100 Boatswains Wy #403, Chelsea — property record card

Condo NL MDL-05 built in 1987 in Chelsea, assessed at $22,433,900 for fiscal year 2026; last transferred November 25, 2025 for a nominal sum.

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

Parcel

Location	100 Boatswains Wy #403, Chelsea MA 02150
Map and parcel ID	17-3 17-3AE
Use	Condo NL MDL-05 (use code 1021)
County	Suffolk

Valuation — fiscal year 2026

Building	$22,414,100
Land	$0
Other	$19,800
Total assessed	$22,433,900

Building

Year built	1987
Style	Condo-Apt
Living area	1,023 ft²
Rooms	4
Units	49

Last recorded sale

Price	nominal ($1)
Date	November 25, 2025
Deed	Registry of Deeds book 72140, page 160

49 assessor accounts on this parcel

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

Address	Account	Use	Assessed	Last sale
100 Boatswains Wy	17-3	Other, Open Space	$0	nominal ($0) April 15, 1987
100 Boatswains Wy #101	17-3A	Condo NL MDL-05	$474,400	$450,000 March 31, 2022
100 Boatswains Wy #102	17-3B	Condo NL MDL-05	$385,600	$190,000 June 12, 2002
100 Boatswains Wy #104	17-3C	Condo NL MDL-05	$385,600	$130,000 February 11, 2011
100 Boatswains Wy #106	17-3D	Condo NL MDL-05	$397,900	$142,500 July 24, 2009
100 Boatswains Wy #108	17-3E	Condo NL MDL-05	$478,200	$213,000 May 4, 2012
100 Boatswains Wy #110	17-3F	Condo NL MDL-05	$404,900	$370,000 August 16, 2023
100 Boatswains Wy #111	17-3G	Condo NL MDL-05	$476,600	$381,879 July 23, 2018
100 Boatswains Wy #112	17-3H	Condo NL MDL-05	$389,100	$307,500 March 31, 2017
100 Boatswains Wy #201	17-3I	Condo NL MDL-05	$480,900	$485,000 November 17, 2025
100 Boatswains Wy #202	17-3J	Condo NL MDL-05	$462,700	$485,000 September 19, 2024
100 Boatswains Wy #203	17-3K	Condo NL MDL-05	$484,100	$412,500 January 4, 2022
100 Boatswains Wy #204	17-3L	Condo NL MDL-05	$477,900	$405,000 October 1, 2020
100 Boatswains Wy #205	17-3M	Condo NL MDL-05	$481,300	$252,000 May 1, 2013
100 Boatswains Wy #206	17-3N	Condo NL MDL-05	$462,200	nominal ($0) July 21, 1987
100 Boatswains Wy #207	17-3O	Condo NL MDL-05	$480,900	nominal ($1) December 20, 2021
100 Boatswains Wy #208	17-3P	Condo NL MDL-05	$477,900	nominal ($0) October 22, 1987
100 Boatswains Wy #209	17-3Q	Condo NL MDL-05	$485,100	$260,000 November 25, 2014
100 Boatswains Wy #210	17-3R	Condo NL MDL-05	$449,000	nominal ($10) October 22, 2019
100 Boatswains Wy #301	17-3S	Condo NL MDL-05	$461,500	$245,500 August 8, 2012
100 Boatswains Wy #302	17-3T	Condo NL MDL-05	$461,500	$395,000 July 31, 2020
100 Boatswains Wy #303	17-3U	Condo NL MDL-05	$461,500	$113,500 January 30, 1998
100 Boatswains Wy #304	17-3V	Condo NL MDL-05	$481,000	$335,000 September 15, 2016
100 Boatswains Wy #305	17-3W	Condo NL MDL-05	$478,100	$420,000 December 23, 2021
100 Boatswains Wy #306	17-3X	Condo NL MDL-05	$461,000	$440,000 November 1, 2024
100 Boatswains Wy #307	17-3Y	Condo NL MDL-05	$486,800	$460,000 August 28, 2023
100 Boatswains Wy #308	17-3Z	Condo NL MDL-05	$466,100	nominal ($1) July 18, 2019
100 Boatswains Wy #309	17-3AA	Condo NL MDL-05	$462,700	$510,000 July 29, 2024
100 Boatswains Wy #310	17-3AB	Condo NL MDL-05	$508,800	nominal ($1) August 6, 2021
100 Boatswains Wy #401	17-3AC	Condo NL MDL-05	$462,700	$295,000 February 5, 2016
100 Boatswains Wy #402	17-3AD	Condo NL MDL-05	$463,600	$375,000 March 31, 2017
100 Boatswains Wy #403	17-3AE	Condo NL MDL-05	$542,300	$599,000 October 22, 2025
100 Boatswains Wy #404	17-3AF	Condo NL MDL-05	$477,900	nominal ($1) November 6, 2024
100 Boatswains Wy #405	17-3AG	Condo NL MDL-05	$476,900	$279,000 April 21, 2015
100 Boatswains Wy #406	17-3AH	Condo NL MDL-05	$461,000	$500,000 May 30, 2025
100 Boatswains Wy #407	17-3AI	Condo NL MDL-05	$465,700	$390,000 November 14, 2017
100 Boatswains Wy #408	17-3AJ	Condo NL MDL-05	$480,000	$400,000 December 15, 2022
100 Boatswains Wy #409	17-3AK	Condo NL MDL-05	$462,700	$96,000 August 1, 1996
100 Boatswains Wy #410	17-3AL	Condo NL MDL-05	$461,500	$399,000 February 6, 2020
100 Boatswains Wy #501	17-3AM	Condo NL MDL-05	$461,500	$510,000 October 2, 2025
100 Boatswains Wy #502	17-3AN	Condo NL MDL-05	$462,500	$368,988 July 15, 2016
100 Boatswains Wy #503	17-3AO	Condo NL MDL-05	$508,800	nominal ($100) July 17, 2024
100 Boatswains Wy #504	17-3AP	Condo NL MDL-05	$474,700	$279,000 December 21, 2004
100 Boatswains Wy #505	17-3AQ	Condo NL MDL-05	$478,100	$265,000 November 27, 2009
100 Boatswains Wy #506	17-3AR	Condo NL MDL-05	$461,000	$246,000 February 6, 2013
100 Boatswains Wy #507	17-3AS	Condo NL MDL-05	$462,700	nominal ($0) October 3, 1994
100 Boatswains Wy #508	17-3AT	Condo NL MDL-05	$477,900	$350,000 February 28, 2019
100 Boatswains Wy #509	17-3AU	Condo NL MDL-05	$519,200	$522,000 February 2, 2024
100 Boatswains Wy #510	17-3AV	Condo NL MDL-05	$509,900	nominal ($1) November 25, 2025

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): 4 active tier-classified 21E sites and 5 sites with an Activity and Use Limitation. All MassDEP sites in Chelsea.

What this means

Assessed 1536% above the median condo nl mdl-05 in Chelsea ($1,371,500, 256 parcels).
The last deed was recorded for a nominal sum: a transfer between family members, into a trust or a similar non-market sale. It says nothing about the market value.

Point at the centre of the assessor parcel — not a survey.

Data: Chelsea 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 100 Boatswains Wy #403

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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