239-243 Columbia Street is a three-story multifamily investment property located in the Port neighborhood of Cambridge. The building is fully occupied and includes nine (2) 2BR units with eat-in kitchens, and living rooms. The six (6) upper floor apartments include a 3rd room (office or small bedroom). Excellent opportunity to acquire a very well-located asset with existing cash flow and future value add potential. PLEASE SEE FIRM REMARKS FOR ADDITIONAL INFO
| Units | 9 |
| Living area | 8,460 sqft |
| Lot size | 4,112 sqft |
| Year built | 1900 |
| Price / sqft | $520 |
| County | Middlesex |
| MLS # | 73555226 |
| Days on market | 4 days |
| Listed on | July 27, 2026 |
| Annual property tax | $20,613 |
| Tax year | 2025 |
| Assessed value | $3,246,200 |
| Zoning | C-1 |
| Gross income (actual) | $324,000/yr |
| Net operating income (actual) | $243,111/yr |
| Total actual rent | $26,650/mo |
| Electric expense | $1,799/yr |
| Insurance expense | $14,943/yr |
| Stories | 3 |
| Total rooms | 33 |
| Lot size | 0.09 acres |
| Garage spaces | 0 |
| Parking spaces | 0 |
| Basement | Full, Partially Finished |
| Foundation | Concrete Perimeter |
| Sewer | Public Sewer |
| Water | Public |
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Listing courtesy of a MLS PIN member office. Listing data © MLS PIN.
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It is a 9-unit multi-family property with 8,460 sqft of living area, built in 1900.
243 Columbia, Cambridge MA 02139 has been listed for 4 days (since July 27, 2026).
At a list price of $4,395,000 across 9 units, that works out to roughly $488,333 per unit.
Annual property taxes are $20,613 (2025), on an assessed value of $3,246,200.
At $4,395,000 for 8,460 sqft, that's about $520 per square foot.
243 Columbia, Cambridge MA 02139 is in Cambridge, Middlesex County, MA 02139.

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.