RENTED JUN 30, 2026

21 Hartwell St Unit 3 Waltham, MA 02453

Roberts Neighborhood

Estimated Value: $601,000 - $729,000

3 Beds
2 Baths
1,287 Sq Ft
$529/Sq Ft Est. Value

Sale Details

Date Sold: July 21, 2021

Last sale price $580,000 $451 Per Sq Ft

Est. 17% increase in value since last sale

Current estimated payment $4,217 / mo

Highlights

  • Medical Services
  • 4-minute walk to Brandeis/Roberts
  • Shops
  • Property is near public transit and schools
  • Park
  • Heating System Uses Natural Gas

About This Home

As of June 2026

Spacious and well-maintained 3-bedroom, 2-bath apartment conveniently located just a short distance from Brandeis University and the Brandeis/Roberts Commuter Rail station, with quick access to Bentley University. This bright and inviting unit features generously sized bedrooms, two full bathrooms, in-unit laundry, and three off-street parking spaces. Conveniently located near shopping, dining, public transportation, and major commuter routes.

Last Agent to Rent the Property

Loftus & Glynn Team

William Raveis R.E. & Home Services Listed on: 06/15/2026

Co-Listed By

Grace Glynn

William Raveis R.E. & Home Services

Last Renter's Agent

Matt Mackin

TKM Capital LLC

TKM Capital LLC

Range of Values:

--
Value Increase
--
Percent Increase
--
Adjusted for Inflation
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Average Value
Not Available
List Price
Sold Price
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Property Details

Home Type

  • Multi-Family

Year Built

  • 2010

Home Design

  • 1,287 Sq Ft Home
  • Property Attached
  • Entry on the 3rd floor

Bedrooms and Bathrooms

  • 3 Bedrooms
  • Primary bedroom located on second floor
  • 2 Full Bathrooms

Parking

  • 3 Open Parking Spaces
  • 3 Car Parking Spaces

Utilities

  • Cooling Available
  • Heating System Uses Natural Gas

Additional Features

  • Laundry on main level
  • Property is near public transit and schools
  • Basement

Listing and Financial Details

  • Security Deposit $3,850
  • Property Available on 8/22/26
  • Rent includes water, trash collection, snow removal, laundry facilities, parking
  • Assessor Parcel Number 4827724

Community Details

Overview

  • Property has a Home Owners Association

Amenities

  • Medical Services
  • Shops

Recreation

  • Park

Pet Policy

  • Pets allowed on a case-by-case basis

Property Details

Home Type

Multi-Family

Year Built

2010

Lot Details

0 Sq Ft Lot

Rental Info

  • Pets Allowed: Yes w/ Restrictions
  • Available Date: 2026-08-22
  • Lease Term: Term of Rental(12+)
  • Available Now: No
  • Deposit Required: Yes
  • FIRST MON REQD: Yes
  • INSURANCE REQD: Yes
  • LAST MON REQD: Yes
  • REFERENCES REQD: Yes
  • SEC DEPOSIT: 3850

Listing Details

  • Property Type: Residential Lease
  • Property Sub Type: Attached (Townhouse/Rowhouse/Duplex)
  • Entry Level: 3
  • MLSPIN_PET_RESTRICTIONS_ALLOW: Pets Negotiable
  • Special Features: None
  • Year Built: 2010

Interior Features

  • Fireplace YN: No
  • Total Bedrooms: 3
  • Room Bedroom2 Level: Second
  • Room Bedroom3 Level: Second
  • Basement YN: Yes
  • Full Bathrooms: 2
  • Total Bathrooms: 2
  • Room Master Bedroom Level: Second
  • Room Dining Room Level: First
  • Room Kitchen Level: First
  • Laundry Features: First Floor, In Unit
  • Room Living Room Level: First
  • Above Grade Finished Sq Ft: 1287
  • Living Area: 1287
  • Spa YN: No
  • MAIN LO: M59500
  • MAIN SO: AN9021

Exterior Features

  • Home Warranty YN: No
  • Waterfront YN: No

Garage/Parking

  • Garage YN: No
  • Open Parking Spaces: 3
  • Total Parking Spaces: 3

Utilities

  • Heating: Natural Gas
  • Cooling Y N: Yes
  • Heating YN: Yes

Condo/Co-op/Association

  • Association YN: Yes
  • Community Features: Public Transportation, Shopping, Park, Medical Facility, Highway Access, House of Worship, Public School, T-Station, University
  • Rent Includes: Water, Trash Collection, Snow Removal, Laundry Facilities, Parking
  • Senior Community YN: No

Lot Info

  • Parcel Number: 4827724
  • Farm Land Area Units: Square Feet
  • Lot Size Sq Ft: 0.31
  • Lot Size Units: Acres
  • Property Attached YN: Yes

Multi Family

  • Basement Included Sq Ft: No

Ownership History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Name Owned For Owner Type

Purchase Details

Listed on
Jun 9, 2021
Closed on
Jul 21, 2021
Sold by
Bought by
Seller's Agent
Shahani Real Estate Team
Compass
Buyer's Agent
Grace Glynn
William Raveis R.E. & Home Services
List Price
$599,900
Sold Price
$580,000
Premium/Discount to List
-$19,900
-3.32%
Current Estimated Value
$681,312

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Estimated Appreciation
$101,312
Avg. Annual Appreciation
3.25%
Original Mortgage
$430,000
Outstanding Balance
$382,877
Interest Rate
2.96%
Mortgage Type
Purchase Money Mortgage
Estimated Equity
$298,435

Purchase Details

Closed on
Jun 13, 2017
Sold by
Bought by

Purchase Details

Closed on
Jun 16, 2010
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$346,275
Interest Rate
5.03%
Mortgage Type
Purchase Money Mortgage
Source: Public Records

Home Values in the Area

Source: Public Records

Average Home Value in this Area





Source: Public Records

Agents Specializing in Roberts, MA

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Purchase History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Buyer Sale Price Title Company
$580,000 None Available
-- --
$364,500 --
$364,500 --
Source: Public Records

Mortgage History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Status Borrower Loan Amount
Open $430,000
Previous Owner $238,416
Closed $346,275
Source: Public Records

Property History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Event Price List to Sale Price per Sq Ft Prior Sale
06/30/2026 06/30/26 Rented $3,850 0.0% --
06/24/2026 06/24/26 Under Contract -- -- --
06/15/2026 06/15/26 For Rent $3,850 0.0% --
07/21/2021 07/21/21 Sold $580,000 -3.3% $349 / Sq Ft View Prior Sale
06/18/2021 06/18/21 Pending -- -- --
06/16/2021 06/16/21 For Sale $599,900 +3.4% $361 / Sq Ft
06/13/2021 06/13/21 Off Market $580,000 -- --
06/09/2021 06/09/21 For Sale $599,900 +71.9% $361 / Sq Ft
04/30/2012 04/30/12 Sold $349,000 -0.3% $271 / Sq Ft View Prior Sale
02/05/2012 02/05/12 Pending -- -- --
10/25/2011 10/25/11 Price Changed $349,900 -4.0% $272 / Sq Ft
10/06/2011 10/06/11 For Sale $364,500 -- $283 / Sq Ft
Source: MLS Property Information Network (MLS PIN)

Tax History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2025 $5,671 $577,500 $0 $577,500
2024 $5,409 $561,100 $0 $561,100
2023 $5,791 $561,100 $0 $561,100
2022 $6,080 $545,800 $0 $545,800
2021 $5,831 $515,100 $0 $515,100
2020 $5,698 $476,800 $0 $476,800
2019 $5,163 $407,800 $0 $407,800
2018 $5,142 $407,800 $0 $407,800
2017 $4,792 $381,500 $0 $381,500
2016 $4,670 $381,500 $0 $381,500
2015 $4,445 $338,500 $0 $338,500
Source: Public Records

Agents Affiliated with this Home

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Map

Source: MLS Property Information Network (MLS PIN)

MLS Number: 73535909

MLS Property Information Network (MLS PIN)

APN: WALT-000074-000004-000013-000003

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