$2,100,000
 $11,273 est/mo Sourced by Back At You

218 West Shore Drive,Portland, ME 04109

Portland, ME 04109

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Description

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.

Details

MLS #1673223
Listing TypeFor Sale
StyleHouse
HOA Dues$725
Sub-TypeResale
StatusActive
Year1997
Days On Site35
Listing Provided ByTown & Shore Real Estate | Sandra Johnson

Features

Bed(s)2
Bath(s) 1 Total
SQ Feet1,039
Zoningresidential
Acreage2.93
Water FrontCasco Bay
Property ViewScenic, Trees, Woods

Interior

Interior Features1st Floor Bedroom, Other, Shower, Storage, Primary Bedroom w/Bath
Heating Yes / NoYes
Cooling Yes / NoYes
CoolingHeat Pump
Fireplaces Total1
Fireplace Yes / NoYes
Laundry FeaturesMain Level
Rooms Total7
Amenities Co Amenities1st Floor Bedroom, Main Level, Other Amenities, Shower, Storage, Primary Bedroom w/Bath

Exterior

RoofMetal
Lot FeaturesAbuts Conservation, Historic District, Rural, Rolling Slope, Wooded
Waterfront FeaturesBeach Rights, Common, Oceanfront, Waterfront Tidal
ViewScenic, Trees/Woods
Construction MaterialsMasonry, Wood Frame, Shingle Siding
Patio And Porch FeaturesDeck

Parking

Attached Garage Yes / NoNo
Garage Yes / NoNo
Parking FeaturesGravel, None

Utilities

SewerPrivate Sewer
ElectricCircuit Breakers

Taxes

Tax Annual Amount16146
Tax Book Number14189
Tax Year2025
Tax BlockA
Tax Lot18
Tax Map Number83E

Area Information

StateME
CountyCumberland
CityPortland
Zip Code04109
AreaCumberland
Community NameDiamond Cove Homeowners Association
Listing VS Median (in Diamond Cove Homeowners Association)
Price:
$2,100,000
low | high
Med:
$2,100,000
50% of Average
sqft:
1,039
low | high
Med:
1,039
50% of Average
$ / sqft:
$2,021
low | high
Med:
$2,021
50% of Average
On site:
35
low | high
Med:
35
100% of Average
Sourced by Back At You

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Listing data is derived in whole or in part from the Maine IDX and is for consumers' personal, noncommercial use only. Dimensions are approximate and not guaranteed. All data should be independently verified. © 2026 Maine Real Estate Information System, Inc. All Rights Reserved.

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Learn More About This Property

StateME
CountyCumberland
CityPortland
Zip Code04109
AreaCumberland
Community NameDiamond Cove Homeowners Association
Listing VS Median (in Diamond Cove Homeowners Association)
Price:
$2,100,000
low | high
Med:
$2,100,000
50% of Average
sqft:
1,039
low | high
Med:
1,039
50% of Average
$ / sqft:
$2,021
low | high
Med:
$2,021
50% of Average
On site:
35
low | high
Med:
35
100% of Average
Sourced by Back At You
Listing Updated: July 31, 2026 at 2:20:20 PM PDT
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