12 bed!, three-bath, three-unit property conveniently located just outside the vibrant Union Square and minutes from Assembly Row. Each unit offers spacious layouts with large rooms, providing endless possibilities for both investors and owner-occupants alike. Some units can be delivered vacant, allowing flexibility for immediate occupancy or renovation. The property features off-street parking, a yard, and additional storage space in the back that could be converted into garages, or use your imagination perfect for creative uses or added income potential. This is an excellent opportunity to own a large, versatile multi-family in a rapidly growing area with strong rental demand and easy access to shops, restaurants, public transportation, and major routes. Whether you’re looking to live in one unit and rent the others or fully invest for maximum returns, this property offers the flexibility, location, and size that are hard to find in today’s market. A true gem!
| Units | 3 |
| Living area | 4,707 sqft |
| Lot size | 4,095 sqft |
| Year built | 1900 |
| Price / sqft | $319 |
| County | Middlesex |
| MLS # | 73451051 |
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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 3-unit multi-family property with 4,707 sqft of living area, built in 1900.
At a list price of $1,499,999 across 3 units, that works out to roughly $500,000 per unit.
At $1,499,999 for 4,707 sqft, that's about $319 per square foot.
18 Otis St, Somerville MA 02145 is in Somerville, Middlesex County, MA 02145.

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.