Google satellite image for 3 Seal Harbor Rd #431, Winthrop, MA 02152

Off market nov 1998 for $188K

$520,105

Est. refi paymentEst. refi $1,373/mo

•

1,010

sq ft

3 Seal Harbor Rd #431, Winthrop, MA 02152

About this home

CondoProperty Type

1988Year Built

$515Est. Price/Sq.Ft.

2 spacesParking

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

Bought with Non Member • Landmark Realty

Redfin checked: a minute ago

•Source:MLS PIN #30247963

Redfin Estimate

$520,105

$332K since sold in November 1998$4,000 since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 5.1% lower than the average sale price ($548K) of 6 comparable homes.

SOLD AUG 20, 2026
$550,000
A
1 bed1 bath994 sq ft
1 Seal Harbor Rd #300, Winthrop, MA 02152
SOLD JUN 23, 2026
$575,000
B
1 bed1 bath1,005 sq ft
1 Seal Harbor Rd #401, Winthrop, MA 02152
SOLD MAY 15, 2026
$549,000
C
1 bed1 bath1,005 sq ft
1 Seal Harbor Rd #701, Winthrop, MA 02152
SOLD MAY 19, 2026
$630,000
D
1 bed1 bath910 sq ft
3 Seal Harbor Rd #133, Winthrop, MA 02152
SOLD BY REDFIN OCT 23, 2026
$623,000
E
2 beds2 baths1,302 sq ft
3 Seal Harbor Rd #342, Winthrop, MA 02152
SOLD AUG 28, 2026
$360,000
F
2 beds1 bath977 sq ft
1000 Governors Dr #4, Winthrop, MA 02152

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$476,329

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
See all

Provided by Redfin

Sale history for 3 Seal Harbor Rd #431

Year

Property tax

Land + Additions

Assessment*

2023

$4,535 (+0.8%)

$423,800

2022

$4,498 (−2.2%)

$382,500

2021

$4,599 (+3.5%)

$362,700

2020

$4,442 (−1.2%)

$352,000

2019

$4,494 (−3.1%)

$341,000

2018

$4,639 (+2.9%)

$327,600

2017

$4,510 (+2.3%)

$313,000

2016

$4,407 (+18.2%)

$286,700

2014

$3,730 (−1.5%)

$239,400

2013

$3,786 (+2.9%)

$253,900

2012

$3,679 (−4.2%)

$253,900

2011

$3,842 (−3.6%)

$278,400

2010

$3,984 (+33.4%)

$313,700

2009

$2,986

$299,500

Tax history for 3 Seal Harbor Rd #431

Year

Property tax

Land + Additions

Assessment*

2023

$4,535 (+0.8%)

$423,800

2022

$4,498 (−2.2%)

$382,500

2021

$4,599 (+3.5%)

$362,700

2020

$4,442 (−1.2%)

$352,000

2019

$4,494 (−3.1%)

$341,000

2018

$4,639 (+2.9%)

$327,600

2017

$4,510 (+2.3%)

$313,000

2016

$4,407 (+18.2%)

$286,700

2014

$3,730 (−1.5%)

$239,400

2013

$3,786 (+2.9%)

$253,900

2012

$3,679 (−4.2%)

$253,900

2011

$3,842 (−3.6%)

$278,400

2010

$3,984 (+33.4%)

$313,700

2009

$2,986

$299,500

*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

1.5

Stories

Lot width

—

Lot depth

—

Lot size

—

Year renovated

1989

Sq. Ft.

1,033

Year built

1987

Style

Condo/Co-op

County

APN

1425346

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 21, 2023.

Property details

Parking

Parking Information
Has Garage
Parking Spaces: 2
AttachedGarageYN: Yes
Parking Features: Under, Garage Door Opener, Tandem, Deeded, Guest

Interior

Master Bedroom Information
Area: 180
Length: 12
Width: 15
Level: First

Bathroom Information
# of Bathrooms (Full): 1
# of Bathrooms (Half): 1
Master Bathroom Features: Yes

Bathroom #1 Information
Level: First
Features: Bathroom - Full

Bathroom #2 Information
Level: First
Features: Bathroom - Half

Living Room Information
Area: 240
Length: 15
Width: 16
Level: First

Dining Room Information
Area: 120
Length: 10
Width: 12
Level: First

Kitchen Information
Level: First

Basement Information
Basement: Y

Interior Features
# of Rooms (Total): 4
Door Features: Insulated Doors
Window Features: Insulated Windows
Flooring: Wood, Tile, Carpet

Exterior

Building Information
Building Name: Seal Harbor Condominiums
Building Area (Total): 1,010
Construction Materials: Brick
StructureType: High-Rise
Stories (Total): 1
Year Built Source: Owner
Year Built Effective: 0
Year Built Details: Approximate
Lead Paint: None

Exterior Features
Roof: Rubber

Pool Information
Pool Features: Association, In Ground, Heated, Lap

Property Information
PropertySubType: Condominium
Property AttachedYN: Yes
Common Walls: Corner
Entry Level: 4
Entry Location: Unit Placement(Upper)
Security Features: Intercom, TV Monitor, Doorman

Lot Information
WaterfrontYN: Yes

Financial

Tax Information
Tax Annual Amount: $1,878

Utilities

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

Heating & Cooling
Has Heating
Has Cooling
Heating: Heat Pump, Electric
Cooling: Heat Pump

Location

HOA Information
Association Fee: $351
Association Fee Includes: Water, Sewer, Insurance, Security, Maintenance Structure, Road Maintenance, Maintenance Grounds, Snow Removal
Association Amenities: Pool, Laundry, Elevator(s), Tennis Court(s), Park, Paddle Tennis, Fitness Center, Sauna/Steam, Clubroom, Trail(s), Boat Dock, Storage

Location Information
Directions: NEAR GROVERS AVE, IN WINTHROP HIGHLANDS
UnparsedAddress: 3 Seal Harbor Road # 431, Winthrop MA 02152

Community Information
Senior CommunityYN: No
Community Features: Public Transportation, Shopping, Pool, Tennis Court(s), Park, Walk/Jog Trails, Golf, Medical Facility, Laundromat

Public facts

Beds: 1
Baths: 1.5
Sq. Ft.: 1,033
Stories: 1.0
Lot Size: —
Style: Condo/Co-op
Year Built: 1987
Year Renovated: 1989
County: —
APN: 1425346

Home facts updated by county records on Jul 20, 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 • 02152

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

$495,000 – $599,000

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OPEN TODAY, 11AM TO 12:30PM

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OPEN TODAY, 11AM TO 12:30PM

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115 Read St #2, Winthrop, MA 02152

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Home values near 3 Seal Harbor Rd #431

Data from public records.

Address	Redfin Estimate
3 Seal Harbor Road Unit 132, Winthrop, MA 1 Beds \| 2 Baths \| 1341 Sq. Ft.	$560,362
3 Seal Harbor Road Unit 232, Winthrop, MA 1 Beds \| 2 Baths \| 1263 Sq. Ft.	$619,687
3 Seal Harbor Road Unit 246, Winthrop, MA 2 Beds \| 2 Baths \| 1202 Sq. Ft.	$568,163
3 Seal Harbor Road Unit 433, Winthrop, MA 2 Beds \| 2 Baths \| 1286 Sq. Ft.	$535,172
3 Seal Harbor Road Unit 537, Winthrop, MA 2 Beds \| 2 Baths \| 1309 Sq. Ft.	$707,914
3 Seal Harbor Road Unit 634, Winthrop, MA 1 Beds \| 1 Baths \| 840 Sq. Ft.	$503,747
3 Seal Harbor Road Unit 648, Winthrop, MA 2 Beds \| 2 Baths \| 1302 Sq. Ft.	$705,337

Address	Redfin Estimate
3 Seal Harbor Road Unit 136, Winthrop, MA 2 Beds \| 2.5 Baths \| 1505 Sq. Ft.	$707,159
3 Seal Harbor Road Unit 234, Winthrop, MA 1 Beds \| 1 Baths \| 890 Sq. Ft.	$497,548
3 Seal Harbor Road Unit 347, Winthrop, MA 2 Beds \| 2 Baths \| 1320 Sq. Ft.	$596,742
3 Seal Harbor Road Unit 436, Winthrop, MA 3 Beds \| 2.5 Baths \| 1674 Sq. Ft.	$1,118,670
3 Seal Harbor Road Unit 631, Winthrop, MA 1 Beds \| 1.5 Baths \| 1033 Sq. Ft.	$530,012
3 Seal Harbor Road Unit 635, Winthrop, MA 2 Beds \| 2 Baths \| 1306 Sq. Ft.	$595,176
3 Seal Harbor Road Unit 733, Winthrop, MA 2 Beds \| 2 Baths \| 1286 Sq. Ft.	$648,956

Address	Redfin Estimate
3 Seal Harbor Road Unit 231, Winthrop, MA 1 Beds \| 1.5 Baths \| 1033 Sq. Ft.	$519,179
3 Seal Harbor Road Unit 235, Winthrop, MA 2 Beds \| 2 Baths \| 1306 Sq. Ft.	$624,714
3 Seal Harbor Road Unit 432, Winthrop, MA 1 Beds \| 2 Baths \| 1263 Sq. Ft.	$551,103
3 Seal Harbor Road Unit 445, Winthrop, MA 2 Beds \| 2 Baths \| 1310 Sq. Ft.	$584,906
3 Seal Harbor Road Unit 633, Winthrop, MA 2 Beds \| 2 Baths \| 1286 Sq. Ft.	$591,417
3 Seal Harbor Road Unit 636, Winthrop, MA 3 Beds \| 2.5 Baths \| 1674 Sq. Ft.	$817,481
3 Seal Harbor Road Unit 742, Winthrop, MA 2 Beds \| 2 Baths \| 1283 Sq. Ft.	$677,992

Property information provided by MLS PIN when last listed in 1998. This data may not match . Learn more.

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