
A bungalow investment is worth it when its rental property cash flow, plus mortgage paydown and any long-term growth, beats what your money could earn elsewhere for the risk you take. To find out, total the rent, subtract vacancy and every operating cost, then subtract the mortgage. This guide walks you through each step with a simple worked example.
Key takeaways
- Cash flow is rent minus vacancy, operating costs and mortgage payments.
- Net operating income and cap rate let you compare properties before financing.
- Mortgage paydown adds to your return even when monthly cash flow is thin.
- Use real rent comparables and real quotes, not hopeful guesses.
Step 1: Estimate realistic rental income
Start with what similar units nearby actually rent for, not the highest listing you can find. For a bungalow, consider each unit separately:
- Main floor: bedrooms, updates, yard access and parking.
- Basement unit: ceiling height, light, separate entrance and whether it’s legal.
- Garden suite: if zoning allows one and you plan to build it.
Only count income from units that are legal or will be made legal. An unpermitted unit can create insurance, lending and safety problems.
Step 2: Subtract vacancy and operating expenses
No rental is full every month. Build in an allowance for turnover and vacancy. Then list every operating cost:
- Property tax
- Landlord insurance
- Utilities you pay, such as water or heat for shared systems
- Maintenance and repairs, plus a reserve for big items like the roof and furnace
- Property management, if you hire it
- Lawn care and snow removal
- Accounting and legal costs
Rent minus vacancy minus operating expenses equals your net operating income (NOI).
Step 3: Calculate cap rate and cash flow
| Measure | Formula | What it tells you |
|---|---|---|
| Net operating income | Rent − vacancy − operating expenses | What the property earns before financing |
| Cap rate | NOI ÷ purchase price | Compares properties regardless of financing |
| Cash flow | NOI − mortgage payments | What’s left in your pocket each year |
| Cash-on-cash return | Annual cash flow ÷ cash invested | Return on your down payment and closing costs |

A worked example: two-unit bungalow
The figures below are illustrative inputs to show the math. They are not market estimates. Replace each one with real rent comparables and quotes.

- Purchase price: $900,000, with 20% down ($180,000)
- Mortgage: $720,000 over 30 years at 4.5%, about $3,630 a month ($43,560 a year)
- Assumed rent for both units: $5,000 a month ($60,000 a year)
- Assumed vacancy allowance: one month’s rent ($5,000)
- Assumed operating expenses: $1,200 a month ($14,400 a year)
| Line | Annual amount |
|---|---|
| Rent | $60,000 |
| Less vacancy | −$5,000 |
| Less operating expenses | −$14,400 |
| Net operating income | $40,600 |
| Cap rate ($40,600 ÷ $900,000) | About 4.5% |
| Less mortgage payments | −$43,560 |
| Cash flow | About −$2,960 |
In this example, the property runs a small monthly shortfall of about $250. But the mortgage principal falls by roughly $11,700 in year one. So the investor’s equity still grows by about $8,700 before any change in value, which is roughly 4% on the cash invested once closing costs are included.
Bungalow tip: Small changes swing the result. A larger down payment, a lower purchase price or a legal third unit can turn a negative cash flow positive. Test each lever before you write an offer.
Step 4: Look at total return, not just cash flow
Your total return on a bungalow comes from four sources:
- Cash flow: positive or negative.
- Mortgage paydown: tenants help pay down your principal.
- Price change: values can rise or fall. As of August 2026, the GTA’s MLS HPI composite benchmark was down 4.5% from a year earlier.
- Value you add: renovations or new legal units that raise income and value.
Be careful about relying on price growth. If the deal only works when prices rise, it’s speculation, not investment.
Financing rules that affect the math
- Rental properties you won’t live in typically need at least 20% down.
- If you live in one unit and rent the other, you may qualify with a smaller down payment under standard insured rules.
- You must pass the stress test at the higher of your rate plus 2% or 5.25%.
- Lenders usually count only part of the rent toward qualifying.
Need flexible financing for a renovation project? Our guide to private mortgages for investors explains the options.
Frequently asked questions
What is a good cap rate for a rental property?
There’s no single target. Cap rates vary by location, property type and risk. Use them to compare similar properties, not as a pass-or-fail test.
Is negative cash flow ever acceptable?
Some investors accept a small shortfall in exchange for mortgage paydown and long-term potential. Make sure you can comfortably cover it for years, and talk to an accountant about the tax side.
Are bungalows better rentals than two-storey homes?
Bungalows often convert more easily into two legal units, which can improve cash flow. Two-storey homes may offer more living space for the price. Run the numbers on both.
How much should I budget for repairs on a rental bungalow?
It depends on the home’s age and condition. Get a thorough inspection, note the age of the roof, furnace and windows, and build a monthly reserve so big repairs don’t come as a shock.
The bottom line
A bungalow is worth it as an investment when real numbers, not hopes, support it. Calculate NOI, cap rate, cash flow and total return, and stress-test your assumptions. For the bigger picture, read is a bungalow a good investment, then browse investor-friendly bungalows for sale and run each one through this framework.
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