10 Ontario St is a 4-bedroom, 3-bathroom duplex in Guelph, listed for $799,000. It has 1500-2000 sq ft of living space.
1Welcome to 10 Ontario Street!
2This property holds immense current and future value!
3The main floor and basement are one unit with 5 bedrooms, and the second level is a separate, self-contained 2-bedroom unit completely detached from the lower unit and accessed via the rear deck and staircase.
Welcome to 10 Ontario Street! This property holds immense current and future value! Let's start with its current value. This is a legal 2-unit, 7-bedroom duplex offering $6195 per month in rental income, or $74,340 annually. The main floor and basement are one unit with 5 bedrooms, and the second level is a separate, self-contained 2-bedroom unit completely detached from the lower unit and accessed via the rear deck and staircase. The lower and upper units rent for $3995 and $2200 per month, respectively. With owner's expenses last year at approximately $16,379 (gas $1802, hydro/water $4134, internet $959, insurance $2873, taxes $6611), leaving $57,961 after owner expenses, there is ample room left to cover mortgage expense and management costs. But that's not all! This property also has a city-approved, conditional severance in place and is at the stage where a new buyer could take over, fulfill the conditions of severance, and have two fully separated lots, allowing for a sale of the second lot to recapture some capital, or to retain the lot and build another multiplex. With stabilized revenue in place, this investment can carry itself while a new owner completes the lot severance and sale or plans their new build. Either way, this is an exceptional opportunity for the savvy investor. Get in touch with your realtor and book your private showing today!
4 bedrooms, 3 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 10 Ontario St
Every detail from the listing, in one place.
Type
Duplex
Style
2-Storey
Living space
1500-2000 sq ftas stated on the listing
Parking
3 spacesYes garage
Basement
Full, Finished with Walk-Out
Features & systems
Parking & garage
Garage
Yes
Parking spaces
3
Interior
Basement
Full · Finished with Walk-Out
Lot & land
Lot size (sqft)
0
Listing & possession
Property style
2-Storey
Property class
Duplex
10 Ontario St Price & Sale History
Earlier listings of this property, list-price changes, and the most recent annual property tax on the listing.
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.
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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 Guelph
Other 3–4 bed homes for sale in Guelph around $799K.
Average days on market38Homes sold in about 38 days on average.
Sale-to-list ratio97.6%On average, homes sold below asking.
Active listings652Homes for sale here right now.
Median vs prior 90 days+0.7%Compared with Apr 25 – Jul 24, 2026: prices up.
Based on 632 sales from Jul 24 – Oct 22, 2026 (441 in the prior 90 days). Aggregate MLS® figures for closed sales; individual sold prices are shown only to signed-in members.
10 Ontario St is listed at $799,000 (MLS® X13727156). Summitly updates the price as soon as the MLS® record changes.
Is $799,000 a good price for 10 Ontario St?
Summitly rates it Excellent Deal: the asking price is 10% or more below Zara's estimate, an estimate built from recent sales in Guelph. 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 10 Ontario St changed?
Yes — it was first listed at $850,000 and is now $799,000, a drop of $51,000 (6.0%).
How many bedrooms and bathrooms does 10 Ontario St have?
10 Ontario St has 4 bedrooms and 3 bathrooms, with about 1,500–2,000 square feet of living space. It is a duplex in Guelph.
Is 10 Ontario St close to transit?
The nearest rapid-transit station is Guelph Central GO Station (Kitchener GO), about 530 m (about a 7-minute walk) 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 10 Ontario St?
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 10 Ontario St compare with other homes in Guelph?
Its asking price of $799,000 is about 8% above the median sold price in Guelph over the last 90 days, $740,500, across 632 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 10 Ontario St been sold before?
Summitly has no earlier MLS® sale or lease of 10 Ontario St on record from the last two years. Older records aren't shown under TRREB rules.
Where is 10 Ontario St?
10 Ontario St is in Guelph, ON. Schools, transit, parks and shops nearby are under Location & lifestyle on this page.
How long has 10 Ontario St been on the market?
52 days — 10 Ontario St was listed on August 31, 2026.
What is the price per square foot of 10 Ontario St?
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 10 Ontario St have parking or a garage?
Yes — the listing gives 3 parking spaces. Garage: Yes.
