
390 Marsh St Belmont — Photo 1 of 42
$1,779,000
Investment Analysis — 390 Marsh St
Belmont, MA 02478 — Belmont Hill
Based on HUD Small Area Fair Market Rent for Boston-Cambridge-Quincy, MA-NH HUD Metro FMR Area, a 5-bedroom in 02478 carries an estimated $4,420/mo in gross rent — about a 1.31% cap rate and $23,229/yr in estimated NOI at the $1,779,000 list price. Adjust every assumption in the calculator below.
Beds
5
Baths
2.5
SqFt
2,458
Style
Single Family
Built
1940
Welcome to this classic Belmont Colonial, ideally located on coveted Marsh Street and lovingly maintained by its longtime owner. Offering over 2,450 square feet of living space, this 5-bedroom, 2.5-bath home features a formal living room with a fireplace, dining room, bright all-season sunroom, and an expansive primary suite with a walk-in closet. A spacious laundry area includes direct garage access and a secondary staircase leading to the two upstairs bedrooms and full bath offering a secluded suite for family members. Set on a beautifully landscaped 0.30-acre lot, the spacious backyard and refinished deck provide the perfect setting for outdoor entertaining. Conveniently located near Belmont Hill School and Belmont Country Club, with easy access to Route 2, Cambridge, Boston, shopping, dining, and professional services. Come visit this rare opportunity to own a well-cared-for home in one of Belmont's most desirable neighborhoods!
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 2,458 sq ft principal dwelling). Lot size: 12,961 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.
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Property Details
Financials
Parking
Interior Specifications
Climate & Utilities
Building & Exterior
Property & Lot
Amenities & Appliances
Gas Water Heater • Range • Dishwasher • Disposal • Microwave • Refrigerator • Washer • Dryer
Neighborhood
Shopping • Walk/Jog Trails • Conservation Area • Highway Access • Private School
Geography
Floorplan Breakdown
Structural Layout
Living Room
Lvl First12 x 24
Flooring - Hardwood
Dining Room
Lvl Main,First12 x 13
Flooring - Hardwood
Kitchen
Lvl Main,First12 x 11
Flooring - Hardwood, Pantry, Exterior Access, Recessed Lighting, Gas Stove
Master Bedroom
Lvl Second12 x 24
Walk-In Closet(s), Flooring - Hardwood
Bedroom 2
Lvl Second12 x 10
Bedroom 3
Lvl Second12 x 11
Closet, Flooring - Hardwood
Bedroom 4
Lvl Second16 x 11
Closet, Flooring - Hardwood
Bedroom 5
Lvl Second16 x 8
Closet, Flooring - Hardwood
Bathroom 1
Lvl First4 x 5
Bathroom - Half
Bathroom 2
Lvl Second8 x 5
Bathroom - Full, Bathroom - Tiled With Tub & Shower
Bathroom 3
Lvl Second5 x 8
Bathroom - Full, Bathroom - Tiled With Shower Stall
Property History
$1,779,000
Sep 10, 2026
MLS® 73575071
$1,850,000
Aug 20, 2026
MLS® 73534926
$1,850,000
Jun 11, 2026
MLS® 73534926
Listing Agent: Nancy Grignon
Listing Office: Berkshire Hathaway HomeServices Commonwealth Real Estate
MLS® Number: 73575071