100 Marion St 18 & P18, Brookline — property record card

Residential Condominium built in 1962 in Brookline, assessed at $23,279,200 for fiscal year 2027; last sold for $675,000 on June 5, 2025.

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

Parcel

Location	100 Marion St 18 & P18, Brookline MA 02446
Map and parcel ID	214-35-00 214-35-10
Use	Residential Condominium (use code 102)
County	Norfolk

Valuation — fiscal year 2027

Building	$23,279,200
Land	$0
Total assessed	$23,279,200

Building

Year built	1962
Style	LOW RISE CONDO
Living area	976 ft²
Rooms	4
Stories	1

Last recorded sale

Price	$675,000
Date	June 5, 2025

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
100 Marion St 10 & P-m	214-35-03	Residential Condominium	$514,700	$315,000 July 14, 2006
100 Marion St 11	214-35-04	Residential Condominium	$541,900	nominal ($1) September 23, 2021
100 Marion St 12 & P-c	214-35-05	Residential Condominium	$585,200	$290,000 February 20, 2003
100 Marion St 14 & P-d	214-35-06	Residential Condominium	$626,100	nominal ($10) August 1, 2016
100 Marion St 15 & P-e	214-35-07	Residential Condominium	$597,400	$258,000 January 28, 2002
100 Marion St 16 & P16	214-35-08	Residential Condominium	$673,300	$355,000 August 16, 2007
100 Marion St 17 & P9	214-35-09	Residential Condominium	$702,600	$768,000 May 26, 2022
100 Marion St 18 & P18	214-35-10	Residential Condominium	$829,300	nominal ($100) June 3, 2008
100 Marion St 21 & P12	214-35-11	Residential Condominium	$806,000	nominal ($100) December 29, 2022
100 Marion St 22 & P6	214-35-12	Residential Condominium	$825,600	nominal ($1) August 23, 2012
100 Marion St 23 & P-i	214-35-13	Residential Condominium	$607,700	$570,000 June 1, 2018
100 Marion St 24 & P-g	214-35-14	Residential Condominium	$643,700	$262,500 August 22, 2001
100 Marion St 25 & P-h	214-35-15	Residential Condominium	$602,300	$377,600 November 9, 2012
100 Marion St 26 &P13-20	214-35-16	Residential Condominium	$796,900	$675,000 February 11, 2022
100 Marion St 27 & P15	214-35-17	Residential Condominium	$787,600	$740,000 October 6, 2022
100 Marion St 28 & P7	214-35-18	Residential Condominium	$815,400	$480,000 June 25, 2007
100 Marion St 31 & P3	214-35-19	Residential Condominium	$806,000	nominal ($100) October 21, 2016
100 Marion St 32 & P2	214-35-20	Residential Condominium	$821,500	nominal ($100) December 1, 2021
100 Marion St 33 & P-b	214-35-21	Residential Condominium	$576,200	$550,000 April 25, 2025
100 Marion St 34 & P-k	214-35-22	Residential Condominium	$693,000	$675,000 June 5, 2025
100 Marion St 35 & P-j	214-35-23	Residential Condominium	$648,200	$385,200 December 21, 2012
100 Marion St 36 & P11	214-35-24	Residential Condominium	$709,200	$497,000 November 24, 2014
100 Marion St 37 & P1	214-35-25	Residential Condominium	$787,600	$672,000 June 29, 2015
100 Marion St 38 & P8	214-35-26	Residential Condominium	$802,700	$445,000 July 23, 2004
100 Marion St 41 & P10	214-35-27	Residential Condominium	$801,500	$364,000 May 1, 2002
100 Marion St 42 & P5	214-35-28	Residential Condominium	$821,500	$446,500 May 26, 2011
100 Marion St 43 & P-f	214-35-29	Residential Condominium	$607,700	nominal ($100) December 24, 2019
100 Marion St 44 & P19	214-35-30	Residential Condominium	$739,100	$360,000 June 25, 2008
100 Marion St 45 & P-l	214-35-31	Residential Condominium	$656,400	nominal ($1) August 11, 2020
100 Marion St 46 & P17	214-35-32	Residential Condominium	$712,900	$269,000 August 1, 2001
100 Marion St 47 & P14	214-35-33	Residential Condominium	$791,600	$730,000 November 3, 2017
100 Marion St 48 & P4	214-35-34	Residential Condominium	$819,500	nominal ($100) December 24, 2019
100 Marion St Bmt & P-a	214-35-35	Residential Condominium	$528,900	$269,000 August 27, 2014

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 2 sites with an Activity and Use Limitation. All MassDEP sites in Brookline.

What this means

Assessed 528% above the median residential condominium in Brookline ($3,706,500, 1,424 parcels).
The last sale price is 97% 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: Brookline assessor file for fiscal year 2027, 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 Marion St 18 & P18

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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