20 Sunnybank Rd is a 4,103 square foot multi-family home on a 5,227 square foot lot with 9 bedrooms and 7 bathrooms. Based on Redfin's Watertown data, we estimate the home's value is $1,856,296.
Multi-familyProperty Type
1925Year Built
5,227 sq ftLot Size
$452Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,856,296
$339K since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 25.9% higher than the average sale price ($1.47M) 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: 246
Bathroom Information
# of Full Baths: 7
Heating & Cooling
Heating Type: Forced Hot Water
Fireplace Information
# of Fireplaces: 2
Has Fireplace
Room Information
# of Rooms: 14
Exterior
Exterior Information
Physical Condition: Average
Building Style Type: Duplex
Construction Type: Frame
Exterior Wall: Aluminum Siding
Roof Shape Type: Hip
Property Information
Living Sq. Ft: 4,103
Gross Sq. Ft: 5,672
# of Units: 2
# of Stories: 3
Parking & Garage Information
Parking Type: Basement Garage
Garage / Carport Type: Basement
Lot Information
# of Buildings: 1
Land Sq. Ft: 5,227
Municipality Name: WATERTOWN
Acres: 0.12
Zoning Code: T
State Use Description: 2-FAMILY RESIDENCE
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 9
Baths: 7.0
Sq. Ft.: 4,103
Stories: 3.0
Lot Size: 5,227 square feet
Style: Multi-Family (2-4 Unit)
Year Built: 1925
Year Renovated: —
County: Middlesex County
APN: 581758S
Home facts updated by county records on Jul 29, 2026
Around this home
Schools
Hosmer Elementary School
Public PreK-5 • Assigned • 0.3mi
7/10
Watertown Middle School
Public 6-8 • Assigned • 1.3mi
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.