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21 Stone Ave # 21, Somerville MA 02143

Somerville, MA 02143 • Union Square
$849,000
Est. $5,097/month
2
Beds
1
Baths
1,021
Sq Ft
$832
Price/Sq Ft
1900
Year Built
21
Days on Market
Active Listed Apr 13, 2026 • MLS# 73500433 Copied!

About this home

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.

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Property Overview

Property Type
Condominium
Listing Type
For Sale
Year Built
1900
Bedrooms
2
Full Bathrooms
1
Living Area
1,021 sq ft
Total Rooms
5
Stories
1
Entry Level
1

Facts & Features

Home Facts

Type Residential
Style Condominium
Year Built 1900
Living Area 1,021 sq ft
Bedrooms 2
Full Baths 1
Total Rooms 5

Interior

Heating Baseboard, Steam, Natural Gas
Cooling Window Unit(s)
Flooring Hardwood
Appliances Range, Dishwasher, Refrigerator, Freezer, Washer, Dryer
Fireplace None
Basement N
Laundry In Building
Features None

Exterior

Construction Frame
Architecture None
Roof Shingle

Parking

Features Off Street, Deeded
Total Spaces 1

Utilities

Electric None
Water Public
Sewer Public Sewer
Gas None
Other None

Financial

Annual Tax $4,245
Assessed Value $793,400

Interior Features

Flooring: Hardwood
Appliances: Range, Dishwasher, Refrigerator, Freezer, Washer, Dryer
Interior Features:
Windows:
Basement: N
Laundry: In Building
Security:

Construction & Materials

Year Built: 1900
Structure Type: 2/3 Family
Exterior Materials: Frame
Roof: Shingle
Foundation:
Stories: 1

Heating, Cooling & Utilities

Heating: Baseboard, Steam, Natural Gas
Heating Zones: 1
Cooling: Window Unit(s)
Hot Water:
Water Source: Public
Sewer: Public Sewer

Parking & Garage

Total Parking Spaces: 1
Parking Features: Off Street, Deeded

Location

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Neighborhood

Union Square

21 Stone Ave # 21, Somerville MA 02143

Somerville, MA 02143

Walkability

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Nearby Schools

School information not available for this location.

Monthly Payment Calculator

Monthly Payment
$0
Principal, interest, taxes & insurance
Loan Amount
$0
After down payment
Total Interest
$0
Over life of loan
Total Cost
$0
Including down payment
%
Down: $0
%

Monthly Payment Breakdown

Principal & Interest $0
Property Tax $354
Homeowners Insurance $200
HOA Fee $250/mo
PMI (if <20% down) $0

Loan Summary

Total of 360 payments $0
Total principal paid $0
Total interest paid $0

Rate Impact

-0.5% Rate
$0/mo
Save $0/mo
Current Rate
$0/mo
+0.5% Rate
$0/mo
Cost $0/mo

Payment Over Time

Interest
Principal
Year 1
95% Interest
Year 15
50/50
Year 30
95% Principal
* Estimates only. Actual payments may vary. Consult with a lender for accurate figures.

Property History

Property Timeline

🏠
Listed for Sale
Apr 13, 2026
$849,000
Original listing
Agent: The Moving Greater Boston Team Office: Berkshire Hathaway HomeServices Warren Residential

Price & Status History

Date Event Price Change
Apr 13, 2026 New Listing Added $849,000

Market Statistics

Days on Market
21 days
Price per Sq Ft
$832

Tax History

Year Taxes Assessment
2025 $4,245 $793,400

Financial Details

Annual Property Tax
$4,245
Tax Year 2025
HOA Fee
$250
Monthly
Assessed Value
$793,400

Listing Information

Listing Agent The Moving Greater Boston Team
Listing Office Berkshire Hathaway HomeServices Warren Residential
Agent MLS ID TM333652
Office MLS ID AN2213
Listing Data Updated Apr 21, 2026 12:05 PM EDT
Listing information is deemed reliable but not guaranteed. Data provided by MLS Property Information Network, Inc. All information should be independently verified.

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