OFF MARKET

Off market dec 2024 for $711K

$669,720

Est. refi paymentEst. refi $3,717/mo

•

1,302

sq ft

3 Seal Hbr #644, Winthrop, MA 02152

About this home

Discover Seal Harbor. 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. This home has one underground garage parking spots.

CondoProperty Type

1987Year Built

$514Est. Price/Sq.Ft.

1 car garageParking

Listed by Mark Carangelo • Mark Carangelo

Bought with Mark Carangelo • Mark Carangelo

Redfin checked: a few seconds ago

•Source:MLS PIN #73311364

Redfin Estimate

$669,720

$41K since sold in December 2024$17K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 3.2% 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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$85,529

Est. take-home

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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

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9 Lincoln St, Winthrop, MA 02152
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2 beds1 bath782 sq ft
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OPEN TODAY, 12PM TO 1:30PM
$865,000
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3 beds2 baths1,925 sq ft
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See all

Provided by Redfin

Sale history for 3 Seal Hbr #644

Date

Event

Price

MLS PIN #73311364

Dec 19, 2024

Sold

$711,000

$546/sq ft

Nov 10, 2024

Listed

$689,000

$529/sq ft

MLS PIN #72486295

Jul 22, 2019

Sold

$498,000

$382/sq ft

Jun 27, 2019

Pending

—

Jun 13, 2019

Pending

—

Jun 4, 2019

Price Changed

$525,000

$403/sq ft

Jun 3, 2019

Relisted

—

Jun 3, 2019

Listing Removed

—

May 23, 2019

Price Changed

$545,000

$419/sq ft

May 5, 2019

Price Changed

$569,000

$437/sq ft

Apr 23, 2019

Listed

$589,900

$453/sq ft

+21

OCEANFRONT with Spectacular Ocean Views from every room!!! Seal Harbor Three Condominiums offer luxury oceanfront living! This 1302 sq ft condo has 2 bedrooms, 2 baths, private balcony, hdwd floors in liv, kit/ dining areas. The open kit design is equipped with an oversize custom built island/peninsula that's amazing for entertaining! Concierge 24 hrs a day, garage parking, plenty of guest parking, indoor lap pool, outside heated pool, health club, function rm, roof deck w/ incredible ocean and skyline views of Boston, tennis courts, and in unit laundry are just a few of the many amenities offered. Most recent unit updates include a new heating system in 2014, new h/w tank in 2018. Building updates include a brand new roof, two new elevators and two roof top HVACs. Move just in time to enjoy the summer sun! Winthrop has several beaches, a Ferry to Boston, Marinas, 3 Yacht clubs, Golf Course, new Schools, delicious Restaurants and much more!

MLS PIN #70918979

Oct 30, 2009

Sold

$352,000

$270/sq ft

Sep 13, 2009

Contingent

—

Sep 2, 2009

Price Changed

$369,900

$284/sq ft

May 14, 2009

Listed

$389,900

$299/sq ft

NEW PRICE...Open your door & immediately sea the ocean, two bedroom/two full bath 6th fl.waterfront unit at popular Seal Harbor. Custom built island/counter w/storage separates kitchen from living room & is perfect for entertaining. Beautiful hardwood floors in living area & w/w in bedrooms. Master has lg. walk in closet & bath w/double sinks. Enjoy unobstructed ocean view! Complex offers; 24 hr. concierge, extra storage, in/out pools, exercise/sauna, etc.

Public Records

Dec 17, 1997

Sold

$220,000

$169/sq ft

Public Records

Jan 4, 1989

Sold

$215,000

$165/sq ft

Year

Property tax

Land + Additions

Assessment*

2023

$5,888 (+0.9%)

$550,300

2022

$5,833 (−2.1%)

$496,000

2021

$5,958 (+3.6%)

$469,900

2020

$5,753 (−1.1%)

$455,900

2019

$5,818 (−1.8%)

$441,400

2018

$5,927 (+2.9%)

$418,600

2017

$5,758 (−1.9%)

$399,600

2016

$5,870 (+18.7%)

$381,900

2014

$4,947 (−0.4%)

$317,500

2013

$4,968 (+2.9%)

$333,200

2012

$4,828 (+8.5%)

$333,200

2011

$4,451 (−7.0%)

$322,500

2010

$4,785 (+19.6%)

$376,800

2009

$4,002

$401,400

Tax history for 3 Seal Hbr #644

Year

Property tax

Land + Additions

Assessment*

2023

$5,888 (+0.9%)

$550,300

2022

$5,833 (−2.1%)

$496,000

2021

$5,958 (+3.6%)

$469,900

2020

$5,753 (−1.1%)

$455,900

2019

$5,818 (−1.8%)

$441,400

2018

$5,927 (+2.9%)

$418,600

2017

$5,758 (−1.9%)

$399,600

2016

$5,870 (+18.7%)

$381,900

2014

$4,947 (−0.4%)

$317,500

2013

$4,968 (+2.9%)

$333,200

2012

$4,828 (+8.5%)

$333,200

2011

$4,451 (−7.0%)

$322,500

2010

$4,785 (+19.6%)

$376,800

2009

$4,002

$401,400

*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.

1,302

Year built

1987

Style

Condo/Co-op

County

APN

1425386

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
AttachedGarageYN: Yes
Parking Features: Attached, Under, Garage Door Opener, Deeded, Off Street, Tandem, Common, Guest, Paved, Exclusive Parking

Interior

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

Basement Information
Basement: Y

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

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

Exterior

Building Information
Building Name: Seal Harbor
Building Area (Total): 1,302
Construction Materials: Brick
StructureType: High-Rise
Stories (Total): 10
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
Common Walls: 2+ Common Walls
Entry Level: 6
Entry Location: Unit Placement(Upper,Front)
Security Features: Intercom, TV Monitor, Doorman, Security Guard, Security Gate, Concierge
Other Structures: Gazebo
Has Waterview
Bay, Harbor, Ocean, Private

Lot Information
WaterfrontYN: Yes

Financial

Tax Information
Tax Annual Amount: $5,888
Tax Year: 2024

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

Location

HOA Information
Association Fee: $796
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 Spitbook, right on Daniel Webster. Or Google maps.
UnparsedAddress: 3 Seal Harbor # 644, 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: 2
Baths: 2.0
Sq. Ft.: 1,302
Stories: 1.0
Lot Size: —
Style: Condo/Co-op
Year Built: 1987
Year Renovated: 1989
County: —
APN: 1425386

Home facts updated by county records on Aug 25, 2023

Other

Miscellaneous Information
Heat Zones: 3

Listing Information
Exclusions: Pets - Absolutely No Dogs Permitted. No Smoking Or Vaping.
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

$637,000 – $771,000

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New listings for sale in 02152

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OPEN TODAY, 11AM TO 12:30PM

$889,000

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115 Read St #2, Winthrop, MA 02152

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Home values near 3 Seal Hbr #644

Data from public records.

Address	Redfin Estimate
3 Seal Harbor Road #132, Winthrop, MA 1 Beds \| 2 Baths \| 1341 Sq. Ft.	$560,362
3 Seal Harbor Road #236, Winthrop, MA 3 Beds \| 2.5 Baths \| 1674 Sq. Ft.	$812,081
3 Seal Harbor Road #341, Winthrop, MA 1 Beds \| 1 Baths \| 871 Sq. Ft.	$455,695
3 Seal Harbor Road #433, Winthrop, MA 2 Beds \| 2 Baths \| 1286 Sq. Ft.	$535,172
3 Seal Harbor Road #537, Winthrop, MA 2 Beds \| 2 Baths \| 1309 Sq. Ft.	$707,914
3 Seal Harbor Road #635, Winthrop, MA 2 Beds \| 2 Baths \| 1306 Sq. Ft.	$595,176
3 Seal Harbor Road #732, Winthrop, MA 1 Beds \| 2 Baths \| 1263 Sq. Ft.	$623,242

Address	Redfin Estimate
3 Seal Harbor Road #232, Winthrop, MA 1 Beds \| 2 Baths \| 1263 Sq. Ft.	$619,687
3 Seal Harbor Road #335, Winthrop, MA 2 Beds \| 2 Baths \| 1306 Sq. Ft.	$754,789
3 Seal Harbor Road #346, Winthrop, MA 2 Beds \| 2 Baths \| 1202 Sq. Ft.	$641,011
3 Seal Harbor Road #437, Winthrop, MA 2 Beds \| 2 Baths \| 1318 Sq. Ft.	$1,015,500
3 Seal Harbor Road #546, Winthrop, MA 2 Beds \| 2 Baths \| 1202 Sq. Ft.	$590,557
3 Seal Harbor Road #643, Winthrop, MA 1 Beds \| 1 Baths \| 838 Sq. Ft.	$488,352
3 Seal Harbor Road #742, Winthrop, MA 2 Beds \| 2 Baths \| 1283 Sq. Ft.	$677,992

Address	Redfin Estimate
3 Seal Harbor Road #233, Winthrop, MA 2 Beds \| 2 Baths \| 1286 Sq. Ft.	$612,832
3 Seal Harbor Road #337, Winthrop, MA 2 Beds \| 2 Baths \| 1318 Sq. Ft.	$648,784
3 Seal Harbor Road #348, Winthrop, MA 2 Beds \| 2 Baths \| 1320 Sq. Ft.	$660,353
3 Seal Harbor Road #441, Winthrop, MA 1 Beds \| 1 Baths \| 871 Sq. Ft.	$471,857
3 Seal Harbor Road #634, Winthrop, MA 1 Beds \| 1 Baths \| 840 Sq. Ft.	$503,747
3 Seal Harbor Road #648, Winthrop, MA 2 Beds \| 2 Baths \| 1302 Sq. Ft.	$705,337
3 Seal Harbor Road #745, Winthrop, MA 2 Beds \| 2 Baths \| 1310 Sq. Ft.	$599,980

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

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