The True Monthly Cost of Owning a Rental: Toronto vs Hamilton vs London

Ask a landlord what their rental costs and they'll quote you the mortgage. It's the biggest single number, so it feels like the answer. But the mortgage is the smallest surprise in the whole deal — it's the one figure you can look up before you sign, and it barely moves after. Whether a rental actually cash-flows is decided by everything stacked on top of it.

That stack — property tax, insurance, condo fees, a real maintenance and reserve line, and vacancy — is where deals are quietly won or lost. And here's the part that trips up even experienced buyers: take the same purchase price and the same rent, drop it into Toronto, Hamilton, and London, and you get three completely different true monthly costs. The gap between them is mostly tax, insurance, and fees. It is almost never the mortgage.

This page walks the full stack line by line across those three cities, shows why a "low-tax" city can still hand you a bigger bill than a "high-tax" one, and gives you a repeatable way to price any rental honestly before you sign. The three cities aren't a ranking — they bracket a spread, so the method works anywhere. Every dollar figure here is an illustration, dated July 2026 and sourced; this is market data and a method, not investment advice.

The Mortgage Is the Smallest Surprise: Meet the Cost Stack

Start by reframing what you're actually buying. The mortgage is predictable — you know the rate, the amortization, and the payment before you sign, and it doesn't change month to month. That predictability is exactly why it's the smallest source of surprise. The lines that actually decide whether the deal works are the ones people wave away as "and some other costs."

There are five of them, and each moves independently:

• Property tax — the line that swings most from city to city.
• Insurance — a commercial cost that reprices with risk.
• Condo fees — if you're buying a condo, a rising line with hidden traps.
• Maintenance and reserve — the line do-it-yourself landlords quietly leave out.
• Vacancy — a real cost, not a rounding error.

Several of those move by city, which is why the same deal costs differently depending on where it sits. Toronto, Hamilton, and London bracket the spread cleanly: Toronto has a low tax rate but high prices; Hamilton sits in the middle on both; London has a higher tax rate but lower prices. Same exercise, three carrying-cost profiles. Run it and you can see, plainly, that the sticker price never tells you what a deal costs. This is the same honest-numbers approach behind our cap rates and average rents by Ontario city page and the best Ontario cities to buy a rental pillar — the stack is what a cap rate is built from.

Line by Line: Property Tax, Insurance, Condo Fees

Property tax — the biggest swing, and the rate-vs-bill trap

Property-tax rates run roughly 0.77% of assessed value in Toronto, about 1.26% in Hamilton, and around 1.37% in London for 2026. Read those three numbers and you'd assume London is the expensive one and Toronto the bargain. That's the trap. The rate is not the bill — the bill is the rate multiplied by the assessed value, and Ontario assessments are frozen at January 1, 2016 values because the province cancelled the planned reassessment. So a low rate can sit on a frozen-low assessment while a higher rate sits on a lower-priced home. The classic illustration: a Toronto home assessed at $770,000 at about 0.69% produces a bill near $5,300, while an Oshawa home assessed at $356,000 at about 1.56% produces a bill near $5,600 — nearly the same dollars from very different rates. Always pair the rate with the assessed value. This is the core lesson of our property tax rates by Ontario city data page, applied to three markets at once.

Insurance — the line first-timers underbudget

A rental is a business, so it needs a commercial landlord policy — a standard homeowner policy is not designed to cover a property you rent out, and relying on one can leave you uncovered when it matters. Landlord insurance typically runs $1,500–$2,500 a year in Canada, and most mortgage lenders require it as a condition of financing. It covers property damage, liability, loss of rental income after an insured loss, and often equipment breakdown — and because it's priced on the cost to rebuild rather than market value, and reprices with location and flood risk, the same coverage can cost noticeably more in a higher-risk area. That flood-and-location repricing is a live cost story we cover in where NOT to buy a rental in Ontario and in our landlord insurance in Ontario guide.

Condo fees — the form-specific line

If you're buying a condo, fees are the owner's cost and they come straight out of your net. In Toronto they run roughly $0.55 to $1.00 or more per square foot per month, rise 3–5% a year with no provincial cap, and can spike through a special assessment if the building's reserve fund is thin. The nuance that saves money: read what's bundled. A $680 fee that includes water, heat, and hydro can be a lower true cost than a $450 fee that excludes them and leaves you paying utilities separately. Pull the reserve fund study (Ontario requires one every three years) and the fee-increase history before you trust any condo's number.

The Lines People Skip — and How to Price Them

Maintenance and reserve is the line do-it-yourself landlords most often leave out. A freehold owner has to self-fund exactly what a condo fee bundles: roof, furnace, exterior, snow, landscaping, and a reserve for major capital repairs. Skip it and a furnace-plus-roof year can erase two years of "profit" in one shot. Budget it or it budgets you — the point isn't a specific number (set your own), it's that the line is never zero.

Vacancy is the other one. A vacant month is a real cost, and in a loosening market it's a bigger one than it used to be: units take longer to fill and may need incentives to lease. Budget realistic lease-up time and effective rent, not the top-of-market asking figure. This ties directly to what's happening across the province right now — see vacancy rates by Ontario city for how to read that number without over- or under-reacting to it.

Put those two lines in and one discipline falls out of the whole exercise: compare net, not gross. The same $2,400 rent nets differently in three cities once the full stack is applied. So "which city is cheaper" is really "which city has the lighter stack for this specific deal" — and you only find out by running all the lines, never by comparing sticker prices or gross rents. A few ways the misread shows up in practice: the buyer who picks Toronto purely for its low tax rate and forgets the frozen-2016 assessment, the higher price, and the condo fees; the buyer who chases a "cheap" $450 condo fee that excludes utilities over a $680 fee that includes them; and the freehold landlord who underwrites with no reserve line and meets a big-ticket repair in year three. All three are illustrative — and all three are avoidable with the stack.

Putting the Stack to Work Across the Cycle

The stack isn't static. Property-tax budgets finalize every spring — Hamilton's 2026 budget added 3.87%, roughly $209 on the average assessed home — insurance has been repricing upward, and condo fees compound year after year (a fee rising 4% annually is nearly 48% higher in a decade). A stack that cash-flows the day you buy needs re-checking every year.

What you do with it is simple and repeatable: run the same five lines on every deal you look at, in every city, and compare the net. That's how you tell a genuinely cheaper city from a cheaper sticker price. It's also the same P&L thinking that carries straight into your books — the lines you underwrite are the lines you'll track, so building the stack sets up your bookkeeping at the same time.

Finally, the rules that let you keep pace with a rising stack. The 2026 provincial guideline is 2.1%, applied with an N1 and 90 days' notice; units first occupied after November 15, 2018 are exempt from the guideline and use the N2. Deposits are last-month's-rent only, there are no legal late fees, and NSF charges are capped at $20. You can model an in-tenancy increase with our Ontario rent increase calculator. The stack tells you what the property costs; these rules tell you how much of it you can pass through in rent.

Key Takeaways: Pricing a Rental Honestly

Seven moves that turn a sticker price into a true monthly cost:

1. Start every underwrite from the stack, not the mortgage. The mortgage is the easy part.
2. Pair every tax rate with the actual assessed value. Rate is not bill — assessments are frozen at 2016 values.
3. Budget a commercial insurance line ($1,500–$2,500/yr typical) and check the flood and location repricing.
4. For condos, read what the fee bundles and pull the reserve fund study before you trust the number.
5. Always carry a maintenance and reserve line, even on a freehold. It's never zero.
6. Budget realistic vacancy and lease-up, not the asking-rent headline.
7. Compare cities on net after the full stack — never on gross rent or sticker price.

Quick win: before your next offer, build all five lines for the exact unit in the exact city and add the mortgage last. Long game: the landlord who underwrites the whole stack prices deals honestly and isn't the one surprised in year three. For the market layer around these lines, our Hamilton investment guide shows the mid-bracket city in context.

The Bottom Line

The mortgage is the smallest surprise. What decides whether a rental cash-flows is the carrying-cost stack — property tax (where the rate is not the bill), insurance, condo fees (where you read what's bundled), maintenance and reserve, and vacancy. Run those same five lines on the same price and the same rent in Toronto, Hamilton, and London and you get three different true costs, with the gap sitting mostly in tax, insurance, and fees rather than the mortgage. The three cities aren't a recommendation; they're proof that the sticker price and the headline rate never tell you what a deal actually costs. Build the stack, compare the net, and re-check it every year as budgets and premiums move. Figures are illustrative, dated July 2026 and sourced; this is market data and a method, not investment advice.

Related Resources

• Property Tax Rates for Landlords: Every Ontario City Compared — the rate table behind the rate-vs-bill lesson.
• Cap Rates and Average Rents by Ontario City — the cap rate the stack feeds into.
• Vacancy Rates by Ontario City — how to price the vacancy line without over-reacting.
• Where NOT to Buy a Rental in Ontario — the flood and insurance repricing behind the insurance line.
• Landlord Insurance in Ontario — what's standard, what it costs, and where the gaps are.
• Best Ontario Cities to Buy a Rental Property in 2026 — the pillar that frames market selection.
• Ontario Rent Increase Calculator — model how much of a rising stack you can pass through.

This article is general market information for Ontario landlords and investors, current as of July 14, 2026. It is not investment, financial, tax, or legal advice, and it does not rank cities or recommend where to buy. All dollar figures are illustrative; property-tax rates are municipal-sourced (2026, approximate) and Ontario assessments are frozen at 2016 values; insurance, condo-fee, and mortgage figures are attributed market ranges. Municipal rates finalize by roughly April 30 each year — verify current figures for your specific property and city, and consult qualified professionals before making decisions. Sources: municipal 2026 tax rates; CMHC; market insurance and condo-fee ranges, 2026.