Your Full Service Real Estate Provider
A Charleston native, Robertson loves the Lowcountry and everything this one-of-a-kind city has to offer. He currently lives with his wife and two sons in the town of Mount Pleasant.
Robertson graduated from Clemson University with a marketing degree and has worked in the Charleston real estate market since 2002. In that short period, Robertson has become an annual multi-million dollar producer and a multiple year recipient of the Realtor of Distinction - Executive Circle award .
In the Spring of 2006 Robertson partnered with Jimmy Dye to form The Cassina Group, LLC and the company is now one of the areas leaders in residential home sales.
He works tirelessly to find the "right addresses" for his clients to ensure that they will love Charleston as much as he does.
Robertson has closed over 175 million dollars in his career in real estate and since 2011 ranks in the TOP 5 for homes sold over 2 million dollars and TOP 10 for homes sold over 1 million. Robertson takes great pride in assisting clients who are searching for Charleston's most exclusive properties.
"Robertson was incredibly helpful while we were looking for a house on Sullivan's Island. It can be very stressful and frustrating buying a house from afar and Robertson always kept us apprised of the situation/negotiations during the entire process. We were completely satisfied with our relationship with The Cassina Group and we feel that Robertson is not just our realtor, but a friend." --Nick Steinsbeger
"We have purchased four properties and sold three in the Old Village of Mount Pleasant with the assistance of Robertson Allen and the team at the Cassina Group since 2008. If you smartly or luckily choose Robertson Allen you get an impressive team package. Robertson is knowledgeable, kind, intelligent and a wonderful listener. He will assist you with buying, selling or just gaining real estate knowledge. He will never push you and will always keep your best interests in mind. He is always available and a great communicator. If he doesn't know an answer he will get you the correct answer. But most of all, with Robertson Allen you acquire a friend! We think so much of Robertson and his credibility that we actually bought our current home in April of 2016 without even physically seeing it. He looked. He knew the house. He knows us. We just trusted him and we couldn't be happier." -- Tim & Lindsi Eisenhauer
"My husband and I hired The Cassina Group ?to help us sell our home in downtown Charleston after having trouble with it on the market previously. From the moment I spoke with Robertson on the phone I knew that he and The Cassina Group were an amazing match for us. Robertson was consistently highly motivated, knowledgeable, professional, and communicative - all qualities I required in a broker. It was clear that he and his team worked daily to get our house sold and kept me in the loop at all times. We were not living in Charleston at the time, and I always felt that I could get in touch with Robertson or his amazing assistants whenever I had a question. The Cassina Group is the best real estate group in Charleston, hands down. I would recommend them to anyone, anytime.”--Jordan Moore
"Moving from the North Shore of Chicago to “South of Broad” on the Charleston Peninsula is 2015 was an exciting but somewhat intimidating adventure, and we are exceedingly grateful to Robertson Allen for helping us to successfully navigate all of the challenges involved. He understood our needs: 3,000 square foot home with room for two young teenage girls...PLUS room for two older children visiting from college...PLUS space for a home office...AND, most importantly, accommodations for a rescue dog! Robertson understood our desires: privacy, proximity to and views of the water, and walking distance to our younger girls’ school and restaurants. Living almost 1,000 miles away at the time, we place our long-distance trust in Robertson to only “ring the bell” when he believed that he had found for us the perfect match. When he rang, Dianna flew in and out--and advised Jim that evening to submit an offer (sight unseen) on the property she and Robertson had explored. The rest, as they say, is history. We are approaching our two-year residency in Charleston and we love our home! It easily weathered South Carolina’s 1,000 Year Floor and Hurricane Matthew. Needless to say, we value Robertson’s knowledge, expertise, and professionalism. As two former attorneys and current investment advisers, we believe that--with respect to Robertson--our trust was extremely well-placed. As a postscript, we would like to add that Robertson was instrumental in connecting us with Cortney Bishop Design for our interior design and Glen Gardner for our landscape design (both Charleston Magazine, August 2016).--James and Dianna Goldman
"Earlier this month I used Robertson Allen with The Cassina Group to list and sell my home. They not only made the process completely painless and smooth, they also helped me sell it in record time with their great marketing strategy! My home was under contract in 5 days after listing and I even received a back-up offer shortly thereafter. I cannot recommend The Cassina Group enough. For anyone looking to buy or sell in Charleston (or the surrounding areas), use The Cassina Group!" - Dotty Strobel
"We highly recommend Robertson Allen to help you find a house you will love. We were very impressed with how hard-working he is; before we could ask him to do something, we would learn that he had already done it! Our search certainly had its ups and downs, with a sometimes difficult seller, but Robertson was with us every step of the way. Thanks to Robertson and his staff for helping us find the perfect vacation home and seeing us through some unexpected turns along the way!" - Anonymous
Awards & Designations
Broker in Charge
Realtor of Distinction - Executive Circle
Executive Leadership Council for American Heart Association
Board of Trustees - Historic Charleston Foundation
Past Leadership Committee Member of Operation Home
Member of Country Club of Charleston
Member of Carolina Yacht Club