533 Main St, Acton — property record card
Research and Development facilities built in 1954 on 5.31 acres in Acton, assessed at $3,172,800 for fiscal year 2026; last sold for $525,000 on December 28, 2016.
Rebuilt from the Acton assessor file as published by MassGIS — not the official card. For the official card, with owner, photo and sketch, ask the Acton assessor’s office.
Parcel
| Location | 533 Main St, Acton MA 00000 |
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| Map and parcel ID | E4-59 E4_59 |
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| Use | Research and Development facilities (use code 4040) |
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| Zoning | LI-1 |
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| County | Middlesex |
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Valuation — fiscal year 2026
| Building | $1,749,500 |
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| Land | $917,600 |
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| Other | $505,700 |
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| Total assessed | $3,172,800 |
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Land
| Lot size | 5.31 acres (231,304 ft²) |
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Building
| Year built | 1954 |
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| Style | Warehouse |
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| Living area | 40,811 ft² |
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| Stories | 3 |
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Last recorded sale
| Price | $525,000 |
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| Date | December 28, 2016 |
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| Deed | Registry of Deeds book 68673, page 0454 |
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What MassDEP has recorded
- RTN 2-0021372 — Former Nts Facility, tier classified (active), status TIERI · MassDEP file
Within about 500 m (a third of a mile): 3 active tier-classified 21E sites and 0 sites with an Activity and Use Limitation. All MassDEP sites in Acton.
What this means
- 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: Acton 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 533 Main 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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