Off market jul 1997 for $248K

$1,015,500

Est. refi paymentEst. refi $1,645/mo

•

1,318

sq ft

3 Seal Hbr Unit 437,3, Winthrop, MA

About this home

CondoProperty Type

1988Year Built

$770Est. Price/Sq.Ft.

1 car garageParking

Listed by Marc Heyman • Coldwell Banker Residential Brokerage - Boston - Back Bay

Redfin checked: 2 minutes ago

•Source:MLS PIN #50358138

Redfin Estimate

$1,015,500

$768K since sold in July 1997$1,000 since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 56.5% higher than the average sale price ($649K) of 6 comparable homes.

SOLD BY REDFIN OCT 23, 2026
$623,000
A
2 beds2 baths1,302 sq ft
3 Seal Harbor Rd #342, Winthrop, MA 02152
SOLD SEP 15, 2026
$715,500
B
2 beds2 baths1,414 sq ft
1 Seal Hbr #700, Winthrop, MA 02152
SOLD AUG 26, 2026
$589,000
C
2 beds2 baths1,241 sq ft
1 Seal Harbor Rd #116, Winthrop, MA 02152
SOLD MAY 7, 2026
$632,000
D
2 beds2 baths1,302 sq ft
3 Seal Hbr #344, Winthrop, MA 02152
SOLD MAR 2, 2026
$670,000
E
2 beds2 baths1,327 sq ft
3 Seal Harbor Rd #137, Winthrop, MA 02152
SOLD OCT 15, 2026
$665,000
F
2 beds2 baths1,471 sq ft
550 Pleasant St #510, Winthrop, MA 02152

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$957,172

Est. take-home

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Est. cash available

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Market trends in 02152, MA

Last updated October 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

99.0%

0.9% MoM

Median sale price

$715K

$86K MoM

Avg. days on market

27d

4 days MoM

Recently sold homes

3 MoM

New listings for sale

FOR SALE BY OWNER
$675,000
3 beds1 bath1,198 sq ft
25 North Ave, Winthrop, MA 02152
OPEN TODAY, 11AM TO 12:30PM
$699,000
3 beds1.5 baths2,053 sq ft
65 Sunnyside Ave, Winthrop, MA 02152
OPEN TODAY, 12PM TO 1:30PM
$730,000
3 beds1.5 baths1,406 sq ft
9 Lincoln St, Winthrop, MA 02152
$835,000
6 beds3 baths2,424 sq ft
11-15 Sturgis St, Winthrop, MA 02152
$365,000
2 beds1 bath782 sq ft
200 Governors Dr #19, Winthrop, MA 02152
OPEN TODAY, 12PM TO 1:30PM
$865,000
2 beds2.5 baths1,806 sq ft
1001 Shirley St #2, Winthrop, MA 02152
OPEN TODAY, 11AM TO 12:30PM
$649,900
3 beds2 baths1,515 sq ft
19 Beal St, Winthrop, MA 02152
OPEN TODAY, 11AM TO 12:30PM
$869,000
3 beds2 baths1,925 sq ft
115 Read St #1, Winthrop, MA 02152
OPEN TODAY, 11AM TO 12:30PM
$889,000
3 beds2 baths2,916 sq ft
115 Read St #2, Winthrop, MA 02152
OPEN TODAY, 11:30AM TO 1PM
$629,900
2 beds1 bath1,166 sq ft
96 Marshall St, Winthrop, MA 02152

Provided by Redfin

Sale history for 3 Seal Hbr Unit 437,3

Year

Property tax

Land + Additions

Assessment*

2023

$7,011 (+0.9%)

$655,200

2022

$6,948 (−2.1%)

$590,800

2021

$7,100 (+3.6%)

$559,900

2020

$6,855 (−1.1%)

$543,200

2019

$6,933 (−0.7%)

$526,000

2018

$6,984 (+2.9%)

$493,200

2017

$6,786 (−11.4%)

$470,900

2016

$7,660 (+18.6%)

$498,400

2014

$6,458 (+0.7%)

$414,500

2013

$6,413 (+2.9%)

$430,100

2012

$6,232 (+41.6%)

$430,100

2011

$4,402 (−5.5%)

$319,000

2010

$4,658 (+24.3%)

$366,800

2009

$3,746

$375,700

Tax history for 3 Seal Hbr Unit 437,3

Year

Property tax

Land + Additions

Assessment*

2023

$7,011 (+0.9%)

$655,200

2022

$6,948 (−2.1%)

$590,800

2021

$7,100 (+3.6%)

$559,900

2020

$6,855 (−1.1%)

$543,200

2019

$6,933 (−0.7%)

$526,000

2018

$6,984 (+2.9%)

$493,200

2017

$6,786 (−11.4%)

$470,900

2016

$7,660 (+18.6%)

$498,400

2014

$6,458 (+0.7%)

$414,500

2013

$6,413 (+2.9%)

$430,100

2012

$6,232 (+41.6%)

$430,100

2011

$4,402 (−5.5%)

$319,000

2010

$4,658 (+24.3%)

$366,800

2009

$3,746

$375,700

*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

—

Year renovated

1989

Sq. Ft.

1,318

Year built

1987

Style

Condo/Co-op

County

APN

1425352

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Aug 25, 2023.

Property details

Parking

Parking Information
Has Garage
# of Garage Spaces: 1
# of Covered Spaces: 1
AttachedGarageYN: Yes
Parking Features: Under

Interior

Bathroom Information
# of Bathrooms (Full): 2

Bathroom #1 Information
Level: First

Basement Information
Basement: Y

Interior Features
# of Rooms (Total): 5

Exterior

Building Information
Building Area (Total): 1,318
Year Built Effective: 0

Exterior Features
Roof: Rubber

Property Information
PropertySubType: Condominium
Entry Level: 4

Financial

Tax Information
Tax Annual Amount: $2,139

Utilities

Utility Information
Sewer: Public Sewer
Water Source: Public, City/Town Water, City/Town Sewer

Heating & Cooling
Has Heating
Heating: Heat Pump, Electric

Location

HOA Information
Association Fee: $520

Location Information
Directions: GROVERS AVE
UnparsedAddress: 3 Seal Harbor # 3, Winthrop MA

Community Information
Senior CommunityYN: No

Public facts

Beds: 2
Baths: 2.0
Sq. Ft.: 1,318
Stories: 1.0
Lot Size: —
Style: Condo/Co-op
Year Built: 1987
Year Renovated: 1989
County: —
APN: 1425352

Home facts updated by county records on Aug 25, 2023

Other

Miscellaneous Information
Heat Zones: 1

Listing Information
StandardStatus: Closed

Around this home

Schools

K - 12
Preschool & daycare

William P. Gorman/Fort Banks Elementary School

Public PreK-2 • Assigned • 0.7mi

Winthrop Middle School

Public 6-8 • Assigned • 0.8mi

8/10

Winthrop Senior High School

Public 9-12 • Assigned • 0.8mi

5/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Historical weather

Winthrop, MA • undefined

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

$965,000 – $1.17M

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Home values near 3 Seal Hbr Unit 437,3

Data from public records.

Address	Redfin Estimate
3 Seal Harbor Rd Apt 233, Winthrop, MA 2 Beds \| 2 Baths \| 1286 Sq. Ft.	$612,832
3 Seal Harbor Rd Apt 241, Winthrop, MA 1 Beds \| 1 Baths \| 871 Sq. Ft.	$455,236
3 Seal Harbor Rd Apt 334, Winthrop, MA 1 Beds \| 1 Baths \| 840 Sq. Ft.	$511,394
3 Seal Harbor Rd Apt 536, Winthrop, MA 3 Beds \| 2.5 Baths \| 1674 Sq. Ft.	$926,223
3 Seal Harbor Rd Apt 545, Winthrop, MA 2 Beds \| 2 Baths \| 1310 Sq. Ft.	$554,422
3 Seal Harbor Rd Apt 734, Winthrop, MA 1 Beds \| 1 Baths \| 840 Sq. Ft.	$502,973
3 Seal Harbor Rd Apt 745, Winthrop, MA 2 Beds \| 2 Baths \| 1310 Sq. Ft.	$599,980

Address	Redfin Estimate
3 Seal Harbor Rd Apt 236, Winthrop, MA 3 Beds \| 2.5 Baths \| 1674 Sq. Ft.	$812,081
3 Seal Harbor Rd Apt 248, Winthrop, MA 2 Beds \| 2 Baths \| 1320 Sq. Ft.	$660,607
3 Seal Harbor Rd Apt 341, Winthrop, MA 1 Beds \| 1 Baths \| 871 Sq. Ft.	$455,695
3 Seal Harbor Rd Apt 543, Winthrop, MA 1 Beds \| 1 Baths \| 838 Sq. Ft.	$488,197
3 Seal Harbor Rd Apt 547, Winthrop, MA 2 Beds \| 2 Baths \| 1320 Sq. Ft.	$581,998
3 Seal Harbor Rd Apt 736, Winthrop, MA 3 Beds \| 2.5 Baths \| 1674 Sq. Ft.	$851,785
3 Seal Harbor Rd Apt 747, Winthrop, MA 2 Beds \| 2 Baths \| 1320 Sq. Ft.	$589,077

Address	Redfin Estimate
3 Seal Harbor Rd Apt 237, Winthrop, MA 2 Beds \| 2 Baths \| 1318 Sq. Ft.	$653,080
3 Seal Harbor Rd Apt 331, Winthrop, MA 1 Beds \| 1.5 Baths \| 1033 Sq. Ft.	$468,631
3 Seal Harbor Rd Apt 444, Winthrop, MA 2 Beds \| 2 Baths \| 1422 Sq. Ft.	$638,738
3 Seal Harbor Rd Apt 544, Winthrop, MA 2 Beds \| 2 Baths \| 1302 Sq. Ft.	$625,086
3 Seal Harbor Rd Apt 645, Winthrop, MA 2 Beds \| 2 Baths \| 1310 Sq. Ft.	$580,531
3 Seal Harbor Rd Apt 741, Winthrop, MA 1 Beds \| 1 Baths \| 871 Sq. Ft.	$440,466
3 Seal Harbor Rd Apt 841, Winthrop, MA 1 Beds \| 1 Baths \| 871 Sq. Ft.	$428,113

Property information provided by MLS PIN when last listed in 1996. This data may not match . Learn more.

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