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About this home
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.
Median sale price in this area is $852,952. (29% lower than this home)
PRICE DROP
0 price drops
16% of homes in this area have had a price drop in the past month.
Property details
Interior
Exterior
Finance
Kitchen
Bathroom
Bedroom
Living
Dining
Interior features
9 total rooms
Accessory apartment
Exercise room
Foyer
Internet available (broadband)
Screens on windows
Bathroom (half and full) and multiple full bathrooms with shower stalls
Skylight in one upstairs bathroom
Bedrooms
Master bedroom on the first floor with full bathroom, closet, and hardwood floors
Bedroom 2 on the first floor with closet and hardwood floors
Bedrooms 3 and 4 on the second floor with walk-in closets and hardwood floors
Bathrooms
Four full bathrooms and one half bath
First-floor baths include a double vanity with shower stall and a full bath with tub
Second-floor full bath with shower stall and skylight
Stone/ceramic tile flooring in baths
Kitchen
First-floor kitchen with pantry
Upgraded cabinets and countertops (stone/granite/solid surface)
Remodeled kitchen
Stone/ceramic tile flooring
Laundry & utility
First-floor laundry with washer hookup and electric dryer hookup
Washer and dryer included
Dryer hookup (electric)
Flooring
Hardwood floors throughout main living and bedrooms
Tile / stone (including stone/ceramic tile in kitchen, dining, baths, and laundry)
Heating & cooling
Forced air and baseboard heating (natural gas)
Central air and ductless cooling
Has heating and cooling
Appliances
Range
Dishwasher
Refrigerator
Washer
Dryer
Gas water heater
Fireplace
Two fireplaces, including one in the living room
Basement
Full basement, partially finished, walk-out access, interior entry
Exterior features
Fenced yard
Deck and balcony/deck
Rain gutters
Outdoor storage
Wooded and cleared lot
Lake/pond nearby and 1–2 miles to beach; public beach ownership
Public road frontage
Home design
Single family residence
Accessory dwelling unit on site
Red exterior color
Parking
Attached garage (2 garage spaces)
2 covered spaces
10 open parking spaces
Total of 12 parking spaces
Paved driveway and off-street parking
Security
Screens (on windows and some exterior openings)
Construction
Frame construction
Shingle roof
Concrete perimeter foundation
Year built per public records
Utilities
Public water
Private sewer
Electric with circuit breakers and generator connection
Generator connection available
Gas range hookup
HOA & community
Community offers public transportation, shopping, tennis courts, parks, walk/jog trails, golf, conservation areas, highway access, houses of worship, private and public schools, and T-station access
Not a senior community
Financial info
Property has an accessory apartment (ADU)
Other
Heat zones: 8
Sauna excluded from sale
Electricity and solar
View estimated energy costs and solar savings for this home
Oversized Gambrel Cape with Newer In- Law Apartment over the garage. Main home has finished First Floor with Large Rooms. The Second Floor of the main home is rough plumbed and ready to be finished. Title V in hand… Anderson Windows, New Roof, nice wooded lot surrounded by state park land, partially finished basement/ workshop, Town Water- come check it out!
Year
Property tax
Land + Additions
Assessment*
2023
$16,655 (+4.5%)
$396,800 + $499,100
$895,900
2022
$15,934 (+0.7%)
$330,400 + $476,400
$806,800
2021
$15,829 (+7.5%)
$312,000 + $462,800
$774,800
2020
$14,721 (+2.7%)
$312,000 + $462,800
$774,800
2019
$14,340 (+1.0%)
$276,000 + $462,800
$738,800
2018
$14,202 (+1.2%)
$270,400 + $462,800
$733,200
2017
$14,040 (+3.5%)
$252,800 + $462,800
$715,600
2016
$13,570 (+2.7%)
$252,800 + $422,000
$674,800
2015
$13,209 (+7.8%)
$232,000 + $418,700
$650,700
2014
$12,252 (+3.7%)
$211,200 + $385,000
$596,200
2013
$11,816 (+11.0%)
$207,200 + $370,600
$577,800
2012
$10,642 (+3.3%)
$207,200 + $322,000
$529,200
2011
$10,304 (+1.0%)
$207,200 + $322,000
$529,200
2010
$10,204 (−2.7%)
$235,600 + $333,800
$569,400
2009
$10,485
$235,200 + $356,500
$591,700
Public record
Public record
Permits
Beds
4
Baths
3
Stories
2
Lot width
—
Lot depth
—
Lot size
1.84 Acres
Year renovated
—
Finished Sq. Ft.
3,298
Unfinished Sq. Ft.
—
Total Sq. Ft.
3,298
Year built
1977
Style
Single Family Residential
County
Norfolk County
APN
220814
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Jul 20, 2023.
May 7, 2025 • Final
Electrical permit residential one and two family
Electrical
Apr 17, 2025 • Final
Gas
Install a new gas stove.
Gas
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
4/10 Fire Factor
1% chance of being in a wildfire in next 30 years
4/10 Heat Factor
6 days above 97° expected this year, 13 days in 30 years
6/10 Wind Factor
63% chance of strong winds in next 30 years
2/10 Air Factor
1 unhealthy days expected this year, 2 days in 30 years
Provided by First Street
Historical weather
Sharon, MA • 02067
Average low and high temperatures (°F)
34
19
36
19
50
31
59
39
68
49
80
60
83
64
78
57
72
54
63
43
52
34
38
23
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
80/ 100
Very good sunlight
Sunscore
There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
8.6 hrs
5.1 hrs
JuneDecember
Provided by Shadowmap
Redfin Estimate for 331 Mountain St
$1,201,041
$1,041 over list price of $1.20M
Nearby comparable homes
The Redfin Estimate uses 6 recent nearby sales, priced between $1.1M to $1.4M.