Set along one of Mount Desert Island's most celebrated stretches of coastline, this private coastal compound combines two year-round residences, deeded dock access, and beautifully maintained grounds. At the heart of the property is Windward, the principal residence, where extensive improvements have created a home equally suited for everyday living and large-scale entertaining. Multiple gathering spaces, three fireplaces, a chef's kitchen, expansive covered porches, and a substantial granite terrace with sweeping views across Western Way encompassing the Cranberry Isles and the distant mountains of MDI provide a seamless connection between indoor and outdoor living. Offering five bedrooms and four-and-one-half baths, the residence features a spacious main-level primary suite complemented by four additional bedrooms on the second floor, including a generously sized ensuite bedroom that offers additional flexibility. Complementing the main home is Hard Aground, a fully independent guest residence offering four bedrooms, two baths, a fireplace, a flexible layout that includes two bedrooms and a full bath on the main level, and a deck with views across the lawn to the water beyond. Additional enhancements throughout the property include a dedicated fitness studio, media room, updated systems, and numerous interior and exterior upgrades. The result is a turnkey coastal estate equally suited as a primary residence or seasonal retreat. Beyond the residences, the property features curated gardens, mature landscaping, an apple orchard, deer fencing, and a gated entrance. Deeded access to a shared dock provides an opportunity to enjoy the surrounding waters and islands that make this region one of Maine's most sought-after destinations. Located just minutes from Southwest Harbor & Acadia National Park, this exceptional estate offers access to hiking, boating, dining, & outdoor recreation. A remarkable offering that brings together natural beauty, privacy, & modern comfort.
Active
Price cut: $250K (8/27)
$7,500,000
425 Seawall Road, Southwest Harbor, ME 04679
9beds
11,582sqft
Single Family Residence
Built in 2003
3.9 Acres Lot
$6,750,200 Zestimate®
$648/sqft
$-- HOA
What's special
Deer fencingBeautifully maintained groundsApple orchardFour-and-one-half bathsGated entranceExtensive improvementsMature landscaping
- 102 days
- 2,643
- 206
Zillow last checked:
Listing updated:
Listed by:
Portside Real Estate Group
Source: Maine Listings,MLS#: 1667999
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 9
- Bathrooms: 7
- Full bathrooms: 6
- 1/2 bathrooms: 1
Primary bedroom
- Features: Wood Burning Fireplace, Separate Shower, Suite, Vaulted Ceiling(s), Walk-In Closet(s), Cathedral Ceiling(s), Closet, Double Vanity, Full Bath, Soaking Tub
- Level: First
Primary bedroom
- Features: Closet
- Level: First
Bedroom 2
- Features: Built-in Features, Cathedral Ceiling(s), Closet, Double Vanity, Balcony/Deck, Full Bath, Separate Shower, Suite, Vaulted Ceiling(s)
- Level: Second
Bedroom 3
- Features: Closet, Double Vanity, Balcony/Deck, Built-in Features, Cathedral Ceiling(s), Full Bath, Vaulted Ceiling(s)
- Level: Second
Bedroom 4
- Features: Cathedral Ceiling(s), Closet, Balcony/Deck, Vaulted Ceiling(s)
- Level: Second
Bedroom 5
- Features: Double Vanity, Full Bath, Soaking Tub, Balcony/Deck, Cathedral Ceiling(s), Vaulted Ceiling(s), Closet, Walk-In Closet(s)
- Level: Second
Other
- Features: Closet, Laundry/Laundry Hook-up
- Level: First
Other
- Features: Closet
- Level: Second
Other
- Features: Closet
- Level: Second
Dining room
- Features: Built-in Features, Dining Area
- Level: First
Exercise room
- Level: Basement
Great room
- Features: Built-in Features, Wood Burning Fireplace
- Level: First
Kitchen
- Features: Breakfast Nook, Eat-in Kitchen, Kitchen Island, Pantry, Vaulted Ceiling(s)
- Level: First
Laundry
- Features: Built-in Features, Utility Sink
- Level: First
Living room
- Features: Built-in Features, Cathedral Ceiling(s), Vaulted Ceiling(s), Wood Burning Fireplace
- Level: First
Living room
- Features: Cathedral Ceiling(s), Informal, Tray Ceiling(s), Vaulted Ceiling(s)
- Level: Second
Living room
- Features: Built-in Features, Wood Burning Fireplace
- Level: First
Media room
- Level: Basement
Mud room
- Features: Built-in Features
- Level: First
Other
- Features: Workshop
- Level: Basement
Heating
- Baseboard, Heat Pump, Zoned, Radiant
Cooling
- Heat Pump, Window Unit(s)
Appliances
- Included: Cooktop, Dishwasher, Disposal, Dryer, Microwave, Gas Range, Refrigerator, Washer, Other
- Laundry: Built-Ins, Sink
Features
- 1st Floor Bedroom, Bathtub, Pantry, Shower, Storage, Walk-In Closet(s), Primary Bedroom w/Bath
- Flooring: Carpet, Tile, Wood, Ceramic Tile
- Doors: Storm Door(s)
- Windows: Double Pane Windows
- Basement: Bulkhead,Interior Entry,Crawl Space,Finished,Full,Sump Pump,Unfinished
- Number of fireplaces: 4
Interior area
- Total structure area: 11,582
- Total interior livable area: 11,582 sqft
- Finished area above ground: 8,493
- Finished area below ground: 3,089
Video & virtual tour
Property
Parking
- Total spaces: 5
- Parking features: Paved, 5 - 10 Spaces, Detached, Storage
- Garage spaces: 5
Features
- Patio & porch: Deck, Patio, Porch, Screened
- Has view: Yes
- View description: Fields, Mountain(s), Scenic, Trees/Woods
- Body of water: Western Way/Atlantic Ocean
- Frontage length: Waterfrontage: 262.77,Waterfrontage Owned: 262.77
Lot
- Size: 3.9 Acres
- Features: Irrigation System, Rural, Harvestable Crops, Rolling Slope, Landscaped, Wooded
Details
- Parcel number: SOURM018L062
- Zoning: SR
- Other equipment: Central Vacuum, Generator, Internet Access Available, Other
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Cottage,Shingle
- Property subtype: Single Family Residence
Materials
- Wood Frame, Shingle Siding
- Foundation: Poured Concrete
- Roof: Composition,Shingle,Wood
Condition
- Year built: 2003
Utilities & green energy
- Electric: Circuit Breakers, Underground
- Sewer: Private Sewer, Septic Tank
- Water: Public
Green energy
- Energy efficient items: Ceiling Fans, Thermostat
Community & HOA
Community
- Security: Security System, Fire Sprinkler System, Air Radon Mitigation System
Location
- Region: Southwest Harbor
Financial & listing details
- Price per square foot: $648/sqft
- Tax assessed value: $5,374,500
- Annual tax amount: $48,478
- Date on market: 6/18/2026
- Road surface type: Paved
Estimated market value
$6,750,200
$6.41M - $7.09M
Not available
Price history
| Date | Event | Price |
|---|---|---|
| 8/27/2026 | Price change | $7,500,000-3.2%$648/sqft |
Source:  Maine Listings #1667999 Report a problem | ||
| 6/18/2026 | Listed for sale | $7,750,000$669/sqft |
Source: Maine Listings #1667999 Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2024 | $48,478 -3.6% | $5,374,500 +73.8% |
| 2023 | $50,282 +10.6% | $3,092,400 |
| 2022 | $45,458 +0.3% | $3,092,400 |
| 2021 | $45,335 +1.9% | $3,092,400 |
| 2020 | $44,500 +3.2% | $3,092,400 |
| 2019 | $43,139 +2.4% | $3,092,400 |
| 2018 | $42,118 +5.9% | $3,092,400 |
| 2017 | $39,768 | $3,092,400 |
| 2016 | $39,768 | $3,092,400 |
| 2015 | $39,768 | $3,092,400 |
| 2014 | $39,768 | $3,092,400 |
| 2013 | $39,768 | $3,092,400 -31.2% |
| 2009 | -- | $4,493,900 |
| 2007 | -- | $4,493,900 |
Find assessor info on the county website
Monthly payment
Est. payment
Payment breakdown
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