A triplex in Hamilton costs about $266,633 per unit at the median asking price. That comes from a median ask of $799,900 across 71 triplex listings over the past 12 months, in our Hamilton duplex, triplex and fourplex price report. These are asking prices, not sale prices, so treat them as the starting line.
For context, the average freehold home in Hamilton sold for $661,460 in September 2026. That was down 10% from a year earlier, per our September 2026 Hamilton market report. So a typical triplex asks about $138,000 more than the average house sells for, and it gives you three doors instead of one. (One is a median ask and the other is an average sale, so it's a rough comparison. It still tells you the shape of the deal.)
The per-door price drops fast after two units
Here's the part most people miss. The big discount shows up when you go from two units to three.
An up-and-down duplex asks a median of $374,950 per unit. A triplex asks $266,633. That's about $108,000 less per door.
Then go from three units to four. A fourplex asks $249,975 per unit. That's only about $16,700 less than a triplex.
So the triplex is where the per-door price really falls. My view is that it's the most underrated building size in this city. Duplexes get bid up by house hackers who want to live in one unit. Triplexes are a bit too much building for most of those buyers, and that keeps the price per door down.
Why a triplex door is cheaper (and why that's not always a bargain)
A lower price per unit has reasons behind it. You have to know which reason applies to the building in front of you.
In a lot of older Hamilton triplexes, the three units are not equal. You might get a big main floor, a small one-bedroom up top and a basement unit with low ceilings. A "door" in that building is worth less than a full two-bedroom door. The per-unit number hides that.
Age matters too. Many of these are converted houses. Converted houses tend to come with old wiring, shared heating and a long list of patch jobs.
Then there's legal status. Some triplexes on the market have three units that were never fully permitted. A unit the city doesn't recognize is a risk to your insurance, your financing and your rent. Before you trust any per-door figure, ask the seller for permits and confirm the use with the City of Hamilton. Fire separation and smoke alarms are part of that check.
The takeaway: a cheap door is only cheap if it's legal, rentable and worth the rent you're counting on.
How to turn the price per unit into a real number
Price per door is a fast filter. It doesn't tell you if a deal works. For that you need the rent.
I don't have a reliable average rent for Hamilton triplex units in this data, so I won't make one up. Here's what I watch instead.
Ask for the rent roll and the leases. Check each unit's rent against what a similar unit nearby rents for today. Long-time tenants often pay well under market. That can be upside later, but it isn't cash flow on day one.
Then run the building the way a lender would. Work out net operating income, the cap rate and whether the rent covers the mortgage with room to spare. Our underwriting standard lays out how we do each step. It also lists the operating cost assumptions we use as a share of rent. Use it, and don't just trust the seller's feature sheet.
Where in Hamilton the per-door price moves
A city-wide median blends very different streets. A triplex in the lower city and one up the Mountain can ask very different prices per unit. That gap is about land value, tenant demand and the age of the stock.
The multiplex report breaks the median price per unit down by neighbourhood. Start there before you decide a listing is high or low. A building that looks expensive city-wide can be fair for its own pocket.
What the slower market means for a triplex buyer
Hamilton had 330 sales in September 2026, down 29% from a year earlier. Homes took 45 days on average to sell, and 2,529 homes were for sale. That's a lot of choice and a lot of time.
For a triplex buyer, that means room to do the work. You can get the permits checked and read the leases before you firm up. Condition periods are easier to ask for when sellers aren't drowning in offers. More of our thinking on this sits on our Hamilton investment properties page.
Questions people ask
Is a triplex cheaper per unit than a duplex in Hamilton?
Yes, at the median asking price. A side-by-side duplex asks $349,500 per unit and an up-and-down duplex asks $374,950, compared with $266,633 for a triplex. There are also far more duplexes listed. Up-and-down duplexes had 133 listings in 12 months, against 71 for triplexes.
Is a fourplex a better deal per door than a triplex?
It's slightly cheaper per door, at $249,975 per unit. But only 32 fourplexes were listed in 12 months, so you have fewer to choose from. Four units is also the most you can usually finance with a residential mortgage in Canada. Five or more units generally moves you to commercial lending.
Do Hamilton triplexes sell for less than asking?
I don't have a sale-to-list figure for triplexes alone, so I won't guess one. The asking prices in our report are from listings, and sale prices can land above or below them. What I can say is that the whole market slowed in September 2026, with an average of 45 days on market. That usually gives buyers more room to negotiate.
Want a second set of eyes on a Hamilton triplex?
If you've found a triplex and want to know what a door in that building is really worth, send it to me. We'll look at the rents, the legal status and the street together. Book a plain conversation with our team.