By Joel Marshall | Marshall & Company
The monthly cost of owning a home includes more than the mortgage. A useful Ottawa homeownership budget also accounts for property taxes, insurance, utilities, condominium or association fees where applicable, and money set aside for maintenance.
The amount depends on the property, your financing and how you live. Two homes with similar purchase prices can leave you with very different monthly commitments.
My advice is to compare the complete budget before deciding which home fits.
Start with a mortgage estimate, then build the full picture
The Marshall & Company mortgage calculator lets you explore purchase prices, down payments, interest rates and amortization periods. It also includes inputs for property taxes, home insurance and applicable fees.
Use it as an initial planning tool, then replace estimates with property-specific information and your lender’s figures. Utilities and maintenance savings need to be added separately.
Calculator note: The current tool uses monthly compounding and a U.S.-style PMI assumption for down payments below 20%. It does not calculate Canadian mortgage default insurance. Its results are illustrative, not a Canadian lender quote.
What belongs in your monthly homeownership budget?
1. Mortgage principal and interest
Start with the payment confirmed by your lender or mortgage broker. The amount depends on the mortgage balance, rate, payment frequency, amortization and contract terms.
Include the full payment in your cash-flow budget. Although the principal portion reduces your debt, that money still leaves your bank account.
Also separate the mortgage term from the amortization period. A payment available today should not be treated as a promise that financing costs will remain unchanged for the entire time you own the home.
2. Property taxes
For an existing Ottawa property, request the current tax bill and confirm what it covers. Divide the annual amount by 12 for budgeting, even if you pay it on another schedule.
Do not assume the purchase price is the assessed value used for tax calculations. The City of Ottawa’s property tax estimator uses assessment information and applicable service categories. It provides an estimate, not confirmation of the property’s actual bill.
For a newly built home, ask whether the available tax information reflects the completed property. Have your lawyer explain relevant adjustments or outstanding issues before closing.
If your lender collects property taxes with your mortgage payment, avoid counting those taxes twice.
3. Home insurance
Get an insurance quote for the specific property before treating your budget as complete. Confirm coverage, deductibles and any property conditions that affect the quote.
For a condominium, investigate the unit-owner coverage you need rather than assuming the corporation’s insurance covers everything.
4. Utilities and recurring services
Include electricity, heating, water and sewer where applicable, internet, and any equipment rentals or service contracts you would assume.
Ask for available utility history, ideally covering a full year. Treat it as a reference rather than a guarantee, since occupancy, thermostat settings and usage will differ.
For an Ottawa home, winter heating and snow removal deserve attention. For a rural property, investigate well, septic, water-treatment and access-related costs as applicable.
5. Condo or association fees
Compare what the fees include before comparing the totals. If water or heating is included, do not add the same expense again elsewhere.
Condo fees support shared operating expenses and reserve-fund contributions. Special assessments can create additional obligations. Have your lawyer review the status certificate and relevant documents, and understand which maintenance responsibilities remain yours. The Condominium Authority of Ontario explains condo fees and finances.
A lower fee alone does not establish that a condominium will cost less to own.
6. Maintenance and replacement savings
A home can have a quiet month and an expensive year.
Build a maintenance plan around the property’s condition. Consider the roof, heating and cooling equipment, windows, appliances, drainage and other components you would be responsible for.
Rather than relying only on a percentage of the purchase price, identify likely work, obtain estimates and consider timing. A home inspection can help inform that process.
Money set aside for future repairs is a savings allocation, not necessarily a bill you pay that month. It still needs room in your budget.
A worked example: a $2,900 mortgage is not a $2,900 housing budget
The following figures are hypothetical planning assumptions, not Ottawa averages, insurance quotes or an estimate for a particular listing.
This example assumes a freehold home with no condo or association fees. It excludes closing costs, optional renovations and other household spending.
The additional allocation is $1,340 a month beyond the mortgage payment. Your figures may be higher or lower. The useful exercise is replacing each assumption with information about the home you are considering.
Keep closing costs separate
Your down payment and closing costs belong in a separate cash-to-close plan.
Inspection costs, legal fees, title insurance, property tax adjustments and applicable land transfer tax can affect the cash required for the purchase. Moving and immediate repairs also need their own allowances. The Financial Consumer Agency of Canada’s homebuying guidance explains the distinction between ongoing housing costs and upfront expenses.
Do not use every available dollar to complete the purchase and assume future maintenance can wait.
Compare homes using the same checklist
Whether you are considering Kanata, Orleans, Barrhaven or another Ottawa neighbourhood, use the same categories for every property.
Ask:
What are the confirmed mortgage payment, taxes and insurance costs?
Which utilities and services are included in any fees?
What repairs or replacements may be needed soon?
How would this location change commuting and transportation spending?
What cash would remain after closing?
Neighbourhood fit matters alongside the numbers. My Kanata neighbourhood guide explores some of the practical differences to consider in Ottawa’s west end.
Leave room for change
Before committing, test a less comfortable scenario. Could your household manage a higher payment at renewal, an insurance increase or an unexpected repair?
This is a personal budgeting exercise, separate from your lender’s qualification process. A mortgage approval does not account for every priority in your life.
The right housing budget should leave room for your other obligations, savings and the way you want to live.
Build your Ottawa home budget before you shop
Start with the Marshall & Company mortgage calculator, review its assumptions, and confirm financing with your lender. Then add the property-specific costs and maintenance allowance described above.
As an Ottawa real estate agent, I can help you compare properties, gather available cost information and identify questions to investigate before making an offer.
Contact Joel Marshall at Marshall & Company to discuss your home search and compare the complete picture behind the asking price.
Prepared November 5, 2026. Examples are illustrative. Confirm financing, insurance, taxes and legal requirements with the appropriate professionals.
