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Dianeās Concierge Page
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LinkedInCertifications
Listing and Selling Agent (LSA)
Certified Buyer Representative (CBR)
Commercial and Investment Real Estate (CIRE
About Diane
With over two decades of experience in the real estate market, specifically on the South Shore of Long Island, Diane has built a career on integrity, strategy, and exceptional client service. As a Licensed Real Estate Salesperson at Compass, Diane brings not only a deep understanding of market trends and property values but also a true passion for helping people make meaningful movesāwhether itās buying their first home, upsizing for a growing family, or selling a beloved estate.
Throughout Diane's career, she has developed a sharp eye for staging and presentation, a knack for strategic pricing, and a reputation for fierce negotiation that consistently delivers results. Her background spans luxury homes, co-ops, condos, waterfront properties, and family residences throughout the North Shore and beyond. She has the privilege of working with a wide range of clients, from lifelong locals to those relocating from out of state, and she prides herself on making every transaction feel personal, informed, and seamless.
Diane's clients know her for her honesty, attentiveness, and unwavering commitment. She believes in building relationships, not just closing deals. That means listening closely, offering trusted guidance, and advocating every step of the way. She's a natural problem solver and communicator who thrives in fast-paced, high-stakes environmentsāalways remaining calm under pressure and staying two steps ahead.
By partnering with Compass,
Diane offers her clients cutting-edge tools, data-driven insights, and elevated marketing that provide a true advantage in todayās market. From custom branding and digital exposure to private exclusive listings and Compass Concierge services, she brings modern innovation to traditional values.
What are Diane's proudest achievements? Referrals and repeat clients who trust her time and again!
Client Testimonials
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I donāt even know where to begin. Diane was outstanding. This is the kind of experience you could only hope to have with a realtor. Diane is SO kind, SO available, SO flexible, SO knowledgeable- seriously the list goes on and on. Diane closed the deal for my husband and I in UNDER A WEEK. Our home couldāve easily gotten into a bidding war and because Diane is a professional, and respected by so many in her field- she somehow got the deal done for us, like magic. I wish I had better words to explain how fantastic she is- truly from start to finish. I will literally never ever use ANYONE else (although I donāt plan on moving), or recommend anyone else besides Diane from now on. I mean it. If you want someone to deliver you your dream home and get the job done, this is the realtor for you. I feel bad for anyone who does not have Diane with them for this process. She is wonderful.- Dustin
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Where do I even begin... My boyfriend and I were looking for our first home and we were introduced to Diane through my father. We were not sure what to expect since it was our first time buying but we were completely blown away. Diane is by far one of the most professional and knowledgeable woman we have ever met. She really listened to what John and I wanted and always kept us in the loop when a new house was listed. Diane was very honest and was sure to tell us her honest opinion on each house. We really appreciated that. When we first saw our home, Diane walked through it with us and was pointing out every little thing that I didn't even think to look for. There's only so much a Google check list can tell you! After our offer was accepted, Diane reached out every day to make sure we knew what to do next to help make the process as simple as possible. She had contacts for everything which helped move everything along. Each person she recommended was more professional than the next. Diane put together an Allstar team for us and made the whole home buying process extremely easy. It's also a huge bonus that she is an absolute delightful woman! John and I can not thank Diane enough and we would 100% recommend her over any other realtor out there!!-Elizabeth
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Diane Betz is the best!! If you want a premier south shore agent - look no further. Diane sold our Suffolk County condo in less than one week!! Diane also showed us numerous houses on the south shore and was patient until we found "the one." Diane was knowledgeable and professional!! I always looked forward to looking at properties with Diane because she has a great personality and made the process fun. As nice as Diane is, she is sharp and a great negotiator. Diane was able to get us the house of our dreams at the price we wanted and OVER ASKING on our condo sale. Whether you are listing or selling - go with Diane Betz!! Thank you Diane for everything!! -Lisa & Mik
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My wife and I have been working with Diane for over two years. Diane handled both the sale of our home and our new purchase. Diane was extraordinarily knowledgeable, understanding, and flexible in showing us properties that worked with our stated needs and goals. With those homes that we wanted to see, Diane was extremely professional, while still sensitive to our wants and our āwishlistā, checking our boxes and answering the question of why move. We could not recommend anyone more highly than Diane.- Gianna
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Absolutely loved working with Diane. I was referred to Diane by my sister who purchased her home in West Bay Shore through Diane two years ago. The house wasnāt even on the market anymore but Diane was able to get them access and quickly close the deal! I was looking for a house in Brightwaters and chose Diane based off my sisterās recommendation as well as her vast network and knowledge of the area. Brightwaters is a very small town with low inventory and I would have never found my dream home without her. Why? Sheās a SHARK. This isnāt a side hustle for her, or a new career path sheās trying out, like so many other realtors Iāve worked with. This is her life and she has worked very hard and for a long time to be the best at what she does. Sheās always working, finding new sellers, and even knocking on doors to see if people are open to selling. We would get 7:30am text messages from her every day with new listings (because of her network, 90% of the homes we looked at we were the first buyers to get access to the house, giving us an incredible competitive advantage and speed to market), she is a strong negotiator, and very direct when she needs to be. While we looked at many houses, we always had our eyes on this one house that wasnāt on the market, but we just loved. Diane knew the owners and contacted them. They ideally wanted to move south of Montauk, so if Diane could find them their dream house, they would be open to selling. Long story short Diane got us inside the house, we made an offer and Diane was able to find them a great house in Bay Shore. We closed the deal and were the only people to ever see the house and it never hit the market. So, I know If I wasnāt fortunate enough to find her we would have never found our home. We have been here for two months and love our home. I highly recommend Diane. She gave us a competitive advantage that helped us find our dream home, during a sellers market with low low low inventory. I know we would still be looking if it wasnāt for choosing her. -Ashley
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As a 1st time seller, Diane was understanding and patient with all my questions and made sure I understood my choices and responsibilities during the process. She was caring of the emotional needs that went along with selling my home of 32 years. Diane made me feel confident and comfortable with my decision. Diane can be trusted to have your best interest in mind. -Jim
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Diane is excellent At her job, We were buying a house for the first time and she helped us a lot from the beginning to the end. She is always there to answer all of your questions. She is so patient and makes sure you understand what is happening during the process. She is a professional. We highly recommend Diane. We are so happy and grateful that Diane helps us find our Beautiful House. :)- Isabella
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Diane was a true professional. I searched for a home for a long time and dealt with many different personalities. Diane was personable, knowledgeable, and well connected with other professionals that are necessary while selling your home. We used her attorney and mortgage lender recommendation. Everyone was responsive, professional, and had all of the answers I needed to make informed decisions. I would definitely recommend her to anyone in need of a realtor and would gladly use her again. -Vanessa
Diane Betzās Listings
1/49
$2,850,000
- 8
- Bedrooms
- 7
- Bathrooms
- 7,526
- Square Feet
- 0.8
- Acres
1/18
$879,000
- 3
- Bedrooms
- 2
- Bathrooms
- 1,800
- Square Feet
- 0.5
- Acres
1/12
Diane Betzās Transactions
Past Sales
$2,850,000
- 5
- Bedrooms
42 Magoun Rd
West Islip
Listing Courtesy of Eric G Ramsay Jr Assoc LLC, Diane Betz
Listing Courtesy of Eric G Ramsay Jr Assoc LLC, Eric G. Ramsay III
Listing Courtesy of BERKSHIRE HATHAWAY, Michael Pesce; BERKSHIRE HATHAWAY, Ronald Lanzillotta
Listing Courtesy of Marylou Swan Realty Corp, Lori E. Milana
Listing Courtesy of Douglas Elliman Real Estate, Laura Riportella
Listing Courtesy of Eric G Ramsay Jr Assoc LLC, Diane Betz
Listing Courtesy of Eric G Ramsay Jr Assoc LLC, Diane Betz; Eric G Ramsay Jr Assoc LLC, Eric G. Ramsay III
$1,475,000
- 3
- Bedrooms
- 4
- Bathrooms
- 3,564
- Square Feet
- 0.46
- Acres
Listing Courtesy of Eric G Ramsay Jr Assoc LLC, Diane Betz
Listing Courtesy of Eric G Ramsay Jr Assoc LLC, Diane Betz; Eric G Ramsay Jr Assoc LLC, Eric G. Ramsay III
Listing Courtesy of Eric G Ramsay Jr Assoc LLC, Diane Betz
Listing Courtesy of Eric G Ramsay Jr Assoc LLC, Diane Betz
Past Rentals
Listing Courtesy of Eric G Ramsay Jr Assoc LLC, Diane Betz
Listing Courtesy of Eric G Ramsay Jr Assoc LLC, Diane Betz
Listing Courtesy of Eric G Ramsay Jr Assoc LLC, Diane Betz
Listing Courtesy of Kennedy L I Realty, Doris M. Kennedy
Listing Courtesy of Keller Williams Realty Elite, Rina Brooke; Keller Williams Realty Elite, Debra Ienna
Listing Courtesy of Eric G Ramsay Jr Assoc LLC, Diane Betz
Listing Courtesy of Eric G Ramsay Jr Assoc LLC, Diane Betz
Listing Courtesy of Eric G Ramsay Jr Assoc LLC, Diane Betz
Listing Courtesy of Eric G Ramsay Jr Assoc LLC, Diane Betz
Listing Courtesy of Eric G Ramsay Jr Assoc LLC, Diane Betz
