Dreaming of owning your very own island in Maine? Welcome to Poplar Knoll--a 31-acre private island where adventure, solitude, and possibility converge. Rising from the waters of Graham Lake near Ellsworth, this remarkable property boasts over 5,700 feet of shoreline, offering an entire world of your own to explore.
At the island's heart, a 50-foot rise reveals sweeping views through ancient oak and hemlock forests, while hidden coves, rugged shoreline, and winding footpaths invite endless discovery. The existing improvements--a rustic 20' x 24' camp with loft bedroom, an 8' x 12' bunkhouse, and an 8' x 12' outhouse--provide a simple basecamp for your island adventures or the foundation for a grander vision.
A white sand beach stretches out in front of the camp, creating the perfect setting for swimming, boating, and evenings spent around a crackling campfire beneath a canopy of stars. Whether you envision a secluded seasonal retreat, a multi-generational family compound, or a lasting conservation legacy, Poplar Knoll offers a once-in-a-lifetime opportunity to create something truly extraordinary.
Complete with a 1/10 ownership share of a mainland access lot on Graham Lake's western shore in Waltham, this rare offering combines the magic of being completely removed from the everyday with the practicality of convenient mainland access.
A private island. A blank canvas. A life less ordinary.
Active
$669,000
1 Eagle Island, Mariaville, ME 04605
--beds
--baths
31.39Acres
Land
Built in ----
31.39 Acres Lot
$-- Zestimate®
$--/sqft
$-- HOA
What's special
White sand beachHidden covesRugged shorelineWinding footpathsPrivate island
- 4 days |
- 263 |
- 17 |
Zillow last checked:
Listing updated:
Listed by:
Rock Coast Realty
Source: Maine Listings,MLS#: 1666378
Facts & features
Property
Parking
- Parking features: No Driveway, None
Features
- Has view: Yes
- View description: Scenic, Trees/Woods
- Body of water: Graham Lake
- Frontage length: Waterfrontage: 5700,Waterfrontage Owned: 5700
Lot
- Size: 31.39 Acres
- Features: Rural, Wooded
Details
- Additional structures: Outhouse/Privy, Outbuilding
- Zoning: NROA
Utilities & green energy
- Electric: Off Grid
- Sewer: None
- Water: None
Community & HOA
Location
- Region: Ellsworth
Financial & listing details
- Annual tax amount: $2,584
- Date on market: 6/10/2026
Estimated market value
Not available
Estimated sales range
Not available
$1,690/mo
Price history
| Date | Event | Price |
|---|---|---|
| 6/10/2026 | Listed for sale | $669,000 |
Source: | ||
| 6/2/2026 | Listing removed | $669,000 |
Source: | ||
| 7/21/2025 | Listed for sale | $669,000+361.4% |
Source: | ||
| 5/31/2016 | Sold | $145,000 |
Source: | ||
Public tax history
Tax history is unavailable.
Monthly payment
Estimated monthly payment$1,822
All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.
See how much you could borrow to make a competitive offer.
Climate risks
Neighborhood: 04605
Nearby schools
GreatSchools rating
- 3/10Cave Hill SchoolGrades: PK-5Distance: 4.4 mi
- 2/10Sumner Middle SchoolGrades: 6-8Distance: 15.4 mi
- 4/10Sumner Memorial High SchoolGrades: 9-12Distance: 15.4 mi
A local agent can set up tours, give advice and negotiate with sellers.
- Maine
- Hancock County
- Mariaville
- 04605
- 1 Eagle Island








