391 Walnut St #7, Newton — property record card
Residential Condominium built in 1940 on 0.93 acres in Newton, assessed at $11,547,600 for fiscal year 2026; last sold for $1,375,000 on July 18, 2025.
Rebuilt from the Newton assessor file as published by MassGIS — not the official card. For the official card, with owner, photo and sketch, ask the Newton assessor’s office.
Parcel
| Location | 391 Walnut St #7, Newton MA 02458 |
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| Map and parcel ID | 24017 0003 24017 0003F |
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| Use | Residential Condominium (use code 1020) |
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| Zoning | MR2 |
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| County | Middlesex |
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Valuation — fiscal year 2026
| Building | $11,547,600 |
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| Land | $0 |
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| Total assessed | $11,547,600 |
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Land
| Lot size | 0.93 acres (40,594 ft²) |
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Building
| Year built | 1940 |
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| Style | Other |
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| Living area | 3,039 ft² |
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| Rooms | 8 |
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| Units | 12 |
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Last recorded sale
| Price | $1,375,000 |
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| Date | July 18, 2025 |
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| Deed | Registry of Deeds book 84380, page 415 |
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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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| 391 Walnut St | 24017 0003MAIN | Other, Open Space | $0 | nominal ($0) January 25, 2008 |
| 391 Walnut St #1 | 24017 0003 | Residential Condominium | $616,900 | $680,000 May 14, 2025 |
| 391 Walnut St #2 | 24017 0003A | Residential Condominium | $696,000 | $615,000 July 30, 2018 |
| 391 Walnut St #3 | 24017 0003B | Residential Condominium | $256,400 | $284,800 June 30, 2023 |
| 391 Walnut St #4 | 24017 0003C | Residential Condominium | $1,335,800 | $1,375,000 July 18, 2025 |
| 391 Walnut St #5 | 24017 0003D | Residential Condominium | $1,545,800 | $1,050,000 September 1, 2004 |
| 391 Walnut St #6 | 24017 0003E | Residential Condominium | $225,600 | $168,283 October 31, 2013 |
| 391 Walnut St #7 | 24017 0003F | Residential Condominium | $1,623,300 | $1,075,000 July 24, 2009 |
| 391 Walnut St #8 | 24017 0003G | Residential Condominium | $1,356,200 | $1,295,000 August 24, 2020 |
| 391 Walnut St #9 | 24017 0003H | Residential Condominium | $1,405,100 | $809,000 June 15, 2012 |
| 391 Walnut St #10 | 24017 0003J | Residential Condominium | $1,212,800 | $472,500 January 7, 2010 |
| 391 Walnut St #11 | 24017 0003K | Residential Condominium | $1,273,700 | $986,000 March 20, 2017 |
What MassDEP has recorded
No tier-classified 21E site and no Activity and Use Limitation is mapped on this parcel.
Within about 500 m (a third of a mile): 1 active tier-classified 21E site and 4 sites with an Activity and Use Limitation. All MassDEP sites in Newton.
What this means
- Assessed 436% above the median residential condominium in Newton ($2,155,400, 1,525 parcels).
- The last sale price is 88% 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: Newton 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 391 Walnut St #7
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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