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.
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| Year | Land | Building | Total | Change |
|---|---|---|---|---|
| FY2025 | $0 | $373,400 | $378,400 | — |
| Date | Price | Book/Page |
|---|---|---|
| May 2, 2024 | $633,000 | 70133/254 |
| Jan 29, 2024 | $100 | 69843/209 |
| Dec 15, 2023 | $525,000 | 69731/276 |
| Nov 22, 2023 | $1 | 69661/108 |
| Aug 17, 2023 | $1 | 69339/139 |
| Jul 31, 2023 | $516,000 | 69279/169 |
| Jul 5, 2023 | $1 | 69181/305 |
| Jun 30, 2023 | $430,000 | 69166/86 |
| Jun 23, 2023 | $490,000 | 69138/237 |
| May 19, 2023 | $510,000 | 69006/41 |
| Issued | Type / Work | Status | Value |
|---|---|---|---|
| Jul 28, 2023 |
Building Permit - Commercial
[BC-23-29]
Permit #6818
|
— | — |
Discrepancies found between MLS and assessor records.
| Field | Assessor | MLS | Match |
|---|---|---|---|
| Sqft | 991 | 1,302 | ✗ |
| Year built | 1,987 | 1,987 | ✓ |
3 Seal Harbor Road # 342, Winthrop MA 02152
Winthrop, MA 02152
| Date | Event | Price | Change | $/sqft | Details |
|---|---|---|---|---|---|
| 05/13/2026 | ↓ Price Reduced | $649,000 | $30,000 | - | From $679,000 to $649,000 (-4.4%) |
| 04/29/2026 | • Back On Market | - | - | - | Active |
| 04/28/2026 | 📋 Status: Active under contract | - | - | - | Active → Active Under Contract |
| 04/23/2026 | 🏠 Listed for Sale | $679,000 | - | - | Original listing |
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