238 Mary St N is a 3-bedroom, 2-bathroom duplex in Oshawa, listed for $799,000. It has 1500-2000 sq ft of living space.
1This legal two-unit home features two self-contained units, each with separate entrances, separate driveways, private kitchens with dishwashers, and in-suite laundry.
2BasementPartially Finished, as described in the listing.
Legal two-storey duplex located in Oshawa's sought-after O'Neill neighbourhood, offering a prime investment property or ideal owner-occupied income opportunity. This legal two-unit home features two self-contained units, each with separate entrances, separate driveways, private kitchens with dishwashers, and in-suite laundry. The main floor unit includes 1 bedroom plus den and one full washroom, while the upper unit has been recently upgraded and offers 2 bedrooms plus den and one full washroom, featuring new laundry appliances, new dishwasher, upgraded LED light fixtures, and new bedroom closet doors. Both units are equipped with central air conditioning and forced-air heating with individual heat sensors, providing efficient climate control. A turnkey duplex in a high-demand rental area, close to schools, transit, shopping, and amenities, making it an excellent opportunity for investors, first-time buyers with rental income, or multi-generational living in Durham Region.
3 bedrooms, 2 bathrooms, about 1,500 sq ft, works out to roughly $533 per square foot. Chat with Zara if you'd like a deeper read on whether this duplex fits your budget and timing.
Inside 238 Mary St N
Every detail from the listing, in one place.
Type
Duplex
Style
2-Storey
Living space
1500-2000 sq ftas stated on the listing
Parking
5 spacesYes garage
Basement
Partially Finished
Features & systems
Parking & garage
Garage
Yes
Parking spaces
5
Interior
Basement
Partially Finished
Lot & land
Lot size (sqft)
0
Listing & possession
Property style
2-Storey
Property class
Duplex
238 Mary St N Price & Sale History
Earlier listings of this property, list-price changes, and the most recent annual property tax on the listing.
For saleListedThis listingMLS® E13495798$799,000
Sourced from MLS®. Includes earlier listings of this property on record.
What's it worth?
How 238 Mary St N Compares to the Oshawa Market
Zara compares it with recent sales of similar homes nearby. It's a guide, not an appraisal.
Independent mortgage broker · OAC · rates subject to change and underwritingMortgage Squad →
Referral disclosure: Summitly may refer you to Mortgage Squad Advisors, an affiliated mortgage partner. You are free to choose any lender or mortgage professional.
Monthly cost
Enter a rate to see the monthly cost
An estimate, not a quote. Utilities and insurance are extra.
Affordability calculator
Estimated monthly payment
$3,925
/mo
based on the purchase price of $799,000
$159,800 cash
$639,200 financed
$538,374 total interest
Principal54%$639,200
Interest46%$538,374
20% down · 25-yr amortization · 5.50% rate. Principal & interest only — taxes, condo fees, and insurance not included.
Want rate-drop alerts and a saved shortlist?
Figures are Summitly estimates for illustration only — not from TRREB or the MLS® feed, and not a mortgage approval, appraisal, or financial advice.
Rental income potential
Est. monthly rent
low–high
Gross yield
rent × 12 ÷ price
Cap rate (est.)
net of tax + fees
Summitly AI estimate for discussion only — not from TRREB or the MLS® feed, and not an appraisal or investment advice. Yield and cap rate are derived from the estimated rent versus the asking price.
For homeowners nearby
Own a home on Mary Street North? See what yours is worth
Get an instant estimate for your own home, based on recent sales around you. A free account shows the number and emails you the full report.
Free · No obligation · Backed by Coldwell Banker
Book a tour of 238 Mary St N with a licensed buyer's agent
Your agent is usually paid from the seller's side. We'll confirm the co-operating commission on this listing before you sign anything.
Zara, any time
Zara · AI virtual agent
Ask about 238 Mary St N day or night. Zara reads this listing and answers in plain words. When you want a person, she hands you to a licensed agent.
A licensed local agent
Your agent shows you the home, checks the paperwork and negotiates your offer, on your side, not the seller's.
Mortgage financing is arranged through Mortgage Squad Advisors. Summitly is the technology platform that powers this site. Estimated values, AI insights, calculator results, and rental projections shown on this page are generated by Summitly and are not provided by, reviewed by, or sourced from TRREB, the MLS®, or the listing brokerage; they are not appraisals or opinions of value. The trademarks REALTOR®, REALTORS®, and the REALTOR® logo are controlled by the Canadian Real Estate Association (CREA) and identify real estate professionals who are members of CREA. The Coldwell Banker® name and logo are trademarks of Coldwell Banker Real Estate LLC.
Similar homes for sale nearby in Oshawa
Other 3-bed homes for sale in Oshawa around $799K.
Average days on market29Homes sold in about 29 days on average.
Sale-to-list ratio99.4%On average, homes sold below asking.
Active listings778Homes for sale here right now.
Median vs prior 90 days−2.5%Compared with Apr 29 – Jul 28, 2026: prices down.
Based on 684 sales from Jul 28 – Oct 26, 2026 (536 in the prior 90 days). Aggregate MLS® figures for closed sales; individual sold prices are shown only to signed-in members.
238 Mary St N is listed at $799,000 (MLS® E13495798). Summitly updates the price as soon as the MLS® record changes.
Is $799,000 a good price for 238 Mary St N?
Summitly rates it Good Deal: the asking price is 3% to 10% below Zara's estimate, an estimate built from recent sales in Oshawa. The rating is an automated opinion, not an appraisal; "What's it worth?" on this page shows how it is worked out. See Zara's estimate
Has the price of 238 Mary St N changed?
No — 238 Mary St N is still listed at its original asking price of $799,000.
How many bedrooms and bathrooms does 238 Mary St N have?
238 Mary St N has 3 bedrooms and 2 bathrooms, with about 1,500–2,000 square feet of living space. It is a duplex in Oshawa.
Is 238 Mary St N close to transit?
The nearest rapid-transit station is Oshawa GO Station (Lakeshore East GO), about 4.1 km in a straight line. Distances are straight-line, not walking routes; check the transit agency for routes and schedules.
How much would the monthly mortgage be on 238 Mary St N?
About $3,925 a month — principal and interest on $799,000 with 20% down ($159,800), a 25-year amortization and an assumed 5.5% interest rate. The mortgage calculator on this page lets you change the down payment, amortization and rate.
How does 238 Mary St N compare with other homes in Oshawa?
Its asking price of $799,000 is about 21% above the median sold price in Oshawa over the last 90 days, $660,000, across 684 closed sales on the TRREB MLS®. A city median mixes every type and size of home, so the comparable sales on this page are the closer guide.
Has 238 Mary St N been sold before?
Summitly has no earlier MLS® sale or lease of 238 Mary St N on record from the last two years. Older records aren't shown under TRREB rules.
Where is 238 Mary St N?
238 Mary St N is in Oshawa, ON. Schools, transit, parks and shops nearby are under Location & lifestyle on this page.
How long has 238 Mary St N been on the market?
122 days — 238 Mary St N was listed on June 26, 2026.
What is the price per square foot of 238 Mary St N?
About $400 to $533 per square foot: the asking price of $799,000 over the 1,500–2,000 sq ft the listing gives as its size range.
Does 238 Mary St N have parking or a garage?
Yes — the listing gives 5 parking spaces. Garage: Yes.
