided excellent service and friendship, as well. They were always there for me and my concerns. Highly recommend them!

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 04/18/2026. The listing information on this page last changed on 04/18/2026. 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 Sat 04/18/2026 2:01:40 AM EST) or OneKey MLS (last updated Sat 04/18/2026 1:45:20 AM EST). Real estate listings held by brokerage firms other than Howard Hanna | Coach Realtors 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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Agency License Information: https://www.coachrealtors.com New York State Real Estate Broker Principal Office License Number: 10991237973


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