3 Half Moon Hill, Acton — property record card
Condo NL MDL-0 built in 1996 on 0.15 acres in Acton, assessed at $17,628,400 for fiscal year 2026; last sold for $912,000 on October 20, 2025.
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 | 3 Half Moon Hill, Acton MA 00000 |
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| Map and parcel ID | E2-239-7 E2_239_11 |
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| Use | Condo NL MDL-0 (use code 1021) |
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| Zoning | R8/4 |
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| County | Middlesex |
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Valuation — fiscal year 2026
| Building | $17,592,600 |
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| Land | $0 |
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| Other | $35,800 |
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| Total assessed | $17,628,400 |
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Land
| Lot size | 0.15 acres (6,390 ft²) |
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Building
| Year built | 1996 |
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| Style | Town House |
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| Living area | 3,118 ft² |
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| Units | 26 |
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Last recorded sale
| Price | $912,000 |
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| Date | October 20, 2025 |
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| Deed | Registry of Deeds book 84758, page 370 |
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26 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 Half Moon Hill | E2_239_9 | Condo NL MDL-0 | $644,300 | $251,541
October 1, 1996 |
| 1-18 Half Moon Hill | E2_239_M | Other, Open Space | $0 | nominal ($0)
August 22, 1995 |
| 2 Half Moon Hill | E2_239_10 | Condo NL MDL-0 | $864,300 | $233,674
September 19, 1995 |
| 3 Half Moon Hill | E2_239_11 | Condo NL MDL-0 | $1,098,800 | nominal ($100)
December 19, 2022 |
| 4 Half Moon Hill | E2_239_12 | Condo NL MDL-0 | $765,700 | $912,000
October 20, 2025 |
| 4-24 Half Moon Hill | E2_239_M2 | Other, Open Space | $0 | nominal ($0)
August 22, 1995 |
| 5 Half Moon Hill | E2_239_13 | Condo NL MDL-0 | $571,200 | $201,226
June 17, 1996 |
| 6 Half Moon Hill | E2_239_14 | Condo NL MDL-0 | $768,400 | nominal ($100)
June 26, 2024 |
| 7 Half Moon Hill | E2_239_15 | Condo NL MDL-0 | $329,100 | $142,306
June 27, 1996 |
| 8 Half Moon Hill | E2_239_16 | Condo NL MDL-0 | $745,400 | $343,000
June 25, 2009 |
| 9 Half Moon Hill | E2_239_17 | Condo NL MDL-0 | $746,300 | nominal ($100)
November 2, 2023 |
| 10 Half Moon Hill | E2_239_18 | Condo NL MDL-0 | $815,600 | nominal ($100)
October 27, 2021 |
| 11 Half Moon Hill | E2_239_19 | Condo NL MDL-0 | $641,700 | $1,005,000
June 20, 2024 |
| 12 Half Moon Hill | E2_239_20 | Condo NL MDL-0 | $742,600 | $217,823
December 11, 1995 |
| 13 Half Moon Hill | E2_239_21 | Condo NL MDL-0 | $759,700 | $233,161
December 18, 1995 |
| 14 Half Moon Hill | E2_239_22 | Condo NL MDL-0 | $623,800 | $290,306
September 25, 1996 |
| 15 Half Moon Hill | E2_239_23 | Condo NL MDL-0 | $766,800 | $385,000
June 24, 1998 |
| 16 Half Moon Hill | E2_239_24 | Condo NL MDL-0 | $745,300 | $374,608
October 1, 1996 |
| 17 Half Moon Hill | E2_239_25 | Condo NL MDL-0 | $706,000 | $400,000
August 2, 2011 |
| 18 Half Moon Hill | E2_239_26 | Condo NL MDL-0 | $638,800 | $227,523
June 21, 1996 |
| 19 Half Moon Hill | E2_239_27 | Condo NL MDL-0 | $814,300 | nominal ($1)
April 23, 2013 |
| 20 Half Moon Hill | E2_239_28 | Condo NL MDL-0 | $692,100 | $1,150,000
July 1, 2024 |
| 21 Half Moon Hill | E2_239_29 | Condo NL MDL-0 | $776,700 | nominal ($100)
December 13, 2019 |
| 22 Half Moon Hill | E2_239_30 | Condo NL MDL-0 | $762,300 | $515,000
August 15, 2002 |
| 23 Half Moon Hill | E2_239_31 | Condo NL MDL-0 | $682,700 | $321,325
December 4, 1995 |
| 24 Half Moon Hill | E2_239_32 | Condo NL MDL-0 | $926,500 | $800,000
December 23, 2015 |
What MassDEP has recorded
No tier-classified 21E site and no Activity and Use Limitation is mapped on this parcel.
What this means
- Assessed 1415% above the median condo nl mdl-0 in Acton ($1,163,800, 438 parcels).
- The last sale price is 95% below the current assessment. Massachusetts assessments aim at full market value as of January 1 of the year before the fiscal year.
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 3 Half Moon Hill
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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