For sale

Price cut: $15K (8/20)

$700,000

21 Harvard St #4, Charlestown, MA 02129

1beds

676sqft

$4,837/mo

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Condominium

Built in 1899

-- sqft lot

$676,700 Zestimate^®

$1,036/sqft

$206/mo HOA

What's special

Juliette balcony skylightFreshly renovated bathroomCharming loftSoaring ceilingsFlooded with natural light

Tucked away in Charlestown’s City Square, this oversized one bedroom, one bathroom condo offers a rare blend of charm and modern updates. The bedroom features soaring ceilings and a charming loft, creating a flexible retreat perfect for additional storage, a reading nook, or a creative workspace. The freshly renovated bathroom is flooded with natural light. Open up the Juliette balcony skylight to enjoy fresh air and views, adding to the home's peaceful, tucked-away feel. Rich in character and thoughtfully updated, this one-of-a-kind residence offers the perfect balance of historic Charlestown charm and modern comfort.

44 days
1,640
102

Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 1
Bathrooms: 1
Full bathrooms: 1

Heating

Baseboard

Cooling

Window Unit(s)

Appliances

Laundry: In Building

Features

Flooring: Wood
Has basement: Yes
Number of fireplaces: 2

Interior area

Total structure area: 676
Total interior livable area: 676 sqft
Finished area above ground: 676

Property

Parking

Parking features: On Street
Has uncovered spaces: Yes

Details

Parcel number: W:02 P:03720 S:008,4727114
Zoning: CD

Construction

Type & style

Home type: Condo
Property subtype: Condominium

Condition

Year built: 1899

Utilities & green energy

Sewer: Public Sewer
Water: Public

Community & HOA

HOA

Services included: Water, Sewer, Insurance
HOA fee: $206 monthly

Location

Region: Charlestown

Financial & listing details

Price per square foot: $1,036/sqft
Tax assessed value: $562,600
Annual tax amount: $6,515
Date on market: 7/28/2026

Estimated market value

$676,700

$643,000 - $711,000

$3,250/mo

Price history

Date	Event	Price
8/20/2026	Price change	$700,000-2.1%$1,036/sqft
Source: MLS PIN #73555967 Report a problem
7/28/2026	Listed for sale	$715,000+15.3%$1,058/sqft
Source: MLS PIN #73555967 Report a problem
11/5/2024	Sold	$620,000+3.5%$917/sqft
Source: MLS PIN #73292549 Report a problem
9/24/2024	Contingent	$599,000$886/sqft
Source: MLS PIN #73292549 Report a problem
9/19/2024	Listed for sale	$599,000+22.2%$886/sqft
Source: MLS PIN #73292549 Report a problem
6/14/2023	Listing removed	--
Source: MLS PIN #73119989 Report a problem
6/3/2023	Listed for rent	$2,800+12%$4/sqft
Source: MLS PIN #73119989 Report a problem
7/1/2021	Listing removed	--
Source: Zillow Rental Network Premium Report a problem
5/4/2021	Listed for rent	$2,500+6.4%$4/sqft
Source: Zillow Rental Network Premium #72810759 Report a problem
2/19/2019	Listing removed	$2,350$3/sqft
Source: Leading Edge Real Estate #72441504 Report a problem
1/16/2019	Price change	$2,350-1.1%$3/sqft
Source: Leading Edge Real Estate #72441504 Report a problem
1/4/2019	Listed for rent	$2,375$4/sqft
Source: Leading Edge Real Estate Report a problem
11/30/2017	Sold	$490,000-1.8%$725/sqft
Source: Public Record Report a problem
10/18/2017	Pending sale	$499,000$738/sqft
Source: Coldwell Banker Residential Brokerage - Charlestown - Hammond #72238295 Report a problem
10/4/2017	Listed for sale	$499,000+73.3%$738/sqft
Source: Coldwell Banker - The Hammond Group #72238295 Report a problem
7/30/2012	Sold	$288,000-7.1%$426/sqft
Source: Public Record Report a problem
5/8/2012	Listed for sale	$309,900+11.5%$458/sqft
Source: JW Real Estate, LLC #71379349 Report a problem
5/11/2009	Sold	$278,000$411/sqft
Source: Public Record Report a problem

Public tax history

Year	Property taxes	Tax assessment
2025	$6,515 +10.5%	$562,600 +4%
2024	$5,895 +6.7%	$540,800 +5.1%
2023	$5,527 +2.7%	$514,600 +4%
2022	$5,382 +4%	$494,700 +2%
2021	$5,175 -0.3%	$485,000 -1.3%
2020	$5,189 +7.3%	$491,400 +7.1%
2019	$4,838 +5.6%	$459,000 +5%
2018	$4,582 +638%	$437,200 +3%
2017	$621 -86%	$424,300 +5%
2016	$4,445 +19.2%	$404,100 +31.2%
2015	$3,730 +7.6%	$308,000 +16.8%
2013	$3,465 -1.3%	$263,700 -2.1%
2012	$3,512 +2%	$269,300
2011	$3,444 +7.7%	$269,300
2010	$3,199	$269,300