288 Sidney St, Cambridge — property record card

Residential Condominium built in 1989 in Cambridge, assessed at $80,130,500 for fiscal year 2026; last sold for $862,500 on May 9, 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	288 Sidney St
Map and parcel ID	65-45 65-45-93
Use	Residential Condominium (use code 102)
County	Middlesex

Valuation — fiscal year 2026

Building	$80,130,500
Land	$0
Total assessed	$80,130,500

Building

Year built	1989
Style	TOWNHOUSE
Living area	1,646 ft²
Rooms	7
Stories	3
Units	102

Last recorded sale

Price	$862,500
Date	May 9, 2025
Deed	Registry of Deeds book 84071, page 0592

102 assessor accounts on this parcel

Condominium units or several buildings share one parcel; each has its own assessment (first 60 shown).

Address	Account	Use	Assessed	Last sale
1 Henry St	65-45-78	Residential Condominium	$868,000	nominal ($100) September 9, 2004
3 Henry St	65-45-77	Residential Condominium	$1,016,500	$975,000 August 7, 2023
4 Chestnut St	65-45-79	Residential Condominium	$817,300	$199,000 July 30, 1998
5 Henry St	65-45-76	Residential Condominium	$991,400	nominal ($0) July 21, 2003
6 Chestnut St	65-45-80	Residential Condominium	$953,400	$157,000 October 26, 1992
7 Henry St	65-45-75	Residential Condominium	$991,400	$340,000 March 16, 2001
8 Chestnut St	65-45-81	Residential Condominium	$1,105,000	nominal ($1) January 8, 2018
9 Henry St	65-45-74	Residential Condominium	$1,093,400	$571,000 June 27, 2013
10 Chestnut St	65-45-82	Residential Condominium	$1,151,700	nominal ($1) January 8, 2018
11 Henry St	65-45-73	Residential Condominium	$817,300	$122,000 April 12, 2013
12 Chestnut St	65-45-83	Residential Condominium	$1,016,500	$566,000 June 7, 2013
14 Chestnut St	65-45-84	Residential Condominium	$810,100	$212,000 September 2, 1998
20 Chestnut St	65-45	CONDO-BLDG	$0	$160,000 January 1, 1998
20 Chestnut St #1	65-45-1	Residential Condominium	$496,300	$234,000 January 9, 2012
20 Chestnut St #2	65-45-2	Housing Authority	$673,900	$95,000 April 5, 1989
20 Chestnut St #3	65-45-3	Housing Authority	$711,000	$95,000 April 5, 1989
20 Chestnut St #4	65-45-4	Housing Authority	$704,000	$95,000 April 5, 1989
20 Chestnut St #5	65-45-5	Housing Authority	$678,900	$95,000 April 5, 1989
20 Chestnut St #6	65-45-6	Housing Authority	$697,300	$95,000 April 5, 1989
20 Chestnut St #7	65-45-7	Housing Authority	$699,400	$95,000 April 5, 1989
20 Chestnut St #8	65-45-8	Housing Authority	$706,800	$95,000 April 5, 1989
20 Chestnut St #9	65-45-9	Residential Condominium	$465,100	nominal ($1) November 10, 2022
20 Chestnut St #10	65-45-10	Housing Authority	$665,900	$95,000 April 5, 1989
20 Chestnut St #11	65-45-11	Residential Condominium	$516,900	$510,000 November 22, 2022
20 Chestnut St #12	65-45-12	Residential Condominium	$624,700	$649,000 November 16, 2023
20 Chestnut St #13	65-45-13	Residential Condominium	$176,000	$300,000 November 9, 2015
20 Chestnut St #14	65-45-14	Residential Condominium	$176,000	$165,000 February 28, 2023
20 Chestnut St #15	65-45-15	Residential Condominium	$251,500	$300,000 October 4, 2016
20 Chestnut St #16	65-45-16	Residential Condominium	$176,000	$110,000 April 25, 1989
20 Chestnut St #17	65-45-17	Residential Condominium	$176,000	$111,017 December 16, 2022
20 Chestnut St #18	65-45-18	Residential Condominium	$176,000	$110,000 June 7, 1989
20 Chestnut St #19	65-45-19	Residential Condominium	$176,000	$110,000 April 25, 1989
20 Chestnut St #20	65-45-20	Residential Condominium	$521,600	$310,000 November 8, 2013
20 Chestnut St #21	65-45-21	Residential Condominium	$733,800	nominal ($10) August 3, 2020
20 Chestnut St #22	65-45-22	Residential Condominium	$852,500	$400,000 April 29, 2005
20 Chestnut St #23	65-45-23	Residential Condominium	$733,500	$370,000 April 20, 2007
20 Chestnut St #24	65-45-24	Residential Condominium	$748,000	$398,000 October 8, 2010
20 Chestnut St #25	65-45-25	Residential Condominium	$811,500	$388,000 April 22, 2008
20 Chestnut St #26	65-45-26	Residential Condominium	$772,300	$753,000 April 23, 2021
20 Chestnut St #27	65-45-27	Residential Condominium	$887,500	nominal ($100) December 7, 2020
20 Chestnut St #28	65-45-28	Residential Condominium	$845,600	$795,000 October 22, 2020
20 Chestnut St #29	65-45-29	Residential Condominium	$903,100	$660,000 August 21, 2015
20 Chestnut St #30	65-45-30	Residential Condominium	$802,700	$408,000 August 30, 2004
20 Chestnut St #31	65-45-31	Residential Condominium	$725,800	nominal ($100) August 22, 2022
20 Chestnut St #32	65-45-32	Residential Condominium	$787,900	$189,000 April 28, 1989
20 Chestnut St #33	65-45-33	Residential Condominium	$809,300	$765,000 October 6, 2021
20 Chestnut St #34	65-45-34	Residential Condominium	$734,500	$416,000 September 29, 2009
20 Chestnut St #35	65-45-35	Residential Condominium	$802,300	nominal ($1) July 7, 2010
20 Chestnut St #36	65-45-36	Residential Condominium	$734,800	$305,000 September 14, 2001
20 Chestnut St #37	65-45-37	Residential Condominium	$772,900	$862,500 May 9, 2025
20 Chestnut St #38	65-45-38	Residential Condominium	$847,700	nominal ($100) February 18, 2022
20 Chestnut St #39	65-45-39	Residential Condominium	$769,700	$770,000 September 30, 2020
20 Chestnut St #40	65-45-40	Residential Condominium	$879,400	$875,000 August 4, 2017
20 Chestnut St #41	65-45-41	Residential Condominium	$905,900	$800,000 November 17, 2023
20 Chestnut St #42	65-45-42	Residential Condominium	$759,300	$400,000 July 29, 2005
20 Chestnut St #43	65-45-43	Residential Condominium	$837,800	$310,000 June 26, 2002
20 Chestnut St #44	65-45-44	Residential Condominium	$864,600	$429,000 August 31, 2009
20 Chestnut St #45	65-45-45	Residential Condominium	$869,400	$175,000 June 19, 1996
20 Chestnut St #46	65-45-46	Residential Condominium	$909,100	$965,000 May 24, 2024
20 Chestnut St #47	65-45-47	Residential Condominium	$866,100	nominal ($100) January 25, 2008

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

What this means

Assessed 2640% above the median residential condominium in Cambridge ($2,924,050, 2,506 parcels).
The last sale price is 99% 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 288 Sidney 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)

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