Google street view image for 20 Porter St, Watertown, MA 02472

Off market

$1,139,957

•

3 ba

•

2,296

sq ft

20 Porter St, Watertown, MA 02472

About this home

20 Porter St is a 2,296 square foot condo with 4 bedrooms and 3 bathrooms. Based on Redfin's Watertown data, we estimate the home's value is $1,139,957.

CondoProperty Type

1909Year Built

$496Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$1,139,957

$20K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 0.4% higher than the average sale price ($1.14M) of 6 comparable homes.

SOLD JUN 12, 2026
$1,065,000
A
4 beds3 baths2,211 sq ft
29 Laurel #29, Watertown, MA 02472
SOLD SEP 1, 2026
$1,040,000
B
4 beds3 baths2,142 sq ft
172 Orchard St #172, Watertown, MA 02472
SOLD MAY 14, 2026
$1,185,000
C
4 beds2.5 baths2,151 sq ft
27 Laurel #27, Watertown, MA 02472
SOLD OCT 1, 2026
$1,482,500
D
3 beds2.5 baths2,529 sq ft
134 Mount Auburn St #7, Watertown, MA 02472
SOLD JUL 17, 2026
$1,098,000
E
3 beds3 baths2,100 sq ft
46-48 Keenan St #46, Watertown, MA 02472
SOLD JUL 30, 2026
$945,000
F
3 beds2 baths2,430 sq ft
14 Adams Ave #14, Watertown, MA 02472

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Earn from this home

Sell

$1,082,461

Est. take-home

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Rent

$4,688/mo

Redfin rental estimate

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Market trends in 02472, MA

Last updated October 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

100.5%

+0.1% MoM

Median sale price

$820K

$60K MoM

Avg. days on market

20d

2 days MoM

Recently sold homes

19 MoM

New listings for sale

OPEN SAT, 12PM TO 1:30PM
$850,000
3 beds2 baths1,260 sq ft
54 Buick St, Watertown, MA 02472
EARLY ACCESS
$1,200,000
3 beds2 baths2,519 sq ft
125 Lovell Rd, Watertown, MA 02472
$769,900
3 beds1 bath1,113 sq ft
54 Evans St, Watertown, MA 02472
$629,000
2 beds2 baths1,270 sq ft
151 Coolidge Ave #404, Watertown, MA 02472
OPEN FRI, 12PM TO 2PM
$3,190,000
8 beds9 baths6,568 sq ft
198-200 Belmont St, Watertown, MA 02472
EARLY ACCESS
$1,100,000
3 beds3 baths2,028 sq ft
5 Winter St #5, Watertown, MA 02472
$397,000
2 beds1 bath600 sq ft
50 Carey Ave #9, Watertown, MA 02472
$575,000
1 bed1 bath840 sq ft
151 Coolidge Ave #608, Watertown, MA 02472
OPEN FRI, 12PM TO 2PM
$1,595,000
4 beds4.5 baths3,284 sq ft
200 Belmont St Unit U01, Watertown, MA 02472
VIDEO TOUR
$539,000
2 beds1 bath896 sq ft
90 Cypress St #2, Watertown, MA 02472
See all

Provided by Redfin

Sale history for 20 Porter St

As the MLS and public records start to fill up, we'll list the details here.

Tax history for 20 Porter St

*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: 3

Heating & Cooling
Heating Type: Forced Air

Room Information
# of Rooms: 8

Exterior

Exterior Information
Physical Condition: Average
Building Style Type: Duplex
Construction Type: Frame
Exterior Wall: Aluminum Siding
Roof Shape Type: Gable

Property Information
Living Sq. Ft: 2,296
Gross Sq. Ft: 2,696
# of Units: 1
# of Stories: 3

Lot Information
# of Buildings: 1
Land Sq. Ft: 5,386
Municipality Name: WATERTOWN
Acres: 0.1236
Zoning Code: T
State Use Description: CONDOMINIUM

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 2,296
Stories: 3.0
Lot Size: —
Style: Condo/Co-op
Year Built: 1909
Year Renovated: 2020
County: Middlesex County
APN: 21355330S

Home facts updated by county records on Sep 10, 2026

Around this home

Schools

K - 12
Preschool & daycare

Hosmer Elementary School

Public PreK-5 • Assigned • 0.2mi

7/10

Watertown Middle School

Public 6-8 • Assigned • 1.4mi

7/10

Watertown High School

Public 9-12 • Assigned • 1.5mi

6/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

Watertown's urban-suburban feeling paired with its proximity to Cambridge & Boston have caused it to rapidly transform into a destination for home buyers. Historically a manufacturing city, it has changed into a restaurant, shopping, and biotech hub...
2 months ago • Watertown
Benjamin Ginsburg
Redfin Premier agent
155 deals
Was this helpful?
Watertown’s market has exploded in recent years, with high home prices. Located close to Boston, it offers the perfect balance of a seamless urban commute and the tranquility of suburban living. Enhanced by flexible MBTA bus options and its location...
2 months ago • Watertown
Kyle MacNichol
Redfin Premier agent
59 deals
Was this helpful?

Historical weather

Watertown, MA • 02472

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

Try the sun simulator tool to see how light moves across the property at different times of day and year.

Provided by Shadowmap

Estimated sale price

$1.08M – $1.31M

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Nearby similar homes

$629,000

2 beds2 baths1,270 sq ft

151 Coolidge Ave #404, Watertown, MA 02472

Completely remodeled • Modern upgrades • Rainfall showerhead

$699,000

2 beds1 bath935 sq ft

12-14 Adair Rd #12, Brighton, MA 02135

Updated condo • Common outdoor patio • Off-street parking

$599,000

2 beds2 baths1,270 sq ft

131 Coolidge Ave #526, Watertown, MA 02472

Private balcony • Updated finishes • Walk-in closet

VIDEO TOUR

$539,000

2 beds1 bath896 sq ft

90 Cypress St #2, Watertown, MA 02472

Top-floor living • Renovated kitchen • Induction cooking

$395,000

2 beds1 bath725 sq ft

183 Mt Auburn St #15, Watertown, MA 02472

Quartz countertops • Private storage • $445 HOA

$2,695,000

3 beds4.5 baths2,460 sq ft

8 Holworthy Ter #8, Cambridge, MA 02138

Two-tone siding • Black-framed windows • European windows

New listings for sale in 02472

OPEN SAT, 12PM TO 1:30PM

$850,000

3 beds2 baths1,260 sq ft

54 Buick St, Watertown, MA 02472

Bright living room • Open-concept kitchen • Cherry cabinetry

EARLY ACCESSCOLDWELL BANKER REALTY COMING SOON

$1,200,000

3 beds2 baths2,519 sq ft

125 Lovell Rd, Watertown, MA 02472

Renovated kitchen • Granite countertops • Three-season sunroom

$769,900

3 beds1 bath1,113 sq ft

54 Evans St, Watertown, MA 02472

Welcoming entry hall • Spacious living room • Custom built-ins

$629,000

2 beds2 baths1,270 sq ft

151 Coolidge Ave #404, Watertown, MA 02472

Completely remodeled • Modern upgrades • Rainfall showerhead

OPEN FRI, 12PM TO 2PM

$3,190,000

8 beds9 baths6,568 sq ft

198-200 Belmont St, Watertown, MA 02472

Finished lower level • Private garage • Open-concept living

EARLY ACCESSCOMPASS COMING SOON

$1,100,000

3 beds3 baths2,028 sq ft

5 Winter St #5, Watertown, MA 02472

Private roof deck • 360 degree views • Granite counters

$397,000

2 beds1 bath600 sq ft

50 Carey Ave #9, Watertown, MA 02472

Open-concept design • Granite countertops • Updated cabinetry

$575,000

1 bed1 bath840 sq ft

151 Coolidge Ave #608, Watertown, MA 02472

Recently renovated • Open floor plan • Two parking spaces

OPEN FRI, 12PM TO 2PM

$1,595,000

4 beds4.5 baths3,284 sq ft

200 Belmont St Unit U01, Watertown, MA 02472

New construction • Custom millwork • Open concept layout

Home values near 20 Porter St

Data from public records.

Address	Redfin Estimate
17 Porter Street Unit 15, Watertown, MA 4 Beds \| 3 Baths \| 3391 Sq. Ft.	$1,196,710
10 Porter Street, Watertown, MA 5 Beds \| 3 Baths \| 3164 Sq. Ft.	$1,334,793
24 Porter Street Unit 22, Watertown, MA 5 Beds \| 4 Baths \| 3231 Sq. Ft.	$1,455,070
18 Porter Street, Watertown, MA 4 Beds \| 3 Baths \| 1145 Sq. Ft.	$798,682
26-28 Porter Street, Watertown, MA 4 Beds \| 2 Baths \| 2556 Sq. Ft.	$1,006,014
18 Porter Street Unit 18, Watertown, MA 4 Beds \| 3 Baths \| 2050 Sq. Ft.	$993,424
246 Boylston Street, Watertown, MA 3 Beds \| 2 Baths \| 1240 Sq. Ft.	$762,130

Address	Redfin Estimate
19 Porter Street, Watertown, MA 7 Beds \| 3 Baths \| 3749 Sq. Ft.	$1,413,618
16 Porter Street, Watertown, MA 4 Beds \| 2 Baths \| 2574 Sq. Ft.	$1,015,439
28 Porter Street, Watertown, MA 4 Beds \| 2 Baths \| 2556 Sq. Ft.	$1,083,335
24 Porter Street Unit 24, Watertown, MA 3 Beds \| 2 Baths \| 1961 Sq. Ft.	$1,137,848
15-17 Porter Street, Watertown, MA 5 Beds \| 3 Baths \| 3391 Sq. Ft.	$1,773,658
18 Porter Street, Watertown, MA 4 Beds \| 3 Baths \| 1145 Sq. Ft.	$874,224
246 Boylston Street Unit 246, Watertown, MA 3 Beds \| 2 Baths \| 1846 Sq. Ft.	$795,025

Address	Redfin Estimate
25 Porter Street, Watertown, MA 4 Beds \| 2 Baths \| 2793 Sq. Ft.	$1,104,869
18 Porter Street, Watertown, MA 4 Beds \| 2 Baths \| 2574 Sq. Ft.	$1,196,846
18 Porter Street Unit 20, Watertown, MA 4 Beds \| 3 Baths \| 2300 Sq. Ft.	$1,066,414
22 Porter Street Unit 22, Watertown, MA 3 Beds \| 2 Baths \| 1897 Sq. Ft.	$1,059,006
22-24 Porter Street, Watertown, MA 5 Beds \| 3 Baths \| 3231 Sq. Ft.	$1,256,922
248 Boylston Street, Watertown, MA 2 Beds \| 1 Baths \| 1009 Sq. Ft.	$618,761
248 Boylston Street Unit 248, Watertown, MA 2 Beds \| 1 Baths \| 1009 Sq. Ft.	$640,301

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About this home

Redfin Estimate

Earn from this home

Market trends in 02472, MA

Sale history for 20 Porter St

Tax history for 20 Porter St

Property details

Around this home

Schools

Lifestyle

Local insights from Redfin agents

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 02472

Home values near 20 Porter St

More real estate resources