A truly rare offering on Great Diamond Island, 218 West Shore Drive is a year-round waterfront property where Maine island living, extraordinary history, and unforgettable sunset views converge. Part of historic Fort McKinley, a coastal defense installation constructed between 1890 and 1910 to protect Portland Harbor, the property occupies a commanding waterfront position with sweeping views toward the Portland skyline. Set on almost 3 acres with 266 feet of water frontage, and including an approved buildable house lot, it offers a meaningful connection to both the island's storied past and the surrounding seascape. The charming cottage is attached to an original mining casemate and features an inviting living area opening to a waterside patio, two bedrooms, and one bath, with the primary bedroom located within the original casemate. Additional historic structures include a renovated second bunker, currently used as a den/office and a workshop with potential for a third bedroom, as well as a rangefinder station and gun battery. Tucked along a private cove with beautiful westerly sunset views, this one-of-a-kind property offers privacy, character, and a remarkable connection to the sea. As part of the Diamond Cove Association, residents enjoy amenities including a pool, tennis and pickleball courts, a bowling alley, and a basketball court. Accessible by ferry or private boat, Great Diamond Island also offers a marina, an inn, and restaurants, creating an exceptional opportunity for year-round island living just minutes from Portland.
Welcome to 127 Valley Avenue on beautiful Great Diamond Island, a private and peaceful retreat in the heart of Casco Bay. Set on a landscaped 0.28-acre wooded lot, this fully furnished, move-in ready home offers the perfect blend of modern updates and island charm, just a scenic 20-minute ferry ride from Portland. This thoughtfully remodeled 1,267-square-foot home features 2 bedrooms, 2 full bathrooms, a dedicated office, and a versatile bonus room. The updated kitchen showcases granite countertops, all new appliances, and a built-in bar complete with a mini fridge and keg refrigerator, creating an ideal space for entertaining. Enjoy the changing seasons from the enclosed wraparound porch, or cozy up by the propane fireplace on cooler evenings. Extensive improvements include five newly installed heat pumps, upgraded insulation, a new well, a new septic system, and thoughtful storage enhancements. Outside, enjoy beautifully maintained gardens, a self-watering vegetable garden, outdoor shower, hot tub, and additional storage building--perfect for embracing the relaxed island lifestyle. Great Diamond Island offers tranquil beaches, scenic walking paths, two island restaurants, and a relaxed coastal lifestyle just minutes from Portland's shopping, dining, airport, and rail service. Whether you're seeking a seasonal getaway or a nearly year-round island residence, this turnkey property offers an exceptional opportunity to enjoy the best of Maine island living.


Portland is located in Maine. Portland, Maine 04109has a population of 68,063. Portland 04109 is less family-centric than the surrounding county with 17.44% of the households containing married families with children. The county average for households married with children is 30.7%.
The median household income in Portland, Maine 04109 is $66,109. The median household income for the surrounding county is $80,679 compared to the national median of $69,021. The median age of people living in Portland 04109 is 36.9 years.
The average high temperature in July is 78.8 degrees, with an average low temperature in January of 10.8 degrees. The average rainfall is approximately 48.9 inches per year, with 61 inches of snow per year.