The multi-story building contains four (4) 2-Bedroom/1-Bathroom units, one (1) 1-Bedroom/1-Bathroom unit, and three (3) Two-Room Studio units with 5,210 square feet of gross living area in 8,423 square feet of gross area. The Property is situated upon a 0.14-acre parcel. 15 Walnut Street is centrally located in Somerville’s dynamic Union Square neighborhood. The property has been meticulously maintained under current ownership with capital improvements throughout including complete renovations to units 15 Walnut #3 and Sanborn 1R, 2L and 3L. All units feature separate utilities with tenants responsible for their own heat, hot water and electricity. Six (6) of the units have gas fired, forced hot water baseboard and/or radiator heat. 15 Walnut #3 features HVAC (gas) and Sanborn 3 features electric for heating and cooling. Additional building amenities include a coin-op laundry room in the basement.
| Units | 8 |
| Living area | 5,210 sqft |
| Lot size | 6,300 sqft |
| Year built | 1906 |
| Price / sqft | $530 |
| County | Middlesex |
| MLS # | 73493634 |
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Listing courtesy of a MLS PIN member office. Listing data © MLS PIN.
Auto-generated from the listing data — richer AI answers coming with the live site.
It is a 8-unit multi-family property with 5,210 sqft of living area, built in 1906.
At a list price of $2,850,000 across 8 units, that works out to roughly $356,250 per unit.
At $2,850,000 for 5,210 sqft, that's about $530 per square foot.
15 Walnut St, Somerville MA 02143 is in Somerville, Middlesex County, MA 02143.

Justin Rollo is a Broker Associate with Signal Real Estate (MA Lic. #9534264) and a lifelong Massachusetts resident. Over 14 years and hundreds of transactions, he has worked investment properties — multi-families and house-hacking — across Greater Boston full-time. Away from real estate, Justin is a proud dad, youth coach and local school-committee member — and a former professional poker player who still loves golf and following local sports.