
392 S Main St Cohasset — Photo 1 of 35
Recent Drop: $289,000
$4,200,000
Investment Analysis — 392 S Main St
Cohasset, MA 02025
Based on HUD Small Area Fair Market Rent for Boston-Cambridge-Quincy, MA-NH HUD Metro FMR Area, a 4-bedroom in 02025 carries an estimated $4,200/mo in gross rent — about a 0.33% cap rate and $13,812/yr in estimated NOI at the $4,200,000 list price. Adjust every assumption in the calculator below.
Beds
4
Baths
4.5
SqFt
5,763
Style
Single Family
Built
1800
A remarkable waterfront setting meets exceptional craftsmanship on 1.55 acres along Cohasset’s Gulph River. Reimagined over two years as a forever home, this residence was comprehensively reconstructed by a respected local builder and expanded from the original foundation up, transforming a classic Cape into an elegant French Colonial while preserving meaningful pieces of its history. More than 5,700 SF of living space is framed by panoramic river and marsh views with walls of glass presenting spectacular sunrises and serene sunsets. The home's slopeside position creates an elevated setting overlooking the river and marsh while offering a private backyard oasis. Inside the home, wide-plank hickory floors, high-efficiency Andersen windows and doors, closed-cell insulation, three-zone HVAC and a high-performance hot water system reflect the same attention to quality found throughout. At the center of the home, the chef’s gourmet kitchen pairs professional-grade Viking appliances with leathered Brazilian quartzite, custom cabinetry, imported Moroccan tile and a commercial-grade hood trimmed in reclaimed 1800s barn beams. Open living and dining spaces flow to the waterside deck, while the living room’s gas fireplace features a handcrafted mantel of the original hand-sawn barn beam. The primary suite is a private retreat with a balcony, a walk-in closet, and a distinctive spa bath with a custom Turkish-spindle vanity, an oversized clawfoot soaking tub, and a Tadelakt-finished shower. Three additional bedrooms and two more full baths complete the second floor. The finished walkout lower level, with two sets of French doors, water views, full bath, and polished concrete floors, offers flexible space for a gym, recreation, guests and more. Outside, an expansive lawn offering endless possibilities leads toward the river with timeless views across the estuary and direct access to the water. A renovated barn adds exceptional versatility, including a heated and cooled second floor ideal for an office or studio. MoistureShield CoolDeck composite decking, a backup generator, and thoughtful efficiency upgrades complete this extraordinary Cohasset property, just a short walk to the Village, commuter rail, restaurants, and harbor.
ADU Potential
Massachusetts allows one accessory dwelling unit by right in single-family zoning districts statewide (M.G.L. c. 40A §3; 760 CMR 71.00, effective Feb 2025). Estimated maximum ADU size for this property: 900 sq ft (the lesser of 900 sq ft or half the 5,763 sq ft principal dwelling). Lot size: 67,518 sq ft.
Based on listing data, which indicates the property type — not the zoning district. Local dimensional, septic (Title 5), and historic-district requirements still apply. Not legal advice — verify with the municipality.
Estimates — not financial advice
These figures are illustrative estimates for informational purposes only — not an appraisal, valuation, or guarantee of rent, income, or returns, and not financial, tax, or investment advice. Rent is either the figure reported on the MLS listing — in-place rent that may differ from market and is not verified against the actual leases — or, where the listing reports none, an estimate from HUD Small Area Fair Market Rents, a government benchmark that may differ from actual market rent. Each figure is labelled with its source. Cap rate, NOI, and returns depend on the assumptions shown, which you can change. MLS and other third-party data may be inaccurate or out of date. Verify all figures independently and consult your own financial, tax, and legal advisors before making any investment decision.
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Financials
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Interior Specifications
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Building & Exterior
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Amenities & Appliances
Range • Dishwasher • Microwave • Refrigerator • Range Hood
Neighborhood
Public Transportation • Shopping • Pool • Tennis Court(s) • Park • Walk/Jog Trails
Geography
Floorplan Breakdown
Structural Layout
Living Room
Lvl Main,First23 x 22
Flooring - Hardwood, Cable Hookup, Open Floorplan, Recessed Lighting, Lighting - Overhead, Beadboard
Dining Room
Lvl Main,First12 x 11
Flooring - Hardwood, Open Floorplan, Lighting - Overhead
Kitchen
Lvl Main,First26 x 22
Closet/Cabinets - Custom Built, Flooring - Hardwood, Window(s) - Picture, Dining Area, Balcony / Deck, Balcony - Exterior, Pantry, Countertops - Stone/Granite/Solid, Countertops - Upgraded, French Doors, Kitchen Island, Wet Bar, Breakfast Bar / Nook, Cabinets - Upgraded, Deck - Exterior, Exterior Access, Open Floorplan, Recessed Lighting, Remodeled, Stainless Steel Appliances, Wine Chiller, Gas Stove, Lighting - Overhead
Office
Lvl Second20 x 16
Flooring - Hardwood, Exterior Access, Open Floor Plan, Remodeled
Family Room
Lvl Main,First12 x 11
Flooring - Hardwood, Open Floorplan, Lighting - Overhead
Master Bedroom
Lvl Second28 x 12
Bathroom - Full, Bathroom - Double Vanity/Sink, Cathedral Ceiling(s), Closet - Linen, Walk-In Closet(s), Closet/Cabinets - Custom Built, Flooring - Hardwood, Balcony / Deck, Balcony - Exterior, French Doors, Deck - Exterior, Recessed Lighting, Remodeled, Lighting - Overhead
Bedroom 2
Lvl Second17 x 13
Bedroom 3
Lvl Second17 x 12
Closet, Flooring - Hardwood, Recessed Lighting
Bedroom 4
Lvl Second14 x 13
Closet, Flooring - Hardwood, Recessed Lighting, Lighting - Overhead
Bedroom 5
Lvl Basement13 x 13
Recessed Lighting, Flooring - Concrete
Bathroom 1
Lvl Second15 x 12
Bathroom - Full, Bathroom - With Shower Stall, Bathroom - With Tub, Closet/Cabinets - Custom Built, Flooring - Stone/Ceramic Tile, Countertops - Stone/Granite/Solid, Countertops - Upgraded, Double Vanity, Recessed Lighting, Lighting - Sconce, Lighting - Overhead, Soaking Tub
Bathroom 2
Lvl Second12 x 10
Bathroom - Full, Bathroom - Tiled With Shower Stall, Flooring - Stone/Ceramic Tile, Countertops - Stone/Granite/Solid, Double Vanity, Recessed Lighting, Lighting - Sconce
Bathroom 3
Lvl Second9 x 9
Bathroom - Full, Bathroom - Tiled With Tub & Shower, Flooring - Stone/Ceramic Tile, Recessed Lighting
Property History
$4,200,000
Was $4,489,000
Aug 18, 2026
MLS® 73500198
$4,489,000
Apr 11, 2026
MLS® 73500198
$4,489,000
Jan 26, 2026
MLS® 73411512
$4,489,000
Jul 30, 2025
MLS® 73411512
Listing Agent: Rosemary Sullivan
Listing Office: Conway - Hingham
MLS® Number: 73500198
