RARE FIND! Large, well-cared-for 3-family near the Arnold Arboretum with owner-occupant, house-hack, investor, or buy-and-hold flexibility. One apartment is expected to be available for occupancy or re-leasing, creating immediate optionality. Set on a large, sun-facing lot with an oversized private backyard, off-street parking, and outdoor space to relax. Professionally managed and cared for by the same family for many years, with strong rental history and consistent resident appeal. Units offer similar floor plans, large rooms, hardwood floors, separate heat/electric, a newer rubber roof, and a high-ceiling basement. Convenient to Forest Hills, Roslindale Village, the Arnold Arboretum, Longwood, universities, Downtown Boston, and transit. Rent roll, expense summary, utility responsibility, and systems information available upon request.
| Units | 3 |
| Living area | 3,234 sqft |
| Lot size | 3,400 sqft |
| Year built | 1905 |
| Price / sqft | $386 |
| County | Suffolk |
| MLS # | 73511267 |
| Days on market | 56 days |
| Listed on | May 1, 2026 |
| Annual property tax | $10,734 |
| Tax year | 2025 |
| Assessed value | $926,900 |
| Zoning | R3 |
| Gross income (actual) | $108,000/yr |
| Net operating income (actual) | $108,000/yr |
| Total actual rent | $9,000/mo |
| Stories | 3 |
| Total rooms | 15 |
| Lot size | 0.08 acres |
| Garage spaces | 0 |
| Parking spaces | 0 |
| Foundation | Concrete Perimeter |
| Heating | Hot Water |
| Sewer | Public Sewer |
| Water | Public |
| Appliances | Washer, Dryer |
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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 3,234 sqft of living area, built in 1905.
3985 Washington St, Boston MA 02131 has been listed for 56 days (since May 1, 2026).
Based on area median rents, the estimated cap rate is about 6.0%, with a Signal Score of 93/100. These are directional estimates, not an appraisal.
At a list price of $1,249,000 across 3 units, that works out to roughly $416,333 per unit.
Annual property taxes are $10,734 (2025), on an assessed value of $926,900.
At $1,249,000 for 3,234 sqft, that's about $386 per square foot.
3985 Washington St, Boston MA 02131 is in Boston, Suffolk County, MA 02131.

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.