Investors Take Note! 140 Mary Street North is a 13 year old, legal purpose-built triplex. Over $70k income potential! A property like this is a very rare find! Situated in the desirable O'Neill area of Oshawa close to schools, parks, transit, Costco, Lakeridge Health Oshawa, and walking distance to downtown. All three units are very bright and spacious with two large bedrooms, a full bathroom, open concept kitchen with centre island, and separate living and dining rooms. Each unit has its own private laundry, individual furnace, central air (Units 2 & 3), and owned hot water tank. The units are almost identical in layout. There is an abundance of cupboard and counter space in the kitchens, plus a pantry. All units have plenty of storage with a front hall closet plus large bedroom closets. Unit 1 (lower level) is home to the water room and master electric on/off switches. Three gas and three hydro meters - Landlord only pays the water! Each unit has its own electrical panel inside the unit for easy access when necessary. Unit 2 new central air 2019, Unit 3 new air conditioner June 2025, Unit 3 new furnace 2023 . This property is ideal for an investor but could also work for someone looking to live in one unit and rent the others. Two units tenanted - place your own tenants in remaining unit or or move in yourself! All three units in this legal triplex present beautifully and have the same open, highly functional layout - come see for yourself!
Listing provided by ROYAL LEPAGE TERREQUITY REALTY
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Data last updated: May 30, 2026 at 03:47 p.m.
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140 Mary Street N
Closest publicly funded schools within 5 km, ranked by EQAO standardized test scores
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Top 50% of Ontario elementary schools
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EQAO score is the average of available reading, writing & math results, 0–100 · Source: Ontario Ministry of Education
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R = Reading · W = Writing · M = Math · arrows show 3-year change
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