A rare opportunity to own a home just steps from Union Square, one of Somerville’s most vibrant and historic destinations, located only a quarter mile from the Green Line station. Nestled on a quiet side street at the base of Prospect Hill, where the first American flag was raised in 1776, 21 Stone combines neighborhood charm with urban convenience. From the private entry, you’re welcomed into an open light-filled living and dining space, where tall ceilings and large windows set a warm, inviting tone. The kitchen is both stylish and functional, with a southeast facing breakfast nook that captures the morning light. Additional perks include private laundry and storage in the basement, an off-street parking space, and shared patio ideal for outdoor gatherings. With award winning restaurants, cafés, and markets just around the corner, this home offers modern comfort rooted in the rich history and energy of Union Square.
Property Details
Price:
$849,000
MLS #:
73500433
Status:
Active
Beds:
2
Baths:
1
Type:
Condo
Subtype:
Condominium
Neighborhood:
unionsquare
Listed Date:
Apr 13, 2026
Finished Sq Ft:
1,021
Total Sq Ft:
1,021
Year Built:
1900
See this Listing
Schools
Interior
Above Grade Finished Area
1021
Appliances
Range, Dishwasher, Refrigerator, Freezer, Washer, Dryer
Bathrooms
1 Full Bathroom
Cooling
Window Unit(s)
Flooring
Hardwood
Heating
Baseboard, Steam, Natural Gas
Laundry Features
In Building
Exterior
Community Features
Public Transportation, Shopping, Park, Walk/Jog Trails, Bike Path, Highway Access, Public School, T-Station
Construction Materials
Frame
Exterior Features
Patio
Open Parking Spaces
1
Parking Features
Off Street, Deeded
Parking Spots
1
Parking Total
1
Patio And Porch Features
Patio
Roof
Shingle
Stories
1
Financial
HOA Fee
$250
HOA Fee Frequency
Monthly
HOA Includes
Water, Sewer, Insurance, Reserve Funds
Tax Year
2025
Taxes
$4,245
Map
Community
- Address21 Stone Ave # 21 Somerville MA
- CitySomerville
- CountyMiddlesex
- Zip Code02143
Subdivisions in Somerville
Market Summary
Current real estate data for Condo in Somerville as of Apr 21, 2026
153
Condo Listed
41
Avg DOM
766
Avg $ / SqFt
$978,519
Avg List Price
Property Summary
- 21 Stone Ave # 21 Somerville MA is a Condo for sale in Somerville, MA, 02143. It is listed for $849,000 and features 2 beds, 1 baths, and has approximately 1,021 square feet of living space, and was originally constructed in 1900. The current price per square foot is $832. The average price per square foot for Condo listings in Somerville is $766. The average listing price for Condo in Somerville is $978,519. To schedule a showing of MLS#73500433 at 21 Stone Ave # 21 in Somerville, MA, contact your Cornerstone Real Estate agent at 617-238-7400.
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Courtesy of Berkshire Hathaway HomeServices Warren Residential. The property listing data and information set forth herein were provided to MLS Property Information Network, Inc. from third party sources, including sellers, lessors and public records, and were compiled by MLS Property Information Network, Inc. The property listing data and information 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. and its subscribers disclaim any and all representations and warranties as to the accuracy of the property listing data and information set forth herein.
21 Stone Ave # 21
Somerville, MA