21 Carlton St, Brookline, MA 02446
OFF MARKET

21 Carlton St
Brookline, MA 02446

Longwood
  • 2 Beds
  • 3 Baths
  • 1,634 sqft

$1,550,300

Trulia Estimate
as of Aug 23, 2026
Est. Refi. Payment $9,240/mo*
Refinance Your Home

$1,550,300

Trulia Estimate
as of Aug 23, 2026
Est. Refi. Payment $9,240/mo*
Refinance Your Home
2 Beds
3 Baths
1,634 sqft

Home Value

Trulia Estimate
$1.55M
Since last month
Increased$7K (+0.4%)
Since last year
Decreased$24K (-1.5%)
Since last sale
Increased$1M (+520%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value increased by +27% in the last 10 years
MonthEstimated value
2026
August 2026$1.55M
July 2026$1.54M
June 2026$1.6M
May 2026$1.62M
April 2026$1.58M
March 2026$1.59M
February 2026$1.53M
January 2026$1.53M
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
20 Chapel St #C312, Brookline, MA
0.24
Condo
$322,500
01/29/26
2
2
1,176
41 Carlton St #3, Brookline, MA
0.06
Condo
$998,000
06/08/26
2
1.5
1,125
43 Carlton St #2, Brookline, MA
0.07
Condo
$1,155,000
06/10/26
2
1.5
1,119
909 Beacon St #4, Boston, MA
0.18
Condo
$1,225,000
06/29/26
2
2.5
1,099
910 Beacon St #6, Boston, MA
0.21
Condo
$1,075,000
11/05/25
2
2
1,276
100 Riverway #6, Boston, MA
0.24
Condo
$855,000
09/30/25
2
2
990
20 Chapel St #B712, Brookline, MA
0.25
Condo
$1,350,000
02/18/26
2
2
1,177
20 Chapel St #APH4, Brookline, MA
0.25
Condo
$2,437,500
03/05/26
3
3
1,810
56 Marshal St #1, Brookline, MA
0.38
Condo
$1,257,500
07/02/26
2
2
1,575
16 Miner St #304, Boston, MA
0.32
Condo
$1,199,000
06/01/26
2
2
1,090

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
47 Monmouth St, Brookline, MA 02446
0.03
$3,611,200
5
3.5
3,700
Off Market
11 Monmouth Ct #5, Brookline, MA 02446
0.04
$714,900
1
1
950
Off Market
57 Monmouth St, Brookline, MA 02446
0.04
$3,750,000
5
3.5
3,500
Recently Sold
18 Monmouth Ct, Brookline, MA 02446
0.05
$3,113,600
6
3
3,304
Off Market
41 Carlton St #3, Brookline, MA 02446
0.06
$998,000
2
1.5
1,125
Recently Sold
43 Carlton St #2, Brookline, MA 02446
0.07
$1,155,000
2
1.5
1,119
Recently Sold
80 Monmouth St, Brookline, MA 02446
0.09
$3,243,800
7
3.5
3,582
Off Market
70 Park St #61, Brookline, MA 02446
0.10
$1,260,400
2
2
1,580
Off Market
70 Park St #64, Brookline, MA 02446
0.10
$1,070,800
2
1
1,224
Off Market
7 Hawes St, Brookline, MA 02446
0.11
$4,301,500
4
4.5
3,470
Off Market
1013 Beacon St, Brookline, MA 02446
0.12
-
7
10
6,815
Off Market
40 Hawes St, Brookline, MA 02446
0.13
$4,284,900
6
6.5
5,709
Off Market

Local Information

  • Map ViewExplore the area around 21 Carlton St.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Condo
Year Built
1961
Living Area
1,634 sqft
Price/Sqft
$949
Parking
Garage

About this House

This condo is located at 21 Carlton St, Brookline, MA. 21 Carlton St is in the Longwood neighborhood in Brookline, MA and in ZIP code 02446. This property has 2 bedrooms, 3 bathrooms and approximately 1,634 sqft of floor space. This property was built in 1961.
21 Carlton St, Brookline, MA 02446 is a 2 bedroom, 3 bathroom, 1,634 sqft condo in Longwood, built in 1961. It last sold for $250,040 on Feb 3, 1986. It is currently off market. The Trulia Estimate is $1,550,300, with a rent estimate of $5,403/month.

Home Details for 21 Carlton St

Interior Features

Interior Details
BasementNumber of Rooms: 6
Heating & Cooling
Heating: Forced AirAir ConditioningHeating Fuel: Forced Air
Levels, Entrance, & Accessibility
Stories: 2
Fireplace & Spa
Fireplace

Exterior Features

Exterior Home Features
Roof: AsphaltExterior: Brick
Parking & Garage
GarageParking: Garage Attached

Property Information

Year Built
Year Built: 1961
Property Type / Style
Property Type: Condo

Community

Units in Building: 1

Price and Tax history

DateEventPrice
Feb 3, 1986
Source: N/A
Sold
$250,040

Market trends in Brookline

Last updated July 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$1.22M
$182KMoM
Sale-to-List Price
99.7%
0.2%MoM
Price per sq ft
$816
$19MoM
Available listings
216
37MoM

Around this home

Neighborhood Overview

Longwood
See Local Highlights
Neighborhood stats provided by third party data sources.

What Locals Say about Longwood

  • Kelly G.
    "It feels like an oasis from Boston while still being so close to the city. I can be in our buildings backyard but still walk to fenway in 5 minutes"
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    Flag

LGBTQ Local Legal Protections

Frequently asked questions about 21 Carlton St

  • What is 21 Carlton St estimated to be worth?
    Trulia's estimated value for 21 Carlton St in Brookline, MA is $1,550,300.
  • What is the price history for 21 Carlton St?
    21 Carlton St in Brookline, MA last sold for $250,040 in February 1986.
  • Is Brookline a buyer's or seller's market?
    Brookline is currently a buyer's market, based on recent for-sale activity.
  • What's the median sale price in Brookline?
    The median sale price in Brookline is $1.22M. That is down $182K from the prior month.

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Apartments for Rent

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Off Market Homes Near 21 Carlton St

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