299 Walnut St 1, Brookline — property record card

Residential Condominium built in 1938 in Brookline, assessed at $4,105,300 for fiscal year 2027; last sold for $2,475,000 on June 16, 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	299 Walnut St 1, Brookline MA 02445
Map and parcel ID	320-05-01 320-05-02
Use	Residential Condominium (use code 102)
Zoning	T-5
County	Norfolk

Valuation — fiscal year 2027

Building	$4,098,500
Land	$0
Other	$6,800
Total assessed	$4,105,300

Building

Year built	1938
Style	DUPLEX CONDO
Living area	3,055 ft²
Rooms	8
Stories	3

Last recorded sale

Price	$2,475,000
Date	June 16, 2025
Deed	Registry of Deeds book 42463, page 224

2 assessor accounts on this parcel

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

Address	Account	Use	Assessed	Last sale
299 Walnut St 1	320-05-02	Residential Condominium	$2,155,800	$2,475,000 June 16, 2025
299 Walnut St 2	320-05-03	Residential Condominium	$1,949,500	$1,750,000 May 2, 2016

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

What this means

Assessed 11% above the median residential condominium in Brookline ($3,706,500, 1,424 parcels).
The last sale price is 40% 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 299 Walnut St 1

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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