12 Commonwealth Rd is a 2,727 square foot multi-family home on a 4,356 square foot lot with 4 bedrooms and 2 bathrooms. - it last sold on May 05, 1987 for $270,000. Based on Redfin's Watertown data, we estimate the home's value is $1,268,280.
Multi-familyProperty Type
1925Year Built
4,356 sq ftLot Size
$465Est. Price/Sq.Ft.
6 spacesParking
Source:Public Records
Redfin Estimate
$1,268,280
$998K since sold in May 1987$122K since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 0.4% higher than the average sale price ($1.26M) of 6 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Property details
Interior
Basement Information
Basement Sq. Ft: 1,200
Bathroom Information
# of Full Baths: 2
Heating & Cooling
Heating Type: Steam
Fireplace Information
# of Fireplaces: 2
Has Fireplace
Room Information
# of Rooms: 10
Exterior
Exterior Information
Physical Condition: Average
Building Style Type: Duplex
Construction Type: Frame
Exterior Wall: Wood Siding/Shingle
Roof Shape Type: Hip
Property Information
Living Sq. Ft: 2,727
Gross Sq. Ft: 5,204
# of Units: 2
# of Stories: 3
Lot Information
# of Buildings: 1
Land Sq. Ft: 4,356
Municipality Name: WATERTOWN
Acres: 0.1
Zoning Code: T
State Use Description: 2-FAMILY RESIDENCE
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 2.0
Sq. Ft.: 2,727
Stories: 3.0
Lot Size: 4,356 square feet
Style: Multi-Family (2-4 Unit)
Year Built: 1925
Year Renovated: —
County: Middlesex County
APN: 1610805S
Home facts updated by county records on Jul 30, 2026
Around this home
Schools
Places
Transit
Hosmer Elementary School
Public PreK-5 • Assigned • 0.6mi
7/10
Watertown Middle School
Public 6-8 • Assigned • 1.4mi
7/10
Watertown High School
Public 9-12 • Assigned • 1.4mi
6/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
Watertown's urban-suburban feeling paired with its proximity to Cambridge & Boston have caused it to rapidly transform into a destination for home buyers. Historically a manufacturing city, it has changed into a restaurant, shopping, and biotech hub...
with a completely built-out residential landscape.