FeaturesBathroom - Half
LevelThird
3 Seal Harbor # 336, Winthrop MA 02152
Winthrop, MA 02152 • Winthrop Highlands
$859,900
Est. $6,787/month
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About this home
A rare offering at the prestigious Seal Harbor III, this exceptional corner residence captures breathtaking panoramic water views from an expansive, light filled interior and a private balcony - perfect for enjoying morning coffee, evening sunsets, or simply taking in the every changing waterfront scenery. Completely reimagined with a full gut reno in 2010, the home showcases timeless design, an open concept floor plan, and impeccable craftsmanship throughout. Thoughtfully curated with luxurious finishes and custom details, the residence is designed for both elegant entertaining and effortless everyday living. The spa-inspired primary bath features a steam shower, while the versatile second bedroom-equally suited as a den or private office-is enhanced by a striking custom leather accent wall. Seal Harbor III offers an unmatched lifestyle with exceptional amenities, including 24 hour concierge, deeded garage parking 2 spots tandem(D41T), outdoor/guest parking, heated indoor pool/hot tub, outdoor pool, storage closet, clubhouse, tennis courts and so much more.
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Property History
Property Timeline
Listed for Sale
Jul 23, 2026
$859,900
Original listing
Office: Charlesgate Realty Group, llc
| Date | Event | Price | Change | $/sqft | Details |
|---|---|---|---|---|---|
| 07/23/2026 | 🏠 Listed for Sale | $859,900 | - | - | Original listing |
Tax History
| Year | Taxes | Assessment |
|---|---|---|
| 2026 | $10,484 | $941,100 |
Financial Details
Annual Property Tax
$10,484
Tax Year 2026
HOA Fee
$1,365
Per month
Assessed Value
$941,100
Facts & Features
2 Car Garage
Home Facts
Type
Residential
Style
Condominium
Year Built
1987
Living Area
1,674 sq ft
Bedrooms
2
Full Baths
1
Half Baths
1
Total Rooms
5
Interior
Heating
Heat Pump, Electric, Individual, Unit Control
Cooling
Heat Pump, Individual, Unit Control
Flooring
Wood, Tile, Hardwood
Appliances
Range, Dishwasher, Disposal, Microwave, Refrigerator, Washer, Dryer
Fireplace
None
Basement
Y
Laundry
Common Area, In Building, In Unit, Electric Dryer Hookup
Features
None
Exterior
Construction
Brick
Architecture
None
Roof
Rubber
Features
Deck - Roof, Deck - Access Rights, Deck - Roof + Access Rights, Covered Patio/deck, Balcony, Hot Tub/spa, Gazebo, Professional Landscaping, Sprinkler System, Tennis Court(s)
Pool
Association, In Ground, Indoor, Heated
Spa
Hot Tub/spa
Fencing
Security
Patio/Porch
Deck - Roof, Deck - Access Rights, Deck - Roof + Access Rights, Covered
Parking
Garage Spaces
2
Has Garage
Yes
Features
Under, Heated Garage, Deeded, Off Street, Tandem, On Street, Common, Guest, Paved, Exclusive Parking
Total Spaces
3
Utilities
Electric
Circuit Breakers
Water
Public
Sewer
Public Sewer
Gas
None
Other
For Electric Range, For Electric Oven, For Electric Dryer
Financial
Annual Tax
$10,484
Assessed Value
$941,100
HOA & Community
HOA Fee
$1,365
Fee Includes
Water, Sewer, Insurance, Security, Maintenance Structure, Road Maintenance, Maintenance Grounds, Snow Removal, Trash, Reserve Funds
Amenities
Pool, Laundry, Elevator(s), Tennis Court(s), Fitness Center, Sauna/steam, Clubroom, Trail(s), Storage
Optional Fee Includes
None
Down Payment Resource
Eligible
Pets
Yes w/ Restrictions
MA Disclosures
Seller Disclosures
All Information Presented Is As Of Listing Entry Date And Is Subject To Change. Buyer Agents Should Use Due Diligence And Verify All Information. Kitchen Vent Hood Is Not Working At This Time. Towel Warmer In Primary Bath Is Not Working.
Additional Details
Possession
None
Accepted Financing
None
Structure Type
["High-Rise"]
Unit/Building
336
Sq Ft Source
Public Record
Sq Ft Disclosures
Does not include balcony
Documents
Unit Deed, Floor Plans (2)
County
Suffolk
Total market time (incl. prior listings)
15 days
Property Overview
Property Type
Condominium
Listing Type
For Sale
Year Built
1987
Bedrooms
2
Full Bathrooms
1
Half Bathrooms
1
Living Area
1,674 sq ft
Total Rooms
5
Stories
1
Entry Level
3
Floor Layout
Interactive room guide
Floor Layout
Finished Area
1,674 sq ft above grade
LevelThird
FeaturesCountertops - Stone/Granite/Solid, Kitchen Island, Cabinets - Upgraded, Open Floorplan, Recessed Lighting, Remodeled, Stainless Steel Appliances
LevelThird
FeaturesBathroom - Full, Bathroom - With Tub & Shower, Flooring - Marble, Countertops - Stone/Granite/Solid, Jacuzzi / Whirlpool Soaking Tub, Remodeled
LevelThird
LevelThird
LevelThird
FeaturesBathroom - Full, Walk-In Closet(s), Closet/Cabinets - Custom Built, Flooring - Marble, Steam / Sauna
LevelThird
Display Options
Outdoor Areas
PoolAssociation, In Ground, Indoor, Heated
SpaHot Tub/Spa
Patio & porchDeck - Roof, Deck - Access Rights, Deck - Roof + Access Rights, Covered
Room Markers
BABathroom (4)
BRBedroom (5)
DDining (1)
KKitchen (1)
LLiving (2)
OOffice (1)
Conceptual diagram based on MLS room data. It is not to scale and is not a substitute for architectural plans or on-site measurements.
Interior Features
Flooring:
Wood, Tile, Hardwood
Appliances:
Range, Dishwasher, Disposal, Microwave, Refrigerator, Washer, Dryer
Interior Features:
Windows:
Insulated Windows
Basement:
Y
Laundry:
Common Area, In Building, In Unit, Electric Dryer Hookup
Security:
Intercom, TV Monitor, Doorman, Concierge
Construction & Materials
Year Built:
1987
Structure Type:
High-Rise
Exterior Materials:
Brick
Roof:
Rubber
Foundation:
Stories:
1
Heating, Cooling & Utilities
Heating:
Heat Pump, Electric, Individual, Unit Control
Cooling:
Heat Pump, Individual, Unit Control
Hot Water:
Water Source:
Public
Sewer:
Public Sewer
Energy Features:
Thermostat
Exterior & Lot
Exterior Features:
Deck - Roof, Deck - Access Rights, Deck - Roof + Access Rights, Covered Patio/Deck, Balcony, Hot Tub/Spa, Gazebo, Professional Landscaping, Sprinkler System, Tennis Court(s)
Patio & Porch:
Deck - Roof, Deck - Access Rights, Deck - Roof + Access Rights, Covered
Fencing:
Security
Other Structures:
Gazebo
Lot Features:
Road Surface:
Parking & Garage
Garage Spaces:
2
Garage Type:
Attached
Total Parking Spaces:
3
Parking Features:
Under, Heated Garage, Deeded, Off Street, Tandem, On Street, Common, Guest, Paved, Exclusive Parking
Special Features
Spa/Hot Tub:
Yes
Spa Features:
Hot Tub/Spa
Waterfront:
Yes
Waterfront Type:
Waterfront, Ocean, Frontage, Walk to, Public, Ocean, Walk to, 3/10 to 1/2 Mile To Beach, Beach Ownership(Public)
Community Amenities:
Public Transportation, Shopping, Pool, Tennis Court(s), Park, Walk/Jog Trails, Medical Facility, Laundromat, Bike Path, Conservation Area, House of Worship, Public School
Nearby Schools
School District
Winthrop School District local
C
School Safety
2024-25
0.3%
Low
0.3%
Suspensions
5.2% below state avg
Elementary Schools
3 schools
William P. Gorman/Fort Banks Elementary School
0.7 mi
487 students
Less Diverse
Grades PK-02
B-
Arthur T. Cummings Elementary School
1.2 mi
|
#453 of 824
|
Score: 46.0
Improved 101 spots from last year
-12.2 below state avg
467 students
Less Diverse
Rising School
Strong Attendance
Grades 03-05
B
Beachmont Veterans Memorial School
1.3 mi
|
#350 of 824
|
Score: 49.1
Improved 63 spots from last year
-9.1 below state avg
346 students
Diverse
Rising School
Grades PK-05
Middle Schools
3 schools
B+
Winthrop Middle School
0.8 mi
|
#119 of 352
|
Score: 47.4
Dropped 26 spots from last year
-10.8 below state avg
439 students
Less Diverse
Grades 06-08
C
Garfield Middle School
1.6 mi
|
#264 of 352
|
Score: 35.1
Dropped 12 spots from last year
-23.1 below state avg
542 students
Moderate
Grades 06-08
A-
Rumney Marsh Academy
2.6 mi
|
#5 of 16
|
Score: 37.6
Improved 307 spots from last year
-20.6 below state avg
587 students
Moderate
Rising School
Grades 06-08
High Schools
3 schools
C+
Winthrop High School
0.8 mi
|
#241 of 346
|
Score: 47.2
Dropped 112 spots from last year
-11 below state avg
568 students
Less Diverse
18 sports
• 1,118 athletes
College Ready Curriculum
Strong Athletics
Grades 09-12
D
CityLab Innovation High School
1.3 mi
|
#327 of 346
|
Score: 28.4
Improved 14 spots from last year
-29.8 below state avg
117 students
Moderate
College Ready Curriculum
Grades 09-12
C
Revere High School
2.6 mi
|
#249 of 346
|
Score: 46.2
Dropped 17 spots from last year
-12 below state avg
2,115 students
Moderate
18 sports
• 1,334 athletes
Early College Program
College Ready Curriculum
Strong Athletics
Grades 09-12
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95% Interest
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Location
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Neighborhood
Winthrop Highlands
3 Seal Harbor # 336, Winthrop MA 02152
Winthrop, MA 02152
Listing Information
Listing Agent
Cathie Curran
Listing Office
Charlesgate Realty Group, llc
Office Phone
617-587-0100
Agent MLS ID
BB600069
Office MLS ID
NB1520
Listing Data Updated
Aug 7, 2026 10:55 AM EDT
Listing information is deemed reliable but not guaranteed. Data provided by MLS Property Information Network, Inc. All information should be independently verified.
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