342 Mary Street N

O'Neill, Oshawa, Ontario L1G 5C8

Overview

At a glance

Days on market5 days
ListedOct 22, 2026
UpdatedOct 23, 2026
Size3000-3500 sq ft
Lot52.11 x 142.31 Feet
Property taxes$6,585 (2026)
Parking5 spaces
BasementUnfinished
MLS® numberE14107444
Data sourcePropTx MLS® System
Listing brokerageKeller Williams Energy Real Estate

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!

Details

Property

Style
1 1/2 Storey
Fronting on
West
Cross street
Mary St N & Rosedale Ave
Community
O'Neill
Municipality
Oshawa

Inside

Bedrooms above grade
2
Bathrooms
2
Kitchens
1
Basement
Unfinished
Family room
No
Fireplace
No
Interior features
Other

Utilities

Heating
Forced Air
Heating fuel
Gas
Cooling
Central Air
Sewer
Sewer

Building

Construction
Brick Front
Foundation
Concrete
Roof
Shingles
Pool
None

Parking

Garage
Attached
Parking spaces
4
Total parking
5
Driveway
Private

Land

Frontage
52.11
Depth
142.31
Lot size units
Feet
Waterfront
No
Rooms (5)
RoomLevelSizeFeatures
KitchenMain5.51 x 2.89 MetersWindow, Open Concept
Living RoomMain3.97 x 3.88 MetersWindow, Open Concept
Dining RoomMain3.69 x 3.48 MetersWindow, Open Concept
Primary BedroomUpper4.86 x 3.23 MetersHis and Hers Closets, Window, Broadloom
Bedroom 2Upper3.19 x 2.52 MetersWindow, Closet, Broadloom
Value

What it’s worth

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Market read

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Whether O'Neill is a buyer’s or seller’s market right now, and how long homes like this usually take to sell.

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History

Listing history

Past listings and sales

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Compare

How it compares

Sold comparables

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Neighbourhood

Around O'Neill

What’s nearby

On a busier streetBackyard faces west

  • Elementary schoolMary Street Community Schoolabout 10 min walk
  • High schoolO'Neill Collegiate and Vocational Instituteabout 2 min walk
  • ParkParkwood Estateabout 3 min walk
  • Playground about 4 min walk
  • TrailMichael Starr Trailabout 6 min walk
  • River or lakeParkwood Fountain and Poolsabout 6 min walk
  • Grocery storeNo Frillsabout 8 min walk
  • DowntownOshawaabout 15 min walk
  • LibraryOshawa Public Libraries - McLaughlin Branchabout 19 min walk
  • Rec centre or arenaDurham Family YMCAabout 11 min walk
  • Golf courseOshawa Golf & Curling Clubabout 14 min walk
  • HospitalLakeridge Health Oshawaabout 5 min walk
  • Highway on-rampExit 418about 2.9 km
  • GO or train stationOshawaabout 4.3 km

Approximate: straight-line distances, and the backyard and street worked out from the map pin and map data © OpenStreetMap contributors. Check school boundaries with the school board.

On the map

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Community

The O'Neill market

O'Neill sale prices

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Costs

What it would cost

%
%
An example rate. Use the one your lender quotes.
Every monthEstimate
Mortgage payment$0
Property tax$0
Monthly total$0
At closing
Ontario land transfer tax$0

Estimates only, not financial advice. Uses Canadian semi-annual compounding, the minimum down payment and mortgage insurance rules, and Ontario’s land transfer tax brackets. Your lender and lawyer confirm the real numbers. Legal fees, title insurance and moving costs aren’t included.

Listing courtesy of Keller Williams Energy Real Estate. Listing information from the PropTx MLS® System. Each listing shows the brokerage that represents it. The information provided herein must only be used by consumers that have a bona fide interest in the purchase, sale, or lease of real estate and may not be used for any commercial purpose or any other purpose. Information is deemed reliable but is not guaranteed accurate by PropTx. Last updated October 28, 2026 at 10:59 a.m.

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