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391 Sea View Avenue

Barnstable, MA 02655

4 beds
7 baths
6,830 sqft
~1 acre lot
$2,196 per sqft
2020 build
– on site

Overlooking the shimmering waters of Nantucket Sound, this extraordinary Wianno estate offers an unparalleled blend of elegance, privacy, and coastal charm. With its own private sandy beach and panoramic ocean views, this is a rare opportunity to own a legacy property, along Sea View Avenue, in one of Cape Cod's most coveted enclaves. Surrounded by lush, professionally landscaped gardens, the residence is a contemporary interpretation of classic shingle-style architecture, thoughtfully designed by the acclaimed firm PSD. Inside, bespoke millwork, soaring ceilings, and dramatic architectural details define the living spaces, while expansive walls of glass frame breathtaking vistas of sky and sea. Each room is a celebration of light, luxury, and craftsmanship! A charming two bedroom two bathroom guest house, with its own deck and water views, provides the perfect retreat. This is a fabulous opportunity to own a gracious Osterville estate and turn dreams into reality!

Listing courtesy of MLSPIN / Gene Orloff / Sotheby's International Realty

Last checked: Checking… • Last updated Jul 2, 2025 •

MLS# 73399167 —

This home is listed in more than one place. See it here.

The Building

Year Built:

2020
Year Built Details:

Approximate
Year Built Source:

Public Records
Architectural Style:

Contemporary
Roof:

Wood
Foundation Details:

Concrete Perimeter
Basement:

Crawl Space
Door Features:

Insulated Doors
Window Features:

Insulated Windows
Security Features:

Security System
Building Area Total:

6830
Building Area Units:

Square Feet
Building Area Source:

Public Records

Interior

Living Room Level:

First
Rooms Total:

9
Kitchen Level:

First
Dining Room Level:

First
Family Room Level:

First
Flooring:

Wood
Fireplace:

true
Fireplaces Total:

3
Laundry Features:

First Floor

Room Dimensions

Living Area:

6830
Living Area Source:

Public Record

Location

Directions:

From Wianno Ave South bear right onto Sea View Avenue follow to 391 on your left.
Longitude:

-70.379731
Latitude:

41.612148

The Property

Property Type:

Residential
Property Subtype:

Single Family Residence
Property Attached:

false
Parcel Number:

2233125
Zoning:

RF-1
Lot Size Units:

Acres
Lot Features:

Flood Plain
Lot Size Area:

1.23
Lot Size SqFt:

53578
Lot Size Acres:

1.23
View:

Scenic View(s)
View:

true
Waterview:

Yes
Waterview Features:

Ocean
Waterfront:

true
Waterfront Features:

Waterfront
Farm Land Area Units:

Square Feet
Road Frontage Type:

Public

Listing Agent

Contact info:

Taxes

Tax Year:

2025
Tax Book Number:

138
Tax Annual Amount:

92242
Tax Assessed Value:

11115900

Beds

Bedrooms Total:

4
Master Bedroom Level:

Second
Bedroom 2 Level:

Second

Baths

Total Baths:

5.5
Total Baths:

7
Full Baths:

4
Half Baths:

3
Master Bath Features:

Yes

The Listing

Home Warranty:

false

Heating & Cooling

Heating:

Central
Heating:

true
Cooling:

Central Air
Cooling:

true

Utilities

Utilities:

for Gas Range
Electric:

200+ Amp Service
Sewer:

Private Sewer
Water Source:

Public

Appliances

Appliances:

Water Heater

The Community

Community Features:

Shopping
Association:

false
Spa:

false
Senior Community:

false

Parking

Parking Features:

Attached
Parking Total:

2
Attached Garage:

true
Garage:

true
Garage Spaces:

4
Carport:

false
Covered Spaces:

4

Monthly cost estimate

Asking price

$15,000,000

Expense	Monthly cost
Mortgage	$80,320
Taxes	$7,686
Insurance	$4,125
Utilities	$348 See report
Total	$92,479/mo.^*
	^*This is an estimate

Explore the Area

My Commute

From

Walk Score®

Provided by WalkScore® Inc.

Bike Score®

Provided by WalkScore® Inc.

Transit Score®

Provided by WalkScore® Inc.

Soundscore™

Provided by HowLoud

Air Pollution Index

Provided by ClearlyEnergy

Sale history

Date	Event	Source	Price	% Change
7/2/25 Jul 2, 2025	Listed / Active	MLSPIN	$15,000,000	140.0% (23.9% / YR)
8/21/19 Aug 21, 2019		MLSPIN	$6,250,000

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This house located in Mid Cape, Barnstable, MA 02655 is currently for sale for $15,000,000. 391 Sea View Avenue is a 6,830 square foot house with 4 beds and 7 baths that has been on Estately for 1 days. 391 Sea View Avenue is in the Mid Cape neighborhood of Barnstable and has a WalkScore® of 7, making it car-dependent.

Listing Courtesy of: MLSPIN and Sotheby's International Realty.

The property listing data and information set forth herein were provided to MLS Property Information Network, Inc. (MLSPIN) 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 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., Estately and its subscribers disclaim any and all representations and warranties as to the accuracy of the property listing data and information set forth herein. Users may not reproduce or redistribute the data found on this site. The data is for viewing purposes only. All information provided is deemed reliable but is not guaranteed by Estately or MLSPIN and should be independently verified.