45 Seth LaneSouth Yarmouth, MA 02664MLS Number 22501366

  • Price: $4,950,000
  • Est. Mortgage of $/month
  • 476 Days on Market
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$/month over payments
Federal 30-year interest rate: 6.55% last updated on Jul 16, 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
  • 1.37Acreage
  • 6Bathrooms
  • 1880Year Built
New Seabury Sotheby's International Realty
New Seabury Sotheby's International Realty
Office: 508.477.8300
12 Mallway
Mashpee, MA 02649
Every day at 45 Seth Lane feels like a vacation, where mornings rise with the tide and dawn paints soft light across Bass River. Set on 1.37 acres of vibrant gardens and green space with 288 feet of private river frontage, this 5-bedroom, 5.5-bath estate blends classic Cape Cod charm with modern comfort, where nearly every room is intentionally designed to capture panoramic river views. The sunlit river room and first-floor primary suite with new radiant-floor spa bath offer restful retreats, while updates-including a new Jack & Jill bath upstairs, a new full bath on the main level, and central air brings comfort to every season. From the licensed dock with water and electricity, you can slip into tranquil mornings of kayaking or paddle-boarding, or head out by boat to Nantucket Sound. Afternoons invite barefoot walks on the lawn, reading on the deck as boats drift by, or moments of stillness at the water's edge. Evenings end with sunsets awash in rose and gold, setting the stage for intimate dinners or quiet reflection. Treasured for its natural beauty and serenity, this rare waterfront estate offers more than a home-it is an enduring retreat into the timeless beauty of Cape Cod.

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Driving Directions

Listed by Raymond M Hall of John C Ricotta & Assoc.

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Location Information

  • Directions North Main street to Highland Ave. Follow Highland Ave towards Bass River, take second left onto Seth Lane (no street sign). Follow Seth Lane through private gates to circular drive.

Rooms

  • Bathroom6
  • Bathrooms Total Decimal 5.5
  • Bedrooms5
  • Full Bath5
  • Half Baths1
  • Laundry Features Electric Dryer
  • Room Bedroom 2 Features Bedroom 2, Shared Full Bath, View, Closet, High Speed Internet, Recessed Lighting
  • Room Master Bathroom Features Private Full Bath
  • Room Master Bedroom Features Walk-In Closet(s), View, Recessed Lighting, Office/Sitting Area, High Speed Internet, Dressing Room, Ceiling Fan(s), Cathedral Ceiling(s)

Interior

  • Flooring Hardwood, Tile, Carpet
  • Interior Features
    • Attic Storage
    • Cedar Closet(s)
    • Eat-in Kitchen
    • Kitchen Island
    • Recessed Lighting
    • Sound System
    • Walk-In Closet(s)
  • Room Bedroom 2 Description Flooring: Carpet

Amenities

  • Appliances IncludedDishwasher, Microwave, Gas Range, Refrigerator, Washer, Natural Gas, Water Heater, Tankless Water Heater
  • Association Amenities Golf Course, Marina
  • Other Amenities
    • Basement
    • Dock
    • Fireplace
    • Garden
    • Water View
    • Waterfront
  • Security Features Security System

Basic Information

  • Lot Features Fenced/Enclosed, Gentle Sloping, Level, Views
  • Mls Area Major Yarmouth
  • Mls Status Pending/Continue to Show
  • Parcel Number 61-49

Basic Information

  • List Price$4,950,000
  • MLS Number22501366
  • Modification Date04/25/2026
  • Property SubTypeSingle Family Residence
  • Virtual TourView Tour

Building

  • BasementFinished, Full
  • Building Area Units Square Feet
  • Construction Materials Shingle Siding
  • Fireplaces Total 6
  • GarageYes
  • Patio And Porch Features Deck, Patio
  • Rooms11
  • Year Built1880

Property Information

  • Lot Size Square Feet 59,677
  • Lot Size Units Acres
  • Square Feet4,666

Water Body

  • Water AccessPrivate
  • Water Body NameBass River
  • Water Body TypeSalt
  • Waterfront Features Salt

Tax Information

  • Tax Assessed Value $2,868,900
  • Tax Year 2026
  • Taxes$19,996

Parking

  • Attached Garage YN Yes
  • Parking Features
    • Direct Access
    • Driveway
    • Garage Door Opener
    • Gravel
    • Guest
    • Storage
  • Parking Spaces14

Location

  • Address45 Seth Lane
  • Building Number45
  • CountyBarnstable
  • StateMA
  • StreetSeth Lane
  • TownSouth Yarmouth
  • Zip02664

Property

  • Acreage1.37
  • Other Structures Outbuilding

Exterior

  • Exterior Features Outdoor Shower, Hot Tub, Underground Sprinkler System
  • RoofAsphalt

Utilities

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

Other

  • Date Listed04/03/2025
  • Nitrogen Sensitive AreaYes
  • View Count41

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 July 23, 2026 6:51 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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