129 Riverside St is a 2,144 square foot condo with 3 bedrooms and 2 bathrooms. Based on Redfin's Watertown data, we estimate the home's value is $921,082.
CondoProperty Type
1892Year Built
$430Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$921,082
$25K since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 5% lower than the average sale price ($970K) of 6 comparable homes.
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2026
$8,889 (+4.5%)
$728,600
2025
$8,510 (+15.6%)
$728,600
2024
$7,364 (−9.8%)
$629,400
2023
$8,166 (+9.9%)
$601,300
2022
$7,432 (+9.9%)
$560,900
2021
$6,760 (+1.8%)
$551,800
2020
$6,643 (+5.7%)
$547,200
2019
$6,287 (+4.9%)
$488,100
2018
$5,993 (+1.2%)
$444,900
2017
$5,923 (+10.7%)
$426,400
2016
$5,352 (−7.7%)
$391,200
2015
$5,796 (+6.6%)
$385,600
2014
$5,436 (+5.1%)
$363,400
2013
$5,170 (+1.9%)
$352,200
2012
$5,072 (+5.5%)
$352,200
2011
$4,809 (+4.6%)
$345,500
2010
$4,599 (+6.0%)
$345,500
2009
$4,337
$354,300
Tax history for 129 Riverside St
Year
Property tax
Land + Additions
Assessment*
2026
$8,889 (+4.5%)
$728,600
2025
$8,510 (+15.6%)
$728,600
2024
$7,364 (−9.8%)
$629,400
2023
$8,166 (+9.9%)
$601,300
2022
$7,432 (+9.9%)
$560,900
2021
$6,760 (+1.8%)
$551,800
2020
$6,643 (+5.7%)
$547,200
2019
$6,287 (+4.9%)
$488,100
2018
$5,993 (+1.2%)
$444,900
2017
$5,923 (+10.7%)
$426,400
2016
$5,352 (−7.7%)
$391,200
2015
$5,796 (+6.6%)
$385,600
2014
$5,436 (+5.1%)
$363,400
2013
$5,170 (+1.9%)
$352,200
2012
$5,072 (+5.5%)
$352,200
2011
$4,809 (+4.6%)
$345,500
2010
$4,599 (+6.0%)
$345,500
2009
$4,337
$354,300
*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: 760
Bathroom Information
# of Full Baths: 2
Heating & Cooling
Heating Type: Forced Air
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 7
Exterior
Exterior Information
Physical Condition: Average
Building Style Type: Townhouse
Construction Type: Frame
Exterior Wall: Shingle
Roof Shape Type: Gable
Property Information
Living Sq. Ft: 2,144
Gross Sq. Ft: 2,474
# of Units: 1
# of Stories: 3
Lot Information
# of Buildings: 1
Land Sq. Ft: 6,053
Municipality Name: WATERTOWN
Acres: 0.139
Zoning Code: T
State Use Description: CONDOMINIUM
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 2,144
Stories: 3.0
Lot Size: —
Style: Condo/Co-op
Year Built: 1892
Year Renovated: —
County: Middlesex County
APN: 3803299S
Home facts updated by county records on Jul 29, 2026
Around this home
Schools
Places
Transit
Hosmer Elementary School
Public PreK-5 • Assigned • 0.7mi
7/10
Watertown Middle School
Public 6-8 • Assigned • 1.0mi
7/10
Watertown High School
Public 9-12 • Assigned • 1.0mi
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.