300 Third St, Cambridge — property record card
HIGH-TECH built in 2000 on 0.98 acres in Cambridge, assessed at $147,001,300 for fiscal year 2026; last sold for $16,611,740 on September 28, 2007.
Rebuilt from the Cambridge assessor file as published by MassGIS — not the official card. For the official card, with owner, photo and sketch, ask the Cambridge assessor’s office.
Parcel
| Location | 300 Third St |
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| Map and parcel ID | 15-29 |
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| Use | HIGH-TECH (use code 406) |
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| Zoning | IB-1 |
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| County | Middlesex |
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Valuation — fiscal year 2026
| Building | $118,470,400 |
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| Land | $28,530,900 |
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| Total assessed | $147,001,300 |
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Land
| Lot size | 0.98 acres (42,689 ft²) |
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Building
| Year built | 2000 |
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| Style | LIFE SCI HI TECH |
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| Living area | 144,168 ft² |
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| Stories | 4 |
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| Units | 2 |
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Last recorded sale
| Price | $16,611,740 |
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| Date | September 28, 2007 |
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| Deed | Registry of Deeds book 50161, page 0456 |
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What MassDEP has recorded
- RTN 3-0002075 — Former Peter Gray Corp, activity and use limitation, status PSC, class PA, AUL recorded December 23, 2022 · MassDEP file
Within about 500 m (a third of a mile): 7 active tier-classified 21E sites and 32 sites with an Activity and Use Limitation. All MassDEP sites in Cambridge.
What this means
- 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.
Point at the centre of the assessor parcel — not a survey.
Data: Cambridge 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 300 Third 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)
Order the report