55 Knox Trl #502, Acton — property record card
IND CONDO MDL built in 2004 in Acton, assessed at $6,131,400 for fiscal year 2026; last sold for $450,000 on February 28, 2024.
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 | 55 Knox Trl #502, Acton MA 00000 |
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| Map and parcel ID | I4-9-3 I4_9_3502 |
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| Use | IND CONDO MDL (use code 4021) |
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| Zoning | TD |
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| County | Middlesex |
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Valuation — fiscal year 2026
| Building | $6,021,900 |
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| Land | $0 |
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| Other | $109,500 |
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| Total assessed | $6,131,400 |
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Building
| Year built | 2004 |
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| Style | Indust Condo |
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| Living area | 3,842 ft² |
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| Units | 14 |
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Last recorded sale
| Price | $450,000 |
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| Date | February 28, 2024 |
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| Deed | Registry of Deeds book 82522, page 91 |
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14 assessor accounts on this parcel
Condominium units or several buildings share one parcel; each has its own assessment.
| Address | Account | Use | Assessed | Last sale |
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| 55 Knox Trl | I4_9_3 | IND Condo MDL | $50,000 | $495,000
June 27, 2023 |
| 55 Knox Trl #401 | I4_9_3401 | IND CONDO MDL | $397,700 | $450,000
February 28, 2024 |
| 55 Knox Trl #402 | I4_9_3402 | IND CONDO MDL | $619,800 | nominal ($100)
November 5, 2018 |
| 55 Knox Trl #404 | I4_9_3404 | IND CONDO MDL | $622,300 | $271,425
February 18, 2005 |
| 55 Knox Trl #406 | I4_9_3406 | IND CONDO MDL | $386,000 | $130,000
July 10, 2013 |
| 55 Knox Trl #407 | I4_9_3407 | IND CONDO MDL | $386,600 | $400,000
May 26, 2023 |
| 55 Knox Trl #408 | I4_9_3408 | CHARIT MDL-06 | $384,300 | $175,000
March 15, 2005 |
| 55 Knox Trl #409 | I4_9_3409 | IND CONDO MDL | $388,600 | $113,000
March 9, 2005 |
| 55 Knox Trl #410 | I4_9_3410 | IND CONDO MDL | $625,600 | $880,000
February 16, 2022 |
| 55 Knox Trl #412 | I4_9_3412 | IND CONDO MDL | $528,300 | $177,640
February 7, 2005 |
| 55 Knox Trl #413 | I4_9_3413 | IND CONDO MDL | $514,900 | $186,200
February 4, 2005 |
| 55 Knox Trl #501 | I4_9_3501 | IND CONDO MDL | $435,900 | $152,855
August 3, 2005 |
| 55 Knox Trl #502 | I4_9_3502 | IND CONDO MDL | $791,400 | $383,295
August 3, 2005 |
| 55-55 Knox Trl | I4_9_3_M | Other, Open Space | $0 | nominal ($0)
December 17, 2003 |
What MassDEP has recorded
- RTN 2-0000003 — Agway Kress Property, activity and use limitation, status RAO, class A4, AUL recorded January 19, 2001 · MassDEP file
Within about 500 m (a third of a mile): 0 active tier-classified 21E sites and 1 site with an Activity and Use Limitation. All MassDEP sites in Acton.
What this means
- The last sale price is 93% below the current assessment. Massachusetts assessments aim at full market value as of January 1 of the year before the fiscal year.
- 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: 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 55 Knox Trl #502
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.
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