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At the west end of Osterville's iconic Sea View Avenue in Wianno, this extraordinary estate is more than a home-it is a masterpiece of craftsmanship and artistry. Set on 1.2 acres of horticultural privacy with glimpses of West Bay, the 7,350 sq. ft. residence showcases hand-built mahogany windows and doors, quartersawn oak floors, curved walls and bespoke cabinetry and moldings-all created with skill from a bygone era. Seven bedrooms in the main house are complemented by a one-bedroom apartment above the three-car garage, complete with radiant floors. Outdoors, a 50-foot gunite pool and stone terrace shaded by Japanese maples invite alfresco dining, while waves on Nantucket Sound echo just across the avenue. Ownership includes rare deeded access to a private Nantucket Sound beach and to Eel River for kayaking and paddle boarding. At 850 Sea View Avenue, every visit reveals new beauty and discoveries making this home a true legacy property. Please verify all information contained herein
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Basic Information
- Bedrooms8
- Mls StatusUnder Agreement
- Bathroom9
- Contingency Pending P&S
- Lot Features Level
- Parcel Number 114/001/003,2231785
- Road Frontage DescriptionPaved
Tax Information
- Tax Assessed Value $5,181,300
- Tax Year 2026
- Taxes$42,248
School Information
- High School Barnstable
- High SchoolBarnstable
Parking
- Parking Spaces9
- Covered Spaces 3
- Garage YN Yes
- Open Parking YN Yes
- Parking Features Detached, Garage Door Opener, Paved Drive, Off Street, Driveway
Rooms
- Bathrooms Total Decimal 8
- Bedroom 2 Second,11 x 17
- Bedroom 3 Second,14 x 19
- Bedroom 4 Second,12 x 12
- Dining Room First,15 x 24
- Family Room First,22 x 15
- Full Bath7
- Half Baths2
- Kitchen First,17 x 14
- Living Room Main, First,23 x 21
- Master Bedroom Second,11
Basic Information
- List Price$7,950,000
- MLS Number73427916
- Modification Date04/22/2026
- Property SubTypeSingle Family Residence
- PurchaseContractDate04/13/2026
- Virtual TourView Tour
Location
- NeighborhoodWianno
- SubdivisionWianno
- Address850 Sea View Avenue
- Building Number850
- CountyBarnstable
- StateMA
- StreetSea View Avenue
- TownBarnstable
- Zip02655
Building
- BasementPartial, Partially Finished
- Building Area Units Square Feet
- Construction Materials Frame
- Door Features French Doors
- FireplaceYes
- Fireplace Features Living Room
- Fireplaces Total 3
- FoundationConcrete Perimeter
- Garage Spaces3
- Patio And Porch Features Screened, Covered
- Property StyleShingle
- Rooms12
- Utilities For Gas Range
- Year Built2005
- Year Built Details Approximate
- Year Built Source Public Records
Property
- Acreage1.22
Interior
- Flooring Wood, Tile
Exterior
- Exterior Features
- Balcony
- Covered Patio/Deck
- Pool - Inground
- Porch - Screened
- Professional Landscaping
- Sprinkler System
- RoofWood
Utilities
- Cooling Central Air
- Cooling YN Yes
- Heat SystemYes
- Heating Central, Natural Gas
- Sewer Private Sewer
- Water Source Public
Property Information
- Square Feet7,350
- Building Area Source Measured
- Living Area 7,350
- Lot Size Square Feet 53,143
- Lot Size Units Acres
- View YN Yes
Amenities
- AmenitiesShopping, House of Worship, Marina
- Appliances IncludedGas Water Heater, Water Heater, Range, Dishwasher, Microwave, Refrigerator, Freezer, Washer, Dryer
- Pool Features In Ground
- Pool Private YN Yes
- Security Features Security System
Water Body
- Miles to Beach0.5
- Waterfront Features Sound,3/10 to 1/2 Mile To Beach, Beach Ownership(Deeded Rights)
Legal
- ZoningRF-1
Other
- Date Listed09/09/2025
- Farm Land Area Units Square Feet
- View Count2
Map Location
Listed by Jack Cotton of Sotheby's International Realty
- Home
- Listings
- MA
- Barnstable
- Barnstable
- 02655
- 850 Sea View Avenue
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