
3 Seal Harbor #336 Winthrop — Photo 1 of 42
$859,900
Investment Analysis — 3 Seal Harbor #336
Winthrop, MA 02152 — Winthrop Highlands
Based on HUD Small Area Fair Market Rent for Boston-Cambridge-Quincy, MA-NH HUD Metro FMR Area, a 2-bedroom in 02152 carries an estimated $2,620/mo in gross rent — about a -0.35% cap rate and $-2,970/yr in estimated NOI at the $859,900 list price. Adjust every assumption in the calculator below.
Beds
2
Baths
1.5
SqFt
1,674
Style
Condominium
Built
1987
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.
Estimates — not financial advice
These figures are illustrative estimates for informational purposes only — not an appraisal, valuation, or guarantee of rent, income, or returns, and not financial, tax, or investment advice. Rent is either the figure reported on the MLS listing — in-place rent that may differ from market and is not verified against the actual leases — or, where the listing reports none, an estimate from HUD Small Area Fair Market Rents, a government benchmark that may differ from actual market rent. Each figure is labelled with its source. Cap rate, NOI, and returns depend on the assumptions shown, which you can change. MLS and other third-party data may be inaccurate or out of date. Verify all figures independently and consult your own financial, tax, and legal advisors before making any investment decision.
Property Details
Financials
Parking
Interior Specifications
Climate & Utilities
Building & Exterior
Property & Lot
Amenities & Appliances
Range • Dishwasher • Disposal • Microwave • Refrigerator • Washer • Dryer
Neighborhood
Public Transportation • Shopping • Pool • Tennis Court(s) • Park • Walk/Jog Trails
Geography
Floorplan Breakdown
Structural Layout
Living Room
Lvl ThirdDining Room
Lvl ThirdKitchen
Lvl ThirdCountertops - Stone/Granite/Solid, Kitchen Island, Cabinets - Upgraded, Open Floorplan, Recessed Lighting, Remodeled, Stainless Steel Appliances
Primary Bedroom
Lvl ThirdBathroom - Full, Walk-In Closet(s), Closet/Cabinets - Custom Built, Flooring - Marble, Steam / Sauna
Bedroom 2
Lvl ThirdBathroom 1
Lvl ThirdBathroom - Half
Bathroom 2
Lvl ThirdBathroom - Full, Bathroom - With Tub & Shower, Flooring - Marble, Countertops - Stone/Granite/Solid, Jacuzzi / Whirlpool Soaking Tub, Remodeled
Property History
$859,900
Jul 23, 2026
MLS® 73554136
$859,000
Jul 1, 2025
MLS® 73329908
$859,000
Jan 28, 2025
MLS® 73329908
$889,000
Oct 15, 2023
MLS® 73139614
$889,000
Jul 23, 2023
MLS® 73139614
Listing Agent: Cathie Curran
Listing Office: Charlesgate Realty Group, llc
MLS® Number: 73554136








