420 Great Rd #C10, Acton — property record card
Condo NL MDL-0 built in 1976 in Acton, assessed at $7,385,700 for fiscal year 2026; last sold for $285,000 on August 22, 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 | 420 Great Rd #C10, Acton MA 00000 |
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| Map and parcel ID | C4-28-1 C4_28_C10 |
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| Use | Condo NL MDL-0 (use code 1021) |
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| Zoning | R-A |
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| County | Middlesex |
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Valuation — fiscal year 2026
| Building | $7,385,700 |
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| Land | $0 |
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| Total assessed | $7,385,700 |
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Building
| Year built | 1976 |
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| Style | Condominium |
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| Living area | 783 ft² |
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| Rooms | 4 |
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| Units | 31 |
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Last recorded sale
| Price | $285,000 |
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| Date | August 22, 2025 |
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| Deed | Registry of Deeds book 84528, page 355 |
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31 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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| 420 Great Rd #A1 | C4_28_A01 | Condo NL MDL-0 | $270,000 | $215,000
December 17, 2020 |
| 420 Great Rd #A2 | C4_28_A02 | Condo NL MDL-0 | $251,400 | $248,000
May 3, 2023 |
| 420 Great Rd #A3 | C4_28_A03 | Condo NL MDL-0 | $153,700 | nominal ($100)
April 26, 2021 |
| 420 Great Rd #A4 | C4_28_A04 | Condo NL MDL-0 | $229,200 | $155,000
January 27, 2020 |
| 420 Great Rd #A5 | C4_28_A05 | Condo NL MDL-0 | $129,900 | nominal ($0)
November 20, 1991 |
| 420 Great Rd #A6 | C4_28_A06 | Condo NL MDL-0 | $137,100 | nominal ($100)
July 1, 2024 |
| 420 Great Rd #A7 | C4_28_A07 | Condo NL MDL-0 | $229,200 | $48,000
May 28, 1991 |
| 420 Great Rd #A8 | C4_28_A08 | Condo NL MDL-0 | $229,200 | nominal ($100)
February 21, 2018 |
| 420 Great Rd #A9 | C4_28_A09 | Condo NL MDL-0 | $266,200 | nominal ($100)
April 22, 2019 |
| 420 Great Rd #A10 | C4_28_A10 | Condo NL MDL-0 | $251,400 | nominal ($100)
October 30, 2019 |
| 420 Great Rd #B1 | C4_28_B01 | Condo NL MDL-0 | $288,200 | $157,000
April 22, 2015 |
| 420 Great Rd #B2 | C4_28_B02 | Condo NL MDL-0 | $268,100 | $105,000
December 21, 1989 |
| 420 Great Rd #B3 | C4_28_B03 | Condo NL MDL-0 | $242,600 | $122,000
January 5, 2017 |
| 420 Great Rd #B4 | C4_28_B04 | Condo NL MDL-0 | $243,600 | $110,000
December 14, 2001 |
| 420 Great Rd #B5 | C4_28_B05 | Condo NL MDL-0 | $243,600 | $142,000
June 30, 2006 |
| 420 Great Rd #B6 | C4_28_B06 | Condo NL MDL-0 | $246,000 | $235,000
September 3, 2024 |
| 420 Great Rd #B7 | C4_28_B07 | Condo NL MDL-0 | $243,600 | $160,000
September 6, 2019 |
| 420 Great Rd #B8 | C4_28_B08 | Condo NL MDL-0 | $246,000 | $94,000
May 28, 2013 |
| 420 Great Rd #B9 | C4_28_B09 | Condo NL MDL-0 | $287,100 | $285,000
August 22, 2025 |
| 420 Great Rd #B10 | C4_28_B10 | Condo NL MDL-0 | $268,100 | $96,700
February 25, 1987 |
| 420 Great Rd #C1 | C4_28_C01 | Condo NL MDL-0 | $288,200 | $140,500
January 15, 2016 |
| 420 Great Rd #C2 | C4_28_C02 | Condo NL MDL-0 | $269,400 | $270,000
August 11, 2023 |
| 420 Great Rd #C3 | C4_28_C03 | Condo NL MDL-0 | $242,600 | $105,000
November 20, 2012 |
| 420 Great Rd #C4 | C4_28_C04 | Condo NL MDL-0 | $246,000 | $250,000
October 27, 2023 |
| 420 Great Rd #C5 | C4_28_C05 | Condo NL MDL-0 | $243,600 | $250,000
March 25, 2024 |
| 420 Great Rd #C6 | C4_28_C06 | Condo NL MDL-0 | $243,600 | $160,000
December 10, 2020 |
| 420 Great Rd #C7 | C4_28_C07 | Condo NL MDL-0 | $246,000 | $165,000
September 8, 2020 |
| 420 Great Rd #C8 | C4_28_C08 | Condo NL MDL-0 | $243,600 | $115,500
August 31, 2016 |
| 420 Great Rd #C9 | C4_28_C09 | Condo NL MDL-0 | $288,200 | $309,000
March 28, 2024 |
| 420 Great Rd #C10 | C4_28_C10 | Condo NL MDL-0 | $350,300 | $210,000
November 3, 2020 |
| 420-420 Great Rd | C4_28_M | Other, Open Space | $0 | nominal ($0)
January 6, 1987 |
What MassDEP has recorded
No tier-classified 21E site and no Activity and Use Limitation is mapped on this parcel.
What this means
- Assessed 535% above the median condo nl mdl-0 in Acton ($1,163,800, 438 parcels).
- The last sale price is 96% below the current assessment. Massachusetts assessments aim at full market value as of January 1 of the year before the fiscal year.
- Built before 1978: the Massachusetts Lead Law applies when a child under six lives there; ask for any lead inspection or letter of compliance.
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 420 Great Rd #C10
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