21 Oak Street, Unit 1, CharlestownBoston, MA 02129MLS Number 73491508

  • Price: $1,197,500
  • Est. Mortgage of $/month
  • 57 Days on Market
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Federal 30-year interest rate: 6.36% last updated on May 14, 2026
* All Figures are estimates. Check with your bank or proposed mortgage company for actual interest rates.
This product uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.
  • 2Bedrooms
  • 0.11Acreage
  • 2Bathrooms
  • 1920Year Built
Contingent
21 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 0212921 Oak Street Boston MA 02129
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Cape Coastal Sotheby's International Realty

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Cape Coastal Sotheby's International Realty
Office: 508-477-6688
540 Falmouth Road (Mashpee Rotary)
Mashpee, MA 02649
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.

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More Info

Basic Information

  • Bedrooms2
  • Mls StatusContingent
  • Bathroom2
  • Contingency Pending P&S
  • Parcel Number 1280750
  • Unit Number1

Location

  • NeighborhoodCharlestown
  • SubdivisionCharlestown
  • Address21 Oak Street
  • Building Number21
  • CountySuffolk
  • StateMA
  • StreetOak Street
  • TownBoston
  • Zip02129

Interior

  • Flooring Wood, Tile

Utilities

  • Cooling Central Air
  • Cooling YN Yes
  • Electric 110 Volts
  • Heat SystemYes
  • Heating Forced Air, Natural Gas
  • Sewer Public Sewer
  • Water Source Public

Legal

  • ZoningCD

Other

  • Association Fee $300
  • Association Fee Frequency Monthly
  • Association Fee Includes
    • Insurance
    • Maintenance Grounds
    • Maintenance Structure
    • Sewer
    • Snow Removal
    • Water
  • Date Listed03/25/2026
  • Farm Land Area Units Square Feet
  • View Count4

Tax Information

  • Tax Assessed Value $1,171,200
  • Tax Year 2025
  • Taxes$13,562

Rooms

  • Bathrooms Total Decimal 1.5
  • Full Bath1
  • Half Baths1

Building

  • BasementN
  • Building Area Units Square Feet
  • Construction Materials Frame
  • Entry Level 1
  • FireplaceYes
  • Fireplaces Total 1
  • Patio And Porch Features Porch
  • Rooms5
  • Stories2
  • Utilities For Gas Range
  • Window Features Insulated Windows
  • Year Built1920
  • Year Built Details Renovated Since
  • Year Built Effective 2008
  • Year Built Source Public Records

Amenities

  • Amenities
    • Bike Path
    • Highway Access
    • House of Worship
    • Marina
    • Medical Facility
    • Park
    • Private School
    • Public School
    • Public Transportation
    • Shopping
    • T-Station
    • University
    • Walk/Jog Trails
  • Appliances IncludedENERGY STAR Qualified Refrigerator, ENERGY STAR Qualified Dryer, ENERGY STAR Qualified Dishwasher, ENERGY STAR Qualified Washer, Range, Oven
  • Green Energy Efficient Thermostat
  • Other AmenitiesFireplace, Garden
  • PetsYes

Parking

  • Parking Spaces1
  • Open Parking YN Yes
  • Parking Features Off Street, Deeded, Driveway

Basic Information

  • List Price$1,197,500
  • MLSPIN 73491508
  • Modification Date05/17/2026
  • Property SubTypeCondominium
  • Purchase Contract Date05/06/2026
  • Virtual TourView Tour

Property

  • Acreage0.11
  • Entry Location Unit Placement(Street, Partially Below Grade)

Exterior

  • Exterior Features Porch, Garden
  • RoofShingle

Property Information

  • Square Feet1,581
  • Building Area Source Public Records
  • Living Area 1,581
  • Lot Size Square Feet 4,791
  • Lot Size Units Acres
  • Structure Type 2/3 Family

Driving Directions

Listed by Lisa Sheehan of Berkshire Hathaway HomeServices Robert Paul Properties

Charlestown Boston, MA Demographics

There is no data available

Charlestown Boston, MA Real Estate Market Data

There is no data available

Charlestown Boston, MA Schools

School NameDistanceTypeGrades

The property listing data and information, or the Images, set forth herein were provided to MLS Property Information Network, Inc. (MLSPIN) from third party sources, including sellers, lessors and public records, and were compiled by MLSPIN. 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. MLSPIN 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.

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