342 Mary Street N, Oshawa, ON L1G 5C8
O'Neill, Oshawa · Near Mary St N & Rosedale Ave · View map
About this home
Attention contractors, builders, and savvy investors! This detached two-storey home offers over 3,000 sq. ft. of space and endless potential for those looking to renovate, reimagine, or explore future development possibilities. Situated on a great-sized lot in the established community of O'Neil, this property is zoned R5-A, with potential for a fourplex development, subject to buyer due diligence and all applicable municipal approvals. Conveniently located close to schools, community centres, everyday amenities, and more, this is an exciting opportunity to unlock the full potential of a property in a desirable Oshawa location. Property is being sold AS IS, WHERE IS. Bring your vision, creativity, and plans to make the most of this unique opportunity!
The home
- Type
- 1½-storey detached home
- Style
- 1 1/2 Storey
- Square footage
- 3000-3500 sq ft
- Bedrooms
- 2
- Bathrooms
- 2
- Kitchens
- 1
- Rooms
- 6
- Basement
- Unfinished
- Lot size
- 52.1 x 142.3 ft
- Faces
- West
Ownership & fees
- Ownership
- Freehold
- Monthly condo fee
- None
- Exterior
- Brick Front
Heating & cooling
- Heating fuel
- Gas
- Heating type
- Forced Air
- Air conditioning
- Central Air
- Fireplace
- No
Garage & parking
- Garage
- Attached
- Garage spaces
- 1
- Driveway spaces
- 4
- Total parking
- 5
- Parking features
- Private
Taxes & other
- Property taxes
- $6,585/yr
- Tax year
- 2026
- Occupancy
- Vacant
- Possession
- Flexible
- Cross street
- Mary St N & Rosedale Ave
- Neighbourhood
- O'Neill
More
- Price per sq ft
- ~$138 (at 3,250 sq ft)
- MLS® number
- E14107444
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No features listed yet.
- Mortgage
- Property tax
- Maintenance fee
Cash needed to close
Estimates only, using Canadian semi-annual compounding, Ontario land transfer tax. Mortgage default insurance is added when you put down less than 20%. Your lender and lawyer will confirm exact numbers.
342 Mary Street, Oshawa, ON L1G 5C8
O'Neill, Oshawa · Near Mary St N & Rosedale Ave
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Listing history for 342 Mary Street
See what this home and others at the same address were listed for, what they sold for, and how long it took.
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Frequently asked questions about 342 Mary Street N
Answers come straight from this home’s MLS® listing.
How much is 342 Mary Street N listed for, and what would it cost each month?
342 Mary Street N is listed for $449,000. With 20% down ($89,800), the mortgage payment would be roughly $1,811 a month at 4.5% over 30 years. Add property tax and the estimate comes to about $2,360 a month, all in. That figure is an illustration, not a quote.
Is 342 Mary Street N freehold or a condo, and is there a monthly fee?
342 Mary Street N is a 1½-storey detached home in O'Neill, Oshawa. Ownership is freehold: you own the home and the lot. There is no monthly condo fee, so the roof, windows, driveway, snow and lawn are yours to look after.
How many bedrooms and bathrooms does 342 Mary Street N have?
342 Mary Street N has 2 bedrooms and 2 bathrooms. The listing gives the style as 1 1/2 storey.
Does 342 Mary Street N have a garage and parking?
Yes. The listing shows the garage as attached, with room for 1 car. The driveway adds 4 spaces. In total the listing counts 5 parking spaces.
Does 342 Mary Street N have a finished basement?
The listing describes the basement as unfinished.
What style of home is 342 Mary Street N?
342 Mary Street N is a 1½-storey detached home. A 1½-storey home has a full main floor and a partial second floor under the roofline, often with dormer windows.
How big is 342 Mary Street N, and what is the lot size?
The listing puts the home between 3,000 and 3,500 sq ft. The board reports a range rather than an exact figure, and it usually leaves out the basement. The lot is listed as 52.1 x 142.3 ft.
How is 342 Mary Street N heated and cooled?
Heating is forced air (gas). Cooling is central air.
What are the property taxes for 342 Mary Street N?
Property taxes are $6,585 a year (2026), or about $549 a month.
Where is 342 Mary Street N?
342 Mary Street N is in the O'Neill community of Oshawa. The nearest main intersection is Mary St N & Rosedale Ave. The postal code is L1G 5C8.
Is 342 Mary Street N still for sale?
Yes. It is an active listing (MLS® E14107444). Listings here update from the board through the day and come down once a home sells.
What are similar detached homes near 342 Mary Street N asking?
Similar detached homes for sale nearby right now include 266 Division Street at $425,000 (2+2 bed), 85 Hall Street at $450,000 (3 bed) and 354 Verdun Road at $459,900 (1+1 bed). These are asking prices, not sold prices. The Sold history tab shows what homes at this address went for.
What have homes at 342 Mary Street sold for?
Recent sales, leases and expired listings for this home and others at the same address are in the Sold history tab, with the price and date of each. It is free for members.
How do I book a showing at 342 Mary Street N?
Pick a day and time with Book a Tour on this page. Tours are free, with no obligation, in person or by video. You can also call or text 647-931-3923.
Have a different question? Ask about this home and get an answer, usually within the hour.
Similar detached homes nearby
More detached homes for sale near O'Neill, picked by style, size and price.
1½-storey detached home$425,000266 Division Street, Oshawa2+2 bed · 2 bath · O'NeillCourtesy of: Keller Williams Energy Real EstateView home →
1½-storey detached home$450,00085 Hall Street, Oshawa3 bed · 1 bath · CentralCourtesy of: ICI SOURCE REAL ASSET SERVICES INC.View home →
1½-storey detached home$459,900354 Verdun Road, Oshawa1+1 bed · 1 bath · CentralCourtesy of: WEISS REALTY LTD.View home →Courtesy of: Keller Williams Energy Real Estate
Listing information comes from the Toronto Regional Real Estate Board through PropTx and is deemed reliable but is not guaranteed accurate. It is provided for consumers' personal, non-commercial use. The trademarks MLS®, Multiple Listing Service® and the associated logos are owned by The Canadian Real Estate Association (CREA) and identify the quality of services provided by real estate professionals who are members of CREA.
*Estimated monthly cost assumes 20% down, a 4.5% rate and a 30-year amortization, plus property tax. For illustration only.