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1230 S River St, Marshfield MA 02050

$2,495,000

Estimated $17,321/month Calculator

Single Family

4 Bedrooms

Baths

4850

Total Parking: 16

124,582 (2.86)

Built in 1890

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.

This home has been viewed 4 times

Last Checked: September 21st, 2026 at 6:58am (Source: MLS PIN #73577993)

Air Conditioning

Waterview

Lead Paint Free

General Information for 1230 S River St, Marshfield MA 02050

Listing ID73577993

Property TypeSingle Family / Detached

Price$2,495,000 ($514.43/SqFt)

StyleColonial

CityMarshfield

CountyPlymouth

Neighborhood(s)

Garage Parking0

ZoningR-1

Year Built1890

Year Built SourcePublic Records

Year Built DetailsActual,Renovated Since

Interior Features for 1230 S River St, Marshfield MA 02050

Approximate Living Area Total4850

Living Area Includes BasementNo

Rooms11

Bedrooms4

Primary En Suite BathroomYes

BasementFull

Cooling1, Split

Fireplaces

AppliancesRange

FlooringTile

Electric

Exterior Features for 1230 S River St, Marshfield MA 02050

Approximate Lot Size (Acres)2.86

Approximate Lot Size (Square Feet)124582

Total Parking16

Garage Parking0

WaterPublic

SewerPrivate Sewer

Lot Features

Parking Features

Exterior FeaturesPorch

Foundation Materials

Construction Materials

Road Frontage Type

Patio & PorchCovered

Roof MaterialAsphalt/fiberglass Shingles

Utility Connections110 Volts

Water ViewsYes

Water Views FeaturesBay

Waterfront0

Waterfront FeaturesRiver

Pool Features

Horse Permitted0

Horse AmenitiesRiver

Disclosures for 1230 S River St, Marshfield MA 02050

Lead PaintNone

UFFI

Living Area Includes BasementNo

Living Area Disclosure

Building Area SourcePublic Records

Special Listing Conditions

ExclusionsWasher & Dryer Are Negotiable

Title 5D

Compensation Based On

Financial Information for 1230 S River St, Marshfield MA 02050

Association Fee

Association Fee Frequency

Association Fee Includes

Real Estate Tax23372

Tax Year2026

Assessed Value$2,432,100

Location Information for 1230 S River St, Marshfield MA 02050

Elementary SchoolSouth River

Neighborhood(s)

Area AmenitiesWalk/jog Trails

Contact Information for 1230 S River St, Marshfield MA 02050

Agent

Name: Amy March

Office

Name: The Firm

Phone: 781-924-3205

Payment Calculator

, Interest

Property Taxes 1947.67

Principal & Interest 15373.4

HOA Dues

Term

Interest

Home Price

Down Payment

Exclusive Listing Agent

The Firm

Amy March

Agent Phone

Office Phone

(781) 924-3205

Text Agent Call Agent Call Office

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EXIT

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