21 Summer St, Natick — property record card
Mixed Use (Primarily Residential, some Commercial) built in 2025 on 0.23 acres in Natick, assessed at $5,465,000 for fiscal year 2027; last sold for $760,000 on November 12, 2020.
Rebuilt from the Natick assessor file as published by MassGIS — not the official card. For the official card, with owner, photo and sketch, ask the Natick assessor’s office.
Parcel
| Location | 21 Summer St, Natick MA 01760 |
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| Map and parcel ID | 43-00000380 |
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| Use | Mixed Use (Primarily Residential, some Commercial) (use code 013) |
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| Zoning | DM |
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| County | Middlesex |
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Valuation — fiscal year 2027
| Building | $4,914,100 |
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| Land | $550,900 |
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| Total assessed | $5,465,000 |
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Land
| Lot size | 0.23 acres (9,888 ft²) |
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Building
| Year built | 2025 |
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| Living area | 26,429 ft² |
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| Units | 13 |
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Last recorded sale
| Price | $760,000 |
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| Date | November 12, 2020 |
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| Deed | Registry of Deeds book 76151, page 521 |
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What MassDEP has recorded
- RTN 3-0036812 — 21 Summer Street, tier classified (active), status TIERII · MassDEP file
Within about 500 m (a third of a mile): 4 active tier-classified 21E sites and 6 sites with an Activity and Use Limitation. All MassDEP sites in Natick.
What this means
- A tier-classified site is a release still being cleaned up under the Massachusetts Contingency Plan; the MassDEP file shows the stage reached.
Point at the centre of the assessor parcel — not a survey.
Data: Natick assessor file for fiscal year 2027, via MassGIS, retrieved October 30, 2026; MassDEP sites retrieved the same day. Sources and freshness. No owner names are published.

The report for 21 Summer St
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