Exceptional investment or owner-occupant opportunity! This well-maintained, long-term owner-occupied three-family home features three spacious units, each offering 5 rooms, 3 bedrooms, and 1 full bath. Every unit includes both front and rear decks, providing inviting outdoor living space, along with access to laundry and private storage in the full basement. The driveway offers valuable off-street parking, while the generously sized backyard provides additional outdoor space to enjoy. Ideally located just 0.6 miles from the Shawmut MBTA Red Line, this property provides convenient access to Route 93, downtown Boston, Quincy Center, and East Milton Square, making commuting a breeze. With strong rental appeal and a prime location, this is a rare opportunity to own a versatile multi-family property in one of Dorchester's most convenient neighborhoods.
| Units | 3 |
| Living area | 3,426 sqft |
| Lot size | 3,120 sqft |
| Year built | 1905 |
| Price / sqft | $409 |
| County | Suffolk |
| MLS # | 73543627 |
| Days on market | 30 days |
| Listed on | July 1, 2026 |
| Annual property tax | $10,545 |
| Tax year | 2025 |
| Assessed value | $910,600 |
| Zoning | R3 |
| Total actual rent | $0/mo |
| Stories | 3 |
| Total rooms | 15 |
| Lot size | 0.07 acres |
| Garage spaces | 0 |
| Parking spaces | 1 |
| Parking | Paved Drive, Off Street |
| Basement | Full, Unfinished |
| Foundation | Other |
| Flooring | Wood, Tile |
| Sewer | Public Sewer |
| Water | Public |
| Appliances | Range, Refrigerator |
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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 3,426 sqft of living area, built in 1905.
21 Saint Marks Rd, Boston MA 02124 has been listed for 30 days (since July 1, 2026).
At a list price of $1,400,000 across 3 units, that works out to roughly $466,667 per unit.
Annual property taxes are $10,545 (2025), on an assessed value of $910,600.
At $1,400,000 for 3,426 sqft, that's about $409 per square foot.
1 total parking space (paved drive, off street).
21 Saint Marks Rd, Boston MA 02124 is in Boston, Suffolk County, MA 02124.

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.