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$7,950,000

  • For Sale
  • Active
  • Single Family
  • 8 Beds
  • 7 Full Baths
  • 2 Partial Baths
  • 7,350 Sq. Ft.
  • 1.22 Acres
  • 3 Car Garage
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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

Full Property Details for 850 Sea View Ave

General

  • Price: $7,950,000
  • Taxes: $38,329 (2025)
  • Status: Active
  • Type: Single Family
  • MLS ID: 73427916
  • Updated: 12/2/2025
  • Added to Site: 128 day(s) ago

Rooms

Bathrooms

  • Total Bathrooms: 9
  • Full Bathrooms: 7
  • Half Bathrooms: 2

Bedrooms

  • Total Bedrooms: 8
  • Primary Bedroom: 11.00 x 20.00, Second
  • Bedroom 2: 11.00 x 17.00, Second
  • Bedroom 3: 14.00 x 19.00, Second
  • Bedroom 4: 12.00 x 12.00, Second

Other Rooms

  • Living Room: 23.00 x 21.00, Main, First
  • Family Room: 22.00 x 15.00, First
  • Kitchen: 17.00 x 14.00, First
  • Dining Room: 15.00 x 24.00, First

Parking

  • Garage: Yes
  • Garage Spaces: 3
  • Parking Features: Detached, Garage Door Opener, Paved Drive, Off Street, Driveway

Location

  • County: Barnstable

Structural Information

  • Architectural Style: Shingle
  • Basement: Yes
  • Square Feet: 7,350
  • Year Built: 2005

Lot Features

  • Lot Size (Acres): 1.22

Financial Considerations

  • Tax Amount: $38,329
  • Tax Year: 2025

Disclosures and Reports

  • Exclusions: Custom Area Rugs
  • Property ID: 114/001/003, 2231785
  • Block/Lot/Section: 1

Listed by Sotheby's International Realty, Jack Cotton

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Listing agent

— 850 Sea View Ave —

  • Jack Cotton

    Sotheby's International Realty

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Schools serving 850 Sea View Ave

School District:Barnstable School District
NameGradesDistance
Barnstable United Elementary School
730 Osterville West Barnstable, Barnstable, MA 02648
4-53.5 mi
West Villages Elementary School
760 Osterville-West Barnstable, Barnstable, MA 02648
K-33.7 mi
Barnstable High School
744 West Main Street, Barnstable, MA 02601
8-124.9 mi
Barnstable Intermediate School
895 Falmouth Road, Barnstable, MA 02601
6-75.1 mi
Disclaimer: School attendance boundaries provided by Pitney Bowes and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 850 Sea View Ave Get Price Alerts and Save Property

Date
Details
Price
Change
Source
9/09/2025
Listed
$7,950,000
109.21%
MLS
2/24/2017
Sold
$3,800,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History for 850 Sea View Ave

Year
Property Taxes
Change
Tax Assessment
Change
2025
$38,997
3%
$4,820,400
—
2024
$37,707
-8%
$4,828,000
-2%
2023
$40,951
25%
$4,910,200
44%
2022
$32,856
-1%
$3,408,300
8%
2021
$33,207
-4%
$3,165,600
1%
2020
$34,460
7%
$3,144,200
10%
2019
$32,155
-3%
$2,850,600
-4%
2018
$33,226
6%
$2,961,300
2%
2017
$31,288
-1%
$2,907,800
—
2016
$31,733
6%
$2,911,300
6%
2015
$29,809
2%
$2,747,400
—
2014
$29,224
—
$2,749,200
—
View All
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

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Listed by Sotheby's International Realty, Jack Cotton

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850 Sea View Avenue, Barnstable, MA 02655 (MLS# 73427916) is a Single Family property with 8 bedrooms, 7 full bathrooms and 2 partial bathrooms. 850 Sea View Avenue is currently listed for $7,950,000 and was received on September 09, 2025. Want to learn more about 850 Sea View Avenue? Do you have questions about finding other Single Family real estate for sale in Barnstable? You can browse all Barnstable real estate or contact a Coldwell Banker agent to request more information.

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