Your Full Service Real Estate Provider
A Charleston native, Robertson loves the Lowcountry and everything this one-of-a-kind city has to offer.
Robertson graduated from Clemson University and has worked in the Charleston real estate market since 2002. In 2006, Robertson formed The Cassina Group with his business partner, and the company consistently ranks as the #1 boutique firm in Charleston, SC.
Over the course of his career, Robertson has become an annual multi-million dollar producer and a multiple year recipient of the Realtor of Distinction - Executive Circle award. He specializes in luxury properties in historic downtown Charleston, Mount Pleasant, Sullivan’s Island, Isle of Palms, and other areas of the Lowcountry, while always delivering the strongest results for both his buyer and seller clients. Robertson has the distinct honor of being Charleston’s only member of REALM™, a collection of the most accomplished real estate professionals in the world allowing him to leverage the power of their global network to match qualified clients and buyers.
Robertson takes a creative, solutions-driven approach to finding the perfect match for his clients and works tirelessly to find the "right addresses" to ensure that they will love Charleston as much as he does. He currently lives with his wife and two sons in the city of Charleston and enjoys boating, fishing, playing golf, and exploring the city’s culinary scene. He is also actively involved in the community, serving on boards for Charleston Day School, Historic Charleston Foundation and First Citizens Bank, as well as a supporter of Good Friends of the Lowcountry and the American Heart Association.
Some of Robertson's recent real estate honors include:
• #1 agent in Charleston MLS for overall sales (2021)
• #2 agent in MLS for sales on Sullivan's Island (2022)
• #3 agent in MLS for sales in historic downtown Charleston (2022)
• Top 5 agent in MLS for overall sales (since 2010)
• Top 5 agent in MLS (since 2010) for the following luxury categories: $1,000,000, $2,000,000, $3,000,000, $4,000,000, $5,000,000 & $6,000,000
18 Broad St Unit 801, Downtown - $12,000,000
147 Flyway Drive, Kiawah Island - $11,650,000
2529 Atlantic Avenue, Sullivan's Island - $9,075,000
27 Lamboll Street, South of Broad - $7,360,000
2411 Atlantic Avenue, Sullivan's Island - $6,850,00
116 Ocean Boulevard, Isle of Palms - $6,800,000
12 Church Street, South of Broad - $6,000,000
910 Middle Street, Sullivan's Island - $5,775,000
2308 Myrtle Avenue, Sullivan's Island - $5,500,000
7 Sayle Road, The Crescent - $5,025,000
17 Legare St, South of Broad - $5,000,000
Check out Robertson on the podcast, Brokering Billions (June 2022)
LEARN MORE ABOUT ROBERTSON
FAVORITE STREET IN CHARLESTON Lower Meeting Street. Some of the best memories I have as a child involve visiting my great grandfather at his house at 15 Meeting. So much of Charleston's history and my childhood was spent on this street.
FAVORITE RESTAURANT IN CHARLESTON The Ordinary - Mike Lata is not only a client of mine but hands down one of the best chefs in the country.
FAVORITE ACTIVITY OUTSIDE OF WORK Spending time with my family. My wife and two sons love the outdoors and we try our best to enjoy everything the Charleston area has to offer. Boating, fishing and water sports are some of our favorites.
FAVORITE LOCAL PRODUCT John's Island Heirloom tomatoes. So many incredible dishes are made in the Allen home with these amazing fruits.
FAVORITE ANNUAL EVENT Wine + Food Festival. This event has grown so much over the years and the number of famous chefs that participate each year is amazing.
MUST-SEE SPOT IN CHARLESTON High Battery/White Point Gardens. Taking a walk or run around the High Battery is something we as residents take for granted. You can see so many historical sites including Fort Sumter, Morris Island, Castle Pinkney, Sullivan's Island (Fort Moultrie), to name a few. You are literally taking in a panoramic view of the birth of our Nation.
PRAISE FOR ROBERTSON
"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....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
"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.”--Jordan Moore
"[W]e 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."--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." - Dotty Strobel
"We were very impressed with how hard-working [Robertson] is; before we could ask him to do something, we would learn that he had already done it!" - Anonymous
"During the very involved sales process of my Mother’s family home on Queen St, time and again, I was grateful to be successfully represented by Robertson Allen and The Cassina Group. Robertson is an expert who knows, a professional who performs and a fine man of integrity you can trust." - Sloan Wright
"Working with Robertson Allen was an absolute pleasure. As the listing agent for my penthouse, Robertson was driven, professional and fun (yes, fun) to work with! Our relationship continues. I gave him a “wish list” for my future home. He called one morning to announce “I’ve found it”, and indeed he had!" --T-Mouse Henning
"Amazing experience all around. Easy transaction and very professional. Found us a perfect house before it ever hit the market!" --Sarah Hamlin Hastings
"When I called Robertson Allen. at The Cassina Group to ask about the value of my home and the possibility of selling it, he could not have been more responsive and helpful. His advice on what to do to get the house ready as well as his knowledge of perspective buyers was amazing. Every buyer that looked at the house, Except for one, was brought over by the Cassina Group, who eventually sold it for a very good price in a short period of time. Since these were out of town clients, Robertson was amazing at handling all of the intricate details involved with the closing and inspection, etc. Becca, Robertson ‘s assistant, was also extremely helpful. I couldn’t have been happier with the service of The Cassina Group and would definitely use them again and recommend them to anyone." --Sally Rhett
"Robertson and his staff are simply the best. He has represented us as a seller twice and worked miracles. Great experience working with him." --Kim Skaggs
"Robertson Allen was a fantastic agent and helped us find exactly the home our family was looking for. His knowledge of the Charleston area and the local real estate market helped us get into our home quickly in a tight market. Thanks Robertson!" --Jack Tobias
"Robertson was the absolute best to work with. I told him what we were looking for and he showed us one house and we were done! That's some excellent service! Knowing your clients and delivering is a true talent. I would recommend him to anyone." --Margaret Ann Siachos
"Phenomenal experience--start to finish!" --Laura Grindrod
"We loved working with Cassina Group to buy our first home. Robertson was so helpful and knowledgeable throughout the process. If we ever move, we know Cassina will be our best resource as both a buyer and seller." --Lauren duPont
"This is the second time I have worked with Robertson and Cassina. They are amazing! Can't imagine buying or selling a home in the Charleston area and not have them involved. First class." --Randy Johnson
"We were pleased with the efforts and expertise of the Cassina Group. Robertson Allen is a top notch agent, and his assistants were excellent." --Thomas Barron
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
Charleston Day School Board
Member of Country Club of Charleston
Member of Carolina Yacht Club