505 Washington Av #48, Chelsea — property record card

Condo NL MDL-05 built in 1970 in Chelsea, assessed at $8,442,200 for fiscal year 2026; last sold for $355,000 on September 3, 2025.

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	505 Washington Av #48, Chelsea MA 02150
Map and parcel ID	86-46 86-46AF
Use	Condo NL MDL-05 (use code 1021)
County	Suffolk

Valuation — fiscal year 2026

Building	$8,442,200
Land	$0
Total assessed	$8,442,200

Building

Year built	1970
Style	Condo-Apt
Living area	775 ft²
Rooms	5
Units	33

Last recorded sale

Price	$355,000
Date	September 3, 2025
Deed	Registry of Deeds book 71832, page 273

33 assessor accounts on this parcel

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

Address	Account	Use	Assessed	Last sale
505 Washington Av	86-46	Other, Open Space	$0
505 Washington Av #11	86-46A	Condo NL MDL-05	$263,300	$190,000 March 8, 2022
505 Washington Av #12	86-46B	Condo NL MDL-05	$233,400	nominal ($10) March 28, 2025
505 Washington Av #13	86-46C	Condo NL MDL-05	$246,500	nominal ($1) March 15, 2024
505 Washington Av #14	86-46D	Condo NL MDL-05	$253,400	nominal ($1) February 13, 2002
505 Washington Av #15	86-46E	Condo NL MDL-05	$255,900	$165,000 December 8, 2017
505 Washington Av #16	86-46F	Condo NL MDL-05	$225,500	$95,000 December 18, 2013
505 Washington Av #17	86-46G	Condo NL MDL-05	$233,400	$86,900 October 31, 2000
505 Washington Av #18	86-46H	Condo NL MDL-05	$253,400	$80,000 May 31, 2000
505 Washington Av #21	86-46I	Condo NL MDL-05	$255,300	nominal ($1) May 14, 2002
505 Washington Av #22	86-46J	Condo NL MDL-05	$234,300	$96,000 December 24, 2001
505 Washington Av #23	86-46K	Condo NL MDL-05	$285,500	$175,000 November 2, 2005
505 Washington Av #24	86-46L	Condo NL MDL-05	$278,500	$250,000 November 25, 2020
505 Washington Av #25	86-46M	Condo NL MDL-05	$255,300	$81,500 January 28, 2013
505 Washington Av #26	86-46N	Condo NL MDL-05	$311,700	$315,000 December 2, 2022
505 Washington Av #27	86-46O	Condo NL MDL-05	$234,300	nominal ($0) September 23, 2021
505 Washington Av #28	86-46P	Condo NL MDL-05	$255,300	$156,000 May 6, 2003
505 Washington Av #31	86-46Q	Condo NL MDL-05	$289,400	$255,000 January 17, 2020
505 Washington Av #32	86-46R	Condo NL MDL-05	$254,100	$216,800 March 27, 2020
505 Washington Av #33	86-46S	Condo NL MDL-05	$284,100	nominal ($0) December 29, 1986
505 Washington Av #34	86-46T	Condo NL MDL-05	$257,800	$196,000 April 30, 2018
505 Washington Av #35	86-46U	Condo NL MDL-05	$259,000	$219,000 June 20, 2018
505 Washington Av #36	86-46V	Condo NL MDL-05	$285,700	$180,000 March 15, 2004
505 Washington Av #37	86-46W	Condo NL MDL-05	$271,700	nominal ($100) March 11, 2019
505 Washington Av #38	86-46X	Condo NL MDL-05	$310,100	$285,000 December 7, 2022
505 Washington Av #41	86-46Y	Condo NL MDL-05	$294,600	$220,000 November 16, 2020
505 Washington Av #42	86-46Z	Condo NL MDL-05	$234,300	nominal ($1) May 14, 2002
505 Washington Av #43	86-46AA	Condo NL MDL-05	$284,100	$100,625 February 1, 2013
505 Washington Av #44	86-46AB	Condo NL MDL-05	$255,300	$153,000 September 15, 2003
505 Washington Av #45	86-46AC	Condo NL MDL-05	$255,300	$160,000 December 5, 2002
505 Washington Av #46	86-46AD	Condo NL MDL-05	$285,700	$305,000 July 18, 2022
505 Washington Av #47	86-46AE	Condo NL MDL-05	$234,300	nominal ($1) May 14, 2002
505 Washington Av #48	86-46AF	Condo NL MDL-05	$311,700	$355,000 September 3, 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): 1 active tier-classified 21E site and 3 sites with an Activity and Use Limitation. All MassDEP sites in Chelsea.

What this means

Assessed 516% above the median condo nl mdl-05 in Chelsea ($1,371,500, 256 parcels).
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.
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: 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 505 Washington Av #48

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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