43.9069° N · 78.8653° W — O'Neill, Oshawa — MLS® #E14107444
342 Mary St
$449,000
O'Neill, Oshawa, Ontario L1G 5C8
- 2
- BedroomsBeds
- 2
- BathroomsBaths
- 3000-3500 sqft3000-3500
- SizeSq ft
- 52.11 x 142.31 ft
- Lot sizeLot
Inquire about this listing
In short · from the listing record
342 Mary St is a 2-bedroom, 2-bathroom detached house in O'Neill, Oshawa, listed for sale at an asking price of $449,000 (MLS® E14107444).
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!
Listing readings
How it measures up
Scores from the listing record and the market around it.
56Fair
Condition score
Listing notes possible renovation needs
Listing age, structured features and disclosed update language; not an inspection.
50Near break-even
Cash flow quality
−$248/mo against the cost of owning (20% down, 4.8%, 25 yrs)
Median of 7 detached homes with 2 bedrooms for lease in O'Neill right now. Cost of owning counts the mortgage and property tax.
Condition uses listing-record signals, not an inspection.
The data table
Every fact
Everything the board publishes for this home.
- Tax
- $6,585 / 2026
- MLS® number
- E14107444
- Board
- TRREB MLS®
- Property Type
- Detached
- Time on market
- Size
- 3000-3500 sqft
- Lot Size
- 52.11 x 142.31 ft
- Listed on
- Parking
- 1 Attached, 5 Parking
Listing history
Listing activity for 342 Mary St, Oshawa, Ontario
| Date Start | Date End | List Price | Price | Event | Listing ID |
|---|---|---|---|---|---|
| Date StartN/A | N/A | $449,000 | N/A | For Sale | E14107444 |
Inside
Room by room
From the listing.
- Kitchen2.89 × 5.51 mWindow, Open Concept
- Living3.88 × 3.97 mWindow, Open Concept
- Dining3.48 × 3.69 mWindow, Open Concept
- Primary3.23 × 4.86 mHis/Hers Closets, Window, Broadloom
- 2nd Br2.52 × 3.19 mWindow, Closet, Broadloom
Property
- Property Type
- Detached
- Style
- 1 1/2 Storey
- Community
- O'Neill
- Municipality
- Oshawa
Building
- Size
- 3000-3500 sqft
- Construction
- Brick Front
Inside
- Bedrooms
- 2
- Bathrooms
- 2
- Bathroom Details
- 1 × 4pc Upper, 1 × 2pc Main
- Basement Type
- Unfinished
- Kitchens
- 1
Parking
- Driveway
- Private
- Garage Type
- Attached
- Garage
- 1
- Additional Parking
- 4
- Total Parking
- 5
Utilities
- Water
- Municipal
- Cooling
- Central Air
- Heating Type
- Forced Air
Land
- Sewer
- Sewers
- Frontage
- 52.11 ft
- Depth
- 142.31 ft
- Lot Size
- 52.11 x 142.31 ft
Where it sits
The street and the area
Asking prices on the map.
Map and tour
Transit nearby
| Station | Lines | Distance |
|---|---|---|
| Durham College Oshawa GO | GO Transit train: Lakeshore East | 4.3 km |
The nearest subway, light rail, train, bus rapid transit stations 5 km, as the crow flies. Source: GO Transit schedule data (GTFS) from Metrolinx under the Open Government Licence – Ontario – Metrolinx, downloaded October 18, 2026. Data used in this product or service is provided with the permission of Metrolinx. Metrolinx makes no representations or warranties of any kind, express or implied, with respect to the Data and assumes no responsibility for the accuracy or currency of the data used in this product or service. Contains information licensed under the Open Government Licence – Ontario – Metrolinx.
Around it
Detached in O'Neill
Active listings only, today.
Detached homes for sale in O'Neill right now
- For sale now
- 43
- Median asking price
- $680K
- New in 7 days
- 8
- Price cuts
- 9%
Middle half: $592K to $724K
25 in 28 days
4 listings
This home is asking 34% below the median, lower than three quarters of them.
See all homes in O'NeillAsking prices and counts of the MLS® listings on this site as of today. Asking figures only, never sold or leased prices.
Site report
What the record says
What the City and the conservation authority have on file for this address.
- provincial plansNone in rangeOutside the Greenbelt, Oak Ridges Moraine and Niagara Escarpment plan areas
- wetlandNone in rangeNo mapped wetland within 120 m
- aggregateNone in rangeNo licensed pit or quarry within 2 km
- wellsNone in rangeNo recorded oil, gas or salt well within 250 m
- trailOn recordA trail on the Ontario trail network within 1 km
- airportOn recordNearest airport: 2.0 km
- water wellsNone in rangeNo water-supply well recorded within 250 m 2 test or monitoring holes also recorded.
- npriNone in rangeNo facility within 1 km reports pollutant releases to Environment Canada Only facilities above the inventory’s reporting thresholds are listed.
- fcsiOn record1 federal contaminated site within 1 km All of them are closed. The federal inventory covers federal land only, not provincial or private sites.
- electricityOn recordElectricity is distributed here by Oshawa PUC Networks Inc.
- internet speedOn recordWired internet 50/10 Mbps or faster is listed at a household 60 m away Fixed wireless 50/10 Mbps or faster. LTE mobile coverage listed. ISED’s National Broadband Data at the nearest household point (60 m from the listing); 50/10 Mbps is its top category and includes faster plans. Confirm with a provider for this address.
- broadbandOn recordAcross the surrounding area: fibre to the home, cable, DSL internet listed Fibre to the home: Bell, NFTC, Rogers. Cable: Rogers. DSL: Bell. Fixed wireless: Bell, Dash Networks, Rogers, Ruralwave, Xplore. Mobile: Bell, Freedom Mobile, Rogers, Telus. Satellite: Xplore. ISED’s list for the surrounding ~25 km² area; check with a provider for this address.
Each record is the map at the home’s location, not an inspection. Confirm anything that matters with the municipality, Central Lake Ontario Conservation or the record’s publisher.
Contains information licensed under the Open Government Licence – Canada. Contains information licensed under the Open Government Licence – Ontario.
Lot
- Lot area
- 7,416 sq ft689 m²
- Street frontage
- 52.11 ft15.9 m
- Depth
- 142.31 ft43.4 m
The area is the frontage multiplied by the depth, so boundaries are approximate. Confirm with a survey before you buy.
Source: the MLS® listing record.
Land transfer tax on this home
- Ontario land transfer tax
- $5,455
- Total land transfer tax
- $5,455
- First-time buyer rebates (Ontario up to $4,000)
- −$4,000
- Total for first-time buyers
- $1,455
See how this is worked out
- 0.5% on the first $55,000
- $275
- 1.0% from $55,000 to $250,000
- $1,950
- 1.5% from $250,000 to $400,000
- $2,250
- 2.0% from $400,000 to $449,000
- $980
- Ontario total
- $5,455
An estimate at the asking price, for a home with one or two single-family residences. Your lawyer confirms the exact amount.
Schools
Nearest schools
Straight-line distances. Check catchments with the board.
ElementaryEQAO average 2024–25
- S A Cawker Public SchoolDurham DSBPublic · grades JK–872%Grade 6 average150 m
- Mary Street Community SchoolDurham DSBPublic · grades JK–876%Grade 6 average700 m
- St Christopher Catholic SchoolDurham CDSBCatholic · grades JK–8 · French Immersion65%Grade 6 average1.5 km
- École élémentaire Antonine MailletConseil scolaire ViamondeFrench-language public · grades JK–8100%Grade 6 average2.1 km
SecondaryGrade 9 math 2024–25
- O'Neill Collegiate and Vocational InstituteDurham DSBPublic · grades 9–1249%Grade 9 math150 m
- R S Mclaughlin Collegiate and Vocational InstituteDurham DSBPublic · grades 9–12 · French Immersion53%Grade 9 math2.1 km
- Monsignor Paul Dwyer Catholic High SchoolDurham CDSBCatholic · grades 9–12 · French Immersion47%Grade 9 math2.3 km
- ÉSC Saint-Charles-GarnierConseil scolaire catholique MonAvenirFrench-language Catholic · grades 9–1267%Grade 9 math7.5 km
EQAO: share of students at or above the provincial standard, 2024–25 (Ontario open data). These are the schools nearest this home, not the schools it is assigned to: boundaries change, and some schools take students by application. Confirm with the board before you buy. Contains information licensed under the Open Government Licence – Ontario.
Searches this home is in
Keep looking
The ledger
What it costs to own
Worked out for this home. Change any number.
A month, all in
$2,598
- Mortgage$2,049
- Property tax$549
A planning figure, not a quote.
Land transfer tax
$5,455
$1,455 for first-time buyers.
Rent, similar homes
$2,350
a month, median asking rent of 7 similar homes in O'Neill.
Community
Who lives around it
Similar homes
You might also like
For sale nearby at a similar price.
Shemeer AhmadVALERY REAL ESTATE INC.
Want to see it this week?
Ask me anything about this home, or what fair looks like nearby.