For a lot of people in Hamilton, house hacking costs less each month than renting, once the rent from the other unit comes in. The hard part is the cash you need up front. The middle asking price for an up and down duplex in Hamilton is $749,900, according to our Hamilton duplex, triplex and fourplex report. That means about $49,990 down at the lowest.
Prices have also come down. In September 2026, the average freehold home in Hamilton sold for $658,653, down 10% from a year earlier, per our Hamilton market report for September 2026. (Freehold means houses, semis and townhouses, not condos.) So the real answer is this: house hacking usually wins on monthly cost, and renting wins only if you have no down payment saved or no wish to be a landlord.
By Sandy MacKay, Found Spaces Realty Group, Hamilton, Burlington and Niagara.
What "cheaper" really means when you house hack
House hacking means you buy a home with two, three or four units. You live in one. You rent out the rest.
To compare it with renting, add up what you pay each month as an owner. That's your mortgage, property tax, home insurance and money set aside for repairs. Then take away the rent your tenant pays you. What's left is your real cost.
Put that number next to your rent today.
There's one more thing most rent-or-buy comparisons miss, and it's the part I'd argue with anyone about: part of every mortgage payment goes toward paying off the loan, so even if your monthly cost lands a little above your old rent, some of that money is still yours, sitting in the house, while rent is gone the day you pay it.
If you want to see how we count repairs, empty months and other costs as a share of the rent, our underwriting standard for income property lays it all out. It even has a prompt you can paste into an AI assistant to check a listing yourself.
The cash you need before day one
Renting needs first and last month. House hacking needs a down payment, and the amount depends on how many units the building has.
For a two-unit home, Canada's insured mortgage rules (set through CMHC) let you put down 5% on the first $500,000 and 10% on the part above that. For three or four units, you need at least 10% down.
Here's what that looks like with the median asking prices in our multiplex report, which tracks Hamilton listings over the past 12 months:
| Building | Median asking price | Price per unit | Lowest down payment |
|---|---|---|---|
| Duplex, side by side | $689,900 | $344,950 | $43,990 |
| Duplex, up and down | $749,900 | $374,950 | $49,990 |
| Triplex | $799,900 | $266,633 | $79,990 |
| Fourplex | $999,900 | $249,975 | $99,990 |
These are asking prices, not sold prices. A home can sell for less, and in a slow market it often does.
One quiet detail: the up and down duplex is by far the most common type. It had 112 listings in 12 months, against 22 for side by side. More choice means you can be picky.
Why a triplex can beat a duplex for your first house hack
This is the part people push back on. A triplex needs about $30,000 more down than an up and down duplex. That scares a lot of first-time buyers off.
Look at the price per unit, though. A Hamilton triplex asks about $266,633 per unit, while an up and down duplex asks about $374,950 per unit, so with a triplex you get two rents helping pay the mortgage instead of one, on a building that costs only $50,000 more at the median.
That can bring your own monthly cost down a lot.
There's a catch. The bank counts less of the rent when it works out what you can afford on a three- or four-unit building. More on that in the questions below. So a triplex can be cheaper to live in and still harder to get approved for. Check both before you fall for one.
A picture of how it plays out
Picture a couple renting an apartment on the Mountain. Their rent goes up a bit every year, and none of it comes back to them. They save for three years and buy an up and down duplex. They move upstairs and rent out the lower unit. Say the tenant pays $2,000 a month (a made-up round number, just for this picture). That $2,000 goes straight toward their mortgage and bills. Their own share ends up close to what they paid in rent, but now part of each payment is paying down a home they own.
The lesson is simple. The tenant's rent is what makes house hacking cheaper. Without it, you're just buying an expensive house.
What a slow Hamilton market means for you
In September 2026, Hamilton had 333 home sales, down 27% from a year before. Homes took 44 days on average to sell. There were 2,557 homes for sale. All of that is from our September 2026 Hamilton report.
In plain words, sellers are waiting longer and buyers have more to pick from.
That gives you time to do things buyers skip when the market is hot. Ask for the current lease and the last 12 months of rent paid, in writing, before you firm up your offer. Ask whether the second unit is legal with the city. Look at the furnace and the electrical panel twice.
A slow market doesn't make every multiplex a good buy. It just gives you room to check, and checking is where most of the savings come from.
When renting is still the smarter call
I'd tell you to keep renting for now in a few cases.
If you don't have the down payment yet, renting while you save is fine. Rushing in with no cushion left for a broken water heater is how people end up hating being landlords.
If you plan to move in two or three years, the costs of buying and selling, like legal fees and land transfer tax, can wipe out what you saved each month.
And if the extra unit isn't legal, be careful. The rent may stop, the city may get involved, and the bank may not count that rent at all.
If none of those fit you, house hacking is very doable for regular people. You can see what's out there on our Hamilton investment properties page.
The takeaway: in Hamilton, house hacking usually costs less each month than renting once a tenant is paying you, but only if you have the down payment and the other unit is legal and rented.
Questions people ask
Does the rent from the other unit help me get approved for a mortgage?
Yes. On a two-unit home, the bank can count up to 100% of the full rent when working out what you can afford. On a three- or four-unit home, it can count up to 50% of the full rent, or the rent after costs. That's why a triplex can be cheaper to live in but harder to get approved for.
Do I have to live in the house to use the low down payment?
Yes. The 5% and 10% down payments are for people who live in one of the units. If you buy a multiplex just to rent out, you'll usually need at least 20% down. Living there is what makes house hacking a first-home option.
Is there an extra city land transfer tax in Hamilton?
No. Hamilton doesn't charge its own land transfer tax the way Toronto does. You pay only Ontario's tax. If you're a first-time buyer, you can get up to $4,000 of it back.
Want to run your own numbers?
The fastest way to know if house hacking beats your rent is to look at one real listing with your real rent next to it. Send me your current rent and the kind of building you're curious about, and we'll work it through together. Start a conversation with our team here.