21 Oak St, Unit 1

Boston, MA 02129

$1,297,500
Price
2
Beds
1,581 Sq. Ft.
$821 / Sq. Ft.
1,581
Sq. Ft.
$821
per Sq. Ft.
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Description

Prime Location Meets Contemporary Luxury! This custom-designed duplex offers nearly 1,600 sq ft of sophisticated living across two levels in a welcoming Charlestown neighborhood. The bright open-concept layout features hardwood floors throughout, windows on three sides equipped with custom remote-control shades, and a striking double-sided gas fireplace connecting the foyer to the living area. A chef’s kitchen boasts stainless appliances, granite countertops, wood cabinetry, and a breakfast bar....Prime Location Meets Contemporary Luxury! This custom-designed duplex offers nearly 1,600 sq ft of sophisticated living across two levels in a welcoming Charlestown neighborhood. The bright open-concept layout features hardwood floors throughout, windows on three sides equipped with custom remote-control shades, and a striking double-sided gas fireplace connecting the foyer to the living area. A chef’s kitchen boasts stainless appliances, granite countertops, wood cabinetry, and a breakfast bar. The spacious primary suite features dual closets and a newly remodeled spa-style bath, complemented by a generous second bedroom and guest half-bath. Additional upgrades include a new furnace and tankless water heater. Enjoy the convenience of private deeded parking, central air, in-unit laundry, and extra storage. Live steps from Whole Foods and Charlestown’s best dining, including Monument Restaurant & Prima, and Warren Tavern. With easy access to parks and transit.
  1. Listed by Lisa Sheehan • Berkshire Hathaway HomeServices Robert Paul Properties

Property Details for 21 Oak Street, Unit 1

Town
Boston
MLS Area
Charlestown
Area
MA-Boston-Charlestown, MA-Boston
Style
2/3 Family, Garden
Garage Spaces
0
Open Parking Spaces
1.00
Parking Spaces Total
1
Unit Placement
Street, Partially Below Grade
LISTING UPDATED: 03/29/2026 04:05 AM

Property Details for 21 Oak Street, Unit 1

StatusActive
MLS #73491508
Days on Market5
Taxes$13,562 / year
HOA Fees$300 / month
Compass TypeCondo
MLS TypeCondominium/Co-Op / Condo
Year Built1920
CountySuffolk County
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Location

Listing Courtesy of Berkshire Hathaway HomeServices Robert Paul Properties, Lisa Sheehan
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Building Information for 21 Oak Street, Unit 1

Building/Complex21 Oak StFloor1Stories2Residences3Pet PolicyAllowedPet Policy DetailsPets AllowedYear Built1920

Payment Calculator

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$7,727 per month

30 year fixed, 6.11% Interest

Principal and Interest

$6,297

Property Taxes

$1,130

HOA Dues

$300

The Payment Calculator is for illustrative purposes only.

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Property Information for 21 Oak Street, Unit 1

General Details
Property Details
  • Building Area Units: Square Feet
  • Community Features: Public Transportation, Shopping, Park, Walk/Jog Trails, Medical Facility, Bike Path, Highway Access, House of Worship, Marina, Private School, Public School, T-Station, University
  • Living Area: 1581.0
  • SqFt with Basement: Yes
  • Total Units: 3
  • Type of Condo: Condo
  • Waterfront: No
  • Water View: No
  • Year Built Details: Renovated Since
  • Year Converted: 2008
  • Year Built Source: Public Records
Features
Interior Features
  • Appliances: ENERGY STAR Qualified Refrigerator, ENERGY STAR Qualified Dryer, ENERGY STAR Qualified Dishwasher, ENERGY STAR Qualified Washer, Range, Oven
  • Basement Features: N
  • Num of Baths: 2.0
  • Num of Full Baths: 1
  • Num of Half Baths: 1
  • Bathrooms Total Decimal: 1.50
  • Bathrooms Total Integer: 2
  • FireplaceYN: Yes
  • Fireplaces: 1
  • Flooring: Wood, Tile
  • Laundry Features: In Unit
  • SpaYN: No
  • Window Features: Insulated Windows
Exterior Features
  • Construction: Frame
  • Entry Location: Street,Partially Below Grade
  • Exterior Features: Porch, Garden
  • Exterior Features: Garden Area, Porch
  • Patio And Porch Features: Porch
  • Roof Material: Shingle
  • Structure Type: 2/3 Family
Parking Features
  • Covered Spaces: .00
  • Garage: No
  • Garage Parking: Off-Street, Deeded, Improved Driveway
  • Open Parking: Yes
  • Parking Features: Off-Street, Deeded, Improved Driveway
  • Parking Features: Off-Street, Deeded, Improved Driveway
Utilities
  • Cooling: Central Air
  • Cooling: Yes
  • Electric: 110 Volts
  • Green Energy Efficient: Thermostat
  • Heating: Forced Air, Natural Gas
  • Heating: Yes
  • Sewer: City/Town Sewer
  • Utility Connections: for Gas Range
  • Water: Public
Property Information
Property Info
  • Year Round: Yes
  • Farm Land Area Units: Square Feet
  • WARRANTY: No
  • Lot Size Units: Acres
  • Disclosures: All information for the purpose of marketig only. Buyer / buyers rep to due dilligence. Seller makes no warranty. Taxes stated are tax exempt.
Tax Information
  • Tax ID: 1280750
  • Assessments: $1,171,200
  • Block: 01066
  • Book: 67563
  • Lot: 000
  • Map: 02
  • Tax Year: 2025
  • Zoning: CD
Building / Association Information
Living Characteristics
  • Beds Total: 2
  • Total Living Levels: 2
Other Building Characteristics
  • Cooling Zones: 1
  • Heat Zones: 1
Complex & Association Information
  • Association Fee Frequency: Monthly
  • Association Fee Includes: Water, Sewer, Insurance, Maintenance Structure, Maintenance Grounds, Snow Removal
  • Complex Complete: No
  • Management: Owner Association
  • Units Owner Occupied: 3
  • Owner Occupied Source: seller
  • Adult Community: No
Unit Information
Unit Information
  • Unit Building: 1
  • Unit Floor Level Integer: 1.0

Property History for 21 Oak Street, Unit 1

DateEvent & SourcePriceAppreciation
Mar 25, 2026

Listed (Active)

MLS PIN #73491508

$1,297,500—
Apr 29, 2022

Sold

MLS PIN #72903143

$979,000—
Mar 18, 2022

Contingent

MLS PIN #72903143

—
Oct 1, 2021

Listed (Active)

MLS PIN #72903143

$995,000—
DateEvent & SourcePrice
03/25/2026

Listed (Active)

MLS PIN #73491508

$1,297,500
04/29/2022

Sold

MLS PIN #72903143

$979,000
03/18/2022

Contingent

MLS PIN #72903143

—
10/01/2021

Listed (Active)

MLS PIN #72903143

$995,000

For completeness, Compass often displays two records for one sale: the MLS record and the public record.

Public Records for 21 Oak Street, Unit 1

Taxable ValueLand-Additions$990,100Total-
Tax Record2023$10,634 ($886 / month)
Home Facts
Beds2Total Finished SqFt1,581 SqFtAbove Grade Finished SqFt1,581 SqFtStyleCondominiumYear Built1920Year Renovated2018ZoningCDCountySUFFOLKAPNCBOS W:02 P:01066 S:006Fireplace TypeHas Fireplace

Schools near 21 Oak Street, Unit 1

This home is within Boston Public Schools.
Rating
School
Type
Grades
Distance
Warren-Prescott K-8 School
Public - PK to 8
Charlestown High School
Public - 7 to 12
Harvard-Kent Elementary School
Public - PK to 6
Eliot K-8 Innovation School
Public - PK to 8
Rating
School
Distance
Warren-Prescott K-8 School
PublicPK to 8

Charlestown High School
Public7 to 12

Harvard-Kent Elementary School
PublicPK to 6

Eliot K-8 Innovation School
PublicPK to 8

School ratings and boundaries are provided by GreatSchools.org and Pitney Bowes. This information should only be used as a reference. Proximity or boundaries shown here are not a guarantee of enrollment. Please reach out to schools directly to verify all information and enrollment eligibility.

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More information about 21 Oak Street, Unit 1, Boston, MA 02129

21 Oak Street, Unit 1 is a condo for sale in Boston, MA 02129. This property was listed for sale on March 25, 2026 by Berkshire Hathaway HomeServices Robert Paul Properties, it's currently listed at $1,297,500. It has been on the market for a total of 5 days and was last sold on April 29, 2022. This listing's school district is Boston Public Schools. Nearby schools include Warren-Prescott K-8 School, Charlestown High School and Harvard-Kent Elementary School. 21 Oak Street, Unit 1 is a 2-bed, 2-bath, 1,581 sqft condo built in 1920.

No guarantee, warranty or representation of any kind is made regarding the completeness or accuracy of descriptions or measurements (including square footage measurements and property condition), such should be independently verified, and Compass, Inc., its subsidiaries, affiliates and their agents and associated third parties expressly disclaims any liability in connection therewith. Photos may be virtually staged or digitally enhanced and may not reflect actual property conditions. Offers of compensation are subject to change at the discretion of the seller. No financial or legal advice provided. Equal Housing Opportunity.

Listing Courtesy of Berkshire Hathaway HomeServices Robert Paul Properties, Lisa Sheehan

The property listing data and information, or the images, set forth herein were provided to MLS Property Information Network, Inc., Martha's Vineyard MLS, CCIMLS, Link MLS, and Berkshire County Board of REALTORS from third party sources, including sellers, lessors and public records, and were compiled by MLS Property Information Network, Inc., Martha's Vineyard MLS, CCIMLS, Link MLS, and Berkshire County Board of REALTORS. The property listing data and information, and the images, are for the personal, non-commercial use of consumers having a good faith interest in purchasing or leasing listed properties of the type displayed to them and may not be used for any purpose other than to identify prospective properties which such consumers may have a good faith interest in purchasing or leasing. MLS Property Information Network, Inc., Martha's Vineyard MLS, CCIMLS, Link MLS, and Berkshire County Board of REALTORS and its subscribers disclaim any and all representations and warranties as to the accuracy of the property listing data and information, or as to the accuracy of any of the images, set forth herein.