
109 South Street Westborough — Photo 1 of 42
Recent Drop: $75,000
$900,000
Investment Analysis — 109 South Street
Westborough, MA 01581 — Downtown
Based on HUD Small Area Fair Market Rent for Worcester, MA HUD Metro FMR Area, a 4-bedroom in 01581 carries an estimated $3,960/mo in gross rent — about a 2.66% cap rate and $23,948/yr in estimated NOI at the $900,000 list price. Adjust every assumption in the calculator below.
Beds
4
Baths
2.5
SqFt
2,801
Style
Single Family
Built
1878
This remarkable farmhouse is one of the most recognizable homes in Westborough first for its beautiful wrap-around pillared porch viewable from both Denny Street and South Street entrances. Enter this nearly 1.5 acres from its circular driveway revealing the peace and tranquility of nature’s open fields. Ample space to add a gorgeous barn, 3 car garage, and/or ADU. Scenic Denny Street stoned marked entrance guides you to the edged gardens. Explore recently updated shaker style kitchen with leathered granite which opens to a sun-soaked flex room. The cozy family room centered by a wood burning stove. Quaint office with glassed doors to the open stunning sun-drenched dining and living rooms sharing the formal fireplace. The foyer leads to the original curved railing of the main staircase. Formally entertain or curl up by the fire or spend your days and nights taking in the serene landscapes & sound of your stream, you may have found what you’re looking for. Sidewalks direct to downtown.
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 2,801 sq ft principal dwelling). Lot size: 60,983 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
Electric Water Heater • Water Heater • Range • Dishwasher • Disposal • Refrigerator • Range Hood • Plumbed For Ice Maker
Neighborhood
Public Transportation • Shopping • Tennis Court(s) • Park • Walk/Jog Trails • Golf
Geography
Floorplan Breakdown
Structural Layout
Living Room
Lvl First15 x 11
Flooring - Hardwood
Dining Room
Lvl First18 x 11
Flooring - Hardwood, Window(s) - Bay/Bow/Box
Kitchen
Lvl First13 x 13
Flooring - Hardwood, Countertops - Stone/Granite/Solid, Countertops - Upgraded, Open Floorplan, Stainless Steel Appliances
Office
Lvl First10 x 10
Flooring - Hardwood
Family Room
Lvl First15 x 15
Wood / Coal / Pellet Stove, Flooring - Hardwood
Primary Bedroom
Lvl Second16 x 13
Closet, Flooring - Wood
Bedroom 2
Lvl Second16 x 15
Bedroom 3
Lvl Second12 x 11
Bedroom 4
Lvl Second10 x 10
Bathroom 1
Lvl FirstBathroom - Half
Bathroom 2
Lvl SecondBathroom - Full
Bathroom 3
Lvl SecondBathroom - Full
Property History
$900,000
Was $925,000
Jul 14, 2026
MLS® 73498731
$925,000
Was $975,000
Jun 4, 2026
MLS® 73498731
$975,000
Apr 8, 2026
MLS® 73498731
Listing Agent: Michael Mathieu
Listing Office: Mathieu Newton Sotheby's International Realty
MLS® Number: 73498731