Offered for the first time in more than 80 years, this classic circa-1857 Mansard-style three-family, with more than 3,800 sf of living space, presents a value-add opportunity for owner-occupants, investors, developers, and alike. Ready for its next chapter, the property offers the opportunity to restore to its original architectural charm or explore a range of possibilities, including condominium conversion and building expansion. The generous 12,550-square-foot lot with six off-street parking spaces further enhances the property's significant upside development appeal and long-term investment potential. Ideally located just a few blocks from vibrant Watertown Square, offering easy access to restaurants, cafés, the public library, banks, pharmacies, and everyday amenities. Roughly one mile from Exit 127 off the Massachusetts Turnpike at Newton Corner, the location provides excellent commuter access to Cambridge, Downtown Boston and Logan International Airport.
| Units | 3 |
| Living area | 3,822 sqft |
| Lot size | 12,550 sqft |
| Year built | 1857 |
| Price / sqft | $365 |
| County | Middlesex |
| MLS # | 73585274 |
| Days on market | 0 days |
| Listed on | October 1, 2026 |
| Annual property tax | $14,884 |
| Tax year | 2026 |
| Assessed value | $1,220,800 |
| Zoning | T |
| Total actual rent | $0/mo |
| Stories | 3 |
| Total rooms | 14 |
| Lot size | 0.29 acres |
| Garage spaces | 0 |
| Parking spaces | 6 |
| Parking | Off Street |
| Basement | Full, Partially Finished |
| Foundation | Stone, Granite |
| Roof | Shingle |
| Construction | Frame |
| Flooring | Wood |
| Heating | Hot Water, Oil |
| Sewer | Public Sewer |
| Water | Public |
| Utilities | for Gas Range |
| Appliances | Range, Dishwasher, 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 3,822 sqft of living area, built in 1857.
128 Summer St, Watertown MA 02472 has been listed for 0 days (since October 1, 2026).
At a list price of $1,395,000 across 3 units, that works out to roughly $465,000 per unit.
Annual property taxes are $14,884 (2026), on an assessed value of $1,220,800.
At $1,395,000 for 3,822 sqft, that's about $365 per square foot.
6 total parking spaces (off street).
128 Summer St, Watertown MA 02472 is in Watertown, Middlesex County, MA 02472.

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.