11A Mystic Av, Boston — property record card
Mixed Use (Primarily Commercial, some Residential) built in 1899 on 0.08 acres in Boston, assessed at $468,500 for fiscal year 2023; last sold for $1,200,000 on July 1, 2020.
Rebuilt from the Boston assessor file as published by MassGIS — not the official card. For the official card, with owner, photo and sketch, ask the Boston assessor’s office.
Parcel
| Location | 11A Mystic Av, Boston MA 02129 |
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| Map and parcel ID | 0201853000 |
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| Use | Mixed Use (Primarily Commercial, some Residential) (use code 031) |
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| County | Suffolk |
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Valuation — fiscal year 2023
| Building | $308,800 |
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| Land | $159,700 |
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| Total assessed | $468,500 |
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Land
| Lot size | 0.08 acres (3,485 ft²) |
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Building
| Year built | 1899 |
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| Style | RC: ONE RES UNIT |
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| Living area | 3,395 ft² |
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| Stories | 1 |
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Last recorded sale
| Price | $1,200,000 |
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| Date | July 1, 2020 |
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| Deed | Registry of Deeds book 63286, page 81 |
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What MassDEP has recorded
- RTN 3-0050596 — Former Mixed Use Properties, tier classified (active), status TIERII · MassDEP file
Within about 500 m (a third of a mile): 2 active tier-classified 21E sites and 8 sites with an Activity and Use Limitation. All MassDEP sites in Boston.
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.
- 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: Boston assessor file for fiscal year 2023, via MassGIS, retrieved October 30, 2026; MassDEP sites retrieved the same day. Sources and freshness. No owner names are published.

The report for 11A Mystic Av
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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