OFF MARKET

Off market mar 2014 for $175K

$357,461

•

1,218

sq ft

509 Main St Unit B, Groton, MA 01450

About this home

CondoProperty Type

2006Year Built

$293Est. Price/Sq.Ft.

2 spacesParking

Listed by Diane Perlack Lareau • RE/MAX Prestige

Bought with George Silvestri • George A. Silvestri

Redfin checked: a few seconds ago

•Source:MLS PIN #71626435

Redfin Estimate

$357,461

$182K since sold in March 2014$23K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 18.3% lower than the average sale price ($438K) of 6 comparable homes.

SOLD OCT 14, 2026
$590,000
A
2 beds2 baths1,305 sq ft
307 Autumn Ridge Dr #307, Ayer, MA 01432
SOLD JUL 31, 2026
$590,000
B
2 beds2 baths1,318 sq ft
606 Autumn Ridge Dr #606, Ayer, MA 01432
SOLD MAY 6, 2026
$425,000
C
2 beds2 baths1,092 sq ft
519 Main St Unit D, Groton, MA 01450
SOLD AUG 24, 2026
$420,000
D
2 beds1.5 baths1,404 sq ft
26 Bradley Dr Unit C, Groton, MA 01450
SOLD JAN 30, 2026
$199,700
E
2 beds2 baths1,092 sq ft
521 Main St Unit D, Groton, MA 01450
SOLD OCT 2, 2026
$402,000
F
2 beds1.5 baths1,080 sq ft
55 Littleton Rd Unit 11B, Ayer, MA 01432

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Earn from this home

Sell

$238,745

Est. take-home

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Rent

$2,285/mo

Redfin rental estimate

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Market trends in 01450, MA

Last updated October 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

100.5%

+0.4% MoM

Median sale price

$851K

$24K MoM

Avg. days on market

27d

0 days MoM

Recently sold homes

11 MoM

New listings for sale

OPEN TODAY, 1:30PM TO 3PM
$505,000
3 beds1 bath1,112 sq ft
26 Forge Village Rd, Groton, MA 01450
OPEN TODAY, 10:30AM TO 12:30PM
$450,000
2 beds1 bath1,188 sq ft
177 Hollis St, Groton, MA 01450
OPEN TODAY, 11AM TO 1PM
$489,900
3 beds2 baths1,736 sq ft
9 Valley Rd, Groton, MA 01450
See all

Provided by Redfin

Sale history for 509 Main St Unit B

Date

Event

Price

MLS PIN #71626435

Mar 18, 2014

Sold

$175,000

$144/sq ft

Feb 12, 2014

Contingent

—

Jan 25, 2014

Listed

$188,000

$154/sq ft

MLS PIN #71040687

Apr 29, 2010

Sold

$169,900

$139/sq ft

Mar 5, 2010

Contingent

—

Mar 3, 2010

Listed

$169,900

$139/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$5,284 (+22.9%)

$346,500

2024

$4,301 (+0.5%)

$285,000

2023

$4,278 (+4.0%)

$273,500

2022

$4,114 (−1.7%)

$239,300

2021

$4,187 (+21.3%)

$237,900

2020

$3,452 (+12.6%)

$198,600

2019

$3,066 (−3.0%)

$169,300

2018

$3,161 (+2.3%)

$169,300

2017

$3,091 (−5.8%)

$169,300

2016

$3,283 (+5.0%)

$174,800

2015

$3,128 (+5.1%)

$171,200

2014

$2,975 (+3.1%)

$171,200

2013

$2,885 (+4.8%)

$171,200

2012

$2,753 (+3.4%)

$171,200

2011

$2,662 (−11.0%)

$162,500

2010

$2,990 (−27.5%)

$189,500

2009

$4,126

$288,100

Tax history for 509 Main St Unit B

Year

Property tax

Land + Additions

Assessment*

2025

$5,284 (+22.9%)

$346,500

2024

$4,301 (+0.5%)

$285,000

2023

$4,278 (+4.0%)

$273,500

2022

$4,114 (−1.7%)

$239,300

2021

$4,187 (+21.3%)

$237,900

2020

$3,452 (+12.6%)

$198,600

2019

$3,066 (−3.0%)

$169,300

2018

$3,161 (+2.3%)

$169,300

2017

$3,091 (−5.8%)

$169,300

2016

$3,283 (+5.0%)

$174,800

2015

$3,128 (+5.1%)

$171,200

2014

$2,975 (+3.1%)

$171,200

2013

$2,885 (+4.8%)

$171,200

2012

$2,753 (+3.4%)

$171,200

2011

$2,662 (−11.0%)

$162,500

2010

$2,990 (−27.5%)

$189,500

2009

$4,126

$288,100

*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

—

Year renovated

—

Sq. Ft.

1,218

Year built

2006

Style

Condo/Co-op

County

Middlesex County

APN

4681852

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 16, 2026.

Property details

Parking

Parking Information
Parking Spaces: 2
Parking Features: Off Street

Interior

Master Bedroom Information
Area: 192
Length: 16
Width: 12
Level: First
Features: Bathroom - Full,Walk-In Closet(s),Flooring - Wall to Wall Carpet,Deck - Exterior

Bedroom #2 Information
Area: 156
Length: 13
Width: 12
Level: First
Features: Walk-In Closet(s),Flooring - Wall to Wall Carpet

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

Bathroom #1 Information
Level: First
Features: Bathroom - Full,Bathroom - With Tub & Shower,Flooring - Vinyl

Bathroom #2 Information
Level: First
Features: Bathroom - Double Vanity/Sink,Flooring - Vinyl

Living Room Information
Area: 224
Length: 16
Width: 14
Level: First
Features: Flooring - Wall to Wall Carpet,Open Floorplan

Dining Room Information
Area: 110
Length: 11
Width: 10
Level: First
Features: Flooring - Laminate,Breakfast Bar / Nook

Kitchen Information
Area: 100
Length: 10
Width: 10
Level: First
Features: Flooring - Vinyl,Countertops - Stone/Granite/Solid

Basement Information
Basement: N

Laundry Information
Laundry Features: First Floor, In Unit

Interior Features
# of Rooms (Total): 5
Flooring: Vinyl, Carpet

Exterior

Building Information
Building Area (Total): 1,218
Construction Materials: Frame
StructureType: Garden
Stories (Total): 1
Year Built Source: Public Records
Year Built Details: Actual

Exterior Features
Roof: Shingle
Patio And Porch Features: Covered
Exterior Features: Covered Patio/Deck

Property Information
PropertySubType: Condominium
Entry Level: 1

Financial

Tax Information
Tax Annual Amount: $2,885
Tax Year: 2013

Utilities

Utility Information
Sewer: Public Sewer
Water Source: Public
Electric: Circuit Breakers

Heating & Cooling
Has Heating
Has Cooling
Heating: Forced Air, Natural Gas
Cooling: Central Air

Location

HOA Information
Association Fee: $210
Association Fee Frequency: Monthly
Association Fee Includes: Insurance, Maintenance Structure, Road Maintenance, Maintenance Grounds, Snow Removal, Trash

Location Information
Directions: Route 119/Main St
UnparsedAddress: 509 Main St # B, Groton MA 01450

Community Information
Senior CommunityYN: No
Pets Allowed: Yes w/ Restrictions

Public facts

Beds: 2
Baths: 2.0
Sq. Ft.: 1,218
Stories: 1.0
Lot Size: —
Style: Condo/Co-op
Year Built: 2006
Year Renovated: —
County: Middlesex County
APN: 4681852

Home facts updated by county records on Jul 16, 2026

Other

Listing Information
StandardStatus: Closed

Around this home

Schools

K - 12
Preschool & daycare

Groton Dunstable Regional Middle School

Public 5-8 • Assigned • 0.6mi

7/10

Groton-Dunstable Regional High School

Public 9-12 • Assigned • 3.1mi

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

1% chance of being in a wildfire in next 30 years

4/10 Heat Factor

7 days above 96° expected this year, 16 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

$340,000 – $412,000

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Home values near 509 Main St Unit B

Data from public records.

Address	Redfin Estimate
515 Main St Apt B, Groton, MA 2 Beds \| 2 Baths \| 1044 Sq. Ft.	$308,401
521 Main St Apt B, Groton, MA 2 Beds \| 2 Baths \| 1054 Sq. Ft.	$350,939
517 Main St Apt B, Groton, MA 3 Beds \| 2 Baths \| 1412 Sq. Ft.	$451,536
515 Main St Apt A, Groton, MA 3 Beds \| 2 Baths \| 1446 Sq. Ft.	$460,087
509 Main St Apt A, Groton, MA 2 Beds \| 2 Baths \| 1032 Sq. Ft.	$264,155
521 Main St Apt B, Groton, MA 2 Beds \| 2 Baths \| 1032 Sq. Ft.	$420,629
517 Main St Apt A, Groton, MA 2 Beds \| 2 Baths \| 1032 Sq. Ft.	$266,430

Address	Redfin Estimate
517 Main St Apt A, Groton, MA 2 Beds \| 2 Baths \| 1118 Sq. Ft.	$275,760
521 Main St Apt C, Groton, MA 2 Beds \| 2 Baths \| 1092 Sq. Ft.	$371,445
517 Main St Apt C, Groton, MA 2 Beds \| 2 Baths \| 1164 Sq. Ft.	$417,462
515 Main St Apt C, Groton, MA 2 Beds \| 2 Baths \| 1092 Sq. Ft.	$415,733
509 Main St Apt C, Groton, MA 2 Beds \| 2 Baths \| 1097 Sq. Ft.	$378,503
517 Main St Apt B, Groton, MA 3 Beds \| 2 Baths \| 1412 Sq. Ft.	$492,620
515 Main St Apt A, Groton, MA 3 Beds \| 2 Baths \| 1446 Sq. Ft.	$497,943

Address	Redfin Estimate
521 Main St Apt A, Groton, MA 2 Beds \| 2 Baths \| 1218 Sq. Ft.	$409,977
521 Main St Apt D, Groton, MA 2 Beds \| 2 Baths \| 1092 Sq. Ft.	$345,632
517 Main St Apt D, Groton, MA 2 Beds \| 2 Baths \| 1097 Sq. Ft.	$359,729
515 Main St Apt D, Groton, MA 2 Beds \| 2 Baths \| 1092 Sq. Ft.	$258,914
509 Main St Apt D, Groton, MA 2 Beds \| 2 Baths \| 1092 Sq. Ft.	$365,139
517 Main St Apt C, Groton, MA 2 Beds \| 2 Baths \| 1092 Sq. Ft.	$422,281
521 Main St Apt D, Groton, MA 2 Beds \| 2.5 Baths \| 1092 Sq. Ft.	$256,099

Property information provided by MLS PIN when last listed in 2014. This data may not match . Learn more.

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