
331 Mountain St Sharon — Photo 1 of 42
$1,200,000
Investment Analysis — 331 Mountain St
Sharon, MA 02067
Based on HUD Small Area Fair Market Rent for Boston-Cambridge-Quincy, MA-NH HUD Metro FMR Area, a 6-bedroom in 02067 carries an estimated $4,370/mo in gross rent — about a 1.75% cap rate and $20,951/yr in estimated NOI at the $1,200,000 list price. Adjust every assumption in the calculator below.
Beds
6
Baths
4.5
SqFt
4,448
Style
Single Family
Built
1977
Set well back from the street on nearly 2 wooded acres, this distinctive Gambrel Cape offers exceptional space and versatility, including a separate 2-bedroom ADU/In-Law Apartment above the garage. Conveniently located near commuter rail, Lake Massapoag, nature trails, downtown Sharon, and within the East School District. A gracious foyer leads to the recently renovated eat-in kitchen with quartz countertops and abundant cabinetry. The first floor offers a character-filled living room with a stone fireplace, two generously sized bedrooms, including a primary suite with en-suite bath, with one bedroom currently used as an office. An additional full bath with soaking tub completes the first floor.The second floor offers two additional spacious bedrooms, each with its own walk-in closet, plus another full bath. The walkout lower level adds over 1,000 square feet of flexible space, with a fireplace, half bath, and storage, offering options for a family room, home office, exercise area, hobby space, or workshop. The separate 2-bedroom ADU/In-Law Apartment includes a galley kitchen, living room, full bath, and laundry, along with separately metered utilities and a new heating/cooling system. The ADU/In-Law Apartment has its own dedicated 2-bedroom septic system, separate from the 4-bedroom system serving the main residence. This space offers potential for additional living space, guest accommodations, or rental use. With its generous living space and separate apartment, this property offers exceptional flexibility in a convenient Sharon setting.
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 4,448 sq ft principal dwelling). Lot size: 80,000 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.
Property Details
Financials
Parking
Interior Specifications
Climate & Utilities
Building & Exterior
Property & Lot
Amenities & Appliances
Gas Water Heater • Range • Dishwasher • Refrigerator • Washer • Dryer
Neighborhood
Public Transportation • Shopping • Tennis Court(s) • Park • Walk/Jog Trails • Golf
Geography
Floorplan Breakdown
Structural Layout
Living Room
Lvl FirstFlooring - Hardwood, Window(s) - Bay/Bow/Box
Dining Room
Lvl FirstFlooring - Stone/Ceramic Tile
Kitchen
Lvl FirstFlooring - Stone/Ceramic Tile, Pantry, Countertops - Stone/Granite/Solid, Countertops - Upgraded, Cabinets - Upgraded, Remodeled
Primary Bedroom
Lvl FirstBathroom - Full, Closet, Flooring - Hardwood
Bedroom 2
Lvl FirstBedroom 3
Lvl SecondWalk-In Closet(s), Flooring - Hardwood
Bedroom 4
Lvl SecondWalk-In Closet(s), Flooring - Hardwood
Bathroom 1
Lvl FirstBathroom - Full, Bathroom - Double Vanity/Sink, Bathroom - With Shower Stall, Flooring - Stone/Ceramic Tile
Bathroom 2
Lvl FirstBathroom - Full, Bathroom - With Tub, Flooring - Stone/Ceramic Tile
Bathroom 3
Lvl SecondBathroom - Full, Bathroom - With Shower Stall, Skylight, Flooring - Stone/Ceramic Tile
Listing Agent: Isabella Fawcett
Listing Office: Conway - Hingham
MLS® Number: 73584074








