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
For sale
$7,950,000
850 Sea View Ave, Barnstable, MA 02630
8beds
7,350sqft
Est.:
Single Family Residence
Built in 2005
1.22 Acres Lot
$-- Zestimate®
$1,082/sqft
$-- HOA
What's special
Sea view avenueOne-bedroom apartmentQuartersawn oak floorsStone terraceSeven bedroomsRadiant floorsCurved walls
- 198 days |
- 770 |
- 41 |
Zillow last checked: 7 hours ago
Listing updated: February 24, 2026 at 12:09am
Listed by:
Jack Cotton 508-957-5500,
Sotheby's International Realty 508-428-9115,
Jack Cotton 508-957-5500
Source: MLS PIN,MLS#: 73427916
Tour with a local agent
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 8
- Bathrooms: 9
- Full bathrooms: 7
- 1/2 bathrooms: 2
Primary bedroom
- Level: Second
- Area: 220
- Dimensions: 11 x 20
Bedroom 2
- Level: Second
- Area: 187
- Dimensions: 11 x 17
Bedroom 3
- Level: Second
- Area: 266
- Dimensions: 14 x 19
Bedroom 4
- Level: Second
- Area: 144
- Dimensions: 12 x 12
Primary bathroom
- Features: Yes
Dining room
- Level: First
- Area: 360
- Dimensions: 15 x 24
Family room
- Level: First
- Area: 330
- Dimensions: 22 x 15
Kitchen
- Level: First
- Area: 238
- Dimensions: 17 x 14
Living room
- Features: Flooring - Wood, French Doors
- Level: Main,First
- Area: 483
- Dimensions: 23 x 21
Heating
- Central, Natural Gas
Cooling
- Central Air
Appliances
- Included: Gas Water Heater, Water Heater, Range, Dishwasher, Microwave, Refrigerator, Freezer, Washer, Dryer
- Laundry: In Basement
Features
- Flooring: Wood, Tile
- Doors: French Doors
- Basement: Partial,Partially Finished
- Number of fireplaces: 3
- Fireplace features: Living Room
Interior area
- Total structure area: 7,350
- Total interior livable area: 7,350 sqft
- Finished area above ground: 7,350
Property
Parking
- Total spaces: 9
- Parking features: Detached, Garage Door Opener, Paved Drive, Off Street, Driveway
- Garage spaces: 3
- Uncovered spaces: 6
Features
- Patio & porch: Screened, Covered
- Exterior features: Porch - Screened, Covered Patio/Deck, Balcony, Pool - Inground, Professional Landscaping, Sprinkler System
- Has private pool: Yes
- Pool features: In Ground
- Has view: Yes
- View description: Scenic View(s), Water, Bay
- Has water view: Yes
- Water view: Bay,Water
- Waterfront features: Sound, 3/10 to 1/2 Mile To Beach, Beach Ownership(Deeded Rights)
Lot
- Size: 1.22 Acres
- Features: Level
Details
- Parcel number: 114/001/003,2231785
- Zoning: RF-1
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Shingle
- Property subtype: Single Family Residence
Materials
- Frame
- Foundation: Concrete Perimeter
- Roof: Wood
Condition
- Year built: 2005
Utilities & green energy
- Sewer: Private Sewer
- Water: Public
- Utilities for property: for Gas Range
Community & HOA
Community
- Features: Shopping, House of Worship, Marina
- Security: Security System
HOA
- Has HOA: No
Location
- Region: Barnstable
Financial & listing details
- Price per square foot: $1,082/sqft
- Tax assessed value: $5,181,300
- Annual tax amount: $42,248
- Date on market: 9/23/2025
- Exclusions: Custom Area Rugs
- Road surface type: Paved
Estimated market value
Not available
Estimated sales range
Not available
$3,912/mo
Price history
Price history
| Date | Event | Price |
|---|---|---|
| 9/9/2025 | Listed for sale | $7,950,000$1,082/sqft |
Source: MLS PIN #73427916 Report a problem | ||
Public tax history
Public tax history
Tax history is unavailable.Monthly payment
Est. payment
$43,719/mo
Principal & interest
$39678
Property taxes
$4041
More affordability tools
Climate risks
Neighborhood: Osterville
Nearby schools
GreatSchools rating
- 3/10Barnstable United Elementary SchoolGrades: 4-5Distance: 3.5 mi
- 3/10Barnstable High SchoolGrades: 8-12Distance: 4.9 mi
- 8/10West Villages Elementary SchoolGrades: K-3Distance: 3.7 mi
Schools provided by the listing agent
- High: Barnstable
Source: MLS PIN. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.
Local experts in 02630
- Massachusetts
- Barnstable County
- Barnstable
- 02630
- Osterville
- 850 Sea View Ave
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