10 Monument Pl, Acton — property record card
Condo NL MDL-0 built in 2011 on 0.13 acres in Acton, assessed at $9,828,700 for fiscal year 2026; last transferred March 31, 2026 for a nominal sum.
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 | 10 Monument Pl, Acton MA 01720 |
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| Map and parcel ID | C5-90-M C5_90_27 |
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| Use | Condo NL MDL-0 (use code 1021) |
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| Zoning | NAV |
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| County | Middlesex |
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Valuation — fiscal year 2026
| Building | $9,794,800 |
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| Land | $0 |
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| Other | $33,900 |
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| Total assessed | $9,828,700 |
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Land
| Lot size | 0.13 acres (5,637 ft²) |
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Building
| Year built | 2011 |
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| Style | Detached Condo |
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| Living area | 2,919 ft² |
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| Rooms | 6 |
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| Units | 12 |
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Last recorded sale
| Price | nominal ($100) |
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| Date | March 31, 2026 |
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| Deed | Registry of Deeds book 85408, page 189 |
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12 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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| 1 Monument Pl | C5_90_5 | Condo NL MDL-0 | $823,900 | $655,000
January 29, 2018 |
| 2 Monument Pl | C5_90_30 | Condo NL MDL-0 | $788,800 | $545,000
September 17, 2013 |
| 3 Monument Pl | C5_90_6 | Condo NL MDL-0 | $824,600 | $1,000,000
October 24, 2025 |
| 5 Monument Pl | C5_90_7 | Condo NL MDL-0 | $929,400 | nominal ($100)
July 30, 2020 |
| 6 Monument Pl | C5_90_29 | Condo NL MDL-0 | $842,700 | $553,900
July 1, 2016 |
| 7 Monument Pl | C5_90_8 | Condo NL MDL-0 | $970,900 | $901,000
August 2, 2021 |
| 8 Monument Pl | C5_90_28 | Condo NL MDL-0 | $897,300 | nominal ($100)
March 31, 2026 |
| 9 Monument Pl | C5_90_9 | Condo NL MDL-0 | $968,300 | $609,800
August 27, 2012 |
| 10 Monument Pl | C5_90_27 | Condo NL MDL-0 | $1,016,000 | $625,000
August 11, 2011 |
| 12 Monument Pl | C5_90_26 | Condo NL MDL-0 | $870,400 | $662,000
September 4, 2015 |
| 16 Monument Pl | C5_90_25 | Condo NL MDL-0 | $896,400 | $601,800
October 27, 2011 |
| Monument Pl B | C5_90_M | Other, Open Space | $0 | nominal ($0)
June 28, 2011 |
What MassDEP has recorded
No tier-classified 21E site and no Activity and Use Limitation is mapped on this parcel.
What this means
- Assessed 745% above the median condo nl mdl-0 in Acton ($1,163,800, 438 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: 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 10 Monument Pl
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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