21 Allen Street, Somerville, MA


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Square feet



About 21 Allen Street

The Ropewalk is a 69-unit multi-family development in the heart of Union Square, adjacent to the newly opened MBTA Station. The arrival of the Green Line Transit Station has precipitated a rapid transformation of the Square. The Square's $2 billion, 3.8 million SF master-planned development, coined USQ spans 20 acres and includes 2.4M SF of lab and innovation space,150,000 SF of retail and restaurant space, and 4.7 acres of vibrant open spaces. Phase I was delivered by Magellan Development in Q3 2023 with future phases set to break ground in 2024. Boynton Yards and Somerville Gateway which border Union Square to the east and south are complimentary master-planned developments adding a combined 4.1 million SF state-of-the-art life sciences/biotech, hotel, and retail spaces to the broader neighborhood. The project is in a qualified OZ and has been permitted as a Passive House project; set to achieve the highest level of sustainability. Approvals allow for either apartments or condos.

Features of 21 Allen Street

MLS® # 73211289
Price $8,790,000
Bedrooms 76
Bathrooms 88.00
Full Baths 85
Half Baths 6
Square Footage 47,572
Acres 0.41
Year Built 2025
Type Residential Income
Sub-Type 5+ Family - 5+ Units Up/Down
Status Active

Community Information

Address 21 Allen Street
City Somerville
County Middlesex
State MA
Zip Code 02143


Is Waterfront No
Has Pool No


Fireplace No
# of Stories 12


Lot Description Cleared, Level
Windows Insulated Windows
Foundation Concrete Perimeter

Additional Information

Zoning UR

Listing Details

Agent Ryan Taylor
Office Fortune RE
Buyer Agent Compensation 1.5
Compensation Based On Gross/Full Sale Price
Sub Agency Relationship Offered No

Listing Map

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