About this home
A rare waterfront landmark offering the quintessential Duxbury lifestyle. Set on a protected harbor with direct access to Duxbury Bay, this exceptional property invites you to swim from your private dock, launch a kayak or paddleboard, and enjoy breathtaking sunsets from the expansive waterside deck designed for effortless entertaining. Inside, custom wood craftsmanship reminiscent of a classic Herreshoff yacht creates a warm coastal ambiance. The open-concept floor plan features waterviews, a custom wet bar, and seamless indoor-outdoor living. Multiple bedroom suites include a charming guest suite with a sleeping loft, while the primary retreat offers a walk-in closet, office area, and full bath. A 29-foot suite above the attached two-car garage features private access, vaulted ceilings, and a kitchenette—ideal for guests, extended family, or a home office. Moments from Snug Harbor, Duxbury Harbor, beaches, and marinas, this is coastal living at its finest.
Listing last checked: Listing updated:
Listed by Liz Bone Team · South Shore Sotheby's International Realty · MLS #73537735
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Details at a glance
Interior6 property facts
- Rooms
- 7
- Heating
- Forced Air, Natural Gas
- Cooling
- Central Air, Ductless
- Flooring
- Wood, Tile, Carpet, Flooring - Wall to Wall Carpet, Flooring - Hardwood, Flooring - Wood, Flooring - Stone/Ceramic Tile
- Basement
- Yes · Partial, Bulkhead, Unfinished
- Fireplaces
- 2
Building6 property facts
- Style
- Single Family Residence
- Year built
- 2008
- Garage
- 2
- Parking
- 8
- Foundation
- Concrete Perimeter
- Roof
- Wood
Land & utilities6 property facts
- Lot size
- 0.34 acres
- Water
- Public
- Sewer
- Private Sewer
- Waterfront
- Y
- Pool
- Not reported
- Zoning
- RC
Financial2 property facts
- Annual taxes
- $23,507
- Assessment year
- 2026
Location
Estimated monthly cost
Explore costs at the $3,300,000 asking price. Adjust the assumptions to your situation.
Known monthly costs$18,646 / monthAdjust
- Principal & interest
- $16,687
- Property tax
- $1,959
- Insurance
- Not entered
- HOA
- Not entered
Listing annual taxes: $23,507. Initial monthly tax is one twelfth of that amount. HOA amount was not supplied.
Partial estimate: add insurance, monthly HOA to include those costs. Blank amounts are unknown.
The initial 6.5% rate is illustrative, not a current rate or lender quote. Excludes utilities, maintenance, closing costs and mortgage insurance, which may apply with a down payment below 20%. Taxes and insurance can change.
Price and status timeline
- New
$8,000 · Aug 12, 2026
More property insights
Automated value estimate $3,773,839
Estimated range $3,473,784–$4,073,893.
Automated estimates are not appraisals or guarantees of market value.
Request a professional market analysisPhoto-based condition insights
Overall presentation: above average
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About 644 Washington St
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