SOLD APR 3, 2026

Off market apr 2026 for $515K

$524,687

Est. refi paymentEst. refi $2,939/mo

•

840

sq ft

3 Seal Harbor Rd #634, Winthrop, MA 02152

About this home

Situated at the ocean's edge in Winthrop, the Seal Harbor condominium community is located just fifteen minutes from Boston's financial district. The building is amenity-rich offering 24/7 concierge, on-site management, secure underground garage parking, a heated outdoor pool with shower, bathrooms, full poolhouse kitchen, an outdoor Jacuzzi, and two gas grills. Residents also enjoy year-round access to an indoor pool on the 9th floor, complete with dramatic views, a new fitness center, as well as an indoor Jacuzzi and sauna with a large deck-perfect for viewing Independence Day fireworks! 3 Seal Harbor boasts three separate function rooms, where guests are able to enjoy table tennis, billiards and television. And in addition to the mature grounds, owners also have access to tennis courts, basement storage, bicycle storage, water sports storage and a full recycling facility. Unparalleled for its location, value, amenities, breathtaking views and proximity to Boston.NO DOGS PERMITTED.

CondoProperty Type

1987Year Built

$625Est. Price/Sq.Ft.

1 car garageParking

Listed by Mark Carangelo • Mark Carangelo

Bought with Pratt Properties Team • Century 21 North East

Redfin checked: 2 minutes ago

•Source:MLS PIN #73495543

Redfin Estimate

$524,687

$9,687 since sold in April 2026$5,000 since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 1.4% higher than the average sale price ($517K) of 6 comparable homes.

SOLD MAY 19, 2026
$630,000
A
1 bed1 bath910 sq ft
3 Seal Harbor Rd #133, Winthrop, MA 02152
SOLD AUG 20, 2026
$550,000
B
1 bed1 bath994 sq ft
1 Seal Harbor Rd #300, Winthrop, MA 02152
SOLD JUN 23, 2026
$575,000
C
1 bed1 bath1,005 sq ft
1 Seal Harbor Rd #401, Winthrop, MA 02152
SOLD SEP 11, 2026
$370,000
D
2 beds1 bath782 sq ft
1000 Governor's Dr #15, Winthrop, MA 02152
SOLD SEP 21, 2026
$430,000
E
1 bed1 bath875 sq ft
350 Revere Beach Blvd Unit 7S, Revere, MA 02151
SOLD MAY 15, 2026
$549,000
F
1 bed1 bath1,005 sq ft
1 Seal Harbor Rd #701, Winthrop, MA 02152

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$89,684

Est. take-home

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Est. cash available

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Market trends in 02152, MA

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

99.8%

+0.1% MoM

Median sale price

$629K

$6K MoM

Avg. days on market

23d

3 days MoM

Recently sold homes

5 MoM

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OPEN SUN, 11:30AM TO 1PM
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Provided by Redfin

Sale history for 3 Seal Harbor Rd #634

Date

Event

Price

MLS PIN #73495543

Apr 3, 2026

Sold

$515,000

$613/sq ft

Apr 2, 2026

Listed

$525,000

$625/sq ft

MLS PIN #72923457

Aug 22, 2022

Sold

$430,000

$512/sq ft

Nov 29, 2021

Listed

$429,000

$511/sq ft

+16

Situated at the ocean's edge in Winthrop, MA, the Seal Harbor condominium community is located just fifteen minutes from Boston's financial district. The buildings are amenity-rich, offering 24/7 concierge, on-site management, secure underground garage parking, a heated outdoor pool with shower, bathrooms, full poolhouse kitchen, an outdoor Jacuzzi, and two gas grills. Residents also enjoy year-round access to an indoor pool on the 9th floor, complete with dramatic views, a full fitness center, as well as an indoor Jacuzzi and sauna with a large deck... perfect for viewing Independence Day fireworks! Seal Harbor Three boasts three separate function rooms, where guests are able to enjoy table tennis, billiards and television. And in addition to the mature grounds, owners also have access to tennis courts, private basement storage, bicycle storage, water sports storage and a full recycling facility. Unparalleled for its location, value, amenities, breathtaking views and proximity to Bos

Public Records

Jul 15, 2022

Sold

$430,000

$512/sq ft

MLS PIN #50349576

Nov 1, 1996

Sold

$131,000

$156/sq ft

Oct 15, 1996

Listing Removed

—

Sep 27, 1996

Listed

$139,000

$165/sq ft

Public Records

Feb 9, 1996

Sold

$120,000

$143/sq ft

Public Records

May 2, 1990

Sold

$135,000

$161/sq ft

Year

Property tax

Land + Additions

Assessment*

2023

$4,284 (+0.9%)

$400,400

2022

$4,244 (−2.1%)

$360,900

2021

$4,334 (+3.6%)

$341,800

2020

$4,185 (−1.0%)

$331,600

2019

$4,229 (−1.8%)

$320,900

2018

$4,306 (+3.0%)

$304,100

2017

$4,182 (−1.9%)

$290,200

2016

$4,262 (+18.7%)

$277,300

2014

$3,590 (−0.4%)

$230,400

2013

$3,605 (+2.9%)

$241,800

2012

$3,504 (−2.5%)

$241,800

2011

$3,594 (−6.6%)

$260,400

2010

$3,847 (+28.4%)

$302,900

2009

$2,996

$300,500

Tax history for 3 Seal Harbor Rd #634

Year

Property tax

Land + Additions

Assessment*

2023

$4,284 (+0.9%)

$400,400

2022

$4,244 (−2.1%)

$360,900

2021

$4,334 (+3.6%)

$341,800

2020

$4,185 (−1.0%)

$331,600

2019

$4,229 (−1.8%)

$320,900

2018

$4,306 (+3.0%)

$304,100

2017

$4,182 (−1.9%)

$290,200

2016

$4,262 (+18.7%)

$277,300

2014

$3,590 (−0.4%)

$230,400

2013

$3,605 (+2.9%)

$241,800

2012

$3,504 (−2.5%)

$241,800

2011

$3,594 (−6.6%)

$260,400

2010

$3,847 (+28.4%)

$302,900

2009

$2,996

$300,500

*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

Stories

Lot width

—

Lot depth

—

Lot size

—

Year renovated

1989

Sq. Ft.

840

Year built

1987

Style

Condo/Co-op

County

APN

1425379

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Aug 25, 2023.

Property details

Parking

Parking Information
Has Garage
Has Open Parking
# of Garage Spaces: 1
# of Covered Spaces: 1
Open Parking Spaces: 0
Parking Spaces: 1
AttachedGarageYN: Yes
Parking Features: Attached, Under, Garage Door Opener, Deeded, Off Street, Common, Guest, Paved, Exclusive Parking

Interior

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

Basement Information
Basement: Y

Laundry Information
Laundry Features: Common Area, In Building, In Unit, Electric Dryer Hookup

Appliances
Appliances: Range, Dishwasher, Disposal, Microwave, Refrigerator, Freezer, Washer, Dryer

Interior Features
# of Rooms (Total): 3
Door Features: Insulated Doors, Storm Door(s)
Window Features: Insulated Windows, Storm Window(s)
Flooring: Wood, Tile, Carpet

Exterior

Building Information
Building Name: Seal Harbor
Building Area (Total): 840
Construction Materials: Brick
StructureType: High-Rise
Stories (Total): 1
Year Built Source: Public Records
Year Built Details: Actual
Lead Paint: None

Exterior Features
Fencing: Security
Roof: Rubber
Patio And Porch Features: Deck, Deck - Roof, Deck - Composite, Deck - Access Rights
Exterior Features: Deck, Deck - Roof, Deck - Composite, Deck - Access Rights, Balcony, Hot Tub/Spa, Garden, Gazebo, Outdoor Shower, Professional Landscaping, Sprinkler System, Tennis Court(s)

Pool Information
Has Spa
Pool Features: Association, In Ground, Indoor, Heated
Spa Features: Hot Tub/Spa

Property Information
Accessibility Features: Accessible Entrance
PropertySubType: Condominium
Property AttachedYN: Yes
Above Grade Finished Area: 840
Entry Level: 6
Entry Location: Unit Placement(Upper)
Security Features: Intercom, TV Monitor, Doorman, Security Guard, Security Gate, Concierge
Other Structures: Gazebo
Has Waterview
Bay, Harbor, Ocean, Private

Lot Information
WaterfrontYN: Yes
Waterfront Features: Waterfront, Ocean, Sound, Bay, Harbor, Frontage, Walk to, Access, Bay, Ocean, Direct Access, Sound, Walk to, 3/10 to 1/2 Mile To Beach, Beach Ownership(Public)

Financial

Tax Information
Tax Annual Amount: $4,687.34
Tax Year: 2025

Utilities

Utility Information
Utilities: for Electric Range, for Electric Oven, for Electric Dryer
Sewer: Public Sewer
Water Source: Public
Electric: 110 Volts, Circuit Breakers

Heating & Cooling
Has Heating
Has Cooling
Heating: Forced Air, Electric
Cooling: Central Air, Heat Pump, Individual, Unit Control

Location

HOA Information
Association Fee: $634
Association Fee Frequency: Monthly
Association Fee Includes: Water, Sewer, Insurance, Security, Maintenance Structure, Road Maintenance, Maintenance Grounds, Snow Removal, Trash, Reserve Funds
Association Amenities: Pool, Laundry, Elevator(s), Tennis Court(s), Park, Recreation Facilities, Fitness Center, Sauna/Steam, Clubroom, Trail(s), Beach Rights, Storage, Garden Area, Clubhouse

Location Information
Directions: Left on Spitbrook, right on Daniel Webster
UnparsedAddress: 3 Seal Harbor Rd # 634, Winthrop MA 02152

Community Information
Senior CommunityYN: No
Community Features: Public Transportation, Shopping, Pool, Tennis Court(s), Park, Walk/Jog Trails, Golf, Medical Facility, Conservation Area, Marina, Public School, T-Station
Pets Allowed: Yes w/ Restrictions

Public facts

Beds: 1
Baths: 1.0
Sq. Ft.: 840
Stories: 1.0
Lot Size: —
Style: Condo/Co-op
Year Built: 1987
Year Renovated: 1989
County: —
APN: 1425379

Home facts updated by county records on Aug 25, 2023

Other

Miscellaneous Information
Heat Zones: 2

Listing Information
Exclusions: Dogs
StandardStatus: Closed

Around this home

Schools

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

$499,000 – $604,000

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Home values near 3 Seal Harbor Rd #634

Data from public records.

Address	Redfin Estimate
3 Seal Harbor Rd Apt 237, Winthrop, MA 2 Beds \| 2 Baths \| 1318 Sq. Ft.	$665,564
3 Seal Harbor Rd Apt 334, Winthrop, MA 1 Beds \| 1 Baths \| 840 Sq. Ft.	$515,292

Address	Redfin Estimate
3 Seal Harbor Rd Apt 243, Winthrop, MA 1 Beds \| 1 Baths \| 838 Sq. Ft.	$453,510
3 Seal Harbor Rd Apt 341, Winthrop, MA 1 Beds \| 1 Baths \| 871 Sq. Ft.	$479,494

Address	Redfin Estimate
3 Seal Harbor Rd Apt 246, Winthrop, MA 2 Beds \| 2 Baths \| 1202 Sq. Ft.	$578,853
3 Seal Harbor Rd Apt 344, Winthrop, MA 2 Beds \| 2 Baths \| 1302 Sq. Ft.	$638,743

Property information provided by MLS PIN when last listed in 2026. This data may not match . Learn more.

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