0ONE Winthrop Sq #ES1/5, Cambridge — property record card

OFFICE-CONDO built in 1998 in Cambridge, assessed at $76,446,200 for fiscal year 2026; last sold for $2,700,000 on June 3, 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	0ONE Winthrop Sq #ES1/5
Map and parcel ID	162-74 162-74-ES1/5
Use	OFFICE-CONDO (use code 343)
County	Middlesex

Valuation — fiscal year 2026

Building	$76,446,200
Land	$0
Total assessed	$76,446,200

Building

Year built	1998
Style	INDUSTRL CONDO
Living area	34,515 ft²
Units	13

Last recorded sale

Price	$2,700,000
Date	June 3, 2025
Deed	Registry of Deeds book 84175, page 0057

13 assessor accounts on this parcel

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

Address	Account	Use	Assessed	Last sale
0ONE Winthrop Sq #ES1/5	162-74-ES1/5	OFFICE-CONDO	$24,615,300	nominal ($0) August 26, 1999
93 Winthrop St #WSC1	162-74-WSC1	RETAIL-CONDO	$10,597,900	nominal ($0) August 26, 1999
93 Winthrop St #WSC2	162-74-WSC2	RETAIL-CONDO	$5,464,400	nominal ($0) August 26, 1999
95 Winthrop St	162-74	CONDO-BLDG	$0	$2,130,000 May 3, 1982
95 Winthrop St #PEB/3	162-74-PEB/3	RETAIL-CONDO	$7,852,000	$6,840,000 November 27, 2013
95 Winthrop St #WSC3	162-74-WSC3	OFFICE-CONDO	$4,675,300	nominal ($0) August 26, 1999
95 Winthrop St #WSR4	162-74-WSR4	OFFICE-CONDO	$3,465,600	nominal ($0) August 26, 1999
95 Winthrop St #WSR5A	162-74-WSR5A	CNDO LUX	$2,256,700	$950,000 July 8, 2008
95 Winthrop St #WSR5B	162-74-WSR5B	CNDO LUX	$2,135,400	$2,000,000 October 28, 2022
95 Winthrop St #WSR5C	162-74-WSR5C	CNDO LUX	$1,065,300	nominal ($0) March 14, 2012
95 Winthrop St #WSR5D	162-74-WSR5D	CNDO LUX	$2,776,000	$2,700,000 June 3, 2025
95 Winthrop St #WSR6	162-74-WSR6	CNDO LUX	$5,812,400	$5,750,000 May 27, 2021
95 Winthrop St #WSR7	162-74-WSR7	CNDO LUX	$5,729,900	$3,974,000 November 1, 2013

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 0 sites with an Activity and Use Limitation. All MassDEP sites in Cambridge.

What this means

The last sale price is 96% below the current assessment. Massachusetts assessments aim at full market value as of January 1 of the year before the fiscal year.

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 0ONE Winthrop Sq #ES1/5

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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