Recently Viewed Properties
See This Home
Save This Listing
Close

View All Photos

$1,297,500 Just Listed

  • For Sale
  • Active
  • Condo
  • 2 Beds
  • 1 Full Bath
  • 1 Partial Bath
  • 1,581 Sq. Ft.
  • 0.11 Acres
  • Updated 2 days ago

Next open house:

Open House: 11:30 AM - 1:00 PM

Saturday 3/28 11:30 AM - 1:00 PM

21 Oak St #1,Boston, MA 02129

21 Oak St #1BostonMA02129

Get directions

View more dates

Join us at 21 Oak St #1 on:

  • Open House: 11:30 AM - 1:00 PM

    Sunday 3/29 11:30 AM - 1:00 PM

    21 Oak St #1,Boston, MA 02129
    21 Oak St #1BostonMA02129
See This Home
Save This Home
See This Home
Save This Home
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.

Full Property Details for 21 Oak St #1

General

  • Price: $1,297,500
  • HOA FEE: $300/month
  • Taxes: $13,562 (2025)
  • Status: Active
  • Type: Condo
  • MLS ID: 73491508
  • Updated: 3/25/2026
  • Added to Site: 2 day(s) ago

Rooms

Bathrooms

  • Total Bathrooms: 2
  • Full Bathrooms: 1
  • Half Bathrooms: 1

Bedrooms

  • Total Bedrooms: 2

Parking

  • Parking Features: Off Street, Deeded, Driveway

Location

  • County: Suffolk

Structural Information

  • Basement: Yes
  • Stories/Levels: 2
  • Square Feet: 1,581
  • Year Built: 1920

Lot Features

  • Lot Size (Acres): 0.11

Financial Considerations

  • Association Fee: $300
  • Tax Amount: $13,562
  • Tax Year: 2025

Disclosures and Reports

  • Exclusions: Washer/Dryer, Light Fixture Over Dining Table
  • Disclosures/Rstr.: All information for the purpose of marketig only. Buyer / buyers rep to due dilligence. Seller makes no warranty. Taxes stated are tax exempt.
  • Property ID: 1280750
  • Block/Lot/Section: 1066

Listed by Berkshire Hathaway HomeServices Robert Paul Properties, Lisa Sheehan

Quickly Find Out More

* Indicates a required field

Yes, I would like more information. Please use and/or share my information with a Coldwell Banker ® affiliated agent to contact me about my real estate needs. By clicking Send Message, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If an Coldwell Banker affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (BHGRE®, CENTURY 21®, Corcoran®, ERA®, or Sotheby’s International Realty®). I acknowledge that I have read and agree to the Terms of Use and Privacy Notice.

We Value Your Privacy

Listing agent

— 21 Oak St #1 —

  • Lisa Sheehan

    Berkshire Hathaway HomeServices Robert Paul Properties

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Schools serving 21 Oak St #1

School District:Boston School District
NameGradesDistance
Warren-Prescott K-8 School
50 School Street, Boston, MA 02129
PK-80.3 mi
Harvard-Kent Elementary School
50 Bunker Hill Street, Boston, MA 02129
PK-50.6 mi
Eliot K-8 Innovation School
16 Charter Street, Boston, MA 02113
PK-81.3 mi
Charlestown High School
240 Medford Street, Boston, MA 02129
9-120.4 mi
East Boston High School
86 White Street, Boston, MA 02128
9-121.7 mi
Quincy Upper School
152 Arlington Street, Boston, MA 02116
6-122.2 mi
Snowden Int'L High School
150 Newbury Street, Boston, MA 02116
9-122.1 mi
Boston Adult Academy
20 Church St, Boston, MA 02116
9-122.2 mi
Excel High School
95 G. Street, Boston, MA 02127
9-123.5 mi
Disclaimer: School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 21 Oak St #1 Get Price Alerts and Save Property

Date
Details
Price
Change
Source
3/25/2026
Listed
$1,297,500
12.83%
MLS
10/21/2021
Sold
$1,150,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History for 21 Oak St #1

Year
Property Taxes
Change
Tax Assessment
Change
2021
$29,481
—
-100%
2021
$29,481
22%
$2,763,000
21%
2020
$24,181
10%
$2,289,903
10%
2019
$21,935
8%
$2,081,156
7%
2018
$20,382
2%
$1,944,866
3%
2017
$20,016
6%
$1,890,119
10%
2016
$18,905
10%
$1,718,640
21%
2015
$17,176
-4%
$1,418,300
—
2014
$17,842
—
$1,418,300
—
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Estimate the Cost for 21 Oak St #1

$
Down Payment
%
$
%

$
$
$

*These costs are estimates, and the interest rates assume exceptional credit standing.

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Listed by Berkshire Hathaway HomeServices Robert Paul Properties, Lisa Sheehan

Similar Properties near 21 Oak St #1

This is a carousel with tiles that activate property listing cards. Use the previous and next buttons to navigate.

380 Bunker Hill St, Boston, MA 02129 - Photo 1
$1,379,000

380 Bunker Hill St  #111  Boston, MA 02129

  • Condo
  • Active
  • Updated 10 days ago
  • 2
    Beds
  • 2
    Total Baths
  • 1,415
    Sq. Ft.
8 - 10 Museum Way, Cambridge, MA 02141 - Photo 1
$1,250,000
Open House

8 - 10 Museum Way  #1824  Cambridge, MA 02141

  • Condo
  • Active
  • Updated 8 days ago
  • 2
    Beds
  • 2
    Total Baths
  • 1,046
    Sq. Ft.
100 Lovejoy Wharf, Boston, MA 02114 - Photo 1
$1,269,000

100 Lovejoy Wharf  #6C  Boston, MA 02114

  • Condo
  • Active
  • Updated 4 days ago
  • 2
    Beds
  • 2
    Total Baths
  • 1,244
    Sq. Ft.
100 Lovejoy Wharf, Boston, MA 02114 - Photo 1
$1,349,000

100 Lovejoy Wharf  #6B  Boston, MA 02114

  • Condo
  • Active
  • 2
    Beds
  • 2
    Total Baths
  • 1,256
    Sq. Ft.

Just Listed near 21 Oak St #1

This is a carousel with tiles that activate property listing cards. Use the previous and next buttons to navigate.

81 Broadway, Chelsea, MA 02150 - Photo 1 Just Listed
$399,000
Open House

81 Broadway  #11  Chelsea, MA 02150

  • Condo
  • Active
  • Updated 17 hours ago
  • 2
    Beds
  • 1
    Total Bath
  • 610
    Sq. Ft.
Listed by The Quirk Group (617) 266-4430 and Carolyn Cuff (617) 331-0683
89 Blossom St, Chelsea, MA 02150 - Photo 1 Just Listed
$460,000
Open House

89 Blossom St  #89  Chelsea, MA 02150

  • Townhouse
  • Active
  • Updated 21 hours ago
  • 3
    Beds
  • 1
    Total Bath
  • 1,120
    Sq. Ft.
Listed by Marc Green (781) 244-6397
6 Medford St, Chelsea, MA 02150 - Photo 1 Just Listed
$459,000

6 Medford St  Chelsea, MA 02150

  • Single Family
  • Active
  • Updated 2 days ago
  • 4
    Beds
  • 2
    Total Baths
  • 1,760
    Sq. Ft.
23 Admirals Wy, Chelsea, MA 02150 - Photo 1 Just Listed
$700,000
Open House

23 Admirals Wy  #23  Chelsea, MA 02150

  • Townhouse
  • Active
  • Updated 4 hours ago
  • 2
    Beds
  • 3
    Total Baths
  • 2,060
    Sq. Ft.

Price Reduced near 21 Oak St #1

This is a carousel with tiles that activate property listing cards. Use the previous and next buttons to navigate.

87 Parker St, Chelsea, MA 02150 - Photo 1 Price Reduced
-$13,888 (-2.4%)
$565,000

87 Parker St  #402  Chelsea, MA 02150

  • Condo
  • Active
  • Updated 16 hours ago
  • 2
    Beds
  • 2
    Total Baths
  • 812
    Sq. Ft.
87 Parker St, Chelsea, MA 02150 - Photo 1 Price Reduced
-$13,888 (-2.4%)
$565,000

87 Parker St  #403  Chelsea, MA 02150

  • Condo
  • Active
  • Updated 16 hours ago
  • 2
    Beds
  • 2
    Total Baths
  • 807
    Sq. Ft.
7 Russell St, Cambridge, MA 02140 - Photo 1 Price Reduced
-$20,000 (-2.37%)
$825,000
Open House

7 Russell St  #1  Cambridge, MA 02140

  • Condo
  • Active
  • Updated 2 days ago
  • 2
    Beds
  • 1
    Total Bath
  • 990
    Sq. Ft.
Listed by Barbara Currier (617) 593-7070 and Sally Cousins (617) 864-4430
773 Concord Ave, Cambridge, MA 02138 - Photo 1 Price Reduced
-$56,900 (-6.73%)
$789,000
Open House

773 Concord Ave  #103  Cambridge, MA 02138

  • Condo
  • Active
  • Updated 9 hours ago
  • 2
    Beds
  • 2
    Total Baths
  • 920
    Sq. Ft.
Listed by Martha Delaney (617) 413-1051 and Lynn Findlay (617) 909-6979

Recent Sales near 21 Oak St #1

This is a carousel with tiles that activate property listing cards. Use the previous and next buttons to navigate.

103 Russell St, Boston, MA 02129 - Photo 1 Sold
$1,125,000

103 Russell St  #2  Boston, MA 02129

  • Condo
  • Closed
  • 3
    Beds
  • 2
    Total Baths
  • 1,252
    Sq. Ft.
364 Bunker Hill St, Boston, MA 02129 - Photo 1 Sold
$1,350,000

364 Bunker Hill St  #1  Boston, MA 02129

  • Condo
  • Closed
  • 3
    Beds
  • 3
    Total Baths
  • 1,529
    Sq. Ft.
77 Russell St, Boston, MA 02129 - Photo 1 Sold
$1,485,000

77 Russell St  Boston, MA 02129

  • Single Family
  • Closed
  • 4
    Beds
  • 2
    Total Baths
  • 1,480
    Sq. Ft.
339 Bunker Hill St, Boston, MA 02129 - Photo 1 Sold
$1,210,000

339 Bunker Hill St  Boston, MA 02129

  • Multi-Family
  • Closed
  • 3
    Units
  • 4
    Total Beds
  • 0.03
    Acres
Listed and Sold by Grace Bloodwell

21 Oak St #1, Boston, MA 02129 (MLS# 73491508) is a Condo property with 2 bedrooms, 1 full bathroom and 1 partial bathroom. 21 Oak St #1 is currently listed for $1,297,500 and was received on March 25, 2026. Want to learn more about 21 Oak St #1? Do you have questions about finding other Condo real estate for sale in Charlestown? You can browse all Charlestown real estate or contact a Coldwell Banker agent to request more information.

Tour this property