0 Knowlton Cir, Upton — property record card
Other, Non-Taxable Condominium Common Land on 20.21 acres in Upton, assessed at $24,611,200 for fiscal year 2026; last sold for $512,700 on November 21, 2025.
Rebuilt from the Upton assessor file as published by MassGIS — not the official card. For the official card, with owner, photo and sketch, ask the Upton assessor’s office.
Parcel
| Location | 0 Knowlton Cir, Upton MA 01568 |
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| Map and parcel ID | 203-125 |
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| Use | Other, Non-Taxable Condominium Common Land (use code 996) |
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| County | Worcester |
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Valuation — fiscal year 2026
| Building | $23,730,900 |
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| Land | $880,300 |
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| Total assessed | $24,611,200 |
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Land
| Lot size | 20.21 acres (880,348 ft²) |
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Building
| Living area | 2,427 ft² |
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| Units | 53 |
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Last recorded sale
| Price | $512,700 |
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| Date | November 21, 2025 |
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| Deed | Registry of Deeds book 72868, page 314 |
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53 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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| 0 Knowlton Cir | 203-125 | Other, Non-Taxable Condominium Common Land | $880,300 | nominal ($100) September 18, 2003 |
| 1 Knowlton Cir | 203-125.13B | Residential Condominium | $554,400 | nominal ($100) August 6, 2024 |
| 2 Knowlton Cir | 203-125.01A | Residential Condominium | $516,000 | $350,000 November 14, 2019 |
| 3 Knowlton Cir | 203-125.13A | Residential Condominium | $519,800 | $512,700 November 21, 2025 |
| 4 Knowlton Cir | 203-125.01B | Residential Condominium | $493,500 | $355,005 September 30, 2019 |
| 5 Knowlton Cir | 203-125.12B | Residential Condominium | $554,400 | $344,900 January 18, 2004 |
| 6 Knowlton Cir | 203-125.01C | Residential Condominium | $516,000 | nominal ($100) December 27, 2021 |
| 7 Knowlton Cir | 203-125.12A | Residential Condominium | $566,900 | $359,900 October 30, 2020 |
| 8 Knowlton Cir | 203-125.18A | Residential Condominium | $516,000 | $355,000 June 14, 2019 |
| 9 Knowlton Cir | 203-125.11C | Residential Condominium | $519,800 | $326,047 October 30, 2003 |
| 10 Knowlton Cir | 203-125.18B | Residential Condominium | $246,800 | $160,000 October 29, 2013 |
| 11 Knowlton Cir | 203-125.11B | Residential Condominium | $493,500 | $336,050 November 10, 2003 |
| 12 Knowlton Cir | 203-125.18C | Residential Condominium | $557,400 | $565,000 August 5, 2024 |
| 13 Knowlton Cir | 203-125.11A | Residential Condominium | $559,200 | $511,087 April 6, 2023 |
| 14 Knowlton Cir | 203-125.17A | Residential Condominium | $516,000 | $298,000 January 29, 2016 |
| 15 Knowlton Cir | 203-125.10C | Residential Condominium | $519,800 | $269,000 August 25, 2014 |
| 16 Knowlton Cir | 203-125.17B | Residential Condominium | $246,800 | $163,100 April 26, 2016 |
| 17 Knowlton Cir | 203-125.10B | Residential Condominium | $246,800 | $179,000 August 1, 2019 |
| 18 Knowlton Cir | 203-125.17C | Residential Condominium | $575,900 | $324,900 May 28, 2004 |
| 19 Knowlton Cir | 203-125.10A | Residential Condominium | $519,800 | $285,000 May 12, 2016 |
| 21 Knowlton Cir | 203-125.09C | Residential Condominium | $516,000 | $350,500 March 11, 2019 |
| 23 Knowlton Cir | 203-125.09B | Residential Condominium | $246,800 | $160,000 October 29, 2014 |
| 25 Knowlton Cir | 203-125.09A | Residential Condominium | $516,000 | $355,000 January 15, 2020 |
| 27 Knowlton Cir | 203-125.08C | Residential Condominium | $516,000 | $360,000 May 30, 2018 |
| 29 Knowlton Cir | 203-125.08B | Residential Condominium | $491,700 | nominal ($10) April 19, 2024 |
| 31 Knowlton Cir | 203-125.08A | Residential Condominium | $259,900 | $160,000 May 7, 2004 |
| 32 Knowlton Cir | 203-125.16A | Residential Condominium | $558,200 | $302,000 June 30, 2015 |
| 33 Knowlton Cir | 203-125.07C | Residential Condominium | $516,000 | $285,000 April 10, 2009 |
| 34 Knowlton Cir | 203-125.16B | Residential Condominium | $246,800 | $160,000 April 23, 2004 |
| 35 Knowlton Cir | 203-125.07B | Residential Condominium | $273,600 | nominal ($0) September 21, 2005 |
| 36 Knowlton Cir | 203-125.16C | Residential Condominium | $519,800 | $288,000 August 12, 2016 |
| 37 Knowlton Cir | 203-125.07A | Residential Condominium | $519,800 | nominal ($100) March 18, 2022 |
| 39 Knowlton Cir | 203-125.06A | Residential Condominium | $538,500 | nominal ($1) September 3, 2024 |
| 41 Knowlton Cir | 203-125.06B | Residential Condominium | $248,700 | nominal ($100) July 2, 2019 |
| 43 Knowlton Cir | 203-125.06C | Residential Condominium | $519,800 | $295,000 July 25, 2014 |
| 45 Knowlton Cir | 203-125.05C | Residential Condominium | $520,300 | nominal ($100) March 28, 2022 |
| 47 Knowlton Cir | 203-125.05B | Residential Condominium | $508,700 | nominal ($100) April 1, 2024 |
| 49 Knowlton Cir | 203-125.05A | Residential Condominium | $260,100 | $160,000 July 31, 2015 |
| 51 Knowlton Cir | 203-125.04C | Residential Condominium | $530,000 | $285,000 September 16, 2016 |
| 52 Knowlton Cir | 203-125.15A | Residential Condominium | $530,400 | $359,900 June 6, 2019 |
| 53 Knowlton Cir | 203-125.04B | Residential Condominium | $506,500 | $258,500 April 8, 2014 |
| 54 Knowlton Cir | 203-125.15B | Residential Condominium | $250,800 | $180,000 January 16, 2020 |
| 55 Knowlton Cir | 203-125.04A | Residential Condominium | $520,300 | $440,000 September 16, 2021 |
| 56 Knowlton Cir | 203-125.15C | Residential Condominium | $524,200 | nominal ($0) January 1, 2004 |
| 57 Knowlton Cir | 203-125.03C | Residential Condominium | $547,500 | $455,000 June 24, 2021 |
| 59 Knowlton Cir | 203-125.03B | Residential Condominium | $236,200 | $169,500 April 26, 2019 |
| 60 Knowlton Cir | 203-125.14A | Residential Condominium | $516,000 | $420,000 June 30, 2021 |
| 61 Knowlton Cir | 203-125.03A | Residential Condominium | $493,800 | $348,504 October 28, 2004 |
| 62 Knowlton Cir | 203-125.14B | Residential Condominium | $248,700 | nominal ($100) September 18, 2013 |
| 63 Knowlton Cir | 203-125.02C | Residential Condominium | $526,600 | $361,000 June 5, 2020 |
| 64 Knowlton Cir | 203-125.14C | Residential Condominium | $519,800 | $485,000 September 29, 2022 |
| 65 Knowlton Cir | 203-125.02B | Residential Condominium | $517,700 | $570,000 October 4, 2024 |
| 67 Knowlton Cir | 203-125.02A | Residential Condominium | $246,900 | $153,900 January 23, 2012 |
What MassDEP has recorded
No tier-classified 21E site and no Activity and Use Limitation is mapped on this parcel.
What this means
- The last sale price is 98% 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: Upton 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 0 Knowlton Cir
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