Historic brownstone in Dorchester featuring 4 bedrooms and 3.5 baths across three levels, PLUS a legal 1-bedroom, 1-bath garden-level apartment with a reliable long-term tenant paying $2,377/month (direct deposit). A tasteful blend of old-world charm and modern amenities, with all the comforts of a recently renovated home. Main unit: Beautifully refinished hardwood floors, marble tile, custom built-ins, five 18th-century marble fireplaces, and custom stained-glass transoms and high-end design add character throughout. The open-concept living, dining, and kitchen areas make entertaining a breeze. The chef's kitchen features stainless steel appliances, quartz countertops, a gas range, wine fridge/bar, abundant storage, and an adjacent newly added first-floor half bath. The second floor offers two spacious bedrooms and a beautifully renovated bathroom with a tub and rain shower. The third-floor primary suite boasts three built-in dressers, two walk-in closets, and a luxurious private bath. The fourth bedroom includes a new washer and dryer and an updated full bath. Enjoy a huge, partially covered deck overlooking a private, low-maintenance turf yard with landscaping and a new wood privacy fence. Garden Unit: Fully updated one bed, one bath apartment with ductless AC and private front and back entrances. Both Units: Extensive renovations in 2025 included updated systems, central air, a new boiler, updated electrical, tankless hot water heaters, and more! Just four blocks from the Upham's Corner T station (10 minutes to South Station) + available parking. Nothing left to do but move in! Note: Maps and Street View haven’t caught up with the beautiful improvements to the block. Come see the transformation in and around 20 W Cottage for yourself!
| Units | 2 |
| Living area | 3,132 sqft |
| Lot size | 1,965 sqft |
| Year built | 1900 |
| Price / sqft | $415 |
| County | Suffolk |
| MLS # | 73596683 |
| Days on market | 0 days |
| Listed on | October 29, 2026 |
| Annual property tax | $11,104 |
| Tax year | 2025 |
| Assessed value | $958,874 |
| Zoning | 104 |
| Gross income (actual) | $90,924/yr |
| Net operating income (actual) | $79,820/yr |
| Total actual rent | $7,577/mo |
| Stories | 4 |
| Total rooms | 15 |
| Lot size | 0.05 acres |
| Garage spaces | 0 |
| Parking spaces | 2 |
| Parking | Off Street, Leased, Guest, Other |
| Basement | Full, Finished, Walk-Out Access |
| Foundation | Slab |
| Sewer | Public Sewer |
| Water | Public |
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Listing courtesy of a MLS PIN member office. Listing data © MLS PIN.
Answered from the listing data and public map data.
It is a 2-unit multi-family property with 3,132 sqft of living area, built in 1900.
20 W Cottage St, Boston MA 02125 has been listed for 0 days (since October 29, 2026).
At a list price of $1,299,000 across 2 units, that works out to roughly $649,500 per unit.
Annual property taxes are $11,104 (2025), on an assessed value of $958,874.
At $1,299,000 for 3,132 sqft, that's about $415 per square foot.
2 total parking spaces (off street, leased, guest, other).
20 W Cottage St, Boston MA 02125 is in Boston, Suffolk County, MA 02125.

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.