Off Market Jun 2016 for $952K

$1,527,388

Est. refi paymentEst. refi $2,714/mo

•

2,040

sq ft

20 Mason St, Lexington, MA 02421

About this home

Mid-Century Modern oasis. Award winning architect Walter Pierce’s design in purist form, tranquilly nestled in a vibrant natural setting and lovingly cared for. A 2002 stone-floored entry and screened porch addition extends the pristine interior into a gently sloping woodland, embracing visitors as they approach by granite steps and sheltering perennials, to be greeted by abundant sunlight views opening from walls of glass in every room. The home's flexible, flowing floor plan offers bedrooms and baths on separate levels, soaring ceilings, a tiled master bath, fireplace and hardwood floors. An expansive multipurpose office/family/exercise room and a stone patio add to its ability to entertain and enrich life at home. New roof (2009), tile flooring (2010/16), a ductless AC (2012), plus fresh interior and exterior paint. Located across from the neighborhood pool entrance, near Wilson Farm, minutes to Lexington center, with easy access to commuting routes to Alewife, Cambridge and Boston.

Single-familyProperty Type

1967Year Built

0.37 acresLot Size

$749Est. Price/Sq.Ft.

3 spacesParking

Listed by Jewett Mathewson • William Raveis R.E. & Home Services

Bought with Anne Spry • Waterfield Sotheby's International Realty

Redfin checked: 2 minutes ago

•Source:MLS PIN #71984320

Redfin Estimate

$1,527,388

$575K since sold in June 2016$14K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 5.3% lower than the average sale price ($1.61M) 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 MAY 15, 2026
$1,645,000
E
4 beds3.5 baths2,510 sq ft
27 Peacock Farm Rd, Lexington, MA 02421
SOLD AUG 31, 2026
$1,433,000
F
4 beds3 baths2,446 sq ft
3 Watson Rd, Lexington, MA 02421

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Earn from this home

Sell

$858,691

Est. take-home

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Est. cash available

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Rent

$4,313/mo

Redfin rental estimate

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Market trends in 02421, MA

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

101.2%

1.2% MoM

Median sale price

$1.7M

$57K MoM

Avg. days on market

25d

3 days MoM

Recently sold homes

2 MoM

New listings for sale

OPEN SUN, 11AM TO 1PM
$900,000
3 beds2 baths1,580 sq ft
28 Middle St, Lexington, MA 02421
OPEN SUN, 1PM TO 3PM
$1,075,000
4 beds2 baths2,042 sq ft
6 Brookside Ave, Lexington, MA 02421
OPEN SUN, 1PM TO 2:30PM
$1,480,000
4 beds3 baths3,240 sq ft
29 Patterson Rd, Lexington, MA 02421
OPEN SUN, 12:30PM TO 2PM
$1,999,000
4 beds3.5 baths3,600 sq ft
42 Winthrop Rd, Lexington, MA 02421
OPEN SUN, 11AM TO 12:30PM
$998,000
3 beds2 baths2,016 sq ft
12 Watertown St, Lexington, MA 02421
OPEN SUN, 11AM TO 12:30PM
$1,098,000
3 beds2.5 baths2,140 sq ft
310 Concord Ave, Lexington, MA 02421
OPEN SUN, 11:30AM TO 1PM
$749,900
3 beds1 bath950 sq ft
30 Harbell St, Lexington, MA 02321
OPEN SUN, 11AM TO 12:30PM
$1,850,000
5 beds4 baths3,981 sq ft
32 Webster Rd, Lexington, MA 02421
OPEN SUN, 3PM TO 4:30PM
$1,425,000
3 beds2.5 baths1,976 sq ft
36 Journeys End Ln #36, Lexington, MA 02421
$1,379,000
4 beds3.5 baths3,157 sq ft
438 Waltham St, Lexington, MA 02421
See all

Provided by Redfin

Sale history for 20 Mason St

Date

Event

Price

MLS PIN #71984320

Jun 2, 2016

Sold

$952,000

$467/sq ft

Apr 13, 2016

Pending

—

Apr 7, 2016

Listed

$860,000

$422/sq ft

MLS PIN #30344223

Oct 15, 1999

Sold

$415,000

$203/sq ft

Sep 13, 1999

Listing Removed

—

Aug 6, 1999

Listed

$415,000

$203/sq ft

Public Records

Jul 1, 1967

Sold

$10,000

$5/sq ft

Year

Property tax

Land + Additions

Assessment*

2026

$15,905 (+4.0%)

$768,000 + $524,000

$1,292,000

2025

$15,288 (+3.1%)

$731,000 + $519,000

$1,250,000

2024

$14,835 (+3.6%)

$696,000 + $515,000

$1,211,000

2023

$14,326 (+10.6%)

$633,000 + $469,000

$1,102,000

2022

$12,958 (−0.2%)

$575,000 + $364,000

$939,000

2021

$12,980 (+0.9%)

$548,000 + $354,000

$902,000

2020

$12,870 (+3.8%)

$548,000 + $368,000

$916,000

2019

$12,397 (+2.7%)

$522,000 + $356,000

$878,000

2018

$12,069 (+13.3%)

$497,000 + $347,000

$844,000

2017

$10,650 (+3.5%)

$469,000 + $266,000

$735,000

2016

$10,293 (+12.3%)

$447,000 + $258,000

$705,000

2014

$9,166 (+4.3%)

$365,000 + $226,000

$591,000

2013

$8,786 (+0.7%)

$354,000 + $224,000

$578,000

2012

$8,728 (−1.8%)

$346,000 + $237,000

$583,000

2011

$8,885 (+3.9%)

$353,000 + $264,000

$617,000

2010

$8,552 (+3.7%)

$353,000 + $264,000

$617,000

2009

$8,249

$372,000 + $264,000

$636,000

Tax history for 20 Mason St

Year

Property tax

Land + Additions

Assessment*

2026

$15,905 (+4.0%)

$768,000 + $524,000

$1,292,000

2025

$15,288 (+3.1%)

$731,000 + $519,000

$1,250,000

2024

$14,835 (+3.6%)

$696,000 + $515,000

$1,211,000

2023

$14,326 (+10.6%)

$633,000 + $469,000

$1,102,000

2022

$12,958 (−0.2%)

$575,000 + $364,000

$939,000

2021

$12,980 (+0.9%)

$548,000 + $354,000

$902,000

2020

$12,870 (+3.8%)

$548,000 + $368,000

$916,000

2019

$12,397 (+2.7%)

$522,000 + $356,000

$878,000

2018

$12,069 (+13.3%)

$497,000 + $347,000

$844,000

2017

$10,650 (+3.5%)

$469,000 + $266,000

$735,000

2016

$10,293 (+12.3%)

$447,000 + $258,000

$705,000

2014

$9,166 (+4.3%)

$365,000 + $226,000

$591,000

2013

$8,786 (+0.7%)

$354,000 + $224,000

$578,000

2012

$8,728 (−1.8%)

$346,000 + $237,000

$583,000

2011

$8,885 (+3.9%)

$353,000 + $264,000

$617,000

2010

$8,552 (+3.7%)

$353,000 + $264,000

$617,000

2009

$8,249

$372,000 + $264,000

$636,000

*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

15,936

Year renovated

—

Sq. Ft.

2,040

Year built

1967

Style

Single Family Residential

County

Middlesex County

APN

2827396S

Parking Spaces

Basement

Yes

Accessible

HOA Dues

—

Garage

Features

Pool

Last updated by owner on Apr 12, 2024.

Property details

Parking

Parking Information
Parking Spaces: 3

Interior

Master Bedroom Information
Area: 154
Length: 11
Width: 14
Level: Third
Features: Bathroom - 3/4,Ceiling Fan(s),Closet,Flooring - Hardwood

Bedroom #2 Information
Area: 154
Length: 11
Width: 14
Level: Third
Features: Closet,Flooring - Hardwood

Bedroom #3 Information
Area: 90
Length: 9
Width: 10
Level: Third
Features: Closet,Flooring - Hardwood

Bedroom #4 Information
Area: 126
Length: 9
Width: 14
Level: First
Features: Closet,Flooring - Stone/Ceramic Tile

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

Bathroom #1 Information
Area: 54
Length: 6
Width: 9
Level: Third
Features: Bathroom - Tiled With Tub,Flooring - Stone/Ceramic Tile

Bathroom #2 Information
Area: 20
Length: 4
Width: 5
Level: Third
Features: Bathroom - Tiled With Shower Stall,Flooring - Stone/Ceramic Tile

Bathroom #3 Information
Area: 45
Length: 5
Width: 9
Level: First
Features: Bathroom - Half,Flooring - Stone/Ceramic Tile,Dryer Hookup - Electric,Washer Hookup

Living Room Information
Area: 285
Length: 15
Width: 19
Level: Second
Features: Wood / Coal / Pellet Stove,Cathedral Ceiling(s),Beamed Ceilings,Flooring - Hardwood,Exterior Access,Open Floorplan,Recessed Lighting

Family Room Information
Area: 304
Length: 16
Width: 19
Level: First
Features: Bathroom - Half,Closet,Flooring - Stone/Ceramic Tile,Exterior Access

Dining Room Information
Area: 99
Length: 9
Width: 11
Level: Second
Features: Flooring - Hardwood,Exterior Access,Open Floorplan,Recessed Lighting

Kitchen Information
Area: 126
Length: 9
Width: 14
Level: Second
Features: Ceiling Fan(s),Flooring - Vinyl,Recessed Lighting

Basement Information
Basement: Partial, Crawl Space, Interior Entry, Sump Pump

Laundry Information
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): 8
Door Features: Storm Door(s)
Window Features: Window(s) - Picture, Storm Window(s)
Flooring: Wood, Tile, Vinyl, Stone / Slate, Flooring - Hardwood, Flooring - Stone/Ceramic Tile
Interior Features: Cathedral Ceiling(s), Closet, Entrance Foyer, Mud Room

Exterior

Building Information
Building Area (Total): 2,040
Foundation Details: Concrete Perimeter, Slab
Construction Materials: Post & Beam, Vertical Siding
Year Built Source: Public Records
Year Built Details: Renovated Since
Color: Dune gray

Exterior Features
Roof: Rubber
Patio And Porch Features: Screened, Patio
Exterior Features: Porch - Screened, Patio, Decorative Lighting, Stone Wall

Property Information
PropertySubType: Single Family Residence

Lot Information
Lot Size (Acres): 0.37
Lot Features: Wooded, Easements
Frontage Length: 125

Financial

Tax Information
Tax Annual Amount: $10,293
Tax Year: 2016

Utilities

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

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

Location

HOA Information
Has Association

Location Information
Directions: Mass. Ave. to Pleasant St., left onto Mason.
UnparsedAddress: 20 Mason St, Lexington MA 02421

Community Information
Senior CommunityYN: No
Community Features: Public Transportation, Shopping, Pool, Walk/Jog Trails, Golf, Medical Facility, Bike Path, Conservation Area, Highway Access, House of Worship

Public facts

Beds: 5
Baths: 3.0
Sq. Ft.: 2,040
Stories: 1.0
Parking Spaces: 3
Basement: Yes
Accessible: No
Lot Size: 0.37 acres
Style: Single Family Residential
Year Built: 1967
Year Renovated: —
County: Middlesex County
APN: 2827396S
HOA Dues: —
Garage: No
Features: Pool

Home facts updated by owner on Apr 12, 2024

Other

Miscellaneous Information
Heat Zones: 3

Listing Information
Exclusions: Personal Property, Wall Decor, Curtains, Garden Statue.
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 • 1.3mi

10/10

Lexington High School

Public 9-12 • Assigned • 2.0mi

10/10

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

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

$1.45M – $1.76M

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Home values near 20 Mason St

Data from public records.

Address	Redfin Estimate
7 Mason Street, Lexington, MA 5 Beds \| 3 Baths \| 1350 Sq. Ft.	$1,588,154
8 Mason Street, Lexington, MA 5 Beds \| 2.5 Baths \| 1898 Sq. Ft.	$1,545,381

Address	Redfin Estimate
9 Mason Street, Lexington, MA 5 Beds \| 2 Baths \| 2172 Sq. Ft.	$1,446,405
24 Mason Street, Lexington, MA 5 Beds \| 3 Baths \| 1326 Sq. Ft.	$1,332,156

Address	Redfin Estimate
6 Mason Street, Lexington, MA 5 Beds \| 2 Baths \| 1580 Sq. Ft.	$1,318,851
22 Mason Street, Lexington, MA 5 Beds \| 2.5 Baths \| 1326 Sq. Ft.	$1,410,783

Property information provided by MLS PIN when last listed in 2016. This data may not show owner updates. 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 20 Mason St

Tax history for 20 Mason St

Public record

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 02421

Home values near 20 Mason St

More real estate resources