21 -3 Hartwell St, Waltham — property record card

Residential Condominium built in 1900 in Waltham, assessed at $2,412,200 for fiscal year 2026; last sold for $550,000 on November 25, 2025.

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

Parcel

Location	21 -3 Hartwell St
Map and parcel ID	R074 004 0013 002 R074 004 0013 003
Use	Residential Condominium (use code 102)
County	Middlesex

Valuation — fiscal year 2026

Building	$2,412,200
Land	$0
Total assessed	$2,412,200

Building

Year built	1900
Style	CONDO-TNHS
Living area	1,931 ft²
Rooms	7
Stories	2
Units	4

Last recorded sale

Price	$550,000
Date	November 25, 2025
Deed	Registry of Deeds book 84928, page 65

4 assessor accounts on this parcel

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

Address	Account	Use	Assessed	Last sale
21 -1 Hartwell St	R074 004 0013 001	Residential Condominium	$602,300	$550,000 November 25, 2025
21 -2 Hartwell St	R074 004 0013 002	Residential Condominium	$601,500	nominal ($1) October 25, 2017
21 -3 Hartwell St	R074 004 0013 003	Residential Condominium	$623,500	$580,000 July 21, 2021
21 -4 Hartwell St	R074 004 0013 004	Residential Condominium	$584,900	$615,000 August 6, 2024

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 1 site with an Activity and Use Limitation. All MassDEP sites in Waltham.

What this means

Assessed 41% above the median residential condominium in Waltham ($1,705,450, 642 parcels).
The last sale price is 77% 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: Waltham 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 21 -3 Hartwell 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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