20-50 Prospect St, Somerville — property record card
APT OVER 8 MDL-94 built in 2021 on 1.57 acres in Somerville, assessed at $194,427,300 for fiscal year 2025; last sold for $7,989,647 on January 7, 2021.
Rebuilt from the Somerville assessor file as published by MassGIS — not the official card. For the official card, with owner, photo and sketch, ask the Somerville assessor’s office.
Parcel
| Location | 20-50 Prospect St, Somerville MA 02143 |
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| Map and parcel ID | 82-D-L3 82_D_L3 |
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| Use | APT OVER 8 MDL-94 (use code 112C) |
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| Zoning | TOD100 |
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| County | Middlesex |
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Valuation — fiscal year 2025
| Building | $160,827,000 |
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| Land | $33,600,300 |
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| Total assessed | $194,427,300 |
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Land
| Lot size | 1.57 acres (68,520 ft²) |
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Building
| Year built | 2021 |
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| Style | High Rise Apt |
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| Living area | 418,697 ft² |
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| Stories | 25 |
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Last recorded sale
| Price | $7,989,647 |
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| Date | January 7, 2021 |
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| Deed | Registry of Deeds book 76638, page 0068 |
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What MassDEP has recorded
- RTN 3-0028512 — Properties Abutting Kiley Barrel Site, tier classified (active), status TIERII · MassDEP file
- RTN 3-0002849 — Kiley Barrel Fmr, activity and use limitation, status PSC, class PA, AUL recorded June 20, 2025 · MassDEP file
Within about 500 m (a third of a mile): 7 active tier-classified 21E sites and 19 sites with an Activity and Use Limitation. All MassDEP sites in Somerville.
What this means
- Assessed 2957% above the median apt over 8 mdl-94 in Somerville ($6,360,500, 36 parcels).
- An Activity and Use Limitation is a deed restriction: it limits how the land may be used (often no residential use or no digging) and passes to every buyer.
- A tier-classified site is a release still being cleaned up under the Massachusetts Contingency Plan; the MassDEP file shows the stage reached.
Point at the centre of the assessor parcel — not a survey.
Data: Somerville assessor file for fiscal year 2025, via MassGIS, retrieved October 30, 2026; MassDEP sites retrieved the same day. Sources and freshness. No owner names are published.
The report for 20-50 Prospect St
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)
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