255 Diamond Avenue, Portland, ME 04109 (MLS # 1683661)

Save to Favorites
Print
Share
PRICE $1,250,000 dsIDX morgage calculator
SIZE 1,500 sqft
LOT SIZE 1,307 sqft

A distinctive opportunity to acquire an established seasonal business on Great Diamond Island. Located on Diamond Cove within the Fort McKinley Historic District, Crown Jewel has been a treasured Casco Bay destination since opening in 2018, earning national recognition from The Wall Street Journal, The Boston Globe, Condé Nast Traveler, and other notable publications. Serving creative cocktails and a unique menu to islanders, boaters, and visitors throughout the summer season, the fully remodeled restaurant and bar accommodates lunch and dinner service, takeout, private events, and catered meals. At the back of the restaurant, a charming retail area pays homage to the building's original use as a general store, with coffee, baked goods, candy, clothing, cocktails to go, and other daily provisions. A wraparound deck provides outdoor seating for eight and a drink rail for waiting guests, while the intimate dining room accommodates 30, with additional seating at the bar and chef's counter. The open-concept layout includes a full bar and well-equipped kitchen with a six-burner gas stove, grill, fryer, oven, two refrigerators, and a large freezer. A separate back kitchen provides efficient food preparation and dishwashing areas with ample overhead storage. All furnishings, barware, lighting, equipment, and serving ware convey with the sale, along with a golf cart used to transport goods from the ferry to the restaurant. With an established presence in Diamond Cove and the infrastructure in place for continued operation, Crown Jewel presents the opportunity to carry forward a successful seasonal business or bring a new concept to this unique island setting.

LAST UPDATED 10/8/2026 TRACT McKinley Partners Limited Partnership
YEAR BUILT 1850 COMMUNITY McKinley Partners Limited Partnership
COUNTY Cumberland STATUS Active
PROPERTY TYPE(S) Commercial


ADDITIONAL DETAILS
AIR Heat Pump, Wall Unit(s)
AIR CONDITIONING Yes
BASEMENT None
CONSTRUCTION Brick, Stone
HEAT Electric, Heat Pump
HOA DUES 2000
INTERIOR Storage
LOT 1307 sq ft
LOT DESCRIPTION Other
LOT DIMENSIONS 0.03
MLS STATUS Active
STORIES 1
SUBDIVISION McKinley Partners Limited Partnership
TAXES 11444
VIEW Yes
VIEW DESCRIPTION Water
WATER Public
MORTGAGE CALCULATOR
   

TOTAL MONTHLY PAYMENT

0
P
I
*Estimate only
Listing provided by LandVest, Inc.

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

Additional school data provided by Onboard Informatics © 2026 Onboard Informatics. Information deemed reliable but not guaranteed.

Mortgage Calculator provided by Diverse Solutions © 2026

IDX data provided by Market Leader, courtesy of Maine Listings.

This IDX solution is (c) Diverse Solutions 2026.


SATELLITE VIEW



 
CONTACT US ABOUT 255 DIAMOND AVENUE
 / 
We respect your online privacy and will never spam you. By submitting this form with your telephone number you are consenting for Administrator Sunday River Real Estate to contact you even if your name is on a Federal or State "Do not call List".