21 Flint Rd is a 2,921 square foot multi-family home on a 5,663 square foot lot with 4 bedrooms and 2 bathrooms. Based on Redfin's Watertown data, we estimate the home's value is $1,205,943.
Multi-familyProperty Type
1925Year Built
5,663 sq ftLot Size
$413Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,205,943
$5,000 since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 19.9% lower than the average sale price ($1.51M) 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
$13,924 (+7.2%)
$604,700 + $536,600
$1,141,300
2025
$12,992 (+9.1%)
$604,700 + $507,600
$1,112,300
2024
$11,906 (−9.5%)
$596,800 + $420,800
$1,017,600
2023
$13,151 (+7.1%)
$559,500 + $408,900
$968,400
2022
$12,284 (+14.5%)
$514,700 + $412,400
$927,100
2021
$10,731 (+1.8%)
$477,400 + $398,600
$876,000
2020
$10,538 (+1.9%)
$477,400 + $390,600
$868,000
2019
$10,341 (−0.6%)
$477,400 + $325,500
$802,900
2018
$10,407 (−1.1%)
$477,400 + $295,200
$772,600
2017
$10,524 (+7.9%)
$462,500 + $295,200
$757,700
2016
$9,754 (+8.0%)
$417,800 + $295,200
$713,000
2015
$9,033 (+3.0%)
$376,700 + $224,300
$601,000
2014
$8,768 (+1.9%)
$361,800 + $224,300
$586,100
2013
$8,604 (+5.3%)
$361,800 + $224,300
$586,100
2012
$8,172 (+13.6%)
$343,200 + $224,300
$567,500
2011
$7,191 (+4.6%)
$309,600 + $207,000
$516,600
2010
$6,876 (−4.8%)
$309,600 + $207,000
$516,600
2009
$7,222
$351,700 + $238,300
$590,000
Tax history for 21 Flint Rd
Year
Property tax
Land + Additions
Assessment*
2026
$13,924 (+7.2%)
$604,700 + $536,600
$1,141,300
2025
$12,992 (+9.1%)
$604,700 + $507,600
$1,112,300
2024
$11,906 (−9.5%)
$596,800 + $420,800
$1,017,600
2023
$13,151 (+7.1%)
$559,500 + $408,900
$968,400
2022
$12,284 (+14.5%)
$514,700 + $412,400
$927,100
2021
$10,731 (+1.8%)
$477,400 + $398,600
$876,000
2020
$10,538 (+1.9%)
$477,400 + $390,600
$868,000
2019
$10,341 (−0.6%)
$477,400 + $325,500
$802,900
2018
$10,407 (−1.1%)
$477,400 + $295,200
$772,600
2017
$10,524 (+7.9%)
$462,500 + $295,200
$757,700
2016
$9,754 (+8.0%)
$417,800 + $295,200
$713,000
2015
$9,033 (+3.0%)
$376,700 + $224,300
$601,000
2014
$8,768 (+1.9%)
$361,800 + $224,300
$586,100
2013
$8,604 (+5.3%)
$361,800 + $224,300
$586,100
2012
$8,172 (+13.6%)
$343,200 + $224,300
$567,500
2011
$7,191 (+4.6%)
$309,600 + $207,000
$516,600
2010
$6,876 (−4.8%)
$309,600 + $207,000
$516,600
2009
$7,222
$351,700 + $238,300
$590,000
*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: 1,314
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
Construction Type: Frame
Exterior Wall: Wood Siding/Shingle
Roof Shape Type: Gable
Property Information
Living Sq. Ft: 2,921
Gross Sq. Ft: 5,384
# of Units: 2
# of Stories: 3
Lot Information
# of Buildings: 1
Land Sq. Ft: 5,663
Municipality Name: WATERTOWN
Acres: 0.13
Zoning Code: T
State Use Description: 2-FAMILY RESIDENCE
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 2.0
Sq. Ft.: 2,921
Stories: 3.0
Lot Size: 5,663 square feet
Style: Multi-Family (2-4 Unit)
Year Built: 1925
Year Renovated: —
County: Middlesex County
APN: 566785S
Home facts updated by county records on Jul 29, 2026
Around this home
Schools
Hosmer Elementary School
Public PreK-5 • Assigned • 0.4mi
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.