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INVESTMENT SNAPSHOT
About this property
Appraisal in hand at $1.23M. Listed at $999,000. That gap is your equity before you lift a finger.9 Helen St is a 3,970 sq ft three family in Dorchester with nine bedrooms across three full units. Market rent is $3,200 per unit. New Navien tankless systems, one per unit. New roof. All three floors hardwired. High ceilings, oversized closets, long hallways, hardwood floors, full basement with two means of egress. Franklin Field across the street. Condo conversion potential is real. Do the math.
Property details
| Units | 3 |
| Living area | 3,970 sqft |
| Lot size | 3,770 sqft |
| Year built | 1900 |
| Price / sqft | $252 |
| County | Suffolk |
| MLS # | 73505090 |
Listing status
| Days on market | 43 days |
| Listed on | April 21, 2026 |
Taxes & financials
| Annual property tax | $8,384 |
| Tax year | 2025 |
| Assessed value | $724,000 |
| Zoning | R3 |
| Total actual rent | $0/mo |
Building & lot
| Stories | 3 |
| Total rooms | 15 |
| Lot size | 0.09 acres |
| Garage spaces | 0 |
| Parking spaces | 0 |
| Parking | On Street |
| Basement | Unfinished |
| Foundation | Stone |
Utilities & systems
| Sewer | Public Sewer |
| Water | Public |
Location
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Listing courtesy of Thumbprint Realty, LLC — Tayla Andre. Listing data © MLS PIN.
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Questions & answers
Auto-generated from the listing data — richer AI answers coming with the live site.
How many units does 9 Helen St, Boston MA 02124 have?
It is a 3-unit multi-family property with 3,970 sqft of living area, built in 1900.
How long has 9 Helen St, Boston MA 02124 been on the market?
9 Helen St, Boston MA 02124 has been listed for 43 days (since April 21, 2026).
What is the estimated cap rate on this 3-family in Boston?
Based on area median rents, the estimated cap rate is about 7.7%, with a Signal Score of 99/100. These are directional estimates, not an appraisal.
What is the price per unit?
At a list price of $999,999 across 3 units, that works out to roughly $333,333 per unit.
What are the property taxes on 9 Helen St, Boston MA 02124?
Annual property taxes are $8,384 (2025), on an assessed value of $724,000.
What is the price per square foot?
At $999,999 for 3,970 sqft, that's about $252 per square foot.
Where is this property located?
9 Helen St, Boston MA 02124 is in Boston, Suffolk County, MA 02124.
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