Off market nov 1999 for $400K

$1,383,164

Est. refi paymentEst. refi $2,643/mo

•

3,749

sq ft

19-21 Porter St, Watertown, MA 02472

About this home

Multi-familyProperty Type

1920Year Built

10,019 sq ftLot Size

$369Est. Price/Sq.Ft.

2 garage spacesParking

Listed by Ari Koufos • Realty Executives

Bought with Ari Koufos • Realty Executives

Redfin checked: 2 minutes ago

•Source:MLS PIN #30347135

Redfin Estimate

$1,383,164

$983K since sold in November 1999$37K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 20.8% lower than the average sale price ($1.75M) of 5 comparable homes.

SOLD SEP 28, 2026
$1,260,000
A
6 beds3 baths3,166 sq ft
204-206 School St, Watertown, MA 02472
SOLD SEP 9, 2026
$1,319,000
B
6 beds3 baths2,806 sq ft
22 Cypress St, Watertown, MA 02472
SOLD NOV 20, 2025
$1,650,000
C
5 beds3 baths3,391 sq ft
15-17 Porter St, Watertown, MA 02472
SOLD JUL 10, 2026
$2,020,000
D
5 beds3 baths3,679 sq ft
16 Russell Ave, Watertown, MA 02472
SOLD SEP 4, 2026
$2,481,500
E
4 beds3.5 baths3,364 sq ft
42 Hillside Ter, Belmont, MA 02478

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Earn from this home

Sell

$1,259,614

Est. take-home

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Est. cash available

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Market trends in 02472, MA

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

100.4%

+0.7% MoM

Median sale price

$880K

$5K MoM

Avg. days on market

22d

0 days MoM

Recently sold homes

14 MoM

New listings for sale

$1,185,000
3 beds3.5 baths1,592 sq ft
41 Paul St #1, Watertown, MA 02472
$1,050,000
3 beds2.5 baths1,850 sq ft
134 Edenfield Ave #2, Watertown, MA 02472
$950,000
3 beds2.5 baths1,853 sq ft
748 Mount Auburn St #748, Watertown, MA 02472
3D WALKTHROUGH
$359,000
1 bed1 bath421 sq ft
20 Riverside St Unit 2-3, Watertown, MA 02472
$539,000
2 beds1 bath1,282 sq ft
298 Mt. Auburn St #7, Watertown, MA 02472
$369,900
1 bed1 bath670 sq ft
164 Galen St #62, Watertown, MA 02472
$1,189,999
4 beds1.5 baths2,455 sq ft
230 Orchard St, Watertown, MA 02472
3D WALKTHROUGH
$674,000
2 beds1.5 baths1,200 sq ft
88 Belmont St #88, Watertown, MA 02472
$1,500,000
5 beds3 baths3,050 sq ft
745/ 747 Mount Auburn St, Watertown, MA 02472
3D WALKTHROUGH
$1,150,000
4 beds2 baths2,150 sq ft
227 Common St, Watertown, MA 02472
See all

Provided by Redfin

Sale history for 19-21 Porter St

Year

Property tax

Land + Additions

Assessment*

2026

$14,819 (+9.7%)

$518,100 + $696,600

$1,214,700

2025

$13,506 (+6.9%)

$518,100 + $638,200

$1,156,300

2024

$12,636 (−12.5%)

$517,600 + $562,400

$1,080,000

2023

$14,441 (+9.1%)

$501,000 + $562,400

$1,063,400

2022

$13,233 (+11.4%)

$450,900 + $547,800

$998,700

2021

$11,881 (+3.2%)

$442,500 + $527,400

$969,900

2020

$11,518 (−0.3%)

$425,800 + $523,000

$948,800

2019

$11,551 (+5.9%)

$409,100 + $487,700

$896,800

2018

$10,911 (+6.1%)

$363,200 + $446,800

$810,000

2017

$10,280 (+7.4%)

$363,200 + $376,900

$740,100

2016

$9,572 (+9.6%)

$325,700 + $374,000

$699,700

2015

$8,732 (+0.5%)

$309,000 + $272,000

$581,000

2014

$8,692 (+1.9%)

$309,000 + $272,000

$581,000

2013

$8,529 (+8.6%)

$309,000 + $272,000

$581,000

2012

$7,855

$273,500 + $272,000

$545,500

2011

$7,862 (+1.9%)

$273,500 + $291,300

$564,800

2010

$7,712 (−1.1%)

$288,100 + $291,300

$579,400

2009

$7,794

$320,600 + $316,200

$636,800

Tax history for 19-21 Porter St

Year

Property tax

Land + Additions

Assessment*

2026

$14,819 (+9.7%)

$518,100 + $696,600

$1,214,700

2025

$13,506 (+6.9%)

$518,100 + $638,200

$1,156,300

2024

$12,636 (−12.5%)

$517,600 + $562,400

$1,080,000

2023

$14,441 (+9.1%)

$501,000 + $562,400

$1,063,400

2022

$13,233 (+11.4%)

$450,900 + $547,800

$998,700

2021

$11,881 (+3.2%)

$442,500 + $527,400

$969,900

2020

$11,518 (−0.3%)

$425,800 + $523,000

$948,800

2019

$11,551 (+5.9%)

$409,100 + $487,700

$896,800

2018

$10,911 (+6.1%)

$363,200 + $446,800

$810,000

2017

$10,280 (+7.4%)

$363,200 + $376,900

$740,100

2016

$9,572 (+9.6%)

$325,700 + $374,000

$699,700

2015

$8,732 (+0.5%)

$309,000 + $272,000

$581,000

2014

$8,692 (+1.9%)

$309,000 + $272,000

$581,000

2013

$8,529 (+8.6%)

$309,000 + $272,000

$581,000

2012

$7,855

$273,500 + $272,000

$545,500

2011

$7,862 (+1.9%)

$273,500 + $291,300

$564,800

2010

$7,712 (−1.1%)

$288,100 + $291,300

$579,400

2009

$7,794

$320,600 + $316,200

$636,800

*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

10,019 Sq. Ft.

Year renovated

—

Sq. Ft.

3,689

Year built

1920

Style

Multi-Family (2-4 Unit)

County

Middlesex County

APN

1792443S

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Sep 11, 2026.

Property details

Parking

Parking Information
Has Garage
# of Garage Spaces: 2
# of Covered Spaces: 2
Parking Spaces: 7
Parking Features: Off Street

Interior

Bathroom Information
# of Bathrooms (Full): 3

Basement Information
Basement: Interior Entry

Interior Features
# of Rooms (Total): 16
Flooring: Wood
Interior Features: Living Room, Dining Room, Kitchen

Unit #1 Information
# of Levels: 1
# of Floors: 1
Lease: Y

Unit #2 Information
# of Levels: 1
# of Floors: 2
Lease: N

Unit #3 Information
# of Levels: 1
# of Floors: 3
Lease: Y

Exterior

Building Information
Building Area (Total): 3,749
Foundation Details: Block
Construction Materials: Frame
Stories (Total): 3
Year Built Source: Public Records
Year Built Details: Approximate

Exterior Features
Fencing: Fenced
Roof: Shingle
Patio And Porch Features: Porch

Property Information
PropertySubType: 3 Family

Lot Information
Lot Size (Acres): 0.23
Road Frontage Type: Public

Financial

Tax Information
Tax Annual Amount: $3,836
Tax Year: 99

Utilities

Utility Information
Water Source: Public, City/Town Water

Heating & Cooling
Heating Units: 3
Cooling Units: 0

Location

Location Information
UnparsedAddress: 19-21 Porter Street, Watertown MA 02472

Community Information
Senior CommunityYN: No
Community Features: Public Transportation, Shopping, Laundromat

Public facts

Beds: 6
Baths: 3.0
Sq. Ft.: 3,689
Stories: 3.0
Lot Size: 10,019 square feet
Style: Multi-Family (2-4 Unit)
Year Built: 1920
Year Renovated: —
County: Middlesex County
APN: 1792443S

Home facts updated by county records on Sep 11, 2026

Other

Miscellaneous Information
Heat Zones: 3

Listing Information
StandardStatus: Closed

Around this home

Schools

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...
4 weeks 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...
4 weeks ago • Watertown
Kyle MacNichol
Redfin Premier agent
59 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

59% 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

Watertown, MA • 02472

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

$1.32M – $1.59M

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Nearby similar homes

$1,500,000

5 beds3 baths3,050 sq ft

745/ 747 Mount Auburn St, Watertown, MA 02472

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6 beds3 baths2,500 sq ft

109 Belmont St, Cambridge, MA 02138

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28-30 Etna St, Brighton, MA 02135

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28 Appleton St, Watertown, MA 02472

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128 Summer St, Watertown, MA 02472

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11 beds7 baths3,844 sq ft

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New listings for sale in 02472

$1,185,000

3 beds3.5 baths1,592 sq ft

41 Paul St #1, Watertown, MA 02472

$1,050,000

3 beds2.5 baths1,850 sq ft

134 Edenfield Ave #2, Watertown, MA 02472

$950,000

3 beds2.5 baths1,853 sq ft

748 Mount Auburn St #748, Watertown, MA 02472

3D WALKTHROUGH

$359,000

1 bed1 bath421 sq ft

20 Riverside St Unit 2-3, Watertown, MA 02472

$539,000

2 beds1 bath1,282 sq ft

298 Mt. Auburn St #7, Watertown, MA 02472

$369,900

1 bed1 bath670 sq ft

164 Galen St #62, Watertown, MA 02472

$1,189,999

4 beds1.5 baths2,455 sq ft

230 Orchard St, Watertown, MA 02472

3D WALKTHROUGH

$674,000

2 beds1.5 baths1,200 sq ft

88 Belmont St #88, Watertown, MA 02472

$1,500,000

5 beds3 baths3,050 sq ft

745/ 747 Mount Auburn St, Watertown, MA 02472

Home values near 19-21 Porter St

Data from public records.

Address	Redfin Estimate
7 Porter St, Watertown, MA 5 Beds \| 3 Baths \| 3401 Sq. Ft.	$1,260,749
25 Porter St, Watertown, MA 4 Beds \| 2 Baths \| 2793 Sq. Ft.	$1,112,146

Address	Redfin Estimate
13 Porter St, Watertown, MA 4 Beds \| 2 Baths \| 2476 Sq. Ft.	$1,031,003
27 Porter St, Watertown, MA 4 Beds \| 2 Baths \| 2649 Sq. Ft.	$1,098,988

Address	Redfin Estimate
17 Porter St Apartment 15, Watertown, MA 4 Beds \| 3 Baths \| 3391 Sq. Ft.	$1,185,714
33 Porter St, Watertown, MA 5 Beds \| 3 Baths \| 3200 Sq. Ft.	$1,103,772

Property information provided by MLS PIN when last listed in 1999. This data may not match . 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 02472, MA

Sale history for 19-21 Porter St

Tax history for 19-21 Porter 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 02472

Home values near 19-21 Porter St

More real estate resources