OFF MARKET

Off Market Oct 2024 for $660K

$835,145

Est. refi paymentEst. refi $1,172/mo

•

2,882

sq ft

21 Throne Hill Rd, Groton, MA 01450

About this home

Traditional colonial in sought after neighborhood setting. Open floor plan floor plan makes entertaining a joy. First floor highlighted by eat in kitchen with breakfast bar, fireplaced cathedral ceiling family room, dining room with chair rail, living room AND spectacular 4 season room with hot tub, wet bar, fireplace and tile floor! Half bath with laundry complete first floor. Second floor boasts 4 bedrooms and 2 updated full baths. Master bedroom has private bath with spa style amazing step in full tile shower and bamboo flooring. Family bath remodeled in 2021 a very nice space! Lower level has additional finished space perfect for home office, hobbies, or storage. Exterior space includes a deck off of the 4-season room, the ideal location for buyers looking for a private lot IN a neighborhood setting. Top ranked school system, great commuter location and beautiful neighborhood, close proximity to commuter rail and hiking trails. 21 Throne Hill Road a wonderful place to call home.

Single-familyProperty Type

1984Year Built

0.92 acresLot Size

$290Est. Price/Sq.Ft.

2 garage spacesParking

Listed by Jenepher Spencer • Coldwell Banker Realty - Westford

Bought with Jenepher Spencer • Coldwell Banker Realty - Westford

Redfin checked: a minute ago

•Source:MLS PIN #73285353

Redfin Estimate

$835,145

$175K since sold in October 2024$6,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 11.2% higher than the average sale price ($751K) of 6 comparable homes.

SOLD JUN 30, 2026
$815,000
A
4 beds2.5 baths2,382 sq ft
507 Longley Rd, Groton, MA 01450
SOLD MAY 7, 2026
$815,000
B
4 beds2.5 baths2,136 sq ft
53 Throne Hl, Groton, MA 01450
SOLD JUL 2, 2026
$785,000
C
4 beds2.5 baths3,283 sq ft
6 Baywoods Dr, Shirley, MA 01464
SOLD JUL 22, 2026
$825,000
D
4 beds2.5 baths3,322 sq ft
20 Squannacook Dr, Groton, MA 01450
SOLD JUL 7, 2026
$654,375
E
4 beds2.5 baths3,027 sq ft
94 Turner Rd, Townsend, MA 01469
SOLD JUN 5, 2026
$610,000
F
4 beds2 baths3,224 sq ft
96 Townsend St, Pepperell, MA 01463

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Earn from this home

Sell

$282,755

Est. take-home

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Refinance

Est. cash available

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Rent

$3,075/mo

Redfin rental estimate

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Market trends in 01450, MA

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

101.5%

0.6% MoM

Median sale price

$925K

$100K MoM

Avg. days on market

22d

1 days MoM

Recently sold homes

9 MoM

New listings for sale

$819,900
4 beds2.5 baths2,700 sq ft
197 Mill St, Groton, MA 01450
$825,000
3 beds2.5 baths2,154 sq ft
63 Hummingbird Ln Unit A, Groton, MA 01450
$475,000
2 beds1 bath864 sq ft
33 Longley Rd, Groton, MA 01450
HOT HOME
$899,900
4 beds2.5 baths3,008 sq ft
536 Longley Rd, Groton, MA 01450
$399,900
2 beds1.5 baths1,296 sq ft
8 Bradley Dr Unit C, Groton, MA 01450
See all

Provided by Redfin

Sale history for 21 Throne Hill Rd

Date

Event

Price

MLS PIN #73285353

Oct 10, 2024

Sold

$660,000

$229/sq ft

Sep 10, 2024

Contingent

—

Sep 4, 2024

Listed

$675,000

$234/sq ft

MLS PIN #72861966

Sep 10, 2021

Sold

$555,000

$193/sq ft

Jul 12, 2021

Contingent

—

Jul 7, 2021

Listed

$535,000

$186/sq ft

+33

Traditional colonial in sought after neighborhood setting. Open floor plan floor plan makes entertaining a joy. First floor highlighted by eat in kitchen with breakfast bar, fireplaced cathedral ceiling family room, dining room with chair rail, living room AND spectacular 4 season room with hot tub, wet bar, fireplace and tile floor! Half bath with laundry complete first floor. Second floor boasts 4 bedrooms and 2 full baths. Master bedroom has private bath with spa style amazing step in full tile shower and bamboo flooring. Lower level has additional finished space perfect for home office, hobbies, or storage. Exterior space includes a deck off of the 4-season room, the ideal location for buyers looking for a private lot IN a neighborhood setting. Top ranked school system, great commuter location and beautiful neighborhood, close proximity to commuter rail and hiking trails. 21 Throne Hill Road a wonderful place to call home.

MLS PIN #30197467

Mar 9, 1998

Sold

$257,500

$89/sq ft

Feb 28, 1998

Listing Removed

—

Dec 17, 1997

Listed

$259,900

$90/sq ft

Year

Property tax

Land + Additions

Assessment*

2026

$10,115 (+2.6%)

$245,100 + $439,300

$684,400

2025

$9,859 (+2.2%)

$233,500 + $413,000

$646,500

2024

$9,643 (+7.2%)

$233,500 + $405,500

$639,000

2023

$8,999 (+7.4%)

$218,900 + $356,500

$575,400

2022

$8,378 (+1.5%)

$192,500 + $294,900

$487,400

2021

$8,254 (+4.8%)

$186,200 + $282,800

$469,000

2020

$7,875 (+4.5%)

$186,200 + $266,900

$453,100

2019

$7,536 (+6.6%)

$177,700 + $238,400

$416,100

2018

$7,068 (+2.2%)

$169,300 + $209,300

$378,600

2017

$6,913 (+2.0%)

$169,300 + $209,300

$378,600

2016

$6,776 (+2.8%)

$162,800 + $198,000

$360,800

2015

$6,592 (+5.1%)

$162,800 + $198,000

$360,800

2014

$6,271 (+1.8%)

$162,800 + $198,000

$360,800

2013

$6,162 (+3.3%)

$162,800 + $202,900

$365,700

2012

$5,964 (−1.8%)

$168,000 + $202,900

$370,900

2011

$6,075 (−6.1%)

$168,000 + $202,900

$370,900

2010

$6,467 (+4.3%)

$168,300 + $241,500

$409,800

2009

$6,198

$191,300 + $241,500

$432,800

Tax history for 21 Throne Hill Rd

Year

Property tax

Land + Additions

Assessment*

2026

$10,115 (+2.6%)

$245,100 + $439,300

$684,400

2025

$9,859 (+2.2%)

$233,500 + $413,000

$646,500

2024

$9,643 (+7.2%)

$233,500 + $405,500

$639,000

2023

$8,999 (+7.4%)

$218,900 + $356,500

$575,400

2022

$8,378 (+1.5%)

$192,500 + $294,900

$487,400

2021

$8,254 (+4.8%)

$186,200 + $282,800

$469,000

2020

$7,875 (+4.5%)

$186,200 + $266,900

$453,100

2019

$7,536 (+6.6%)

$177,700 + $238,400

$416,100

2018

$7,068 (+2.2%)

$169,300 + $209,300

$378,600

2017

$6,913 (+2.0%)

$169,300 + $209,300

$378,600

2016

$6,776 (+2.8%)

$162,800 + $198,000

$360,800

2015

$6,592 (+5.1%)

$162,800 + $198,000

$360,800

2014

$6,271 (+1.8%)

$162,800 + $198,000

$360,800

2013

$6,162 (+3.3%)

$162,800 + $202,900

$365,700

2012

$5,964 (−1.8%)

$168,000 + $202,900

$370,900

2011

$6,075 (−6.1%)

$168,000 + $202,900

$370,900

2010

$6,467 (+4.3%)

$168,300 + $241,500

$409,800

2009

$6,198

$191,300 + $241,500

$432,800

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

Public record

Public record
Permits

Beds

Baths

1.5

Stories

Lot width

—

Lot depth

—

Lot size

0.92 Acres

Year renovated

—

Sq. Ft.

2,452

Year built

1984

Style

Single Family Residential

County

Middlesex County

APN

2095419S

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 30, 2026.

Property details

Parking

Parking Information
Has Garage
Has Open Parking
# of Garage Spaces: 2
# of Covered Spaces: 2
Parking Spaces: 4
AttachedGarageYN: Yes
Parking Features: Attached, Under, Garage Door Opener, Paved Drive, Paved

Interior

Master Bedroom Information
Area: 189.12
Length: 14.83
Width: 12.75
Level: Second
Features: Ceiling Fan(s),Closet,Flooring - Laminate

Bedroom #2 Information
Area: 146.25
Length: 13
Width: 11.25
Level: Second
Features: Closet,Flooring - Laminate

Bedroom #3 Information
Area: 108.69
Length: 9.25
Width: 11.75
Level: Second
Features: Closet,Flooring - Laminate

Bedroom #4 Information
Area: 141.79
Length: 13.83
Width: 10.25
Level: Second
Features: Closet,Flooring - Laminate

Bathroom Information
# of Bathrooms (Full): 2
# of Bathrooms (Half): 1
Master Bathroom Features: Yes

Bathroom #1 Information
Level: First
Features: Bathroom - Half,Flooring - Laminate

Bathroom #2 Information
Level: Second
Features: Bathroom - Full,Bathroom - With Tub & Shower,Flooring - Stone/Ceramic Tile,Countertops - Stone/Granite/Solid,Remodeled

Bathroom #3 Information
Level: Second
Features: Bathroom - Tiled With Shower Stall,Flooring - Wood,Countertops - Stone/Granite/Solid

Living Room Information
Area: 202.79
Length: 13.08
Width: 15.5
Level: First
Features: Flooring - Laminate

Family Room Information
Area: 294.48
Length: 13.75
Width: 21.42
Level: First
Features: Wood / Coal / Pellet Stove,Cathedral Ceiling(s),Ceiling Fan(s),Closet/Cabinets - Custom Built,Flooring - Wall to Wall Carpet

Dining Room Information
Area: 163.13
Length: 14.08
Width: 11.58
Level: First
Features: Flooring - Laminate

Kitchen Information
Area: 254.97
Length: 22.33
Width: 11.42
Level: First
Features: Flooring - Laminate,Dining Area,Countertops - Stone/Granite/Solid,Open Floorplan,Peninsula

Basement Information
Basement: Full, Partially Finished, Walk-Out Access, Interior Entry, Garage Access, Concrete

Laundry Information
Laundry Features: First Floor, Electric Dryer Hookup, Washer Hookup

Fireplace Information
Has Fireplace
# of Fireplaces (Total): 2

Interior Features
# of Rooms (Total): 11
Door Features: Storm Door(s), French Doors
Window Features: Skylight(s), Screens
Flooring: Tile, Vinyl, Carpet, Hardwood, Flooring - Stone/Ceramic Tile, Flooring - Vinyl
Interior Features: Ceiling Fan(s), Vaulted Ceiling(s), Wet Bar, Open Floorplan, Recessed Lighting, Storage, Closet, Closet/Cabinets - Custom Built, Sun Room, Bonus Room, Sauna/Steam/Hot Tub, Wired for Sound

Exterior

Building Information
Building Area (Total): 2,882
Foundation Details: Concrete Perimeter
Construction Materials: Frame
Year Built Source: Public Records
Year Built Details: Actual
Color: Yellow
Lead Paint: None

Exterior Features
Roof: Shingle
Patio And Porch Features: Deck - Exterior, Deck - Wood
Exterior Features: Deck - Wood, Rain Gutters, Storage, Screens

Pool Information
Spa Features: Hot Tub / Spa

Property Information
PropertySubType: Single Family Residence
Green Energy Efficient : Thermostat

Lot Information
Lot Size (Acres): 0.92
Lot Features: Wooded, Cleared, Gentle Sloping, Level
Road Frontage Type: Public

Financial

Tax Information
Tax Annual Amount: $9,643
Tax Year: 2024

Utilities

Utility Information
Utilities: for Electric Range, for Electric Oven, for Electric Dryer, Washer Hookup, Icemaker Connection
Sewer: Private Sewer
Water Source: Private
Electric: Circuit Breakers, 200+ Amp Service

Heating & Cooling
Has Heating
Heating: Baseboard, Oil, Fireplace(s)

Location

Location Information
Directions: USE GPS Sign on Property
UnparsedAddress: 21 Throne Hill Rd, 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, Highway Access, House of Worship, Private School, Public School

Public facts

Beds: 4
Baths: 1.5
Sq. Ft.: 2,452
Stories: 2.0
Lot Size: 0.92 acres
Style: Single Family Residential
Year Built: 1984
Year Renovated: —
County: Middlesex County
APN: 2095419S

Home facts updated by county records on Jul 30, 2026

Other

Miscellaneous Information
Heat Zones: 3

Listing Information
StandardStatus: Closed

Around this home

Schools

Groton Dunstable Regional Middle School

Public 5-8 • Assigned • 1.8mi

7/10

Groton-Dunstable Regional High School

Public 9-12 • Assigned • 4.0mi

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

2% 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

$794,000 – $961,000

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New listings for sale in 01450

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HOT HOME

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Home values near 21 Throne Hill Rd

Data from public records.

Address	Redfin Estimate
36 Throne Hill Rd, Groton, MA 4 Beds \| 2.5 Baths \| 2326 Sq. Ft.	$867,087
24 Throne Hill Rd, Groton, MA 4 Beds \| 2.5 Baths \| 2225 Sq. Ft.	$795,695

Address	Redfin Estimate
32 Throne Hill Rd, Groton, MA 4 Beds \| 2.5 Baths \| 1882 Sq. Ft.	$791,841
20 Throne Hill Rd, Groton, MA 4 Beds \| 2.5 Baths \| 3270 Sq. Ft.	$904,112

Address	Redfin Estimate
30 Throne Hill Rd, Groton, MA 4 Beds \| 2.5 Baths \| 2310 Sq. Ft.	$820,762
16 Throne Hill Rd, Groton, MA 4 Beds \| 2.5 Baths \| 2476 Sq. Ft.	$842,300

Property information provided by MLS PIN when last listed in 2024. This data may not match . Learn more.

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