Bright and spacious corner-unit townhouse with 3 levels of living. Featuring 3 bedrooms (one is a versatile loft space) and 2.5 bathrooms in a convenient location near Watertown Square, this inviting home offers a sun-filled open layout with hardwood floors, a charming breakfast nook, in-unit washer and dryer, dishwasher, and a private balcony perfect for relaxing outdoors. Enjoy easy access to public transportation with bus routes to downtown Boston and surrounding suburbs, as well as nearby shopping, dining, parks, and local amenities. Additional highlights include garage parking for two cars, snow removal, private storage and access to a shared yard, providing both comfort and convenience in a desirable neighborhood. Guest parking available. Move-In Costs Fees: First Month Rent: $3,600 Security Deposit: $3,600
Amenities
In-unit amenities
These amenities may not be available for every unit
View estimated energy costs and solar savings for this home
Internet
View Internet plans and providers available for this home
Provided by Down Payment Resource, RateUpdate.com, EnergySage, and AllConnect
Property details
Interior
Bathroom Information
# of Full Baths: 2
# of 1/2 Baths: 1
Heating & Cooling
Heating Type: Forced Hot Water
Exterior
Exterior Information
Physical Condition: Average
Building Style Type: Townhouse
Construction Type: Frame
Exterior Wall: Brick
Roof Shape Type: Gable
Property Information
Living Sq. Ft: 1,380
Gross Sq. Ft: 1,436
# of Units: 1
# of Stories: 2
Lot Information
# of Buildings: 1
Land Sq. Ft: 47,830
Municipality Name: WATERTOWN
Acres: 1.098
Zoning Code: R.75
State Use Description: CONDOMINIUM
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 2.5
Sq. Ft.: 1,380
Stories: 2.0
Lot Size: —
Style: Condo/Co-op
Year Built: 1984
Year Renovated: —
County: Middlesex County
APN: 2949099S
Home facts updated by county records on Jul 29, 2026
Sale and tax history for 91 Spring St #21
Sale History
Tax History
Date
Event
Price
YOUGOTLISTINGS #1
Aug 1, 2026
Rental Removed
$3,600
$3/sq ft
Jun 26, 2026
Listed for Rent
$3,600
$3/sq ft
Year
Property tax
Land + Additions
Assessment*
2026
$6,758 (+4.5%)
$553,900
2025
$6,470 (−4.2%)
$553,900
2024
$6,753 (−12.6%)
$577,200
2023
$7,723 (+6.4%)
$568,700
2022
$7,261 (+9.0%)
$548,000
2021
$6,663 (−2.8%)
$543,900
2020
$6,854 (+5.3%)
$564,600
2019
$6,506 (+5.0%)
$505,100
2018
$6,196 (+6.3%)
$460,000
2017
$5,827 (+15.4%)
$419,500
2016
$5,048 (−0.7%)
$369,000
2015
$5,085 (+6.3%)
$338,300
2014
$4,784 (+0.9%)
$319,800
2013
$4,740 (+1.9%)
$322,900
2012
$4,650 (+3.4%)
$322,900
2011
$4,495 (+4.6%)
$322,900
2010
$4,298 (+2.3%)
$322,900
2009
$4,201
$343,200
Around this home
Schools
Places
Transit
8/10
J.R. Lowell Elementary School
Public, PreK-5 • Assigned • 0.6mi
7/10
Watertown Middle School
Public, 6-8 • Assigned • 0.6mi
6/10
Watertown High School
Public, 9-12 • Assigned • 0.6mi
Provided by GreatSchools
About Watertown West
End
Watertown West End, located between the Charles River and Belmont, is a residential and commercial Watertown neighborhood with riverfront paths and a low-rise streetscape. The neighborhood’s character concentrates around Arsenal St at School St, where sidewalk storefronts, coffee counters, and small studios meet steady foot traffic. Community pillars include the Mosesian Center for the Arts, the Majestic 7 movie theater, and the Watertown Free Public Library. Brick mill buildings and mid-century apartment blocks mix with compact side streets of classic New England houses. The Charles River Greenway frames daily routines with long views and bike flow. Arsenal Yards adds a modern plaza feel without overpowering the older fabric.
Provided by Walk Score and Local Logic
Public facts and zoning for 91 Spring St #21
Beds
2
Baths
2.5
Sq. Ft.
1,380
Stories
2
Lot Size
—
Style
Condo/Co-op
Year Built
1984
Year Renovated
—
County
Middlesex County
APN
2949099S
Home facts updated by county records on Jul 29, 2026.
Additional resources
Zoning
Working on getting current and accurate zoning information for this home.Learn more
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.
All information is deemed reliable but not guaranteed. Redfin and its affiliates may receive compensation if you contact a rental property or sign a lease.
In-unit amenities
These amenities may not be available for every unit