850 Sea View Avenue Barnstable, MA ^$ 7,950,000

850 Sea View Avenue

^$ 7,950,000

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850 Sea View Avenue

Barnstable, MA, 02655

^$ 7,950,000

Bedrooms8 Baths7.2 Sq 7,350

Monthly Estimate*

^$ 49,598

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Single Family Home for sale in Barnstable, MA

for $7,950,000 with 8 bedrooms and 7 full baths, 2 half baths. This 7,350 square foot home was built in 2005 on a lot size of 1.22.

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

Single Family Active

Price

^$ 7,950,000

Bedrooms

Full Bath

Half Bath

Property Type

Single Family

Taxes

^$ 38,329

Style

Shingle

Lot Size

1.22

Year Built

2005

Town/City

Barnstable

County/Region

Barnstable

MLS | Web ID

73427916

List By

Jack Cotton

Listing Agent

Sotheby's International Realty

Broker

Affordability Calculator

$52,792

Per Month

Monthly Principal & Interest: $49,598
Monthly Property Taxes: $3,194
Monthly Home Insurance: --

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Yearly Home Insurance

Default based on a 30-year fixed rate of 6.375% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.

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Nearby

Trends

Single family listings in Barnstable, MA

Average List Price ^$2,627,207

Percent of Sale Price 67%

About Barnstable, MA

45,501 Population

-5% Since 2002

^$64,834 Median Income

49.53 Median Age

21% Households with Children

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Trends Information provided by ATTOM Data Solutions.

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Pricing History

Date	Price	Price Change	Description
9/9/2025	$7,950,000		Listed Price

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850 Sea View Avenue, Barnstable, MA, 02655 is a Single Family Home for sale at $7,950,000 with 7,350 sqft and a lot size of 1.22. 850 Sea View Avenue has 8 bedrooms, 7.2 baths, and was built in 2005. The property's zip code is 02655 which is in Barnstable, MA

*Information deemed reliable but not guaranteed.

Financial calculator disclaimer: Default based on a 30-year fixed rate of 6.375% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.

Data is updated as of 12/18/2025.

The real estate information and related content displayed on this site is provided for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

The property listing data and information, or the Images, set forth herein were provided to MLS Property Information Network, Inc. from third party sources, including sellers, lessors and public records, and were compiled by MLS Property Information Network, Inc. The property listing data and information, and the Images, are for the personal, non-commercial use of consumers having a good faith interest in purchasing or leasing listed properties of the type displayed to them and may not be used for any purpose other than to identify prospective properties which such consumers may have a good faith interest in purchasing or leasing. MLS Property Information Network, Inc. and its subscribers disclaim any and all representations and warranties as to the accuracy of the property listing data and information, or as to the accuracy of any of the Images, set forth herein.

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850 Sea View Avenue

Single Family Home for sale in Barnstable, MA

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