Rich in historic character and offering an impressive approx. 3,360 square feet across four levels, this classic 1880 Charlestown brownstone delivers exceptional scale and versatility. The main and upper levels function as an expansive single-family home, with elegant living and dining rooms, an updated kitchen, soaring ceilings, intricate millwork, hardwood floors, oversized windows and four fireplaces. The expansive primary suite is a standout, complete with custom built ins, a fireplace and spacious en-suite bath with dual vanities, soaking tub and glass-enclosed shower. The top floor also offers the potential to be reconfigured into two bedrooms, adding an additional bedroom to the home. A private deck and patio extend the living space outdoors. Separate from the main residence, the garden level features a one-bedroom apartment with its own private entrance, offering excellent rental income potential or a guest suite. Located near the residence there is a deeded heated garage space available separately for purchase, and there are two additional parking spaces available to rent. Convenient to Main Street and all Charlestown has to offer, with easy access to Downtown Boston, the waterfront and major highways.
| Units | 2 |
| Living area | 3,360 sqft |
| Lot size | 1,946 sqft |
| Year built | 1880 |
| Price / sqft | $714 |
| County | Suffolk |
| MLS # | 73574728 |
| Days on market | 0 days |
| Listed on | September 9, 2026 |
| Annual property tax | $15,158 |
| Tax year | 2027 |
| Assessed value | $1,562,400 |
| Zoning | Res |
| Total actual rent | $0/mo |
| Stories | 4 |
| Total rooms | 12 |
| Lot size | 0.04 acres |
| Garage spaces | 1 |
| Parking spaces | 3 |
| Basement | Full, Finished, Walk-Out Access, Interior Entry |
| Foundation | Brick/Mortar |
| Roof | Rubber |
| Construction | Brick |
| Sewer | Public Sewer |
| Water | Public |
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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 2-unit multi-family property with 3,360 sqft of living area, built in 1880.
12 Auburn Street, Boston MA 02129 has been listed for 0 days (since September 9, 2026).
At a list price of $2,399,000 across 2 units, that works out to roughly $1,199,500 per unit.
Annual property taxes are $15,158 (2027), on an assessed value of $1,562,400.
At $2,399,000 for 3,360 sqft, that's about $714 per square foot.
1 garage space and 3 total parking spaces.
12 Auburn Street, Boston MA 02129 is in Boston, Suffolk County, MA 02129.

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.