OFF MARKET

Off market jul 2015 for $1.1M

$1,818,753

•

2,545

sq ft

23 Mason St, Lexington, MA 02421

About this home

Magnificent 2010 addition and renovation of 10 room contemporary with 5 bedrooms 3 full baths on open plan kitchen & extraordinary outdoor spaces. The house is designed by an award winning architect Walter Pierce who was famous for open floor plans, nature and strong sense of community. Great commuting location and easy access to public transportation. This fabulous home brings the outdoors into each of your very special living spaces. Incredible privacy yet momentary access to Cambridge and Boston. Numerous amenities includes A/C, spa-like Baths, oversized 2 car garages and neighborhood pool is a stones throw away!

Single-familyProperty Type

1970Year Built

0.36 acresLot Size

$715Est. Price/Sq.Ft.

2 garage spacesParking

Listed by Insung Kim • Coldwell Banker Residential Brokerage - Lexington

Bought with Insung Kim • Coldwell Banker Residential Brokerage - Lexington

Redfin checked: 2 minutes ago

•Source:MLS PIN #71830563

Redfin Estimate

$1,818,753

$637K since sold in July 2015$1,000 since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 16.1% higher than the average sale price ($1.57M) 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 MAY 15, 2026
$1,645,000
C
4 beds3.5 baths2,510 sq ft
27 Peacock Farm Rd, Lexington, MA 02421
SOLD SEP 30, 2026
$1,695,000
D
4 beds2.5 baths2,486 sq ft
20 Village Cir, Lexington, MA 02420
SOLD AUG 13, 2026
$1,480,000
E
3 beds3 baths2,007 sq ft
241 Worthen Rd E, Lexington, MA 02421
SOLD AUG 31, 2026
$1,433,000
F
4 beds3 baths2,446 sq ft
3 Watson Rd, Lexington, MA 02421

Claim this home to receive a free report every month with insights on the changing estimate.

Earn from this home

Sell

$1,017,616

Est. take-home

List your home with Redfin and save $9,094

Rent

$5,851/mo

Redfin rental estimate

List your home for rent

Market trends in 02421, MA

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

101.2%

1.2% MoM

Median sale price

$1.7M

$58K MoM

Avg. days on market

25d

3 days MoM

Recently sold homes

0 MoM

New listings for sale

OPEN SUN, 11:30AM TO 1PM
$1,299,999
3 beds1.5 baths1,751 sq ft
26 Brookside Ave, Lexington, MA 02421
OPEN SAT, 12PM TO 2PM
$2,795,000
6 beds5 baths4,560 sq ft
139 Reed St, Lexington, MA 02420
OPEN SAT, 12PM TO 1:30PM
$1,299,000
4 beds2.5 baths2,000 sq ft
21 Woodpark Cir, Lexington, MA 02421
OPEN SAT, 1:30PM TO 3PM
$1,850,000
4 beds4 baths3,287 sq ft
9 Richard Rd, Lexington, MA 02421
OPEN SAT, 2PM TO 3:30PM
$3,000,000
4 beds3.5 baths3,000 sq ft
2 Pleasant St #2, Lexington, MA 02421
OPEN SAT, 2PM TO 3:30PM
$1,800,000
2 beds2 baths1,800 sq ft
678 Massachusetts Ave #1, Lexington, MA 02421
EARLY ACCESS
$1,500,000
4 beds2 baths2,060 sq ft
20 Taft Ave, Lexington, MA 02421
OPEN SAT, 12PM TO 1PM
$1,150,000
3 beds2.5 baths2,364 sq ft
18 Middle St, Lexington, MA 02421
OPEN SAT, 12PM TO 1:30PM
$4,500,000
7 beds8 baths7,719 sq ft
14 Hastings Rd, Lexington, MA 02421
See all

Provided by Redfin

Sale history for 23 Mason St

Date

Event

Price

MLS PIN #71830563

Jul 9, 2015

Sold

$1,182,000

$464/sq ft

May 12, 2015

Pending

—

May 5, 2015

Listed

$1,090,000

$428/sq ft

MLS PIN #71059446

May 27, 2010

Sold

$669,500

$263/sq ft

Apr 13, 2010

Contingent

—

Apr 6, 2010

Listed

$699,000

$275/sq ft

Classic Contemporary in Peacock Farm neighborhood with open floor plan offering cathedral ceilings & large windows overlooking a level, lushly landscaped lot. This meticulously maintained 5-Bedroom, 3-Full bath features a separate entrance to Family room, bedroom, office & full bath, full brick hearth fireplace, handsome hardwood floors, master bedroom with private bath, full basement for storage or future expansion, neighborhood pool, close to Wilson Farm & only 15 minute commute to Harvard Sq.

Year

Property tax

Land + Additions

Assessment*

2026

$19,622 (+3.6%)

$767,000 + $827,000

$1,594,000

2025

$18,944 (+6.5%)

$730,000 + $819,000

$1,549,000

2024

$17,787 (+5.0%)

$695,000 + $757,000

$1,452,000

2023

$16,939 (+9.3%)

$632,000 + $671,000

$1,303,000

2022

$15,497 (−1.6%)

$575,000 + $548,000

$1,123,000

2021

$15,743 (+0.4%)

$547,000 + $547,000

$1,094,000

2020

$15,680 (+3.8%)

$547,000 + $569,000

$1,116,000

2019

$15,108 (+3.8%)

$521,000 + $549,000

$1,070,000

2018

$14,557 (+12.0%)

$496,000 + $522,000

$1,018,000

2017

$12,998 (+11.4%)

$468,000 + $429,000

$897,000

2016

$11,665 (+2.2%)

$446,000 + $353,000

$799,000

2014

$11,415 (+6.7%)

$365,000 + $371,000

$736,000

2013

$10,701 (+13.1%)

$353,000 + $351,000

$704,000

2012

$9,461 (+10.4%)

$346,000 + $286,000

$632,000

2011

$8,568 (+3.9%)

$353,000 + $242,000

$595,000

2010

$8,247 (+3.6%)

$353,000 + $242,000

$595,000

2009

$7,964

$372,000 + $242,000

$614,000

Tax history for 23 Mason St

Year

Property tax

Land + Additions

Assessment*

2026

$19,622 (+3.6%)

$767,000 + $827,000

$1,594,000

2025

$18,944 (+6.5%)

$730,000 + $819,000

$1,549,000

2024

$17,787 (+5.0%)

$695,000 + $757,000

$1,452,000

2023

$16,939 (+9.3%)

$632,000 + $671,000

$1,303,000

2022

$15,497 (−1.6%)

$575,000 + $548,000

$1,123,000

2021

$15,743 (+0.4%)

$547,000 + $547,000

$1,094,000

2020

$15,680 (+3.8%)

$547,000 + $569,000

$1,116,000

2019

$15,108 (+3.8%)

$521,000 + $549,000

$1,070,000

2018

$14,557 (+12.0%)

$496,000 + $522,000

$1,018,000

2017

$12,998 (+11.4%)

$468,000 + $429,000

$897,000

2016

$11,665 (+2.2%)

$446,000 + $353,000

$799,000

2014

$11,415 (+6.7%)

$365,000 + $371,000

$736,000

2013

$10,701 (+13.1%)

$353,000 + $351,000

$704,000

2012

$9,461 (+10.4%)

$346,000 + $286,000

$632,000

2011

$8,568 (+3.9%)

$353,000 + $242,000

$595,000

2010

$8,247 (+3.6%)

$353,000 + $242,000

$595,000

2009

$7,964

$372,000 + $242,000

$614,000

*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

0.36 Acres

Year renovated

—

Sq. Ft.

2,578

Year built

1970

Style

Single Family Residential

County

Middlesex County

APN

3664509S

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Sep 11, 2026.

Property details

Parking

Parking Information
Has Garage
Has Open Parking
# of Garage Spaces: 2
# of Covered Spaces: 2
Parking Spaces: 8
AttachedGarageYN: Yes
Parking Features: Attached, Paved Drive, Off Street

Interior

Master Bedroom Information
Area: 154
Length: 14
Width: 11
Level: Third
Features: Bathroom - Full,Walk-In Closet(s),Closet,Flooring - Hardwood

Bedroom #2 Information
Area: 132
Length: 12
Width: 11
Level: Third
Features: Closet,Flooring - Hardwood

Bedroom #3 Information
Area: 99
Length: 11
Width: 9
Level: Third
Features: Closet,Flooring - Hardwood

Bedroom #4 Information
Area: 144
Length: 12
Width: 12
Level: First
Features: Closet,Flooring - Wood

Bedroom #5 Information
Area: 99
Length: 11
Width: 9
Level: First
Features: Closet,Flooring - Wood

Bathroom Information
# of Bathrooms (Full): 3
Master Bathroom Features: Yes

Bathroom #1 Information
Area: 143
Length: 11
Width: 13
Level: First
Features: Bathroom - Full,Flooring - Stone/Ceramic Tile

Bathroom #2 Information
Level: Third
Features: Bathroom - Full,Bathroom - Tiled With Tub,Bathroom - With Shower Stall,Flooring - Stone/Ceramic Tile,Countertops - Stone/Granite/Solid

Bathroom #3 Information
Level: Third
Features: Skylight,Flooring - Stone/Ceramic Tile

Living Room Information
Area: 304
Length: 19
Width: 16
Level: Second
Features: Cathedral Ceiling(s),Flooring - Hardwood,Window(s) - Picture,Recessed Lighting

Family Room Information
Area: 247
Length: 19
Width: 13
Level: First
Features: Flooring - Wood

Dining Room Information
Area: 99
Length: 11
Width: 9
Level: Second
Features: Cathedral Ceiling(s),Flooring - Hardwood,Window(s) - Picture

Kitchen Information
Area: 126
Length: 14
Width: 9
Level: Second
Features: Flooring - Hardwood,Window(s) - Picture,Countertops - Stone/Granite/Solid,Kitchen Island

Basement Information
Basement: Partial, Finished

Laundry Information
Laundry Features: In Basement, Electric Dryer Hookup, Washer Hookup

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

Interior Features
# of Rooms (Total): 10
Door Features: Insulated Doors
Window Features: Insulated Windows, Storm Window(s)
Flooring: Tile, Carpet, Hardwood, Flooring - Wall to Wall Carpet
Interior Features: Recessed Lighting, Play Room

Exterior

Building Information
Building Area (Total): 2,545
Foundation Details: Concrete Perimeter
Construction Materials: Frame
Year Built Source: Public Records
Year Built Details: Actual,Renovated Since
Color: Cream

Exterior Features
Roof: Tar/Gravel, Rubber
Patio And Porch Features: Deck, Patio
Exterior Features: Deck, Patio, Storage

Property Information
PropertySubType: Single Family Residence

Lot Information
Lot Size (Acres): 0.36
Lot Features: Wooded
Road Surface Type: Paved

Financial

Tax Information
Tax Annual Amount: $11,278
Tax Year: 2015

Utilities

Utility Information
Utilities: for Electric Range, for Electric Oven, for Electric Dryer, Washer Hookup, Icemaker Connection
Sewer: Public Sewer
Water Source: Public
Electric: Circuit Breakers

Heating & Cooling
Has Heating
Has Cooling
Heating: Baseboard, Oil
Cooling: Central Air

Location

Location Information
Directions: Pleasant st to Mason st
UnparsedAddress: 23 Mason St, Lexington MA 02421

Community Information
Senior CommunityYN: No
Community Features: Public Transportation, Pool, Walk/Jog Trails, Bike Path, Highway Access

Public facts

Beds: 5
Baths: 3.0
Sq. Ft.: 2,578
Stories: 1.0
Lot Size: 0.36 acres
Style: Single Family Residential
Year Built: 1970
Year Renovated: —
County: Middlesex County
APN: 3664509S

Home facts updated by county records on Sep 10, 2026

Other

Miscellaneous Information
Heat Zones: 4

Listing Information
StandardStatus: Closed

Around this home

Schools

Bowman Elementary School

Public K-5 • Assigned • 0.6mi

10/10

Jonas Clarke Middle School

Public 6-8 • Assigned • 1.2mi

10/10

Lexington High School

Public 9-12 • Assigned • 1.9mi

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 weeks ago • Lexington
Benjamin Ginsburg
Redfin Premier agent
155 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

53% 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

$1.73M – $2.09M

Reach more buyers when you sell with Redfin. Save up to $18,188 in fees. 3 minutes to get started.

Need the cash from your home fast? Sell to .

Nearby similar homes

OPEN SUN, 11:30AM TO 1PM

$1,299,999

3 beds1.5 baths1,751 sq ft

26 Brookside Ave, Lexington, MA 02421

$3,200,000

6 beds5.5 baths6,796 sq ft

292 Waltham St, Lexington, MA 02421

$4,780,000

6 beds6.5 baths8,000 sq ft

15 John Poulter Rd, Lexington, MA 02421

3D WALKTHROUGH

$699,900

3 beds1.5 baths1,058 sq ft

233 Florence Ave, Arlington, MA 02476

$1,495,000

3 beds2.5 baths3,254 sq ft

12 Middle St, Lexington, MA 02421

OPEN SUN, 1:30PM TO 3PM3D WALKTHROUGH

$1,098,000

4 beds2.5 baths2,526 sq ft

5 Maple St, Lexington, MA 02420

New listings for sale in 02421

OPEN SUN, 11:30AM TO 1PM

$1,299,999

3 beds1.5 baths1,751 sq ft

26 Brookside Ave, Lexington, MA 02421

OPEN SAT, 12PM TO 2PM

$2,795,000

6 beds5 baths4,560 sq ft

139 Reed St, Lexington, MA 02420

OPEN SAT, 12PM TO 1:30PM

$1,299,000

4 beds2.5 baths2,000 sq ft

21 Woodpark Cir, Lexington, MA 02421

OPEN SAT, 1:30PM TO 3PM

$1,850,000

4 beds4 baths3,287 sq ft

9 Richard Rd, Lexington, MA 02421

OPEN SAT, 2PM TO 3:30PM

$3,000,000

4 beds3.5 baths3,000 sq ft

2 Pleasant St #2, Lexington, MA 02421

OPEN SAT, 2PM TO 3:30PM

$1,800,000

2 beds2 baths1,800 sq ft

678 Massachusetts Ave #1, Lexington, MA 02421

EARLY ACCESSCOLDWELL BANKER REALTY COMING SOON

$1,500,000

4 beds2 baths2,060 sq ft

20 Taft Ave, Lexington, MA 02421

OPEN SAT, 12PM TO 1PM3D WALKTHROUGH

$1,150,000

3 beds2.5 baths2,364 sq ft

18 Middle St, Lexington, MA 02421

OPEN SAT, 12PM TO 1:30PM

$4,500,000

7 beds8 baths7,719 sq ft

14 Hastings Rd, Lexington, MA 02421

Home values near 23 Mason St

Data from public records.

Address	Redfin Estimate
24 Mason St, Lexington, MA 5 Beds \| 3 Baths \| 1326 Sq. Ft.	$1,362,293
18 Mason St, Lexington, MA 5 Beds \| 2.5 Baths \| 2124 Sq. Ft.	$1,478,945

Address	Redfin Estimate
22 Mason St, Lexington, MA 5 Beds \| 2.5 Baths \| 1326 Sq. Ft.	$1,424,333
15 Mason St, Lexington, MA 5 Beds \| 2.5 Baths \| 1976 Sq. Ft.	$1,342,625

Address	Redfin Estimate
20 Mason St, Lexington, MA 5 Beds \| 3 Baths \| 2040 Sq. Ft.	$1,525,569
19 Mason St, Lexington, MA 3 Beds \| 2 Baths \| 1732 Sq. Ft.	$1,236,865

Property information provided by MLS PIN when last listed in 2015. This data may not match . Learn more.

Download the Redfin App on the Apple App Store

Download the Redfin App from the Google Play Store

Join us

Become an Agent

Get referrals

Careers

Find homes faster

About us

Find us

Subsidiaries

Affiliated Business

Countries

United States

Canada

Updated September 2025: By searching, you agree to the Terms of Use, and Privacy Policy.

Do not sell or share my personal information.

REDFIN and all REDFIN variants, WALK SCORE, and the R logos, are trademarks of Redfin Corporation, registered or pending in the USPTO.

California DRE #01521930

Redfin is licensed to do business in New York as Redfin Real Estate. NY Standard Operating Procedures

New Mexico Real Estate Licenses

TREC: Info About Brokerage Services, Consumer Protection Notice

All mortgage lending products and information are provided by Rocket Mortgage, LLC | NMLS #3030; www.NMLSConsumerAccess.org. Licensed in 50 states. This site is not authorized by the New York State Department of Financial Services for mortgage solicitation or loan applications activities related to properties located in the State of New York.

Redfin Corporation is an affiliated business of Rocket Limited Partnership. Each company, and their subsidiaries, are separate legal entities operated and managed through its own management and governance structures.

If you are using a screen reader, or having trouble reading this website, please call Redfin Customer Support for help at 1-844-759-7732.

REDFIN IS COMMITTED TO AND ABIDES BY THE FAIR HOUSING ACT AND EQUAL OPPORTUNITY ACT. READ REDFIN'S FAIR HOUSING POLICY AND THE NEW YORK STATE FAIR HOUSING NOTICE.

GreatSchools Ratings provided by GreatSchools.org.

01730 homes for sale
02474 homes for sale
01890 homes for sale
01801 homes for sale
01803 homes for sale

Houses for rent in Lexington	Agents near me	Quincy, MA homes for sale	Lexington Housing Market
Houses for sale near me	Boston, MA homes for sale	Brookline, MA homes for sale
Land for sale near me	Newton, MA homes for sale	Arlington, MA homes for sale
Open Houses near me	Cambridge, MA homes for sale	Lexington Property Records
Condos for sale near me	Lexington, MA homes for sale	MA New Listings

Cambridge homes for sale
Boston homes for sale
Newton homes for sale

About this home

Redfin Estimate

Earn from this home

Market trends in 02421, MA

Sale history for 23 Mason St

Tax history for 23 Mason 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 23 Mason St

More real estate resources