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Meet Onyx Realty Group: Excellence, Integrity & Personalized Service
Co-founded by Ellen Dunn and Caroline Harris, Onyx Realty Group is built on a foundation of expertise, dedication, and a passion for helping clients navigate the real estate market with confidence.
A DFW native, Ellen attended Ursuline Academy in Dallas before earning both her undergraduate degree in business and an MBA in finance from the University of North Texas. Before real estate, she gained invaluable experience in mortgage lending, underwriting, and commercial lending. After 17 years dedicated to raising her sons, she pursued her passion for real estate in 2017, quickly establishing a reputation for seamless transactions, high ethical standards, and client-focused service.
Caroline’s journey into real estate began with a bachelor’s degree in business administration and accounting from the University of Oklahoma, where she also fulfilled her dream of becoming a collegiate cheerleader. After successfully founding and running a tumbling and cheerleading business in Amarillo, she transitioned into real estate in 2013. Her entrepreneurial drive quickly made her a top producer, and in 2020, after moving to DFW, she co-founded Onyx Realty Group to expand her business in the competitive metroplex market.
Ellen and Caroline’s combined expertise in finance, business, and real estate, paired with their strong work ethic and commitment to excellence, allows Onyx Realty Group to provide personalized, high-touch service tailored to each client’s needs. Supported by a stellar administrative team, they ensure every transaction is smooth and stress-free.
Beyond real estate, Ellen and Caroline are deeply rooted in their families and communities. Ellen is the proud mother of Sam and Thomas, while Caroline and her husband, Vincent Matteson, a custom home builder, raise their two sons, Hank and Sawyer. Their client-first approach, passion for helping others, and commitment to honest, open communication set them apart in a competitive market.
At Onyx Realty Group, real estate isn’t just about buying and selling—it’s about relationships, trust, and delivering exceptional results. Whether you’re searching for your dream home or selling with strategy, Ellen and Caroline are here to guide you every step of the way.
Hear What Our Clients Have To Say ~
★★★★
"Caroline Harris, our realtor, was exceptional! Caroline guided us through the whole home buying experience. She made this whole process super easy for us. We all know how crazy the Dallas housing market is! All I can say is that we were able to get the first house we made an offer and closed the whole deal in less than a month! I truly believe we were able to do this thanks to Caroline's advice and guidance. I have no reservations in recommending Caroline and her team to anyone....trust me....you won't be disappointed!"
★★★★★
"Let's see, where can I begin? Ellen was terrific as a realtor for us. When we first met her, we weren't too sure about our timeline for putting the house on the market, yet we had a clear idea of what we wanted to upgrade to. Not only did she give us great advice on staging our old home, she also helped us to find the perfect place we were looking for. She was always personable and honest whenever we had questions or concerns and never once did I feel like she was just doing this "for the money". I highly recommend her to anyone who is in the market for a new home. I only wish that we were still in the market so we could continue to communicate with her on a regular basis! Fortunately, our new home is exactly what we were looking for, and we couldn't have found it without her! If anyone needs a hardworking and committed realtor, Ellen is the one to go to!"
★★★★★
"Caroline [and her team, thank you Sarah and Mel!] are the epitome of A-Z real estate service. She is incredibly knowledgeable about all things real estate and is meticulous with every step of the process. Buying a house with Caroline has been a great experience and she will go to bat for you every step of the way. I cannot thank her or her team enough for all of the help and I recommend her for all of your home buying and selling needs. Thank you, Caroline!!"
★★★★★
"I hand selected Ellen to help sell my house, because I knew the type of person she is. She is hardworking and fun to work with. She had my house on the market and sold within a couple of days, and for more than the asking price!!! She made going through closing very easy as I was out of town a lot. She was at my house for home repairs when I couldn’t be and kept me in the loop the whole time. I would 100% choose Ellen to help buy and sell my next home."
★★★★★
"I was in the process of moving from Colorado to Texas. I found a house online and had my family look at it. I immediately contacted Caroline and started the offer process. Caroline was incredibly informative and supportive during the whole process up until and even after closing. She was amazing during the whole process. I felt so comfortable asking as many questions as I needed to feel comfortable with the purchase. Caroline always answered my questions right away and was always available! I highly recommend Caroline if you want a realtor that makes you feel as if you are her top priority!"
★★★★★
"I met Ellen at an open house. She became my realtor because from the very beginning she would go above and beyond for a potential customer. She hung with me through house after house until we found what I was looking for. She treated me like family and made sure I didn’t make any home owning mistakes she could prevent. She remains a good friend today, and I will always ask her first in any real estate venture."
"Caroline was just awesome! She kept us informed and was very prompt in her responses. Her responsiveness didn't stop even after the transaction closed and we needed help with contractor referrals. An awesome lady to work with!!!"
★★★★★
"Ellen is the best!! She will go above and beyond to make sure you find exactly what you are looking for and she makes things happen!! Excellent realtor with perseverance and professionalism that’s so rare these days! I 1,000% believe she can and will get you the house you want and sell your house with the greatest of ease!! If you are looking for a reliable and persistent Realtor, I highly recommend Ellen, you will not find better!! A+++ (5 stars)"
★★★★★
"I recently had the pleasure of working with Caroline as my realtor, and I cannot express how grateful I am for the outstanding service she provided throughout the entire home buying process. Her expertise, responsiveness, and attention to detail made a stressful time in my life transform into an enjoyable home buying experience."
★★★★★
"Ellen is a great agent to work with. She is trustworthy, kind, and great at communicating. Working with Ellen is always a pleasure."
Team Agents
Onyx Realty Group’s Listings
