OFF MARKET

Off market oct 2018 for $592K

$927,211

Est. refi paymentEst. refi $1,389/mo

•

3,902

sq ft

21 Court St, Groton, MA 01450

About this home

Don't miss out on this RENOVATED 3 Family Home in sought after Downtown Groton! Ideal investment property. 2 of 3 units have long-term tenants. This property has 2 recent high-efficiency natural gas boilers. 1st floor apartment has 2 beds, living room, eat in kitchen and large deck.Top apartment is vacant & newly renovated on 2 floors with grand kitchen and country porch. Apartment 21C is a converted post-and-beam barn and has 3 good size bedrooms and two baths. Great yard.

Multi-familyProperty Type

1800Year Built

0.5 acresLot Size

$238Est. Price/Sq.Ft.

2 garage spacesParking

Listed by Sadie Guichard • EXIT Assurance Realty

Bought with Jenepher Spencer • Coldwell Banker Residential Brokerage - Westford

Redfin checked: a minute ago

•Source:MLS PIN #72376322

Redfin Estimate

$927,211

$335K since sold in October 2018$1,000 since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 1.6% higher than the average sale price ($912K) of 6 comparable homes.

SOLD JUN 30, 2026
$990,000
A
4 beds2 baths3,078 sq ft
228 Main St, Groton, MA 01450
SOLD JUL 16, 2026
$699,000
B
5 beds3.5 baths3,291 sq ft
41 E Main St, Ayer, MA 01432
SOLD DEC 15, 2025
$735,000
C
5 beds4 baths3,330 sq ft
55 West Main St, Groton, MA 01450
SOLD NOV 21, 2025
$1,099,000
D
4 beds3.5 baths3,185 sq ft
247 Main St, Groton, MA 01450
SOLD JUL 23, 2026
$1,225,000
E
5 beds4 baths4,450 sq ft
56 Mara Ln, Groton, MA 01450
SOLD JUL 17, 2026
$725,000
F
4 beds2.5 baths2,744 sq ft
32 Sandy Pond Rd, Ayer, MA 01432

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Earn from this home

Sell

$484,258

Est. take-home

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Refinance

Est. cash available

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Market trends in 01450, MA

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

100.1%

1.3% MoM

Median sale price

$875K

$30K MoM

Avg. days on market

27d

5 days MoM

Recently sold homes

2 MoM

New listings for sale

OPEN FRI, 4PM TO 5:30PM
$535,000
2 beds1.5 baths1,428 sq ft
19 Baby Beach Rd, Groton, MA 01450
OPEN SAT, 11AM TO 1PM
$800,000
4 beds2.5 baths2,817 sq ft
70 Longley Rd, Groton, MA 01450
$1,150,000
4 beds4.5 baths3,600 sq ft
27-A Blacksmith Row #27, Groton, MA 01450
OPEN SAT, 11AM TO 12:30PM
$879,000
4 beds2.5 baths3,531 sq ft
140 Paquawket Path, Groton, MA 01450
OPEN SUN, 11AM TO 12:30PM
$549,999
3 beds2 baths1,332 sq ft
15 Court St Unit B, Groton, MA 01450
See all

Provided by Redfin

Sale history for 21 Court St

Year

Property tax

Land + Additions

Assessment*

2026

$11,524 (−1.6%)

$250,100 + $529,600

$779,700

2025

$11,709 (+1.1%)

$238,200 + $529,600

$767,800

2024

$11,586 (+7.5%)

$238,200 + $529,600

$767,800

2023

$10,778 (+8.3%)

$234,400 + $454,700

$689,100

2022

$9,956 (+7.3%)

$218,500 + $360,700

$579,200

2021

$9,275 (+12.7%)

$192,000 + $335,000

$527,000

2020

$8,228 (+0.2%)

$196,500 + $276,900

$473,400

2019

$8,211 (+14.7%)

$196,500 + $256,900

$453,400

2018

$7,156 (+2.2%)

$196,500 + $186,800

$383,300

2017

$6,999 (+2.6%)

$196,500 + $186,800

$383,300

2016

$6,819 (+2.8%)

$181,200 + $181,900

$363,100

2015

$6,634 (+5.1%)

$181,200 + $181,900

$363,100

2014

$6,311 (+3.1%)

$181,200 + $181,900

$363,100

2013

$6,123 (+3.2%)

$181,200 + $182,200

$363,400

2012

$5,934 (−1.8%)

$186,800 + $182,200

$369,000

2011

$6,044 (+11.5%)

$186,800 + $182,200

$369,000

2010

$5,419 (+6.6%)

$161,200 + $182,200

$343,400

2009

$5,084

$172,800 + $182,200

$355,000

Tax history for 21 Court St

Year

Property tax

Land + Additions

Assessment*

2026

$11,524 (−1.6%)

$250,100 + $529,600

$779,700

2025

$11,709 (+1.1%)

$238,200 + $529,600

$767,800

2024

$11,586 (+7.5%)

$238,200 + $529,600

$767,800

2023

$10,778 (+8.3%)

$234,400 + $454,700

$689,100

2022

$9,956 (+7.3%)

$218,500 + $360,700

$579,200

2021

$9,275 (+12.7%)

$192,000 + $335,000

$527,000

2020

$8,228 (+0.2%)

$196,500 + $276,900

$473,400

2019

$8,211 (+14.7%)

$196,500 + $256,900

$453,400

2018

$7,156 (+2.2%)

$196,500 + $186,800

$383,300

2017

$6,999 (+2.6%)

$196,500 + $186,800

$383,300

2016

$6,819 (+2.8%)

$181,200 + $181,900

$363,100

2015

$6,634 (+5.1%)

$181,200 + $181,900

$363,100

2014

$6,311 (+3.1%)

$181,200 + $181,900

$363,100

2013

$6,123 (+3.2%)

$181,200 + $182,200

$363,400

2012

$5,934 (−1.8%)

$186,800 + $182,200

$369,000

2011

$6,044 (+11.5%)

$186,800 + $182,200

$369,000

2010

$5,419 (+6.6%)

$161,200 + $182,200

$343,400

2009

$5,084

$172,800 + $182,200

$355,000

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Public record

Beds

Baths

Stories

Lot width

—

Lot depth

—

Lot size

0.5 Acres

Year renovated

—

Sq. Ft.

3,902

Year built

1800

Style

Multi-Family (2-4 Unit)

County

Middlesex County

APN

1597227S

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Sep 11, 2026.

Property details

Parking

Parking Information
Has Garage
# of Garage Spaces: 2
# of Covered Spaces: 2
Parking Spaces: 6
Parking Features: Off Street, Stone/Gravel

Interior

Bathroom Information
# of Bathrooms (Full): 4

Basement Information
Basement: Partial, Interior Entry, Concrete

Laundry Information
Laundry Features: Electric Dryer Hookup, Washer Hookup

Interior Features
# of Rooms (Total): 14
Window Features: Screens
Flooring: Wood, Tile, Vinyl, Carpet, Parquet, Hardwood
Interior Features: Ceiling Fan(s), Floored Attic, Walk-Up Attic, Cathedral/Vaulted Ceilings, Bathroom With Tub & Shower, Country Kitchen, Open Floorplan, Remodeled, Living Room, Kitchen, Laundry Room, Loft

Unit #1 Information
# of Levels: 2
# of Floors: 2
Lease: N

Unit #2 Information
# of Levels: 1
# of Floors: 1
Lease: N

Unit #3 Information
# of Levels: 2

Exterior

Building Information
Building Area (Total): 3,902
Foundation Details: Concrete Perimeter, Block, Stone, Granite
Construction Materials: Frame
Stories (Total): 5
Year Built Source: Public Records
Year Built Details: Approximate,Renovated Since
Color: Grey

Exterior Features
Roof: Shingle
Patio And Porch Features: Porch, Deck - Wood
Exterior Features: Rain Gutters, Garden, Stone Wall

Property Information
PropertySubType: 3 Family

Lot Information
Lot Size (Acres): 0.5
Lot Features: Cleared, Level
Road Frontage Type: Public
Road Responsibility: Public Maintained Road

Financial

Tax Information
Tax Annual Amount: $7,156.21
Tax Year: 2018

Utilities

Utility Information
Utilities: for Electric Range, for Electric Dryer, Washer Hookup
Sewer: Public Sewer
Water Source: Public
Electric: Circuit Breakers, 100 Amp Service, Individually Metered

Heating & Cooling
Has Heating
Has Cooling
Heating: Baseboard, Natural Gas, Oil
Cooling: Window Unit(s)

Location

Location Information
Directions: Rt119 (Main St) to Court Street
UnparsedAddress: 21 Court St, Groton MA 01450

Community Information
Senior CommunityYN: No
Community Features: Shopping, Pool, Tennis Court(s), Park, Walk/Jog Trails, Stable(s), Golf, Medical Facility, Bike Path, Conservation Area, House of Worship, Private School, Public School

Public facts

Beds: 7
Baths: 4.0
Sq. Ft.: 3,902
Stories: 2.0
Lot Size: 0.5 acres
Style: Multi-Family (2-4 Unit)
Year Built: 1800
Year Renovated: —
County: Middlesex County
APN: 1597227S

Home facts updated by county records on Sep 11, 2026

Other

Listing Information
Exclusions: Apt B&C Washer & Dryers Belong To Tenants
StandardStatus: Closed

Around this home

Schools

Florence Roche School

Public K-4 • Assigned • 0.6mi

8/10

Groton Dunstable Regional Middle School

Public 5-8 • Assigned • 0.7mi

7/10

Groton-Dunstable Regional High School

Public 9-12 • Assigned • 3.4mi

9/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

1/10 Flood Factor

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

4/10 Fire Factor

0.93% chance of being in a wildfire in next 30 years

4/10 Heat Factor

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

6/10 Wind Factor

27% chance of strong winds in next 30 years

2/10 Air Factor

1 unhealthy days expected this year, 1 days in 30 years

Provided by First Street

Historical weather

Groton, MA • 01450

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 4.3 hours in December, placing it below the U.S. average for solar exposure.

9 hrs

4.3 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$881,000 – $1.07M

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Nearby similar homes

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New listings for sale in 01450

OPEN FRI, 4PM TO 5:30PM

$535,000

2 beds1.5 baths1,428 sq ft

19 Baby Beach Rd, Groton, MA 01450

OPEN SAT, 11AM TO 1PM

$800,000

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OPEN SAT, 11AM TO 12:30PM

$879,000

4 beds2.5 baths3,531 sq ft

140 Paquawket Path, Groton, MA 01450

OPEN SUN, 11AM TO 12:30PM

$549,999

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Home values near 21 Court St

Data from public records.

Address	Redfin Estimate
20 Court St, Groton, MA 4 Beds \| 2 Baths \| 2528 Sq. Ft.	—
19 Court St, Groton, MA 3 Beds \| 1.5 Baths \| 1623 Sq. Ft.	$560,675

Address	Redfin Estimate
16 Court St, Groton, MA 3 Beds \| 1.5 Baths \| 1653 Sq. Ft.	$585,691
15 Court St, Groton, MA 5 Beds \| 1 Baths \| 2520 Sq. Ft.	$658,893

Address	Redfin Estimate
39 Court St, Groton, MA 5 Beds \| 3 Baths \| 3104 Sq. Ft.	$846,707
11 Court St, Groton, MA 4 Beds \| 2 Baths \| 2060 Sq. Ft.	$707,867

Property information provided by MLS PIN when last listed in 2018. This data may not match . Learn more.

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