108 Langdon Ave Watertown — Photo 1 of 22
Recent Drop: $25,000
$1,050,000
Investment Analysis — 108 Langdon Ave
Watertown, MA 02472
Based on HUD Small Area Fair Market Rent for Boston-Cambridge-Quincy, MA-NH HUD Metro FMR Area, a 4-bedroom in 02472 carries an estimated $4,250/mo in gross rent — about a 2.63% cap rate and $27,638/yr in estimated NOI at the $1,050,000 list price. Adjust every assumption in the calculator below.
Beds
4
Baths
1.5
SqFt
1,731
Style
Single Family
Built
1915
Welcome to this well-maintained Colonial offering 9 rooms, 4 bedrooms, and 1.5 baths in the heart of vibrant east Watertown. Filled w/ character and charm, this home features beautiful original details including stained-glass windows, a welcoming farmer’s porch, high ceilings, pocket door, and hardwood floors. The 1st floor offers an ideal layout w/ a spacious living room, and an open kitchen and dining area with peninsula. A bonus den or office is also on the 1st floor as well as the 1/2 bath. Upstairs are 4 generously sized corner bedrooms w/ hardwood and a full bath. A bonus room (5th bedroom or home office) is on the 3rd floor. Enjoy exceptional outdoor living w/ a relaxing front porch, rear deck, and beautifully landscaped yard w/ mature plantings and colorful gardens. Ample storage is available in the walk-out basement and in the attic. Conveniently located near public transportation, restaurants, Hosmer Elementary School, Arsenal Yards, Coolidge Square, Cambridge, and Boston.
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: 866 sq ft (the lesser of 900 sq ft or half the 1,731 sq ft principal dwelling). Lot size: 4,500 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 • Refrigerator • Washer • Dryer
Neighborhood
Public Transportation • Shopping • Park • Walk/Jog Trails • Golf • Medical Facility
Geography
Floorplan Breakdown
Structural Layout
Living Room
Lvl First14 x 16
Flooring - Hardwood
Dining Room
Lvl First9 x 12
Flooring - Laminate, Deck - Exterior, Open Floorplan
Kitchen
Lvl First8 x 11
Deck - Exterior, Open Floorplan, Peninsula
Office
Lvl Third11 x 12
Closet, Flooring - Wood
Family Room
Lvl First10 x 14
Closet/Cabinets - Custom Built, Flooring - Wall to Wall Carpet
Primary Bedroom
Lvl Second12 x 14
Closet, Flooring - Hardwood
Bedroom 2
Lvl Second9 x 10
Bedroom 3
Lvl Second8 x 11
Closet, Flooring - Hardwood
Bedroom 4
Lvl Second9 x 9
Closet
Bathroom 1
Lvl First3 x 5
Bathroom - Half
Bathroom 2
Lvl Second5 x 6
Bathroom - Full, Bathroom - With Tub & Shower
Property History
$1,050,000
Was $1,075,000
Sep 8, 2026
MLS® 73532861
$1,075,000
Jun 9, 2026
MLS® 73532861
Listing Agent: Bob Airasian
Listing Office: Coldwell Banker Realty - Belmont
MLS® Number: 73532861
