390 Mary St N is a 4-bedroom, 3-bathroom detached home in Oshawa, listed for $929,900. 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, garden, 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 to relax, entertain, or work from home. One of the home's standout features is the amazing in-law suite spanning the back of the second and third floors, offering an open concept kitchen and living room with electric fireplace, 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, garden, entertain, or simply unwind. The oversized 2-car garage provides exceptional space for parking, storage, hobbies, and more. With its updated finishes, flexible living space, fantastic in-law 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, one HWT is owned.
4 bedrooms, 3 bathrooms, about 1,500 sq ft, works out to roughly $620 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® E14084356$929,900
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.
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
$4,568
/mo
based on the purchase price of $929,900
$185,980 cash
$743,920 financed
$626,576 total interest
Principal54%$743,920
Interest46%$626,576
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 390 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 390 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 3–4 bed homes for sale in Oshawa around $930K.
Average days on market28Homes sold in about 28 days on average.
Sale-to-list ratio99.5%On average, homes sold below asking.
Active listings827Homes for sale here right now.
Median vs prior 90 days−1.1%Compared with Apr 18 – Jul 17, 2026: prices down.
Based on 666 sales from Jul 17 – Oct 15, 2026 (538 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 $929,900 (MLS® E14084356). Summitly updates the price as soon as the MLS® record changes.
Is $929,900 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 $929,900.
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 $4,568 a month — principal and interest on $929,900 with 20% down ($185,980), 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.
Are there open houses at 390 Mary St N?
Yes — Saturday, October 17, 2:00 PM – 4:00 PM. Open-house times come from the listing brokerage and can change, so check this page before you go, or book a private viewing.
How does 390 Mary St N compare with other homes in Oshawa?
Its asking price of $929,900 is about 39% above the median sold price in Oshawa over the last 90 days, $667,350, across 666 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 15, 2026).
What is the price per square foot of 390 Mary St N?
About $465 to $620 per square foot: the asking price of $929,900 over the 1,500–2,000 sq ft the listing gives as its size range.
