Google street view image for 666 Main St, Watertown, MA 02472

Off market

$963,168

•

2 ba

•

2,100

sq ft

666 Main St, Watertown, MA 02472

About this home

666 Main St is a 2,100 square foot house on a 0.26 acre lot with 4 bedrooms and 2 bathrooms. Based on Redfin's Watertown data, we estimate the home's value is $963,168.

Single-familyProperty Type

1937Year Built

0.26 acresLot Size

$459Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$963,168

$41K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 0.7% higher than the average sale price ($957K) of 6 comparable homes.

SOLD SEP 1, 2026
$605,000
A
4 beds1.5 baths2,050 sq ft
59 Farnum Rd, Waltham, MA 02453
SOLD AUG 6, 2026
$790,000
B
4 beds2 baths1,344 sq ft
111 Warren St, Waltham, MA 02453
SOLD AUG 3, 2026
$1,135,000
C
3 beds2 baths2,156 sq ft
74 Rose Hill Way, Waltham, MA 02453
SOLD MAR 20, 2026
$959,900
D
4 beds2 baths1,812 sq ft
29 Puritan Rd, Watertown, MA 02472
SOLD JUL 1, 2026
$1,300,000
E
3 beds2 baths2,121 sq ft
43 Albemarle Rd, Newton, MA 02460
SOLD DEC 19, 2025
$950,000
F
4 beds2 baths2,249 sq ft
266 Linden St, Waltham, MA 02452

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Earn from this home

Sell

$914,433

Est. take-home

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Rent

$4,361/mo

Redfin rental estimate

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Market trends in 02472, MA

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

99.7%

0.3% MoM

Median sale price

$870K

$10K MoM

Avg. days on market

22d

0 days MoM

Recently sold homes

110

2 MoM

New listings for sale

$1,799,000
7 beds2 baths4,400 sq ft
340 School St, Watertown, MA 02472
$699,900
2 beds2 baths1,020 sq ft
69 Galen St #3, Watertown, MA 02472
$785,000
3 beds2 baths1,436 sq ft
66 Wayne Ave, Waltham, MA 02453
$1,395,000
7 beds3 baths3,822 sq ft
128 Summer St, Watertown, MA 02472
$590,000
2 beds1 bath1,140 sq ft
106 Poplar St #1, Watertown, MA 02472
$849,900
3 beds2 baths1,955 sq ft
30 Oakley Rd #2, Watertown, MA 02472
$699,000
3 beds1 bath1,185 sq ft
70 Putnam St #70, Watertown, MA 02472
$987,000
4 beds1.5 baths2,337 sq ft
10 Holly St, Watertown, MA 02472
$750,000
3 beds1.5 baths1,304 sq ft
138 Forest St, Watertown, MA 02472
$749,000
2 beds2 baths1,067 sq ft
3 Repton Cir #3114, Watertown, MA 02472
See all

Provided by Redfin

Sale history for 666 Main St

As the MLS and public records start to fill up, we'll list the details here.

Year

Property tax

Land + Additions

Assessment*

2026

$10,601 (+6.7%)

$453,100 + $415,800

$868,900

2025

$9,936 (+7.5%)

$453,100 + $397,600

$850,700

2024

$9,247 (−8.4%)

$442,000 + $348,300

$790,300

2023

$10,091 (+10.4%)

$434,900 + $308,200

$743,100

2022

$9,140 (+12.8%)

$391,500 + $298,300

$689,800

2021

$8,103 (+0.9%)

$363,200 + $298,300

$661,500

2020

$8,031 (+6.0%)

$363,200 + $298,300

$661,500

2019

$7,573 (+7.0%)

$345,400 + $242,600

$588,000

2018

$7,077 (−1.0%)

$317,100 + $208,300

$525,400

2017

$7,151 (+8.3%)

$306,500 + $208,300

$514,800

2016

$6,601 (−3.7%)

$294,100 + $188,400

$482,500

2015

$6,852 (+6.2%)

$267,500 + $188,400

$455,900

2014

$6,449 (+5.4%)

$242,700 + $188,400

$431,100

2013

$6,120 (+3.5%)

$228,500 + $188,400

$416,900

2012

$5,911 (+7.5%)

$222,100 + $188,400

$410,500

2011

$5,501 (−13.0%)

$222,100 + $173,100

$395,200

2010

$6,320 (+14.7%)

$233,800 + $241,000

$474,800

2009

$5,512

$231,800 + $218,500

$450,300

Tax history for 666 Main St

Year

Property tax

Land + Additions

Assessment*

2026

$10,601 (+6.7%)

$453,100 + $415,800

$868,900

2025

$9,936 (+7.5%)

$453,100 + $397,600

$850,700

2024

$9,247 (−8.4%)

$442,000 + $348,300

$790,300

2023

$10,091 (+10.4%)

$434,900 + $308,200

$743,100

2022

$9,140 (+12.8%)

$391,500 + $298,300

$689,800

2021

$8,103 (+0.9%)

$363,200 + $298,300

$661,500

2020

$8,031 (+6.0%)

$363,200 + $298,300

$661,500

2019

$7,573 (+7.0%)

$345,400 + $242,600

$588,000

2018

$7,077 (−1.0%)

$317,100 + $208,300

$525,400

2017

$7,151 (+8.3%)

$306,500 + $208,300

$514,800

2016

$6,601 (−3.7%)

$294,100 + $188,400

$482,500

2015

$6,852 (+6.2%)

$267,500 + $188,400

$455,900

2014

$6,449 (+5.4%)

$242,700 + $188,400

$431,100

2013

$6,120 (+3.5%)

$228,500 + $188,400

$416,900

2012

$5,911 (+7.5%)

$222,100 + $188,400

$410,500

2011

$5,501 (−13.0%)

$222,100 + $173,100

$395,200

2010

$6,320 (+14.7%)

$233,800 + $241,000

$474,800

2009

$5,512

$231,800 + $218,500

$450,300

*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: 1,100

Bathroom Information
# of Full Baths: 2

Heating & Cooling
Heating Type: Steam

Fireplace Information
# of Fireplaces: 1
Has Fireplace

Room Information
# of Rooms: 9

Exterior

Exterior Information
Physical Condition: Average
Building Style Type: Colonial
Construction Type: Frame
Exterior Wall: Wood Siding/Shingle
Roof Shape Type: Gable

Property Information
Living Sq. Ft: 2,100
Gross Sq. Ft: 4,540
# of Units: 3
# of Stories: 3

Lot Information
# of Buildings: 1
Land Sq. Ft: 11,326
Municipality Name: WATERTOWN
Acres: 0.26
Zoning Code: S-6
State Use Description: 1-FAMILY RESIDENCE

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 4
Baths: 2.0
Sq. Ft.: 2,100
Stories: 3.0
Lot Size: 0.26 acres
Style: Single Family Residential
Year Built: 1937
Year Renovated: —
County: Middlesex County
APN: 3750909S

Home facts updated by county records on Sep 10, 2026

Around this home

Schools

Cunniff Elementary School

Public PreK-5 • Assigned • 0.4mi

8/10

Watertown Middle School

Public 6-8 • Assigned • 0.7mi

7/10

Watertown High School

Public 9-12 • Assigned • 0.6mi

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...
2 weeks ago • Watertown
Benjamin Ginsburg
Redfin Premier agent
155 deals
Was this helpful?
Watertown’s market has exploded in recent years, with high home prices. Located close to Boston, it offers the perfect balance of a seamless urban commute and the tranquility of suburban living. Enhanced by flexible MBTA bus options and its location...
2 weeks ago • Watertown
Kyle MacNichol
Redfin Premier agent
57 deals
Was this helpful?

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

5/10 Heat Factor

7 days above 96° expected this year, 15 days in 30 years

6/10 Wind Factor

54% chance of strong winds in next 30 years

3/10 Air Factor

2 unhealthy days expected this year, 3 days in 30 years

Provided by First Street

Historical weather

Watertown, MA • 02472

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 9 hours in June and 4.4 hours in December, placing it below the U.S. average for solar exposure.

9 hrs

4.4 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$916,000 – $1.11M

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Home values near 666 Main St

Data from public records.

Address	Redfin Estimate
665 Main Street, Watertown, MA 5 Beds \| 2 Baths \| 2264 Sq. Ft.	$1,120,216
672 Main Street, Watertown, MA 4 Beds \| 2.5 Baths \| 3042 Sq. Ft.	$1,076,974

Address	Redfin Estimate
669 Main Street, Watertown, MA 3 Beds \| 2 Baths \| 2385 Sq. Ft.	$971,916
654 Main Street, Watertown, MA 3 Beds \| 2 Baths \| 1980 Sq. Ft.	$1,120,797

Address	Redfin Estimate
683 Main Street, Watertown, MA 3 Beds \| 2.5 Baths \| 2185 Sq. Ft.	$1,088,125
644 Main Street, Watertown, MA 3 Beds \| 2 Baths \| 1460 Sq. Ft.	$892,140

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 02472, MA

Sale history for 666 Main St

Tax history for 666 Main St

Property details

Around this home

Schools

Lifestyle

Local insights from Redfin agents

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 02472

Home values near 666 Main St

More real estate resources