390 Mary St N is a 4-bedroom, 3-bathroom detached home in Oshawa, listed for $899,900. It has 1500-2000 sq ft of living space.
1Welcome to this beautifully updated 2 1/2-storey home, ideally situated in a fabulous area of tree-lined streets and well within excellent school districts!
2Outside, enjoy a large lot with plenty of room to play, entertain, or simply unwind.
3The oversized 2-car garage provides exceptional space for parking, storage, hobbies, and more.
Welcome to this beautifully updated 2 1/2-storey home, ideally situated in a fabulous area of tree-lined streets and well within excellent school districts! Offering a versatile layout with plenty of space for the whole family, the main and second floor of this home features an eat-in kitchen, 2 bedrooms and 2 full bathrooms, along with a finished basement providing even more room for guests/ teens, entertain, or work from home. One of the home's standout features is the amazing second suite spanning the back of the second and all of the third floors, offering an open-concept kitchen and living room with an electric fireplace, it's own washer & dryer, 2 more bedrooms and a full bathroom. Perfect for extended family, multi-generational living, guests, or added flexibility to suit your needs. Outside, enjoy a large lot with plenty of room to play, entertain, or simply unwind. Perfect area for kids to safely play street hockey, basketball, etc. and the little ones to ride their bikes! The oversized 2-car garage provides exceptional space for parking, storage, hobbies, and more. With its updated finishes, flexible living space, bright second suite, generous lot, and sought-after location close to great schools and everyday amenities, this home offers a wonderful combination of comfort, convenience, and versatility. A fantastic opportunity for families looking for room to grow and space for everyone! Two electrical panels, two hot water tanks. The two rooms in the basement are presently being used as bedrooms with large windows but no closets. Two separate units, there is no access to the second suite from the main house. Would suit families with out of town students looking to share a house or out of town hospital or court staff. Easy walk to downtown campuses and Lakeridge Health. Updated and move in ready. Includes 2 fridges, 2 stoves, 2 built-in microwaves, 2 dishwashers, 2 washers & 2 dryers.
4 bedrooms, 3 bathrooms, about 1,500 sq ft, works out to roughly $600 per square foot. Chat with Zara if you'd like a deeper read on whether this detached fits your budget and timing.
Inside 390 Mary St N
Every detail from the listing, in one place.
Type
Detached
Style
2 1/2 Storey
Living space
1500-2000 sq ftas stated on the listing
Parking
5 spacesYes garage
Basement
Partially Finished, Separate Entrance
Features & systems
Parking & garage
Garage
Yes
Parking spaces
5
Interior
Basement
Partially Finished · Separate Entrance
Lot & land
Lot size (sqft)
0
Listing & possession
Property style
2 1/2 Storey
Property class
Detached
390 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® E14101730$899,900
Sourced from MLS®. Includes earlier listings of this property on record.
What's it worth?
How 390 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.
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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
$4,421
/mo
based on the purchase price of $899,900
$179,980 cash
$719,920 financed
$606,362 total interest
Principal54%$719,920
Interest46%$606,362
20% down · 25-yr amortization · 5.50% rate. Principal & interest only — taxes, condo fees, and insurance not included.
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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.
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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 3–5 bed homes for sale in Oshawa around $900K.
Average days on market28Homes sold in about 28 days on average.
Sale-to-list ratio99.4%On average, homes sold below asking.
Active listings815Homes for sale here right now.
Median vs prior 90 days−2.1%Compared with Apr 24 – Jul 23, 2026: prices down.
Based on 665 sales from Jul 23 – Oct 21, 2026 (539 in the prior 90 days). Aggregate MLS® figures for closed sales; individual sold prices are shown only to signed-in members.
390 Mary St N is listed at $899,900 (MLS® E14101730). Summitly updates the price as soon as the MLS® record changes.
Is $899,900 a good price for 390 Mary St N?
Summitly rates it Fair Price: the asking price is Within 3% below to 5% above 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 390 Mary St N changed?
No — 390 Mary St N is still listed at its original asking price of $899,900.
How many bedrooms and bathrooms does 390 Mary St N have?
390 Mary St N has 4 bedrooms and 3 bathrooms, with about 1,500–2,000 square feet of living space. It is a detached home in Oshawa.
Is 390 Mary St N close to transit?
The nearest rapid-transit station is Oshawa GO Station (Lakeshore East GO), about 4.4 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 390 Mary St N?
About $4,421 a month — principal and interest on $899,900 with 20% down ($179,980), 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 390 Mary St N compare with other homes in Oshawa?
Its asking price of $899,900 is about 35% above the median sold price in Oshawa over the last 90 days, $665,000, across 665 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 390 Mary St N been sold before?
Summitly has no earlier MLS® sale or lease of 390 Mary St N on record from the last two years. Older records aren't shown under TRREB rules.
Where is 390 Mary St N?
390 Mary St N is in Oshawa, ON. Schools, transit, parks and shops nearby are under Location & lifestyle on this page.
How long has 390 Mary St N been on the market?
390 Mary St N was listed today (October 21, 2026).
What is the price per square foot of 390 Mary St N?
About $450 to $600 per square foot: the asking price of $899,900 over the 1,500–2,000 sq ft the listing gives as its size range.
Does 390 Mary St N have parking or a garage?
Yes — the listing gives 5 parking spaces. Garage: Yes.
