SOLD SEP 23, 2026

Off market sep 2026 for $1.4M

$1,205,503

Est. refi paymentEst. refi $9,777/mo

•

2 ba

•

1,579

sq ft

100 Keyes Rd #309, Concord, MA 01742

About this home

Rarely offered 3 bedroom unit in Milldam Square. Walk to everything Concord center has to offer from this top floor unit! Soaring 14' ceilngs, pretty hardwood floors in the Living/Dining area and a cozy reading nook are some of the features you are sure to enjoy. Oversized windows and glass doors allow an abundance of natural light to fill the rooms due to prime southwestern exposure and a private balcony ensures outdoor enjoyment during warmer weather.There are 3 bedrooms - one with a wall of custom built-ins making it a wonderful, quiet study or home office should one wish and the master has his & her closets as well as a private bath with walk in shower. Reading alcoves in various common areas as well as use of the club room and private kitchen are available for parties and private gatherings. A separate storage locker as well as open storage space for off season items are available. Each unit has a separate electric meter; other utilities are included in the association fee.

CondoProperty Type

1952Year Built

$763Est. Price/Sq.Ft.

2 spacesParking

Listed by Amy Barrett • Barrett Sotheby's International Realty

Bought with Senkler, Pasley & Whitney • Coldwell Banker Residential Brokerage - Concord

Source:MLS PIN #72610318

Redfin Estimate

$1,205,503

$279K since sold in September 2026$116K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 44.7% higher than the average sale price ($833K) of 6 comparable homes.

SOLD JUN 18, 2026
$820,000
A
3 beds1.5 baths1,794 sq ft
95 Hubbard St #95, Concord, MA 01742
SOLD AUG 18, 2026
$650,000
B
3 beds2.5 baths1,661 sq ft
1844 Main St #1, Concord, MA 01742
SOLD OCT 14, 2026
$815,000
C
4 beds2.5 baths1,860 sq ft
189 Conant St #189, Concord, MA 01742
SOLD JUN 18, 2026
$1,095,000
D
2 beds1.5 baths1,374 sq ft
34 Thoreau St #34, Concord, MA 01742
SOLD OCT 16, 2026
$790,000
E
3 beds2.5 baths1,530 sq ft
16 Neillian Way #16, Bedford, MA 01730
SOLD OCT 9, 2026
$827,000
F
2 beds2 baths1,214 sq ft
22 Concord Greene #5, Concord, MA 01742

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Earn from this home

Sell

−$41,242

Est. take-home

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Est. cash available

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Rent

$2,762/mo

Redfin rental estimate

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Market trends in 01742, MA

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

99.4%

+1.2% MoM

Median sale price

$1.6M

$75K MoM

Avg. days on market

38d

2 days MoM

Recently sold homes

9 MoM

New listings for sale

$3,100,000
4 beds4.5 baths5,006 sq ft
Lot 2 Garrison Road Ext, Concord, MA 01742
VIDEO TOUR
$2,500,000
4 beds4.5 baths4,962 sq ft
125 Chestnut St, Concord, MA 01742
OPEN TODAY, 12PM TO 1:30PM
$2,250,000
5 beds3.5 baths2,555 sq ft
242 Lexington Rd, Concord, MA 01742
$1,598,000
4 beds3.5 baths2,800 sq ft
1045 Main St, Concord, MA 01742
$1,748,000
4 beds3.5 baths3,521 sq ft
71 Bristers Hill Rd, Concord, MA 01742
$6,795,000
6 beds6.5 baths11,500 sq ft
55 Captain Miles Ln, Concord, MA 01742
See all

Provided by Redfin

Sale history for 100 Keyes Rd #309

Date

Event

Price

Public Records

Sep 23, 2026

Sold

$1,485,000

$940/sq ft

MLS PIN #72610318

Apr 10, 2020

Sold

$805,000

$510/sq ft

Feb 14, 2020

Pending

—

Jan 31, 2020

Contingent

—

Jan 21, 2020

Listed

$826,000

$523/sq ft

+18

Public Records

Feb 4, 2005

Sold

$682,000

$432/sq ft

MLS PIN #70108560

Feb 4, 2005

Sold

$682,900

$432/sq ft

Nov 15, 2004

Listing Removed

—

Oct 22, 2004

Listed

$679,900

$431/sq ft

Public Records

Aug 1, 1993

Sold

$244,500

$155/sq ft

Public Records

Jul 1, 1988

Sold

$307,000

$194/sq ft

Year

Property tax

Land + Additions

Assessment*

2026

$12,514 (+11.6%)

$958,900

2025

$11,210 (−7.6%)

$845,400

2024

$12,127 (+6.6%)

$923,600

2023

$11,378 (−6.2%)

$877,900

2022

$12,136 (+15.3%)

$822,200

2021

$10,523 (+6.3%)

$714,900

2020

$9,898 (+1.2%)

$695,600

2019

$9,777 (−2.0%)

$689,000

2018

$9,972 (+1.6%)

$697,800

2017

$9,818 (+20.0%)

$697,800

2016

$8,181 (+4.1%)

$587,700

2015

$7,861 (−4.9%)

$550,100

2014

$8,265 (−1.0%)

$572,000

2013

$8,349 (+4.4%)

$593,400

2012

$7,995 (+1.6%)

$588,700

2011

$7,867 (+4.6%)

$600,500

2010

$7,520 (−0.6%)

$574,500

2009

$7,564

$635,600

Tax history for 100 Keyes Rd #309

Year

Property tax

Land + Additions

Assessment*

2026

$12,514 (+11.6%)

$958,900

2025

$11,210 (−7.6%)

$845,400

2024

$12,127 (+6.6%)

$923,600

2023

$11,378 (−6.2%)

$877,900

2022

$12,136 (+15.3%)

$822,200

2021

$10,523 (+6.3%)

$714,900

2020

$9,898 (+1.2%)

$695,600

2019

$9,777 (−2.0%)

$689,000

2018

$9,972 (+1.6%)

$697,800

2017

$9,818 (+20.0%)

$697,800

2016

$8,181 (+4.1%)

$587,700

2015

$7,861 (−4.9%)

$550,100

2014

$8,265 (−1.0%)

$572,000

2013

$8,349 (+4.4%)

$593,400

2012

$7,995 (+1.6%)

$588,700

2011

$7,867 (+4.6%)

$600,500

2010

$7,520 (−0.6%)

$574,500

2009

$7,564

$635,600

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

Property details

Interior

Bathroom Information
# of Full Baths: 2

Heating & Cooling
Heating Type: Forced Air

Room Information
# of Rooms: 5

Exterior

Exterior Information
Physical Condition: Average
Exterior Wall: Brick
Roof Shape Type: Flat

Property Information
Subdivision Name: MILDAM SQUARE
Living Sq. Ft: 1,579
Gross Sq. Ft: 1,675
# of Stories: 1
Legal Description: CONC 00009H - 001703 - 000309 - 000000

Parking & Garage Information
Parking Type: Basement Garage
Garage / Carport Type: Basement

Lot Information
# of Buildings: 1
Municipality Name: CONCORD
Zoning Code: B
State Use Description: CONDOMINIUM

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 3
Baths: 2.0
Sq. Ft.: 1,579
Stories: 1.0
Lot Size: —
Style: Condo/Co-op
Year Built: 1952
Year Renovated: 1955
County: Middlesex County
APN: 2125964S

Home facts updated by county records on Oct 15, 2026

About this building

No units for sale

100 Keyes Rd, Concord, MA 01742

See photos & sale trends

Photo via 100 Keyes Rd #307

Units for sale

Unit Information Not Available

There aren't any units for sale in this building.

Around this home

Schools

Alcott Elementary School

Public PreK-5 • Assigned • 0.7mi

9/10

Concord Middle School

Public 6-8 • Assigned • 2.6mi

8/10

Concord Carlisle High School

Public 9-12 • Assigned • 1.0mi

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 97° 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

Concord, MA • 01742

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

$1.15M – $1.39M

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Home values near 100 Keyes Rd #309

Data from public records.

Address	Redfin Estimate
100 Keyes Rd Apt 131, Concord, MA 1 Beds \| 1 Baths \| 1040 Sq. Ft.	$608,010
100 Keyes Rd Apt 223, Concord, MA 2 Beds \| 2 Baths \| 1300 Sq. Ft.	$892,024

Address	Redfin Estimate
100 Keyes Rd Apt 206, Concord, MA 2 Beds \| 2 Baths \| 1135 Sq. Ft.	$772,816
100 Keyes Rd Apt 233, Concord, MA 1 Beds \| 1 Baths \| 1066 Sq. Ft.	$618,928

Address	Redfin Estimate
100 Keyes Rd Apt 216, Concord, MA 2 Beds \| 2.5 Baths \| 1709 Sq. Ft.	$1,171,373
100 Keyes Rd Apt 302, Concord, MA 1 Beds \| 1 Baths \| 839 Sq. Ft.	$581,755

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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 01742, MA

Sale history for 100 Keyes Rd #309

Tax history for 100 Keyes Rd #309

Property details

About this building

Unit Information Not Available

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 01742

Home values near 100 Keyes Rd #309

More real estate resources