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.
| MLS # | 1673223 |
|---|---|
| Listing Type | For Sale |
| Style | House |
| HOA Dues | $725 |
| Sub-Type | Resale |
| Status | Active |
| Year | 1997 |
| Days On Site | 35 |
| Listing Provided By | Town & Shore Real Estate | Sandra Johnson |
| Bed(s) | 2 |
|---|---|
| Bath(s) | 1 Total |
| SQ Feet | 1,039 |
| Zoning | residential |
| Acreage | 2.93 |
| Water Front | Casco Bay |
| Property View | Scenic, Trees, Woods |
| Interior Features | 1st Floor Bedroom, Other, Shower, Storage, Primary Bedroom w/Bath |
|---|---|
| Heating Yes / No | Yes |
| Cooling Yes / No | Yes |
| Cooling | Heat Pump |
| Fireplaces Total | 1 |
| Fireplace Yes / No | Yes |
| Laundry Features | Main Level |
| Rooms Total | 7 |
| Amenities Co Amenities | 1st Floor Bedroom, Main Level, Other Amenities, Shower, Storage, Primary Bedroom w/Bath |
| Roof | Metal |
|---|---|
| Lot Features | Abuts Conservation, Historic District, Rural, Rolling Slope, Wooded |
| Waterfront Features | Beach Rights, Common, Oceanfront, Waterfront Tidal |
| View | Scenic, Trees/Woods |
| Construction Materials | Masonry, Wood Frame, Shingle Siding |
| Patio And Porch Features | Deck |
| Attached Garage Yes / No | No |
|---|---|
| Garage Yes / No | No |
| Parking Features | Gravel, None |
| Sewer | Private Sewer |
|---|---|
| Electric | Circuit Breakers |
| Tax Annual Amount | 16146 |
|---|---|
| Tax Book Number | 14189 |
| Tax Year | 2025 |
| Tax Block | A |
| Tax Lot | 18 |
| Tax Map Number | 83E |
| State | ME |
|---|---|
| County | Cumberland |
| City | Portland |
| Zip Code | 04109 |
| Area | Cumberland |
| Community Name | Diamond Cove Homeowners Association |
| Listing VS Median (in Diamond Cove Homeowners Association) | |
Price: $2,100,000 low | high Med: $2,100,000 sqft: 1,039 low | high Med: 1,039 $ / sqft: $2,021 low | high Med: $2,021 On site: 35 low | high Med: 35 | |
| State | ME |
|---|---|
| County | Cumberland |
| City | Portland |
| Zip Code | 04109 |
| Area | Cumberland |
| Community Name | Diamond Cove Homeowners Association |
| Listing VS Median (in Diamond Cove Homeowners Association) | |
Price: $2,100,000 low | high Med: $2,100,000 sqft: 1,039 low | high Med: 1,039 $ / sqft: $2,021 low | high Med: $2,021 On site: 35 low | high Med: 35 | |