Who We Are

We are Atlantic Brokerage, a full service, privately owned real estate firm serving Cape Cod and Nantucket Island. The firm was originally established in 2008 under the name Chatham Properties Group and in 2022 affiliated with Christie’s International Real Estate to become Christie’s International Real Estate Atlantic Brokerage.
We are the exclusive affiliate for the towns of Provincetown, Truro, Wellfleet, Eastham, Orleans, Brewster, Chatham, and Harwich on Cape Cod, as well as Nantucket Island.

Atlantic Brokerage is led by Doug Grattan, an experienced Broker that now serves as President and Director of Sales. Under Doug’s leadership, the Company has sold over $500 million in real estate since its inception. This success is attributed to the proven track record we have in providing top notch customer service to our clients and the properties we represent. Our attention to detail is unsurpassed. A winning combination of strong local knowledge with the national and international presence of Christie’s International Realty allows us to give exemplary service to all our clients.

​​​​​​​Assisting our Sales Team is a group of dedicated and experienced professionals that specialize in marketing properties in the region. We take pride in representing our listings to the highest of standards and enjoy the process of working with clients, taking them from start to the finish line when the keys are passed to the new owners.

​​​​​​​Whether you are looking to buy or sell a modest cottage or a large estate, we give the same level of service and attention to all our clients. Each year we continue to drive the market, making us one of the most successful real estate companies on the Cape. Contact us to see how we can assist you.

Our Offices

170 Commercial Street
Provincetown, MA 02657

(508) 413-6000


720 Main Street
Chatham, MA 02633

(508) 945-6000


584 Route 28
Harwich Port, MA 02646

(508) 432-6000


7 Bayberry Ct
Nantucket, MA 02554

(508) 228-6000

Work With Us

We pride ourselves in providing personalized solutions that bring our clients closer to their dream properties and enhance their long-term wealth.