Pending

Price cut: $10K (7/29)

$639,000

3 Seal Harbor Rd APT 342, Winthrop, MA 02152

2beds

1,302sqft

$5,225/mo

Get pre-qualified

Condominium

Built in 1987

-- sqft lot

$624,300 Zestimate^®

$491/sqft

$842/mo HOA

What's special

In-unit laundryHardwood floorsMarble en-suite bathsWalk-in closets

Seal Harbor in Winthrop offers an elevated coastal living experience that is unparalleled. Timeless detail inside & out of this building is complemented by white-glove concierge service. Unit 342 is a luxury residence with ocean & pool views from every window. It is conveniently located a few steps from the new elevators & welcomes you into an open floor plan with striking natural sunlight; hardwood floors & a modern kitchen with island dining. Unit offers 2 spacious bedrooms with marble en-suite baths & walk-in closets. A private oversized balcony is the crown jewel with magnificent views. Conveniences include garage parking, extra storage ideal for seasonal items, in-unit laundry & central A/C. Residents enjoy premium amenities such as game room, club room with full kitchen, hobby room & multiple meeting rooms. Building also showcases a fitness center, sauna, hot tub, indoor pool & roof deck with Boston skyline & ocean views. Seal Harbor is a hidden gem on the Boston City line.

157 days
277
12

Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 2
Bathrooms: 2
Full bathrooms: 2

Primary bedroom

Features: Bathroom - Full, Walk-In Closet(s), Flooring - Hardwood

Bedroom 2

Features: Bathroom - Full, Walk-In Closet(s), Flooring - Hardwood

Primary bathroom

Features: Yes

Bathroom 1

Features: Bathroom - Full, Bathroom - Double Vanity/Sink, Bathroom - With Shower Stall, Closet/Cabinets - Custom Built, Flooring - Stone/Ceramic Tile

Bathroom 2

Features: Bathroom - Full, Bathroom - Tiled With Tub & Shower, Closet/Cabinets - Custom Built

Dining room

Features: Flooring - Hardwood, Open Floorplan, Lighting - Overhead

Kitchen

Features: Closet/Cabinets - Custom Built, Flooring - Stone/Ceramic Tile, Countertops - Stone/Granite/Solid, Open Floorplan, Lighting - Overhead

Living room

Features: Flooring - Hardwood, Deck - Exterior, Open Floorplan, Slider

Heating

Forced Air, Heat Pump, Electric

Cooling

Central Air

Appliances

Included: Range, Dishwasher, Disposal, Microwave, Refrigerator, Washer, Dryer
Laundry: In Unit, Electric Dryer Hookup, Washer Hookup

Features

Closet, Lighting - Overhead, Entrance Foyer
Flooring: Tile, Carpet, Hardwood, Flooring - Hardwood
Has basement: No
Has fireplace: No

Interior area

Total structure area: 1,302
Total interior livable area: 1,302 sqft
Finished area above ground: 1,302

Property

Parking

Total spaces: 2
Parking features: Under, Deeded, Off Street
Attached garage spaces: 1
Uncovered spaces: 1

Features

Exterior features: Balcony
Pool features: Association, In Ground, Indoor, Heated
Has view: Yes
View description: Water, Ocean
Has water view: Yes
Water view: Ocean,Water
Waterfront features: Waterfront, Ocean, Ocean

Details

Parcel number: M:074 L:0163342,1425367
Zoning: res

Construction

Type & style

Home type: Condo
Property subtype: Condominium
Attached to another structure: Yes

Materials

Brick
Roof: Rubber

Condition

Year built: 1987

Utilities & green energy

Electric: Circuit Breakers
Sewer: Public Sewer
Water: Public
Utilities for property: for Electric Range, for Electric Dryer, Washer Hookup

Community & HOA

Community

Features: Public Transportation, Shopping, Conservation Area, Highway Access, House of Worship, Public School
Security: Concierge

HOA

Amenities included: Pool, Laundry, Elevator(s), Tennis Court(s), Recreation Facilities, Fitness Center, Sauna/Steam, Clubroom, Trail(s), Storage, Clubhouse
Services included: Water, Sewer, Insurance, Security, Maintenance Structure, Road Maintenance, Maintenance Grounds, Snow Removal, Trash, Air Conditioning, Reserve Funds
HOA fee: $842 monthly

Location

Region: Winthrop

Financial & listing details

Price per square foot: $491/sqft
Tax assessed value: $591,400
Annual tax amount: $6,103
Date on market: 4/29/2026
Listing terms: Contract

Estimated market value

$624,300

$593,000 - $656,000

$3,032/mo

Price history

Date	Event	Price
9/23/2026	Pending sale	$639,000$491/sqft
Source: MLS PIN #73506354 Report a problem
9/14/2026	Contingent	$639,000$491/sqft
Source: MLS PIN #73506354 Report a problem
7/29/2026	Price change	$639,000-1.5%$491/sqft
Source: MLS PIN #73506354 Report a problem
5/13/2026	Price change	$649,000-4.4%$498/sqft
Source: MLS PIN #73506354 Report a problem
4/29/2026	Listed for sale	$679,000$522/sqft
Source: MLS PIN #73506354 Report a problem
4/28/2026	Contingent	$679,000$522/sqft
Source: MLS PIN #73506354 Report a problem
4/23/2026	Listed for sale	$679,000+86.5%$522/sqft
Source: MLS PIN #73506354 Report a problem
8/18/2003	Sold	$364,000+15.2%$280/sqft
Source: Public Record Report a problem
4/2/2001	Sold	$316,000+52.3%$243/sqft
Source: LINK #9716 Report a problem
6/19/1998	Sold	$207,500+12.2%$159/sqft
Source: Public Record Report a problem
7/1/1997	Sold	$185,000$142/sqft
Source: LINK #14882 Report a problem

Public tax history

Year	Property taxes	Tax assessment
2025	$6,103 +9.3%	$591,400 +10.4%
2024	$5,582 +0%	$535,700 +2.7%
2023	$5,581 +1%	$521,600 +11%
2022	$5,528 -2.1%	$470,100 +5.5%
2021	$5,649 +3.6%	$445,500 +3.1%
2020	$5,454 -1.1%	$432,200 +3.2%
2019	$5,517 -1.9%	$418,600 +5.4%
2018	$5,622 +2.9%	$397,000 +4.7%
2017	$5,461 +2.5%	$379,000 +9.3%
2016	$5,329 +10.3%	$346,700 +2.9%
2015	$4,833 +7.1%	$337,000 +11.3%
2013	$4,513 +2.9%	$302,700
2012	$4,386 -3.4%	$302,700 -8%
2011	$4,539 +5.8%	$328,900 -2.6%
2010	$4,290 +21.1%	$337,800 -4.9%
2009	$3,542 +1.8%	$355,300 -5%
2008	$3,478 +5.2%	$374,000 -0.2%
2007	$3,306	$374,800