20 Mystic St 1, Boston — property record card

Residential Condominium built in 1870 in Boston, assessed at $2,270,700 for fiscal year 2023; last sold for $1,100,000 on April 26, 2022.

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	20 Mystic St 1, Boston MA 02129
Map and parcel ID	0200045000 0200045002
Use	Residential Condominium (use code 102)
County	Suffolk

Valuation — fiscal year 2023

Building	$2,270,700
Land	$0
Total assessed	$2,270,700

Building

Year built	1870
Style	Semi-Det
Living area	1,786 ft²
Rooms	5
Stories	2

Last recorded sale

Price	$1,100,000
Date	April 26, 2022
Deed	Registry of Deeds book 67536, page 319

4 assessor accounts on this parcel

Condominium units or several buildings share one parcel; each has its own assessment.

Address	Account	Use	Assessed	Last sale
20 Mystic St	0200045000	Other, Open Space	$0	nominal ($0) June 16, 2010
20 Mystic St 1	0200045002	Residential Condominium	$1,015,200	$1,100,000 April 26, 2022
20 Mystic St 2	0200045004	Residential Condominium	$685,900	$649,900 January 11, 2017
20 Mystic St 3	0200045006	Residential Condominium	$569,600	nominal ($9) December 21, 2016

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): 0 active tier-classified 21E sites and 3 sites with an Activity and Use Limitation. All MassDEP sites in Boston.

What this means

Assessed 18% above the median residential condominium in Boston ($1,926,500, 10,170 parcels).
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.

First page of a sample Massachusetts Property Report

The report for 20 Mystic St 1

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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