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Cash-Flowing
Duplex.

Exclusive duplex listings across Ontario. Built for investors who want real numbers — cap rates, rental yield, and monthly cashflow — before they book a showing.

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340+
Active Listings
6.8%
Avg. Cap Rate
$3,200
Avg. Monthly Rent
47
Ontario Markets

Hot Listings This Week

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🏘️
Hot Deal
$549,900
182 Cannon St E — Legal Duplex
📍 Hamilton🛏 4 Bed🚿 2 Bath📐 1,840 sq ft
📈 Est. Cap Rate: 7.4%  ·  $3,650/mo Gross Rent
🏠
New
$479,000
714 Dundas St — Upper/Lower Duplex
📍 London🛏 3 Bed🚿 2 Bath
📈 Cap Rate: 6.9%
🏡
Price Drop
$628,500
33 Park Ave — Semi-Det. Duplex
📍 Kitchener🛏 4 Bed🚿 2 Bath
📈 Cap Rate: 8.1%
🏘️
$398,000
1104 Wyandotte St E — Duplex
📍 Windsor🛏 4 Bed🚿 2 Bath
📈 Cap Rate: 9.2%

Mortgage Calculator

See exactly what your payments will look like before you make an offer. Adjusts in real time.

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Your Payment
$1,642
Bi-weekly · Canadian compounding
Down Payment$130,000
Mortgage Amount$520,000
CMHC Insurance$0
Total Interest Paid$392,468
Total Cost of Mortgage$912,468
PrincipalInterest
57% principal43% interest

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IDX Property Search

Browse All Ontario Duplexes

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47 results for All Ontario
🏘️
$549,900
182 Cannon St E
Hamilton, ON
Cap Rate 7.4%Legal Duplex4 Bed
🏠
$479,000
714 Dundas St
London, ON
Cap Rate 6.9%Upper/Lower3 Bed
🏡
$628,500
33 Park Ave
Kitchener, ON
Cap Rate 8.1%Semi-Det.4 Bed
🏘️
$398,000
1104 Wyandotte St E
Windsor, ON
Cap Rate 9.2%Duplex4 Bed
🏠
$512,000
89 Simcoe St N
Oshawa, ON
Cap Rate 7.1%Legal Duplex4 Bed
🏡
$445,000
220 King St W
Oshawa, ON
Cap Rate 7.8%Upper/Lower4 Bed
Free Tool

Will This Duplex Cashflow?

Plug in any listing's numbers and see your real monthly cashflow, cap rate, and ROI before you buy.

📈 Property Numbers
Monthly Cashflow
+$412
After all expenses + mortgage
Cap Rate
5.2%
Net income / purchase price
Cash-on-Cash ROI
3.8%
Annual cashflow / down payment
Annual Cashflow
+$4,944
Net yearly income
Gross Monthly Rent$4,000
Vacancy Loss−$200
Total Monthly Expenses−$1,408
Net Operating Income$2,392/mo
Monthly Mortgage−$2,820
Net Monthly Cashflow+$412/mo

Want a full amortization breakdown? See how equity builds over 25 years →

Amortization Calculator

The Smartest Play
in Ontario Real Estate

  • 01

    Your Tenant Pays Your Mortgage

    With two units, rental income from one suite typically covers 60–100% of monthly carrying costs — turning homeownership into a wealth-building vehicle.

  • 02

    Lower Entry Point Than Multifamily

    Duplexes qualify for residential mortgages, meaning lower down payments and better rates than commercial financing. Accessible for first-time investors.

  • 03

    Ontario's Rental Demand Is Structural

    Immigration targets, affordability pressures, and a housing supply gap mean sustained demand for quality rental units across all major Ontario markets.

  • 04

    Force Appreciation Through Conversion

    Converting a single-family home into a legal duplex can add $80K–$150K in value while dramatically improving cashflow — a double win.

Average Returns by Market
Windsor
9.2%
Oshawa
7.8%
Kitchener
8.1%
Hamilton
7.4%
London
6.9%
Barrie
6.2%
* Estimated cap rates based on current asking prices and market rents. Not financial advice.

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Investor Stories

What Our Investors Say

★★★★★

"Found a Hamilton duplex at 7.4% cap rate through this platform. My tenant covers the entire mortgage. I couldn't have found this deal on my own."

Mark T.
First-time investor · Hamilton, ON
★★★★★

"The cap rate filters are a game-changer. I only see deals that make sense on paper before I book a showing. Saved me dozens of wasted hours."

Priya S.
Portfolio of 3 duplexes · Kitchener, ON
★★★★★

"Bought my first Windsor duplex at a 9.1% cap rate. OntarioDuplex showed me markets I hadn't even considered. Now cashflowing $800/mo net."

Daniel R.
Investor · Windsor, ON
New — Ontario Investing Blueprint

The $5 Guide That Pays For Itself On Deal One

Video + PDF walkthrough covering the exact markets, numbers, and strategy Ontario duplex investors are using to cash-flow $500–$1,200/mo — even with today's rates.

  • The 5 Ontario markets still worth buying in 2025
  • How to analyze a duplex deal in 10 minutes
  • The 3 mistakes first-time investors make
  • What "serious investor" mode actually looks like
Get the Blueprint — $5 →
Instant access · Video + PDF · No fluff
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What's inside
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OntarioDuplex Assistant

Have a Question About a Duplex Deal?

Our AI assistant can help you analyze any listing, explain cap rates and cashflow, walk you through financing options, and answer any question about Ontario duplex investing — right now.