Off Market Aug 2007 for $739K

$1,466,420

Est. refi paymentEst. refi $3,493/mo

•

2,146

sq ft

21 Walnut St, Lexington, MA 02421

About this home

Single-familyProperty Type

1963Year Built

0.84 acresLot Size

$683Est. Price/Sq.Ft.

2 garage spacesParking

Listed by Judith Alexander • Coldwell Banker Residential Brokerage - Lexington

Bought with Joyce Friedgen • ERA Morrison Real Estate

Redfin checked: 2 minutes ago

•Source:MLS PIN #70580309

Redfin Estimate

$1,466,420

$727K since sold in August 2007$28K since July

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 0.9% lower than the average sale price ($1.48M) of 6 comparable homes.

SOLD JUL 28, 2026
$1,450,000
A
4 beds3 baths2,148 sq ft
42 Peacock Farm Rd, Lexington, MA 02421
SOLD JUL 2, 2026
$1,700,000
B
4 beds2.5 baths2,240 sq ft
3 Compton Cir, Lexington, MA 02421
SOLD AUG 13, 2026
$1,480,000
C
3 beds3 baths2,007 sq ft
241 Worthen Rd E, Lexington, MA 02421
SOLD MAY 8, 2026
$1,970,000
D
4 beds3 baths2,220 sq ft
32 Moon Hill Rd, Lexington, MA 02421
SOLD SEP 10, 2025
$1,230,000
E
4 beds3 baths2,256 sq ft
60 Allen St, Lexington, MA 02421
SOLD JUL 10, 2026
$1,050,000
F
3 beds2 baths2,330 sq ft
780 Waltham St, Lexington, MA 02421

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Earn from this home

Sell

$1,092,744

Est. take-home

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Est. cash available

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Rent

$4,069/mo

Redfin rental estimate

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Market trends in 02421, MA

Last updated July 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

102.4%

0.7% MoM

Median sale price

$1.7M

$12K MoM

Avg. days on market

22d

3 days MoM

Recently sold homes

26 MoM

New listings for sale

EARLY ACCESS
$889,000
3 beds2 baths2,682 sq ft
12 Watertown St, Lexington, MA 02421
OPEN TODAY, 5PM TO 7PM
$1,389,000
4 beds3 baths2,392 sq ft
184 Concord Ave, Lexington, MA 02421
OPEN SAT, 1PM TO 3PM
$2,850,000
5 beds4 baths5,024 sq ft
209 Waltham St, Lexington, MA 02421
OPEN SAT, 1PM TO 2:30PM
$2,395,000
4 beds4.5 baths4,376 sq ft
171 Lincoln St, Lexington, MA 02421
OPEN SUN, 10AM TO 11AM
$989,000
3 beds1.5 baths1,372 sq ft
1 Constitution Rd, Lexington, MA 02421
See all

Provided by Redfin

Sale history for 21 Walnut St

Year

Property tax

Land + Additions

Assessment*

2026

$16,742 (+4.1%)

$846,000 + $514,000

$1,360,000

2025

$16,082 (+4.9%)

$806,000 + $509,000

$1,315,000

2024

$15,325 (+4.6%)

$767,000 + $484,000

$1,251,000

2023

$14,651 (+7.7%)

$698,000 + $429,000

$1,127,000

2022

$13,607

$635,000 + $351,000

$986,000

2021

$13,613 (+0.9%)

$605,000 + $341,000

$946,000

2020

$13,488 (+2.9%)

$605,000 + $355,000

$960,000

2019

$13,103 (+3.7%)

$576,000 + $352,000

$928,000

2018

$12,641 (+4.0%)

$549,000 + $335,000

$884,000

2017

$12,157 (+5.7%)

$523,000 + $316,000

$839,000

2016

$11,505 (+10.9%)

$499,000 + $289,000

$788,000

2014

$10,376 (+4.2%)

$412,000 + $257,000

$669,000

2013

$9,956 (+2.6%)

$412,000 + $243,000

$655,000

2012

$9,701 (+2.7%)

$412,000 + $236,000

$648,000

2011

$9,446 (+3.9%)

$411,000 + $245,000

$656,000

2010

$9,092 (+2.0%)

$411,000 + $245,000

$656,000

2009

$8,910

$432,000 + $255,000

$687,000

Tax history for 21 Walnut St

Year

Property tax

Land + Additions

Assessment*

2026

$16,742 (+4.1%)

$846,000 + $514,000

$1,360,000

2025

$16,082 (+4.9%)

$806,000 + $509,000

$1,315,000

2024

$15,325 (+4.6%)

$767,000 + $484,000

$1,251,000

2023

$14,651 (+7.7%)

$698,000 + $429,000

$1,127,000

2022

$13,607

$635,000 + $351,000

$986,000

2021

$13,613 (+0.9%)

$605,000 + $341,000

$946,000

2020

$13,488 (+2.9%)

$605,000 + $355,000

$960,000

2019

$13,103 (+3.7%)

$576,000 + $352,000

$928,000

2018

$12,641 (+4.0%)

$549,000 + $335,000

$884,000

2017

$12,157 (+5.7%)

$523,000 + $316,000

$839,000

2016

$11,505 (+10.9%)

$499,000 + $289,000

$788,000

2014

$10,376 (+4.2%)

$412,000 + $257,000

$669,000

2013

$9,956 (+2.6%)

$412,000 + $243,000

$655,000

2012

$9,701 (+2.7%)

$412,000 + $236,000

$648,000

2011

$9,446 (+3.9%)

$411,000 + $245,000

$656,000

2010

$9,092 (+2.0%)

$411,000 + $245,000

$656,000

2009

$8,910

$432,000 + $255,000

$687,000

*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

2.5

Stories

Lot width

—

Lot depth

—

Lot size

0.85 Acres

Year renovated

—

Sq. Ft.

1,600

Year built

1963

Style

Single Family Residential

County

Middlesex County

APN

1870412S

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: 12
AttachedGarageYN: Yes
Parking Features: Under, Garage Door Opener, Storage, Paved Drive, Off Street

Interior

Master Bedroom Information
Area: 169
Length: 13
Width: 13
Level: First

Bedroom #2 Information
Area: 130
Length: 13
Width: 10
Level: First

Bedroom #3 Information
Area: 130
Length: 13
Width: 10
Level: First

Bedroom #4 Information
Area: 144
Length: 12
Width: 12
Level: Basement

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

Bathroom #1 Information
Area: 60
Length: 10
Width: 6
Level: First

Bathroom #2 Information
Area: 50
Length: 10
Width: 5
Level: First

Bathroom #3 Information
Area: 24
Length: 6
Width: 4
Level: Basement

Living Room Information
Area: 260
Length: 26
Width: 10
Level: First

Family Room Information
Area: 300
Length: 25
Width: 12
Level: Basement

Dining Room Information
Area: 169
Length: 13
Width: 13
Level: First

Kitchen Information
Area: 156
Length: 13
Width: 12
Level: First

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

Laundry Information
Laundry Dimen: 13X8
Laundry Features: First Floor, Electric Dryer Hookup, Washer Hookup

Fireplace Information
Has Fireplace
# of Fireplaces (Total): 1
Fireplace Features: Living Room

Interior Features
# of Rooms (Total): 9
Door Features: Storm Door(s)
Window Features: Insulated Windows, Screens
Flooring: Wood, Tile, Carpet

Exterior

Building Information
Building Area (Total): 2,146
Foundation Details: Concrete Perimeter
Construction Materials: Frame
Year Built Source: Public Records
Year Built Details: Actual
Color: Lt . Mocha
Lead Paint: None

Exterior Features
Roof: Rubber
Patio And Porch Features: Deck
Exterior Features: Deck, Rain Gutters, Storage, Decorative Lighting, Screens

Property Information
Accessibility Features: Accessible Entrance
PropertySubType: Single Family Residence

Lot Information
Lot Size (Acres): 0.84
Lot Features: Wooded
Frontage Length: 150
Road Surface Type: Paved
Road Frontage Type: Public
Road Responsibility: Public Maintained Road

Financial

Tax Information
Tax Annual Amount: $8,641
Tax Year: 2007

Utilities

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

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

Location

HOA Information
Homeowners Association Membership Not Required

Location Information
Directions: Concord Avenue (dir. Belmont) to Walnut Street
UnparsedAddress: 21 Walnut Street, Lexington MA 02421

Community Information
Senior CommunityYN: No
Community Features: Public Transportation, Shopping, Park, Walk/Jog Trails

Public facts

Beds: 3
Baths: 2.5
Sq. Ft.: 1,600
Stories: 1.0
Lot Size: 0.85 acres
Style: Single Family Residential
Year Built: 1963
Year Renovated: —
County: Middlesex County
APN: 1870412S

Home facts updated by county records on Jul 30, 2026

Other

Miscellaneous Information
Heat Zones: 2

Listing Information
Exclusions: Refrigerator And Washer/Dryer.
StandardStatus: Closed

Around this home

Schools

Bowman Elementary School

Public K-5 • Assigned • 0.7mi

10/10

Jonas Clarke Middle School

Public 6-8 • Assigned • 1.2mi

10/10

Lexington High School

Public 9-12 • Assigned • 2.1mi

10/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

Lexington continues to be a competitive Seller's market driven by its historic appeal & location. With buildable land exhausted, true inventory growth is very constrained; development mostly replaces existing homes. New zoning laws will eventually...
2 months ago • Lexington
Benjamin Ginsburg
Redfin Premier agent
151 deals
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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, 14 days in 30 years

6/10 Wind Factor

50% 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

Lexington, MA • 02421

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

$1.39M – $1.69M

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Home values near 21 Walnut St

Data from public records.

Address	Redfin Estimate
35 Walnut Street, Lexington, MA 4 Beds \| 2.5 Baths \| 3824 Sq. Ft.	$2,191,919
20 Walnut Street, Lexington, MA 5 Beds \| 4.5 Baths \| 6982 Sq. Ft.	$2,619,915

Address	Redfin Estimate
7 Walnut Street, Lexington, MA 3 Beds \| 1.5 Baths \| 1530 Sq. Ft.	$1,128,729
18 Walnut Street, Lexington, MA 5 Beds \| 5 Baths \| 6074 Sq. Ft.	$3,108,768

Address	Redfin Estimate
11 Walnut Street, Lexington, MA 5 Beds \| 5.5 Baths \| 5052 Sq. Ft.	$2,538,850
14 Walnut Street, Lexington, MA 4 Beds \| 3 Baths \| 2535 Sq. Ft.	$1,788,505

Property information provided by MLS PIN when last listed in 2007. This data may not match . Learn more.

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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 02421, MA

Sale history for 21 Walnut St

Tax history for 21 Walnut St

Public record

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 02421

Home values near 21 Walnut St

More real estate resources