OFF MARKET

Off market mar 2025 for $550K

$557,911

Est. refi paymentEst. refi $2,354/mo

•

1,106

sq ft

3 Seal Hbr #846, Winthrop, MA 02152

About this home

Just Listed! Top-floor, private corner unit at the highly sought-after Seal Harbor 3. Enjoy stunning waterfront views from your spacious balcony, complemented by a rare adjacent deck—perfect for outdoor relaxation or entertaining. This 1+ bedroom unit features a versatile den or office, offering flexible living space. Don't miss out on this exceptional opportunity! Seal Harbor is a lifestyle which offers 24/7 concierge, outdoor heated pool, indoor rooftop lap pool, sundeck with Boston skyline views, fitness facility, sauna, tennis courts, billiard room, function rooms, additional storage and so much more. Winthrop By the Sea offers a wonderful sense of community, boating, swimming, fishing, nice local restaurants, golf course, seasonal ferry... Come SEA for yourself, you will not be disappointed. Seller welcomes offers with requests for buyer concessions.

CondoProperty Type

1987Year Built

$504Est. Price/Sq.Ft.

1 car garageParking

Listed by Cathie Curran • Charlesgate Realty Group, llc

Bought with The Reference Group • Reference Real Estate

Redfin checked: a minute ago

•Source:MLS PIN #73321924

Redfin Estimate

$557,911

$7,911 since sold in March 2025$8,000 since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 4.8% lower than the average sale price ($586K) 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 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 MAY 19, 2026
$630,000
D
1 bed1 bath910 sq ft
3 Seal Harbor Rd #133, Winthrop, MA 02152
SOLD AUG 26, 2026
$589,000
E
2 beds2 baths1,241 sq ft
1 Seal Harbor Rd #116, Winthrop, MA 02152
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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$102,261

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

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See all

Provided by Redfin

Sale history for 3 Seal Hbr #846

Date

Event

Price

MLS PIN #73321924

Mar 10, 2025

Sold

$550,000

$497/sq ft

Jan 21, 2025

Contingent

—

Dec 30, 2024

Listed

$575,000

$520/sq ft

MLS PIN #71516975

Jun 26, 2013

Sold

$355,000

$321/sq ft

May 25, 2013

Contingent

—

May 15, 2013

Price Changed

$369,900

$334/sq ft

Apr 30, 2013

Listed

$389,900

$353/sq ft

+21

LUXURY LIVING IN THIS EXCEPTIONAL 1 BEDRM PLUS DEN OR 2 BEDRM PENTHOUSE OVERLOOKING THE ATLANTIC OCEAN-JUST MINUTES TO BOSTON AND LOGAN AIRPORT. Exceptional layout, brand new kitchen and baths, pro series stainless steel appliances, recessed lighting, gorgeous oak floors, and surround sound add the finishing touches.. Underground parking, full service concierge building, and first class management company make this an oceanfront dream home in every way. 2ND BR HAS BEEN CONVERTED TO A DEN.

MLS PIN #70444780

Jan 30, 2007

Sold

$359,000

$325/sq ft

Jan 26, 2007

Listing Removed

—

Aug 22, 2006

Listed

$379,000

$343/sq ft

Brand New Price!! Spectacular panoramic views of the Atlantic from this top floor private corner unit with balcony and adjacent deck for outdoor entertainment.Get Sun in morning and afternoon. Large master bedroom suite. Laundry in separate room off kitchen, Second room ideal for home office with window overlooking rear deck and ocean New heating system 2001,new hot water 2006.. New appliances. Best buy for four rooms unit on top floor.

Public Records

May 1, 1997

Sold

$167,000

$151/sq ft

Public Records

Oct 23, 1987

Sold

$206,000

$186/sq ft

Year

Property tax

Land + Additions

Assessment*

2023

$5,374 (+1.0%)

$502,200

2022

$5,323 (−2.1%)

$452,600

2021

$5,436 (+3.6%)

$428,700

2020

$5,249 (−1.1%)

$415,900

2019

$5,306 (−0.7%)

$402,600

2018

$5,343 (+3.0%)

$377,300

2017

$5,189 (−1.9%)

$360,100

2016

$5,289 (+18.7%)

$344,100

2014

$4,456 (+0.7%)

$286,000

2013

$4,425 (+2.9%)

$296,800

2012

$4,301 (+0.7%)

$296,800

2011

$4,271 (−6.3%)

$309,500

2010

$4,559 (+23.7%)

$359,000

2009

$3,685

$369,600

Tax history for 3 Seal Hbr #846

Year

Property tax

Land + Additions

Assessment*

2023

$5,374 (+1.0%)

$502,200

2022

$5,323 (−2.1%)

$452,600

2021

$5,436 (+3.6%)

$428,700

2020

$5,249 (−1.1%)

$415,900

2019

$5,306 (−0.7%)

$402,600

2018

$5,343 (+3.0%)

$377,300

2017

$5,189 (−1.9%)

$360,100

2016

$5,289 (+18.7%)

$344,100

2014

$4,456 (+0.7%)

$286,000

2013

$4,425 (+2.9%)

$296,800

2012

$4,301 (+0.7%)

$296,800

2011

$4,271 (−6.3%)

$309,500

2010

$4,559 (+23.7%)

$359,000

2009

$3,685

$369,600

*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.

1,106

Year built

1987

Style

Condo/Co-op

County

APN

1425418

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: Walk-In Closet(s),Flooring - Wall to Wall Carpet

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

Bathroom #1 Information
Features: Bathroom - Tiled With Shower Stall

Bathroom #2 Information
Features: Bathroom - Half

Living Room Information
Features: Balcony / Deck,Open Floorplan,Flooring - Engineered Hardwood

Dining Room Information
Features: Recessed Lighting,Flooring - Engineered Hardwood

Kitchen Information
Features: Countertops - Stone/Granite/Solid,Kitchen Island,Cabinets - Upgraded,Open Floorplan,Remodeled,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): 4
Window Features: Window(s) - Picture
Flooring: Tile, Carpet, Engineered Hardwood
Interior Features: Recessed Lighting, Den, Elevator

Exterior

Building Information
Building Name: Seal Harbor
Building Area (Total): 1,106
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
Common Walls: No One Above
Entry Level: 8
Entry Location: Unit Placement(Back)
Security Features: Concierge
Other Structures: Gazebo
Has Waterview
Ocean, Public, Sound, Walk to

Lot Information
WaterfrontYN: Yes

Financial

Tax Information
Tax Annual Amount: $5,442
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: $802
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 # 846, 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: 1
Baths: 1.5
Sq. Ft.: 1,106
Stories: 1.0
Lot Size: —
Style: Condo/Co-op
Year Built: 1987
Year Renovated: 1989
County: —
APN: 1425418

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

$531,000 – $642,000

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Home values near 3 Seal Hbr #846

Data from public records.

Address	Redfin Estimate
3 Seal Harbor Road #135, Winthrop, MA 2 Beds \| 2 Baths \| 1370 Sq. Ft.	$588,593
3 Seal Harbor Road #332, Winthrop, MA 1 Beds \| 2 Baths \| 1263 Sq. Ft.	$542,991
3 Seal Harbor Road #431, Winthrop, MA 1 Beds \| 1.5 Baths \| 1010 Sq. Ft.	$520,105
3 Seal Harbor Road #448, Winthrop, MA 2 Beds \| 2 Baths \| 1320 Sq. Ft.	$577,401
3 Seal Harbor Road #545, Winthrop, MA 2 Beds \| 2 Baths \| 1310 Sq. Ft.	$554,422
3 Seal Harbor Road #632, Winthrop, MA 1 Beds \| 2 Baths \| 1263 Sq. Ft.	$635,576
3 Seal Harbor Road #644, Winthrop, MA 2 Beds \| 2 Baths \| 1302 Sq. Ft.	$669,720

Address	Redfin Estimate
3 Seal Harbor Road #241, Winthrop, MA 1 Beds \| 1 Baths \| 871 Sq. Ft.	$455,236
3 Seal Harbor Road #335, Winthrop, MA 2 Beds \| 2 Baths \| 1306 Sq. Ft.	$754,789
3 Seal Harbor Road #442, Winthrop, MA 2 Beds \| 2 Baths \| 1332 Sq. Ft.	$603,228
3 Seal Harbor Road #534, Winthrop, MA 1 Beds \| 1 Baths \| 840 Sq. Ft.	$504,228
3 Seal Harbor Road #546, Winthrop, MA 2 Beds \| 2 Baths \| 1202 Sq. Ft.	$590,557
3 Seal Harbor Road #641, Winthrop, MA 1 Beds \| 1 Baths \| 871 Sq. Ft.	$464,681
3 Seal Harbor Road #731, Winthrop, MA 1 Beds \| 1.5 Baths \| 1033 Sq. Ft.	$570,202

Address	Redfin Estimate
3 Seal Harbor Road #248, Winthrop, MA 2 Beds \| 2 Baths \| 1320 Sq. Ft.	$660,607
3 Seal Harbor Road #343, Winthrop, MA 1 Beds \| 1 Baths \| 823 Sq. Ft.	$474,203
3 Seal Harbor Road #447, Winthrop, MA 2 Beds \| 2 Baths \| 1320 Sq. Ft.	$602,062
3 Seal Harbor Road #544, Winthrop, MA 2 Beds \| 2 Baths \| 1302 Sq. Ft.	$625,086
3 Seal Harbor Road #548, Winthrop, MA 2 Beds \| 2 Baths \| 1320 Sq. Ft.	$648,923
3 Seal Harbor Road #642, Winthrop, MA 2 Beds \| 2 Baths \| 1315 Sq. Ft.	$699,837
3 Seal Harbor Road #735, Winthrop, MA 2 Beds \| 2 Baths \| 1306 Sq. Ft.	$618,151

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

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