3 Seal Harbor Rd PH37, Winthrop — property record card
Residential Condominium built in 1987 in Winthrop, assessed at $72,144,900 for fiscal year 2026; last transferred March 13, 2026 for a nominal sum.
Rebuilt from the Winthrop assessor file as published by MassGIS — not the official card. For the official card, with owner, photo and sketch, ask the Winthrop assessor’s office.
Parcel
| Location | 3 Seal Harbor Rd PH37, Winthrop MA 02152 |
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| Map and parcel ID | 74_16 74_16_3P37 |
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| Use | Residential Condominium (use code 1020) |
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| County | Suffolk |
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Valuation — fiscal year 2026
| Building | $71,368,200 |
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| Land | $0 |
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| Other | $776,700 |
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| Total assessed | $72,144,900 |
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Building
| Year built | 1987 |
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| Style | Condominium |
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| Living area | 2,147 ft² |
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| Units | 117 |
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Last recorded sale
| Price | nominal ($10) |
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| Date | March 13, 2026 |
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| Deed | Registry of Deeds book 72515, page 4 |
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117 assessor accounts on this parcel
Condominium units or several buildings share one parcel; each has its own assessment (first 60 shown).
| Address | Account | Use | Assessed | Last sale |
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| 3 Seal Harbor Rd 131 | 74_16_3131 | Residential Condominium | $375,300 | nominal ($1)
December 29, 2021 |
| 3 Seal Harbor Rd 132 | 74_16_3132 | Residential Condominium | $588,500 | nominal ($1)
February 22, 2019 |
| 3 Seal Harbor Rd 133 | 74_16_3133 | Residential Condominium | $508,000 | $525,000
December 15, 2023 |
| 3 Seal Harbor Rd 134 | 74_16_3134 | Residential Condominium | $445,200 | $432,000
September 23, 2022 |
| 3 Seal Harbor Rd 135 | 74_16_3135 | Residential Condominium | $595,400 | $540,000
September 2, 2022 |
| 3 Seal Harbor Rd 136 | 74_16_3136 | Residential Condominium | $809,600 | nominal ($10)
November 8, 2024 |
| 3 Seal Harbor Rd 137 | 74_16_3137 | Residential Condominium | $726,100 | $559,000
August 30, 2019 |
| 3 Seal Harbor Rd 231 | 74_16_3231 | Residential Condominium | $487,300 | $490,000
June 23, 2023 |
| 3 Seal Harbor Rd 232 | 74_16_3232 | Residential Condominium | $571,300 | $650,000
December 24, 2024 |
| 3 Seal Harbor Rd 233 | 74_16_3233 | Residential Condominium | $581,600 | $430,000
December 8, 2005 |
| 3 Seal Harbor Rd 234 | 74_16_3234 | Residential Condominium | $440,900 | $522,500
April 18, 2025 |
| 3 Seal Harbor Rd 235 | 74_16_3235 | Residential Condominium | $589,000 | $590,000
January 28, 2022 |
| 3 Seal Harbor Rd 236 | 74_16_3236 | Residential Condominium | $844,200 | $640,000
January 15, 2021 |
| 3 Seal Harbor Rd 237 | 74_16_3237 | Residential Condominium | $722,600 | $785,000
September 8, 2025 |
| 3 Seal Harbor Rd 241 | 74_16_3241 | Residential Condominium | $415,200 | $310,000
July 31, 2017 |
| 3 Seal Harbor Rd 242 | 74_16_3242 | Residential Condominium | $615,600 | $660,000
May 30, 2025 |
| 3 Seal Harbor Rd 243 | 74_16_3243 | Residential Condominium | $407,900 | $430,000
June 30, 2023 |
| 3 Seal Harbor Rd 244 | 74_16_3244 | Residential Condominium | $604,800 | nominal ($1)
August 12, 2025 |
| 3 Seal Harbor Rd 245 | 74_16_3245 | Residential Condominium | $572,200 | $500,000
November 4, 2022 |
| 3 Seal Harbor Rd 246 | 74_16_3246 | Residential Condominium | $538,900 | $250,000
February 4, 2010 |
| 3 Seal Harbor Rd 248 | 74_16_3248 | Residential Condominium | $653,000 | $575,000
September 1, 2020 |
| 3 Seal Harbor Rd 331 | 74_16_3331 | Residential Condominium | $485,800 | $435,000
August 22, 2022 |
| 3 Seal Harbor Rd 332 | 74_16_3332 | Residential Condominium | $592,400 | $500,000
January 17, 2023 |
| 3 Seal Harbor Rd 333 | 74_16_3333 | Residential Condominium | $655,200 | $524,900
November 22, 2019 |
| 3 Seal Harbor Rd 334 | 74_16_3334 | Residential Condominium | $439,800 | nominal ($100)
December 18, 2025 |
| 3 Seal Harbor Rd 335 | 74_16_3335 | Residential Condominium | $603,200 | nominal ($10)
May 12, 2023 |
| 3 Seal Harbor Rd 336 | 74_16_3336 | Residential Condominium | $941,100 | $630,000
December 21, 2017 |
| 3 Seal Harbor Rd 337 | 74_16_3337 | Residential Condominium | $700,200 | nominal ($1)
June 4, 1997 |
| 3 Seal Harbor Rd 341 | 74_16_3341 | Residential Condominium | $413,200 | $195,000
November 30, 2000 |
| 3 Seal Harbor Rd 342 | 74_16_3342 | Residential Condominium | $610,600 | $364,000
August 18, 2003 |
| 3 Seal Harbor Rd 343 | 74_16_3343 | Residential Condominium | $424,800 | $225,000
April 26, 2002 |
| 3 Seal Harbor Rd 344 | 74_16_3344 | Residential Condominium | $610,600 | $392,500
December 30, 2015 |
| 3 Seal Harbor Rd 345 | 74_16_3345 | Residential Condominium | $578,100 | nominal ($1)
April 5, 1995 |
| 3 Seal Harbor Rd 346 | 74_16_3346 | Residential Condominium | $613,400 | $389,100
October 10, 2013 |
| 3 Seal Harbor Rd 347 | 74_16_3347 | Residential Condominium | $620,600 | $415,000
June 30, 2017 |
| 3 Seal Harbor Rd 348 | 74_16_3348 | Residential Condominium | $616,600 | $438,000
September 30, 2015 |
| 3 Seal Harbor Rd 431 | 74_16_3431 | Residential Condominium | $494,600 | $188,000
November 12, 1998 |
| 3 Seal Harbor Rd 432 | 74_16_3432 | Residential Condominium | $592,400 | $405,000
November 1, 2019 |
| 3 Seal Harbor Rd 433 | 74_16_3433 | Residential Condominium | $568,400 | $203,000
May 13, 1988 |
| 3 Seal Harbor Rd 434 | 74_16_3434 | Residential Condominium | $447,200 | $510,000
May 19, 2023 |
| 3 Seal Harbor Rd 435 | 74_16_3435 | Residential Condominium | $582,500 | nominal ($10)
November 27, 2024 |
| 3 Seal Harbor Rd 436 | 74_16_3436 | Residential Condominium | $938,100 | $591,750
June 3, 2013 |
| 3 Seal Harbor Rd 437 | 74_16_3437 | Residential Condominium | $776,000 | nominal ($1)
May 2, 2013 |
| 3 Seal Harbor Rd 441 | 74_16_3441 | Residential Condominium | $429,600 | $294,000
October 14, 2016 |
| 3 Seal Harbor Rd 442 | 74_16_3442 | Residential Condominium | $576,200 | nominal ($1)
July 1, 2011 |
| 3 Seal Harbor Rd 443 | 74_16_3443 | Residential Condominium | $404,800 | $315,000
October 29, 2004 |
| 3 Seal Harbor Rd 444 | 74_16_3444 | Residential Condominium | $610,600 | $410,000
August 24, 2007 |
| 3 Seal Harbor Rd 445 | 74_16_3445 | Residential Condominium | $578,100 | nominal ($10)
February 4, 2022 |
| 3 Seal Harbor Rd 446 | 74_16_3446 | Residential Condominium | $551,700 | nominal ($1)
December 16, 2022 |
| 3 Seal Harbor Rd 447 | 74_16_3447 | Residential Condominium | $609,700 | $555,000
July 15, 2021 |
| 3 Seal Harbor Rd 448 | 74_16_3448 | Residential Condominium | $586,900 | $230,000
October 8, 1999 |
| 3 Seal Harbor Rd 531 | 74_16_3531 | Residential Condominium | $518,800 | $527,000
October 30, 2024 |
| 3 Seal Harbor Rd 532 | 74_16_3532 | Residential Condominium | $597,400 | $163,000
November 21, 1996 |
| 3 Seal Harbor Rd 533 | 74_16_3533 | Residential Condominium | $599,500 | $450,000
September 17, 2018 |
| 3 Seal Harbor Rd 534 | 74_16_3534 | Residential Condominium | $428,200 | nominal ($1)
April 30, 2012 |
| 3 Seal Harbor Rd 535 | 74_16_3535 | Residential Condominium | $641,900 | nominal ($1)
November 22, 2023 |
| 3 Seal Harbor Rd 536 | 74_16_3536 | Residential Condominium | $877,500 | $525,000
August 4, 2008 |
| 3 Seal Harbor Rd 537 | 74_16_3537 | Residential Condominium | $693,500 | nominal ($1)
February 26, 2025 |
| 3 Seal Harbor Rd 541 | 74_16_3541 | Residential Condominium | $463,600 | nominal ($100)
October 30, 2025 |
| 3 Seal Harbor Rd 542 | 74_16_3542 | Residential Condominium | $610,600 | $380,000
August 15, 2003 |
What MassDEP has recorded
No tier-classified 21E site and no Activity and Use Limitation is mapped on this parcel.
What this means
- Assessed 5970% above the median residential condominium in Winthrop ($1,188,600, 251 parcels).
- The last deed was recorded for a nominal sum: a transfer between family members, into a trust or a similar non-market sale. It says nothing about the market value.
Point at the centre of the assessor parcel — not a survey.
Data: Winthrop assessor file for fiscal year 2026, via MassGIS, retrieved October 30, 2026; MassDEP sites retrieved the same day. Sources and freshness. No owner names are published.
The report for 3 Seal Harbor Rd PH37
This page shows the assessor record and the MassDEP sites on the parcel. The report adds what lies around it: FEMA flood zone, wetlands, Zone II and other water supply protection areas, priority habitat, sewer or septic service, protected open space, and every 21E site within half a mile.
$19card · PDF within 24 h · you pay after receiving itSee the sample (PDF)
Order the report