About Marsha

Marsha DeCosta is a top-producing Real Estate Agent and lifelong resident of the Boothbay and Wiscasset areas, offering clients deep local insight and proven results across Midcoast Maine. Since joining Tim Dunham Realty in 2017, she has built her business on the core values of trust, loyalty, and integrity—earning her a sterling reputation throughout the region.

 

Over the past several years, Marsha has helped hundreds of families successfully buy or sell their homes, with total career sales exceeding $83 million. Her commitment to exceptional service is reflected in more than 150 five-star reviews, which consistently highlight her attention to detail, strong communication skills, and genuine care for every client she serves.

 

Marsha’s professionalism and dedication have earned her multiple honors, including the 2021 President’s Award from Tim Dunham Realty and recognition as the 2024 Lincoln County Council REALTOR® of the Year. She has proudly served her profession as Treasurer/Secretary for both the Lincoln County Council and the Mountains to Shore Board of REALTORS® (MSBOR), as well as a Director for the Maine Association of Realtors (MAR). In addition, she holds the prestigious Accredited Buyer’s Representative (ABR®) designation.

 

With a trusted network of industry experts—including photographers, stagers, lenders, inspectors, and title professionals—Marsha ensures every transaction is handled with precision and care from start to finish.

 

Whether you’re buying your first home, searching for a coastal retreat, or ready to list your property, Marsha DeCosta is a knowledgeable, dedicated, and highly respected Real Estate Agent who makes every client’s real estate experience seamless, informed, and rewarding.