OFF MARKET

Off market feb 2025 for $590K

$595,176

Est. refi paymentEst. refi $1,989/mo

•

1,306

sq ft

3 Seal Hbr #635, Winthrop, MA 02152

About this home

Welcome to Seal Harbor 3. This spacious 2-bedroom, 2-bathroom waterfront condo offers stunning, panoramic views of the water and beyond. Located in a sought-after building, this unit presents a fantastic opportunity to create your dream home. While it’s in original condition, it’s ready for your personal touch and renovation ideas.With ample natural light, an open layout, and generous living space this condo is perfect for those looking to customize their living space to their exact specifications. Enjoy breathtaking views from nearly every room, and take full advantage of the vibrant waterfront lifestyle. Seal Harbor is a lifestyle which offers 24/7 concierge, outdoor heated pool, indoor rooftop lap pool, sundeck with Boston skyline views, fitness facility and so much more. Don’t miss your chance to own a piece of prime real estate with limitless potential – schedule your showing today! Seller welcomes offers with requests for buyer concessions.

CondoProperty Type

1987Year Built

$456Est. Price/Sq.Ft.

1 car garageParking

Listed by Cathie Curran • Charlesgate Realty Group, llc

Bought with Mark Carangelo • Mark Carangelo

Redfin checked: 2 minutes ago

•Source:MLS PIN #73321921

Redfin Estimate

$595,176

$5,176 since sold in February 2025$7,000 since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 8.3% lower 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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Earn from this home

Sell

$106,679

Est. take-home

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Refinance

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 Hbr #635

Date

Event

Price

MLS PIN #73321921

Feb 19, 2025

Sold

$590,000

$452/sq ft

Jan 6, 2025

Contingent

—

Dec 30, 2024

Listed

$600,000

$459/sq ft

Public Records

Jun 12, 2009

Sold

$300,000

$230/sq ft

MLS PIN #30452306

Nov 30, 2000

Sold

$305,000

$234/sq ft

Oct 13, 2000

Listing Removed

—

Oct 9, 2000

Listed

$310,000

$237/sq ft

Public Records

Jun 6, 1988

Sold

$252,000

$193/sq ft

Year

Property tax

Land + Additions

Assessment*

2023

$5,539 (+0.9%)

$517,700

2022

$5,487 (−2.1%)

$466,600

2021

$5,606 (+3.6%)

$442,100

2020

$5,413 (−1.1%)

$428,900

2019

$5,475 (−3.0%)

$415,400

2018

$5,647 (+2.9%)

$398,800

2017

$5,486 (−1.9%)

$380,700

2016

$5,593 (+18.7%)

$363,900

2014

$4,713 (−1.6%)

$302,500

2013

$4,791 (+2.9%)

$321,300

2012

$4,656 (+7.8%)

$321,300

2011

$4,318 (−9.5%)

$312,900

2010

$4,773 (+20.8%)

$375,800

2009

$3,950

$396,200

Tax history for 3 Seal Hbr #635

Year

Property tax

Land + Additions

Assessment*

2023

$5,539 (+0.9%)

$517,700

2022

$5,487 (−2.1%)

$466,600

2021

$5,606 (+3.6%)

$442,100

2020

$5,413 (−1.1%)

$428,900

2019

$5,475 (−3.0%)

$415,400

2018

$5,647 (+2.9%)

$398,800

2017

$5,486 (−1.9%)

$380,700

2016

$5,593 (+18.7%)

$363,900

2014

$4,713 (−1.6%)

$302,500

2013

$4,791 (+2.9%)

$321,300

2012

$4,656 (+7.8%)

$321,300

2011

$4,318 (−9.5%)

$312,900

2010

$4,773 (+20.8%)

$375,800

2009

$3,950

$396,200

*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.

1,306

Year built

1987

Style

Condo/Co-op

County

APN

1425380

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 21, 2023.

Property details

Parking

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

Interior

Master Bedroom Information
Features: Bathroom - 3/4,Bathroom - Double Vanity/Sink,Walk-In Closet(s),Flooring - Wall to Wall Carpet,Double Vanity

Bedroom #2 Information
Features: Walk-In Closet(s),Flooring - Wall to Wall Carpet

Bathroom Information
# of Bathrooms (Full): 2
Master Bathroom Features: Yes

Bathroom #1 Information
Features: Bathroom - Double Vanity/Sink,Walk-In Closet(s)

Bathroom #2 Information
Features: Bathroom - Half,Bathroom - 3/4

Living Room Information
Features: Balcony / Deck,Open Floorplan

Kitchen Information
Features: Stainless Steel Appliances

Basement Information
Basement: Y

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

Interior Features
# of Rooms (Total): 5
Flooring: Wood, Tile
Interior Features: Elevator

Exterior

Building Information
Building Name: Seal Harbor
Building Area (Total): 1,306
Construction Materials: Brick
StructureType: High-Rise
Stories (Total): 1
Year Built Source: Public Records
Year Built Details: Actual
Lead Paint: None

Exterior Features
Roof: Rubber
Exterior Features: Balcony, Hot Tub/Spa, Gazebo, Outdoor Shower, Professional Landscaping, Tennis Court(s)

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

Property Information
PropertySubType: Condominium
Property AttachedYN: Yes
Entry Level: 6
Entry Location: Unit Placement(Upper,Front)
Security Features: Concierge
Other Structures: Gazebo
Has Waterview
Ocean, Public, Sound, Walk to

Lot Information
WaterfrontYN: Yes

Financial

Tax Information
Tax Annual Amount: $5,534
Tax Year: 2024

Utilities

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

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

Location

HOA Information
Association Fee: $886
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), Fitness Center, Sauna/Steam, Clubroom, Trail(s), Storage, Clubhouse

Location Information
Directions: Google Directions.
UnparsedAddress: 3 Seal Harbor # 635, 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, Bike Path, Conservation Area, Marina, Public School
Pets Allowed: Yes w/ Restrictions

Public facts

Beds: 2
Baths: 2.0
Sq. Ft.: 1,306
Stories: 1.0
Lot Size: —
Style: Condo/Co-op
Year Built: 1987
Year Renovated: 1989
County: —
APN: 1425380

Home facts updated by county records on Jul 20, 2023

Other

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

$566,000 – $685,000

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OPEN TODAY, 11AM TO 12:30PM

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Home values near 3 Seal Hbr #635

Data from public records.

Address	Redfin Estimate
3 Seal Harbor Road Unit 134, Winthrop, MA 1 Beds \| 1 Baths \| 897 Sq. Ft.	$456,973
3 Seal Harbor Road Unit 235, Winthrop, MA 2 Beds \| 2 Baths \| 1306 Sq. Ft.	$624,714
3 Seal Harbor Road Unit 244, Winthrop, MA 2 Beds \| 2 Baths \| 1302 Sq. Ft.	$590,550
3 Seal Harbor Road Unit 335, Winthrop, MA 2 Beds \| 2 Baths \| 1306 Sq. Ft.	$754,789
3 Seal Harbor Road Unit 431, Winthrop, MA 1 Beds \| 1.5 Baths \| 1010 Sq. Ft.	$520,105
3 Seal Harbor Road Unit 444, Winthrop, MA 2 Beds \| 2 Baths \| 1422 Sq. Ft.	$638,738
3 Seal Harbor Road Unit 541, Winthrop, MA 1 Beds \| 1 Baths \| 871 Sq. Ft.	$497,982

Address	Redfin Estimate
3 Seal Harbor Road Unit 135, Winthrop, MA 2 Beds \| 2 Baths \| 1370 Sq. Ft.	$588,593
3 Seal Harbor Road Unit 242, Winthrop, MA 2 Beds \| 2 Baths \| 1302 Sq. Ft.	$648,184
3 Seal Harbor Road Unit 246, Winthrop, MA 2 Beds \| 2 Baths \| 1202 Sq. Ft.	$568,163
3 Seal Harbor Road Unit 346, Winthrop, MA 2 Beds \| 2 Baths \| 1202 Sq. Ft.	$641,011
3 Seal Harbor Road Unit 441, Winthrop, MA 1 Beds \| 1 Baths \| 871 Sq. Ft.	$471,857
3 Seal Harbor Road Unit 445, Winthrop, MA 2 Beds \| 2 Baths \| 1310 Sq. Ft.	$584,906
3 Seal Harbor Road Unit 545, Winthrop, MA 2 Beds \| 2 Baths \| 1310 Sq. Ft.	$554,422

Address	Redfin Estimate
3 Seal Harbor Road Unit 234, Winthrop, MA 1 Beds \| 1 Baths \| 890 Sq. Ft.	$497,548
3 Seal Harbor Road Unit 243, Winthrop, MA 1 Beds \| 1 Baths \| 838 Sq. Ft.	$448,793
3 Seal Harbor Road Unit 332, Winthrop, MA 1 Beds \| 2 Baths \| 1263 Sq. Ft.	$542,991
3 Seal Harbor Road Unit 348, Winthrop, MA 2 Beds \| 2 Baths \| 1320 Sq. Ft.	$660,353
3 Seal Harbor Road Unit 442, Winthrop, MA 2 Beds \| 2 Baths \| 1332 Sq. Ft.	$603,228
3 Seal Harbor Road Unit 536, Winthrop, MA 3 Beds \| 2.5 Baths \| 1674 Sq. Ft.	$926,223
3 Seal Harbor Road Unit 637, Winthrop, MA 2 Beds \| 2 Baths \| 1318 Sq. Ft.	$678,292

Property information provided by MLS PIN when last listed in 2024. This data may not match . Learn more.

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