Sean Gildea, Sales Manager
sean.gildea@saganharborsidesir.com
781.775.5785
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Sean Gildea has lived his entire life in Marblehead. His Marblehead roots date back 13 generations to his grandfather, Isaac Allerton, the Mayflower Pilgrim that started the fishing industry in Marblehead in 1629.
Real Estate has been a constant in Sean’s life. His parents owned Carlson Real Estate, one of the largest real estate companies in New England. He received his education at Marblehead and Belmont Hill School. Upon graduating from the University of Maine-Orono with a BS degree in Business Administration, he immediately began his real estate career. Sean holds a Broker’s License, is a top producer in sales, and is the Sales Manager for Sagan Harborside Sotheby’s International Realty. He is known as a leader in the marketplace with a reputation for fairness and integrity.
Sean is part of the CARLSON GROUP, a sales team of three generations of family members. Their motto is “LET OUR FAMILY HELP YOUR FAMILY WITH YOUR REAL ESTATE NEEDS!”
CARLSON GROUP was proud to be recognized in 2025 by RealTrends as one of the top 1.5% of America’s Real Estate Professionals.
Sean, Jodi and their two children, Liam and Ella, maintain active lives. They have all skied Sugarloaf Mountain in Maine for many years. You may have seen Sean in a hot yoga class, biking around town, on the harbor kayaking or standup paddleboarding with his dogs—Hazel and Lulu. Sean is a member of the Dolphin Yacht Club and Marblehead Neck Association.
Jodi and Sean often work together in sales servicing the entire North Shore. They were voted #1 Best Real Estate Agents by 2021 Reader’s Choice Awards—North of Boston.
Testimonials
“Sean was patient, passionate and very responsive while we secured our dream house at the ocean. He was very skilled in structuring the offers so we would stand out in this very competitive market without having to pay a crazy premium. Best experience I had out of 11 house buying processes during the last 40 years.”
-Gaby & Chris
“I have worked with Sean on multiple transactions now—finding multiple tenants, helping convert a multi-family to condominiums and selling two condominiums. Sean is awesome.
Sean is 100% trustworthy. He was always upfront with us and did exactly what he said he would do.
Sean went above and beyond more times than I can count. He helped with some VERY difficult tenants and then helped us through a very complicated sales process.
Sean knows real estate. He always knows someone who can help. And he helped us sell to good buyers at good prices.
We slept better throughout the process knowing that Sean was there to help. He ultimately helped us buy our dream home. We highly recommend him.” —Happy Client