298 Onset Ave Wareham — Photo 1 of 16
$359,000
Investment Analysis — 298 Onset Ave
Wareham, MA 02558
Based on HUD Small Area Fair Market Rent for Boston-Cambridge-Quincy, MA-NH HUD Metro FMR Area, a 3-bedroom in 02558 carries an estimated $3,080/mo in gross rent — about a 7.12% cap rate and $25,569/yr in estimated NOI at the $359,000 list price. Adjust every assumption in the calculator below.
Beds
3
Baths
1
SqFt
867
Style
Single Family
Built
1930
Charming 3 bedroom, 1 bath home with nice back yard and shed. New roof in 2025. Freshly painted and new flooring throughout. Heated front porch area. 1st floor offers primary bedroom, full bath and laundry. Second floor offers two more bedrooms. Basement with exterior access offers additional storage. All appliances to stay. Off street parking. Short stroll to Onset Beach and Village. First Open House Sunday 1-3pm
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: 434 sq ft (the lesser of 900 sq ft or half the 867 sq ft principal dwelling). Lot size: 5,000 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 MLS and other third-party data may be inaccurate or out of date.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.
Open Houses
Property Details
Financials
Parking
Interior Specifications
Climate & Utilities
Building & Exterior
Property & Lot
Amenities & Appliances
Gas Water Heater • Range • Microwave • Refrigerator • Washer • Dryer
Geography
Floorplan Breakdown
Structural Layout
Living Room
Lvl FirstFlooring - Stone/Ceramic Tile
Kitchen
Lvl FirstFlooring - Stone/Ceramic Tile, Exterior Access
Master Bedroom
Lvl FirstFlooring - Wall to Wall Carpet
Bedroom 2
Lvl SecondBedroom 3
Lvl SecondFlooring - Wall to Wall Carpet
Bathroom 1
Lvl FirstBathroom - Full, Bathroom - Tiled With Tub & Shower, Flooring - Laminate
Property History
$359,000
Sep 10, 2026
MLS® 73575053
$250,000
Dec 14, 2025
MLS® 73391133
$250,000
Jun 14, 2025
MLS® 73391133
Listing Agent: Sue Ann Murley
Listing Office: Divito Realty
MLS® Number: 73575053
