$2,495,000
1230 S River St
Marshfield, MA, 02050
Welcome to Seacrest, also known as the Coast Guard Mansion—an extraordinary estate set high on a commanding hilltop with sweeping panoramic views across the South River to the Atlantic Ocean beyond. More than a residence, Seacrest is a local landmark, a home that has stood witness to more than a century of history and now presents a remarkable opportunity.The estate’s distinctive design has been attributed to Richard Morris Hunt, the celebrated American architect of the Gilded Age whose work helped define some of the country’s most iconic estates. From the moment you arrive, Seacrest possesses a presence that is increasingly rare, grand yet inviting, architecturally significant yet wonderfully livable.Step inside and the craftsmanship immediately takes center stage. A magnificent wood central staircase rises from the entry hall to a dramatic upper walkway connecting the home’s two wings, creating an unforgettable architectural focal point. The spectacular great room soars to approximately twenty-foot ceilings, while the formal dining room is wrapped in rare tiger-eye maple paneling, lending warmth, depth, and character. A handsome mahogany-paneled office provides another richly detailed space.Extensive renovations and thoughtful updates have enhanced Seacrest while respecting the architecture that makes it so special. A significant renovation by respected South Shore architectural firm introduced a beautifully appointed custom center-island kitchen and reimagined primary suite, seamlessly blending modern comfort with the home’s original character. Numerous additional improvements and custom details throughout further elevate the property for today’s lifestyle.Offering approximately 4,880 square feet, twelve rooms, four bedrooms and four bathrooms, Seacrest provides an exceptional combination of grand entertainment spaces and comfortable private retreats. Its gracious proportions, extraordinary millwork, six fireplaces, custom windows, and irreplaceable architectural details create a home unlike anything being built today.Set on 2.86 private acres, the estate enjoys a timeless exterior and a spectacular elevated setting. Seacrest is more than a beautiful home. It is a piece of South Shore history—a landmark property where architecture, craftsmanship, privacy, and breathtaking coastal views come together in a way that simply cannot be recreated.
Property Details
Price:
$2,495,000
MLS #:
73577993
Status:
Active
Beds:
4
Baths:
3.5
Type:
Single Family
Subtype:
Single Family Residence
Listed Date:
Sep 16, 2026
Finished Sq Ft:
4,850
Total Sq Ft:
4,850
Lot Size:
124,582 sqft / 2.86 acres (approx)
Year Built:
1890
Schools
Elementary School:
South River
Interior
Above Grade Finished Area
4850
Appliances
Oven, Dishwasher, Microwave, Refrigerator, Range Hood
Bathrooms
3 Full Bathrooms, 1 Half Bathroom
Cooling
Central Air
Fireplaces Total
6
Flooring
Wood, Tile, Flooring – Hardwood, Flooring – Stone/Ceramic Tile
Heating
Baseboard, Natural Gas, Fireplace(s)
Interior Features
Lighting – Overhead, Recessed Lighting, Den, Office, Bonus Room, Mud Room
Exterior
Architectural Style
Neoclassical
Community Features
Public Transportation, House of Worship, Marina, Public School, T-Station
Exterior Features
Porch – Enclosed, Deck – Roof, Patio
Open Parking Spaces
16
Parking Spots
16
Parking Total
16
Patio And Porch Features
Porch – Enclosed, Deck – Roof, Patio
Roof
Tile
View
Scenic View(s)
Waterfront Features
Ocean, River, 1/2 to 1 Mile To Beach, Beach Ownership(Public)
Window Features
Insulated Windows
Financial
Tax Year
2026
Taxes
$23,372
Marie Andrews is an award-winning, licensed real estate broker with licenses in Massachusetts and Florida. She has been selling real estate in the greater Boston area for over 20 years. Over the past two decades, Marie has worked for Century 21 Advanced Realty, building a reputation as a multi-million dollar producer. She has developed an extensive network of investors, lenders, and attorneys. Marie has a wide knowledge base on property management, Massachusetts real estate law, and building…
More About MarieMortgage Calculator
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Current real estate data for Single Family in Marshfield as of Sep 16, 2026
67
Single Family Listed
93
Avg DOM
487
Avg $ / SqFt
$1,275,529
Avg List Price
Community
- Address1230 S River St Marshfield MA
- CityMarshfield
- CountyPlymouth
- Zip Code02050
Subdivisions in Marshfield
Similar Listings Nearby
Property Summary
- 1230 S River St Marshfield MA is a Single Family for sale in Marshfield, MA, 02050. It is listed for $2,495,000 and features 4 beds, 4 baths, and has approximately 4,850 square feet of living space, and was originally constructed in 1890. The current price per square foot is $514. The average price per square foot for Single Family listings in Marshfield is $487. The average listing price for Single Family in Marshfield is $1,275,529. To schedule a showing of MLS#73577993 at 1230 S River St in Marshfield, MA, contact your Pegasus Realty LLC agent at 781-858-3505.
Courtesy of Success! Real Estate. The property listing data and information 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 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 set forth herein.
1230 S River St
Marshfield, MA












































