12 Oak St #6, Cambridge — property record card

Residential Condominium built in 1900 in Cambridge, assessed at $3,736,800 for fiscal year 2026; last sold for $1,200,000 on July 8, 2025.

Rebuilt from the Cambridge assessor file as published by MassGIS — not the official card. For the official card, with owner, photo and sketch, ask the Cambridge assessor’s office.

Parcel

Location	12 Oak St #6
Map and parcel ID	83-63 83-63-6
Use	Residential Condominium (use code 102)
County	Middlesex

Valuation — fiscal year 2026

Building	$3,736,800
Land	$0
Total assessed	$3,736,800

Building

Year built	1900
Style	TOWNHSE-END
Living area	1,165 ft²
Rooms	6
Stories	2
Units	5

Last recorded sale

Price	$1,200,000
Date	July 8, 2025
Deed	Registry of Deeds book 84331, page 0230

5 assessor accounts on this parcel

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

Address	Account	Use	Assessed	Last sale
12 Oak St	83-63	CONDO-BLDG	$0	$205,000 June 4, 1986
12 Oak St #6	83-63-6	Residential Condominium	$1,110,600	$1,150,000 July 12, 2023
12 Oak St #8	83-63-8	Residential Condominium	$938,100	$1,200,000 July 8, 2025
12 Oak St #10	83-63-10	Residential Condominium	$897,400	$500,000 August 21, 2014
12 Oak St #12	83-63-12	Residential Condominium	$790,700	nominal ($1) April 24, 2023

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): 3 active tier-classified 21E sites and 7 sites with an Activity and Use Limitation. All MassDEP sites in Cambridge.

What this means

Assessed 28% above the median residential condominium in Cambridge ($2,924,050, 2,506 parcels).
The last sale price is 68% 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: Cambridge 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.

First page of a sample Massachusetts Property Report

The report for 12 Oak St #6

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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