156 Congress Street, Belfast, ME 04915
Local realty services provided by:CENTURY 21 Advantage
Listed by: sally bilancia, chelsea hodgdon
Office: better homes & gardens real estate/the masiello group
MLS#:1657636
Source:ME_MREIS
Price summary
- Price:$2,200,000
- Price per sq. ft.:$478.26
About this home

Set in the beautiful coastal town of Belfast, this thoughtfully designed, one-of-a-kind 3-4 bedroom, 3.5 bath home blends striking architecture with sustainable, net-zero living. Built for efficiency, durability, and year-round comfort, it offers a rare combination of innovation and livability. Inside, the home features a spacious, flexible layout highlighted by a remarkable 50' x 15' heated sunroom along the south side--an inviting, light-filled space that naturally warms the home in winter while remaining comfortable in summer. Open living areas provide a seamless flow for everyday living and entertaining. The commercial-ready kitchen offers exceptional functionality for serious cooking or potential business use. A large family room with mini kitchen and access to a covered porch creates an ideal gathering space for indoor-outdoor living. Adding to the home's character are several ''secret'' rooms hidden behind custom bookcases. Designed for long-term performance, the home includes an arctic slab foundation for temperature stability, closed-cell insulation, and strategic orientation to maximize seasonal sunlight. Redundant systems--including heat pumps, a propane Generac generator, and a wood stove--add efficiency and peace of mind. A 25kW solar array powers the home, often resulting in minimal to no utility bills. The roof design enhances efficiency with reflective materials for summer cooling and snow retention for winter insulation. Outdoors, enjoy a large fenced backyard and trails through the wooded portion of the lot. A 2-car attached garage adds convenience. All just walking distance from the Belfast waterfront downtown. (Note: This property has a 3BR septic design.)...
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Home facts
- Year built:2023
- Listing ID #:1657636
- Updated:April 15, 2026 at 11:00 PM
Rooms and interior
- Bedrooms:4
- Total bathrooms:4
- Full bathrooms:3
- Half bathrooms:1
- Rooms Total:12
- Flooring:Carpet
- Kitchen Description:Pantry, Refrigerator
- Bedroom Description:1st Floor Primary Bedroom w/Bath, Primary Bedroom w/Bath
- Living area:4,600 sq. ft.
Heating and cooling
- Heating:Direct Vent Heater, Heat Pump
Structure and exterior
- Year built:2023
- Building area:4,600 sq. ft.
- Lot area:1.17 Acres
- Lot Features:Intown, Level, Neighborhood
- Architectural Style:Contemporary
- Construction Materials:Metal Clad, Wood Frame
- Foundation Description:Concrete Perimeter, Slab
Utilities
- Water:Public
- Sewer:Private Sewer, Septic Design Available
Finances and disclosures
- Price:$2,200,000
- Price per sq. ft.:$478.26
- Tax amount:$12,224 (2025)
Features and amenities
- Appliances:Dryer, Refrigerator, Washer
- Laundry features:Dryer, Laundry - 1st Floor, Main Level, Upper Level, Washer
- Pool features:Above Ground
Parking
- Parking description:5 - 10 Spaces, Inside Entrance, Paved
- Garage:Yes
- Garage spaces:2
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