OFF MARKET

$1,751,871

•

3 ba

•

2,638

sq ft

21 Kelly Rd, Cambridge, MA 02139

About this home

21 Kelly Rd is a 2,638 square foot multi-family home on a 2,614 square foot lot with 5 bedrooms and 3 bathrooms. Based on Redfin's Cambridge data, we estimate the home's value is $1,751,871.

Multi-familyProperty Type

1873Year Built

2,614 sq ftLot Size

$664Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$1,751,871

$36K since July

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 15.9% lower than the average sale price ($2.08M) of 6 comparable homes.

SOLD JUL 21, 2026
$1,702,000
A
5 beds3 baths1,995 sq ft
325 Western Ave, Cambridge, MA 02139
SOLD JAN 5, 2026
$1,800,000
B
5 beds2 baths2,151 sq ft
214 Allston St, Cambridge, MA 02139
SOLD JUL 8, 2026
$2,460,000
C
3 beds2 baths2,265 sq ft
514 Franklin St, Cambridge, MA 02139
SOLD AUG 10, 2026
$2,325,000
D
4 beds2.5 baths1,839 sq ft
48 Amory St, Cambridge, MA 02139
SOLD JAN 6, 2026
$1,260,000
E
5 beds2 baths2,175 sq ft
66 Elm St, Cambridge, MA 02139
SOLD JUN 26, 2026
$2,952,000
F
6 beds3.5 baths3,052 sq ft
302 Brookline St, Cambridge, MA 02139

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Earn from this home

Sell

$1,664,048

Est. take-home

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Market trends in 02139, MA

Last updated July 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

104.0%

0.3% MoM

Median sale price

$1.1M

$195K MoM

Avg. days on market

22d

1 days MoM

Recently sold homes

21 MoM

New listings for sale

$495,000
1 bed1 bath534 sq ft
51 Lopez St #4, Cambridge, MA 02139
$2,400,000
6 beds4 baths3,612 sq ft
14 Saint Paul St, Cambridge, MA 02139
$739,900
2 beds1 bath893 sq ft
277 River St #1, Cambridge, MA 02139
$1,295,000
3 beds2 baths1,254 sq ft
20 Marie Ave #1, Cambridge, MA 02139
$790,900
2 beds1 bath810 sq ft
65 Howard St #2, Cambridge, MA 02139
See all

Provided by Redfin

Sale history for 21 Kelly Rd

Year

Property tax

Land + Additions

Assessment*

2025

$10,999 (+5.7%)

$836,200 + $896,000

$1,732,200

2024

$10,403 (+6.8%)

$894,200 + $863,100

$1,757,300

2023

$9,743 (+4.2%)

$885,300 + $777,400

$1,662,700

2022

$9,351 (+6.2%)

$877,100 + $702,400

$1,579,500

2021

$8,803 (+6.6%)

$829,000 + $675,800

$1,504,800

2020

$8,258 (+7.1%)

$788,200 + $647,900

$1,436,100

2019

$7,707 (+6.0%)

$687,500 + $609,900

$1,297,400

2018

$7,273 (+0.4%)

$604,500 + $551,800

$1,156,300

2017

$7,242 (+9.0%)

$592,600 + $523,300

$1,115,900

2016

$6,644 (+2.6%)

$468,200 + $482,300

$950,500

2015

$6,477

$408,900 + $419,400

$828,300

2014

$6,471 (+10.7%)

$388,200 + $384,000

$772,200

2013

$5,844 (+3.0%)

$305,200 + $369,600

$674,800

2012

$5,672 (+27.0%)

$299,300 + $369,600

$668,900

2011

$4,466

$299,300 + $248,000

$547,300

2010

$4,466 (+2.8%)

$299,300 + $248,000

$547,300

2009

$4,345

$312,900 + $261,800

$574,700

Tax history for 21 Kelly Rd

Year

Property tax

Land + Additions

Assessment*

2025

$10,999 (+5.7%)

$836,200 + $896,000

$1,732,200

2024

$10,403 (+6.8%)

$894,200 + $863,100

$1,757,300

2023

$9,743 (+4.2%)

$885,300 + $777,400

$1,662,700

2022

$9,351 (+6.2%)

$877,100 + $702,400

$1,579,500

2021

$8,803 (+6.6%)

$829,000 + $675,800

$1,504,800

2020

$8,258 (+7.1%)

$788,200 + $647,900

$1,436,100

2019

$7,707 (+6.0%)

$687,500 + $609,900

$1,297,400

2018

$7,273 (+0.4%)

$604,500 + $551,800

$1,156,300

2017

$7,242 (+9.0%)

$592,600 + $523,300

$1,115,900

2016

$6,644 (+2.6%)

$468,200 + $482,300

$950,500

2015

$6,477

$408,900 + $419,400

$828,300

2014

$6,471 (+10.7%)

$388,200 + $384,000

$772,200

2013

$5,844 (+3.0%)

$305,200 + $369,600

$674,800

2012

$5,672 (+27.0%)

$299,300 + $369,600

$668,900

2011

$4,466

$299,300 + $248,000

$547,300

2010

$4,466 (+2.8%)

$299,300 + $248,000

$547,300

2009

$4,345

$312,900 + $261,800

$574,700

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

Property details

Interior

Basement Information
Basement Sq. Ft: 1,135

Bathroom Information
# of Full Baths: 3

Heating & Cooling
Heating Type: Forced Air

Room Information
# of Rooms: 13

Exterior

Exterior Information
Physical Condition: Average
Exterior Wall: Aluminum/Vinyl
Roof Shape Type: Gable

Property Information
Subdivision Name: CAMBRIDGE
Living Sq. Ft: 2,638
Gross Sq. Ft: 4,353
Ground Floor Sq. Ft: 1,135
# of Units: 3
# of Stories: 3

Lot Information
# of Buildings: 1
Land Sq. Ft: 2,614
Municipality Name: CAMBRIDGE
Acres: 0.06
Zoning Code: C
State Use Description: 3-FAMILY RESIDENCE

Financial

Assessor Information
Assessment Year: 2025

Public facts

Beds: 5
Baths: 3.0
Sq. Ft.: 2,638
Stories: 3.0
Lot Size: 2,614 square feet
Style: Multi-Family (2-4 Unit)
Year Built: 1873
Year Renovated: —
County: Middlesex County
APN: 851892S

Home facts updated by county records on Jul 29, 2026

Around this home

Schools

The Amigos School

Public PreK-8 • Assigned • 0.0mi

9/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

Despite new zoning laws encouraging housing production, Cambridge remains a Seller's market driven by pent-up demand and a constant influx of buyers. Because it is a historic, built-out city, there is little new housing to replace existing...
2 months ago • Cambridge
Benjamin Ginsburg
Redfin Premier agent
152 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

6/10 Heat Factor

7 days above 96° expected this year, 15 days in 30 years

6/10 Wind Factor

64% chance of strong winds in next 30 years

3/10 Air Factor

3 unhealthy days expected this year, 3 days in 30 years

Provided by First Street

Historical weather

Cambridge, MA • 02139

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 9.2 hours in June and 4.4 hours in December, placing it below the U.S. average for solar exposure.

9.2 hrs

4.4 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$1.67M – $2.02M

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New listings for sale in 02139

$495,000

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51 Lopez St #4, Cambridge, MA 02139

$2,400,000

6 beds4 baths3,612 sq ft

14 Saint Paul St, Cambridge, MA 02139

$739,900

2 beds1 bath893 sq ft

277 River St #1, Cambridge, MA 02139

$1,295,000

3 beds2 baths1,254 sq ft

20 Marie Ave #1, Cambridge, MA 02139

$790,900

2 beds1 bath810 sq ft

65 Howard St #2, Cambridge, MA 02139

Home values near 21 Kelly Rd

Data from public records.

Address	Redfin Estimate
20 Kelly Road Unit 18, Cambridge, MA 6 Beds \| 3 Baths \| 2764 Sq. Ft.	$2,101,236
27 Kelly Road, Cambridge, MA 4 Beds \| 3 Baths \| 2300 Sq. Ft.	$1,795,449

Address	Redfin Estimate
17 Kelly Road, Cambridge, MA 5 Beds \| 3 Baths \| 3270 Sq. Ft.	$2,539,242
23 Kelly Road Unit A, Cambridge, MA 6 Beds \| 3 Baths \| 3252 Sq. Ft.	$2,041,016

Address	Redfin Estimate
19 Kelly Road, Cambridge, MA 4 Beds \| 2.5 Baths \| 2250 Sq. Ft.	$1,793,404
25 Kelly Road Unit 1, Cambridge, MA 1 Beds \| 1 Baths \| 1074 Sq. Ft.	$820,758

Property information provided by undefined .

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