
309 Beacon St, Somerville — Photo 1 of 14
Recent Drop: $80,000
$1,595,000
Investment Analysis — 309 Beacon St,
Somerville, MA 02143 — Porter Sq.
Based on HUD Small Area Fair Market Rent for Boston-Cambridge-Quincy, MA-NH HUD Metro FMR Area, a 7-bedroom in 02143 carries an estimated $4,590/mo in gross rent — about a 1.50% cap rate and $23,881/yr in estimated NOI at the $1,595,000 list price. Adjust every assumption in the calculator below.
Beds
7
Baths
3.5
SqFt
3,200
Style
Single Family
Built
1994
Unbeatable location meets incredible versatility at 309 Beacon Street, a massive 7-bedroom, 3.5-bathroom residence perfectly situated on the Cambridge/Somerville line. Delivering immediate high-income potential, the sun-filled, multi-level interior features a modern eat-in kitchen with granite countertops and stainless steel appliances, classic hardwood floors, central heat and A/C, and relaxing jacuzzi tubs. Exceptional outdoor and logistical perks truly set this property apart, including a deck ideal for entertaining and rare off-street parking accommodating up to four vehicles. Boasting a stellar 96 Walk Score, the home is just steps from Porter Station, Harvard University, and the vibrant dining and shopping scenes driving local demand. Whether you are looking for a premier, turnkey rental asset with a perennial tenant pool or a smart multi-family conversion project (subject to approval), this highly flexible property promises exceptional value.
ADU Potential
Massachusetts allows one accessory dwelling unit by right in single-family zoning districts statewide (M.G.L. c. 40A §3; 760 CMR 71.00, effective Feb 2025). Estimated maximum ADU size for this property: 900 sq ft (the lesser of 900 sq ft or half the 3,200 sq ft principal dwelling). Lot size: 4,138 sq ft.
Based on listing data, which indicates the property type — not the zoning district. Local dimensional, septic (Title 5), and historic-district requirements still apply. Not legal advice — verify with the municipality.
Estimates — not financial advice
These figures are illustrative estimates for informational purposes only — not an appraisal, valuation, or guarantee of rent, income, or returns, and not financial, tax, or investment advice. Rent is either the figure reported on the MLS listing — in-place rent that may differ from market and is not verified against the actual leases — or, where the listing reports none, an estimate from HUD Small Area Fair Market Rents, a government benchmark that may differ from actual market rent. Each figure is labelled with its source. Cap rate, NOI, and returns depend on the assumptions shown, which you can change. MLS and other third-party data may be inaccurate or out of date. Verify all figures independently and consult your own financial, tax, and legal advisors before making any investment decision.
Immersive Experience
Property Details
Financials
Parking
Interior Specifications
Climate & Utilities
Building & Exterior
Property & Lot
Amenities & Appliances
Range • Dishwasher • Disposal • Refrigerator • Washer • Dryer
Neighborhood
Public Transportation • Shopping • Tennis Court(s) • Walk/Jog Trails • Medical Facility • Laundromat
Geography
Floorplan Breakdown
Structural Layout
Living Room
Lvl First22 x 13
Flooring - Hardwood
Dining Room
Lvl First17 x 13
Flooring - Hardwood
Kitchen
Lvl First16 x 12
Flooring - Hardwood
Family Room
Lvl First16.5 x 12
Flooring - Hardwood
Primary Bedroom
Lvl Second15 x 10
Flooring - Hardwood
Bedroom 2
Lvl Second14 x 14
Bedroom 3
Lvl Second21 x 13
Flooring - Hardwood
Bedroom 4
Lvl Second11 x 13
Flooring - Hardwood
Bedroom 5
Lvl Second10 x 13
Flooring - Hardwood
Bathroom 1
Lvl FirstBathroom 2
Lvl SecondBathroom 3
Lvl SecondProperty History
$1,595,000
Was $1,675,000
Aug 3, 2026
MLS® 73533857
$1,675,000
Jun 10, 2026
MLS® 73533857
$1,795,000
Apr 19, 2026
MLS® 73484880
$1,795,000
Mar 10, 2026
MLS® 73484880
$1,975,000
Oct 31, 2025
MLS® 73395742
$1,975,000
Jun 24, 2025
MLS® 73395742
Listing Agent: Sugandha Singh
Listing Office: Stuart St James, Inc.
MLS® Number: 73533857