434 Sea View AvenueOsterville, MA 02655MLS Number 22605173

  • Price: $6,600,000
  • Est. Mortgage of $/month
  • 2 Days on Market
$
$
%
$/month over payments
Federal 30-year interest rate: 7.4% last updated on Oct 8, 2026
* All Figures are estimates. Check with your bank or proposed mortgage company for actual interest rates.
This product uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.
  • 5Bedrooms
  • 2.44Acreage
  • 8Bathrooms
  • 2003Year Built
New Seabury Sotheby's International Realty
New Seabury Sotheby's International Realty
Office: 508.477.8300
12 Mallway
Mashpee, MA 02649
Architecturally stunning and beautifully appointed, this exceptional residence is set within one of Cape Cod's premier resort communities. Perfectly sited on 2.44 acres, the elegant home combines exquisite craftsmanship and refined detailing with a warm, inviting sense of style and ambiance. Nearly 5,000 square feet of custom-designed living space flows seamlessly from one room to the next, creating an ideal setting for both sophisticated entertaining and relaxed everyday living. The spacious living room is designed for both grand-scale entertaining and comfortable everyday living, featuring a handsome wet bar and seamless access to the light-filled sunroom overlooking the resort style pool. The dining area provides an inviting setting for formal gatherings, while the beautifully appointed kitchen with a generous center island, granite countertops, and custom backsplash, serves as the heart of the home. Refined millwork and thoughtful architectural details throughout add a timeless sense of elegance. The luxurious primary suite offers a spa-inspired bath, private sitting area, and separate office. The second-floor features three en-suite bedrooms, complemented by a fourth en-suite bedroom with a private balcony above the two-car garage. The outdoor setting is a defining feature of the property. A striking in-ground pool, pool house, fire pit, and beautifully designed landscaping create an inviting backdrop for summer entertaining and relaxed afternoons at home. Multiple outdoor spaces are framed by the grounds, while the long driveway and substantial acreage provide a welcome sense of seclusion. A distinctive offering on one of Osterville's premier residential streets, this is a property that brings together architectural character, exceptional outdoor living, and privacy in a coveted Cape Cod setting. The information contained herein has been obtained through sources deemed reliable but cannot be guaranteed as to its accuracy. Buyers are encouraged to do their own due diligence through independent verification.

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Listed by Robert B Kinlin of Berkshire Hathaway HomeServices Robert Paul Properties

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Basic Information

  • Lot Features Interior Lot, Wooded, Cleared, Level
  • Mls Area Major Barnstable
  • Mls Status Active
  • Parcel Number OSTE M:0138 B:0002 L:0004

Location

  • Address434 Sea View Avenue
  • Building Number434
  • CountyBarnstable
  • StateMA
  • StreetSea View Avenue
  • TownOsterville
  • Zip02655

Interior

  • Flooring Wood, Tile
  • Interior Features HU Cable TV, Sound System, Walk-In Closet(s), Wet Bar

Utilities

  • Cooling Central Air
  • Cooling YN Yes
  • Heating Natural Gas
  • Heating YN Yes
  • Water Source Public

Tax Information

  • Tax Assessed Value $4,250,500
  • Tax Year 2026
  • Taxes$34,658

Rooms

  • Bathroom8
  • Bathrooms Total Decimal 6.5
  • Bedrooms5
  • Full Bath5
  • Half Baths3
  • Laundry Features Electric Dryer Hookup, Washer Hookup

Building

  • Building Area Units Square Feet
  • Construction Materials Shingle Siding
  • Fireplaces Total 1
  • GarageYes
  • Patio And Porch Features Deck, Patio, Porch
  • Property StyleGambrel
  • Rooms10
  • Year Built2003

Amenities

  • Appliances IncludedCountertop Range, Dishwasher, Microwave, Gas Range, Refrigerator, Range Hood, Wall/Oven Cook Top, Natural Gas, Water Heater
  • Other AmenitiesFireplace, Pool
  • Security Features Security System

Parking

  • Attached Garage YN Yes
  • Parking Features Garage Door Opener, Off Street
  • Parking Spaces6

Basic Information

  • List Price$6,600,000
  • MLS Number22605173
  • Modification Date10/10/2026
  • Property SubTypeSingle Family Residence
  • Virtual TourView Tour

Property

  • Acreage2.44
  • Other Structures Pool House, Outbuilding

Exterior

  • Exterior Features Outdoor Shower
  • RoofAsphalt

Property Information

  • Lot Size Square Feet 106,286
  • Lot Size Units Acres
  • Square Feet4,955

Other

  • Date Listed10/09/2026

broker reciprocity The data relating to real estate for sale on this site comes from the Broker Reciprocity (BR) of the Cape Cod & Islands Multiple Listing Service, Inc. Summary or thumbnail real estate listings held by brokerage firms other than New Seabury Sotheby's International Realty are marked with the BR Logo and detailed information about them includes the name of the listing broker. Neither the listing broker nor New Seabury Sotheby's International Realty shall be responsible for any typographical errors, misinformation, or misprints and shall be held totally harmless.

This site was last updated October 10, 2026 8:52 AM UTC. All properties are subject to prior sale, changes, or withdrawal.

New Seabury Sotheby's International Realty has chosen to display only certain towns and/or types or styles of properties. This site may not show all listings that are available through the Cape Cod & Islands Multiple Listing Service, Inc.

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