Buying an income property is one of the most impactful financial decisions an investor can make. A building may look attractive on paper, but only a rigorous, number-based evaluation can determine whether it truly qualifies as a good deal. Here are the key metrics and factors to analyze before purchasing a rental property.
The cap rate measures the annual return generated by a property before financing. It reflects the pure performance of the building itself.
Cap Rate = Net Operating Income (NOI) ÷ Purchase Price
A higher cap rate usually indicates better return relative to the property’s price.
In the Greater Montreal area, cap rates for residential buildings typically range between 4% and 6%, depending on building condition, unit quality, and location.
The GRM shows how many years of gross rental income it would take to pay off the property if all income was used.
GRM = Purchase Price ÷ Gross Annual Rent
A lower GRM means the property generates stronger income relative to its cost.
In many Quebec markets, a GRM between 14 and 17 is considered typical for small to mid-size residential buildings.
Cashflow tells you how much money remains after paying all operating expenses and the mortgage.
Cashflow = NOI – Annual Mortgage Payments
Positive cashflow: the property pays for itself and generates surplus income
Break-even cashflow: the property pays for itself but produces no profit
Negative cashflow: the investor must inject additional money every month
Negative cashflow can be acceptable only if the building has strong future upside (rent increases, renovation value-add, or refinancing potential).
A property is only as good as its leases. Evaluating the rent roll in detail is essential.
Are the rents at market level or below?
Are annual rent increases properly applied?
Who pays for heating, electricity, hot water?
Are the tenants stable or is there a high turnover rate?
Are the leases properly written and compliant with provincial rules?
Are there additional income opportunities? (parking, pets, storage, hydro allocation)
Properties with below-market rents often have hidden potential and can become excellent investments through rent optimization.
Every building has a lifecycle, and older buildings come with higher risks and future costs.
Roof
Windows
Balconies and exterior staircases
Brickwork and joint repairs
Plumbing and main drain
Electrical panels and wiring
Heating systems
Parking lot and asphalt
A good deal on the purchase price can quickly evaporate if $200,000–$300,000 of deferred maintenance is waiting in the next few years.
Location affects rent levels, vacancy risks, tenant quality, building appreciation, and resale value.
Public transit access
Schools, hospitals, and services
Neighbourhood development plans
Crime rates
Median income level
Demand for rental units in the area
A strong location justifies paying more because long-term stability and appreciation are typically stronger.
Year built: 1989
Gross annual income: $188,000
Operating expenses: $44,000
Net Operating Income (NOI): $144,000
Asking price: $3,200,000
144,000 ÷ 3,200,000 = 4.5%
Interpretation:
This is within the normal market range but far from an exceptional bargain.
3,200,000 ÷ 188,000 = 17.02
Interpretation:
A GRM above 17 indicates a high price relative to the revenues.
Assumptions:
35% down payment
5.4% interest rate
25-year amortization
Estimated annual debt service: ≈ $148,000
Cashflow ≈ –$4,000 (negative)
Interpretation:
The property does not cover its mortgage under standard financing conditions.
Target a minimum cap rate of 5%.
Value at 5% cap rate:
144,000 ÷ 0.05 = $2,880,000
➡️ A realistic negotiation target: $2.75M to $2.90M
If rents are below market:
Apply annual increases
Improve turnover strategy
Add fees for parking, pets, or storage
Re-sign tenants with updated lease conditions
A 8–10% increase in revenues would raise the NOI above $155,000, instantly improving valuation and cashflow.
With CMHC:
Longer amortization (up to 35 years)
Lower interest rate
Annual mortgage payments could drop to $125,000–$130,000, turning the property into positive cashflow.
Optimize:
Insurance premiums
Landscaping/snow removal contracts
Utility allocation to tenants
Energy-efficient upgrades
Reducing expenses by even $5,000 annually strengthens the NOI and the property valuation.
At the asking price of $3.2M, the property:
Is not inherently bad
But is not an immediate financial win
And is priced above its economic value
It becomes a good deal only if:
The price is reduced to $2.8M–$2.9M,
OR
CMHC financing is used,
OR
There is strong potential for rent increases.
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