45 Seth LaneYarmouth, MA 02664MLS Number 22501366

  • Price: $4,950,000
  • Est. Mortgage of $/month
  • 407 Days on Market
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Federal 30-year interest rate: 6.37% last updated on May 7, 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.

Parking

  • Attached Garage YN Yes
  • Open Parking YN Yes
  • Parking Features Basement, Guest
  • Parking Spaces14

Location

  • Address45 Seth Lane
  • Building Number45
  • CountyBarnstable
  • StateMA
  • StreetSeth Lane
  • TownYarmouth
  • Zip02664

Building

  • BasementBulkhead Access, Interior Entry, Full, Finished
  • Building Area Units Square Feet
  • Construction Materials Shingle Siding
  • FireplaceGas
  • Fireplace YN Yes
  • Fireplaces Total 6
  • FoundationPoured, Stone
  • GarageYes
  • Patio And Porch Features Deck, Patio
  • Property StyleAntique, Cape Cod
  • Rooms11
  • Window Features Bay/Bow Windows
  • Year Built1880

Water Body

  • Water AccessPrivate
  • Water Body NameBass River
  • Water Body TypeSalt
  • WaterfrontYes
  • Waterfront Features Beach Front, River Front, Private, Deep Water Access

Basic Information

  • Lot Features
    • Cape Cod Rail Trail
    • Conservation Area
    • House of Worship
    • Level
    • Marina
    • Near Golf Course
    • North of Route 28
    • Public Tennis
    • School
    • Shopping
  • Mls Area Major Bass River
  • Mls Status Pending/Continue to Show
  • Parcel Number 6149
  • Road Frontage DescriptionUnimproved

Basic Information

  • List Price$4,950,000
  • MLS Number22501366
  • Modification Date04/08/2026
  • Property SubTypeSingle Family Residence
  • Virtual TourView Tour

Property

  • Acreage1.37
  • Other Structures Outbuilding

Interior

  • Flooring Hardwood, Carpet, Tile
  • Interior Features Sound System, Recessed Lighting
  • Room Bedroom 2 Description Flooring: Carpet

Utilities

  • Cooling Central Air
  • Cooling YN Yes
  • Heating Hot Water
  • Heating YN Yes
  • Sewer Septic Tank, Private Sewer

Amenities

  • Appliances IncludedDishwasher, Washer, Security System, Refrigerator, Gas Range, Microwave, Electric Dryer, Gas Water Heater
  • Community Features Golf, Marina
  • Other Amenities
    • Basement
    • Beachfront
    • Dock
    • Fireplace
    • Garden
    • Golf
    • Tennis
    • Water View
    • Waterfront

Tax Information

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

School Information

  • High School DistrictDennis-Yarmouth

Rooms

  • Bathroom6
  • Bathrooms Total Decimal 5.5
  • Bedrooms5
  • Full Bath5
  • Half Baths1
  • Laundry Features Laundry Areas, First Floor
  • Main Level Bathrooms 2
  • 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)

Exterior

  • Exterior Features Outdoor Shower
  • Fencing Fenced
  • RoofAsphalt

Property Information

  • Living Area Units Square Feet
  • Lot Size Square Feet 59,677
  • Lot Size Units Acres
  • Property Condition Updated/Remodeled, Actual
  • Square Feet4,666

Other

  • Date Listed04/03/2025
  • Nitrogen Sensitive AreaYes
  • Spa Features Heated
  • View Count40

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 May 14, 2026 3:22 PM EDT. 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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