Colleen Sullivan

With over 30 years of experience and more than 700 successful transactions, Colleen Sullivan is a trusted name in Hilton Head Island real estate. As the founding partner of Colleen Sullivan & Associates, Colleen leads a top-performing team known for delivering exceptional service, local expertise, and outstanding results in the luxury and resort markets.

Since joining Keller Williams of the Lowcountry in 2020, Colleen has consistently ranked as the #1 Individual Agent in Gross Commission Income (GCI) for three consecutive years. She was named the #8 Top Individual Sales Agent in the Carolinas Region in 2021 and the #7 Top Individual Sales Agent across both North and South Carolina in 2022. Her dedication has earned her repeated recognition as Realtor of the Month and the Distinguished Sales Award from the Hilton Head Area Association of Realtors.

Colleen holds the Keller Williams Luxury International designation and is a proud member of the Hilton Head Bluffton Chamber of Commerce, Hilton Head Area Association of Realtors, Multiple Listing Service of Hilton Head Island, and the National Association of Realtors.

Originally from Clinton, NY, Colleen first discovered Hilton Head Island in 1989 and immediately purchased property. What began as a passion for real estate and summer visits evolved into a full-time move in 2000 and the launch of her real estate career in 2001. Her love for the Lowcountry lifestyle — from biking and beach walks to Lowcountry dining and home renovation — is something she shares with every client.

At Colleen Sullivan & Associates, our mission is to help clients achieve their real estate goals with white-glove service and proven results. Whether you're buying your first villa, selling a luxury estate, or searching for the perfect homesite to build your dream home, our team is here to guide you every step of the way. Much of our success is built on long-term relationships and referrals from satisfied clients.

Colleen’s reputation for attentive service, skilled negotiation, and strategic marketing is matched by her genuine care for each client. She and her husband, architect Bob Johnson of Johnson & Associates Architects, live on Hilton Head Island and enjoy renovating homes together.