40B Union St, Nantucket — property record card

Condo House built in 1960 in Nantucket, assessed at $6,930,900 for fiscal year 2026; last sold for $1,900,000 on October 7, 2025.

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

Parcel

Location	40B Union St, Nantucket MA 02554
Map and parcel ID	42.3.2 89 4232_89_4
Use	Condo House (use code 1022)
Zoning	ROH
County	Nantucket

Valuation — fiscal year 2026

Building	$6,903,300
Land	$0
Other	$27,600
Total assessed	$6,930,900

Building

Year built	1960
Style	Condominium
Living area	1,290 ft²
Units	5

Last recorded sale

Price	$1,900,000
Date	October 7, 2025
Deed	Registry of Deeds book 2031, page 032

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
40 40A Union St	4232_89_66	Other, Open Space	$0
40A Union St	4232_89_1	Condo House	$1,992,300	$1,900,000 October 7, 2025
40B Union St	4232_89_4	Condo House	$2,183,600	$1,500,000 December 22, 2020
40C Union St	4232_89_2	Condo House	$855,700	$275,000 December 3, 1997
40D Union St	4232_89_3	Condo House	$1,899,300	$1,128,000 April 3, 2022

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 3 sites with an Activity and Use Limitation. All MassDEP sites in Nantucket.

What this means

Assessed 161% above the median condo house in Nantucket ($2,659,950, 52 parcels).
The last sale price is 73% 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: Nantucket 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 40B Union 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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