Understanding ROI: How to Evaluate a Property Investment

"What's the ROI?" is usually the first question asked and the least understood answer given. Here's what the numbers underneath that question actually mean, and how to check them yourself instead of taking a sales sheet's word for it.

Gross yield vs. net yield

Gross yield is the easy one:

Gross Yield = (Annual Rent ÷ Purchase Price) × 100

If a ₦50,000,000 unit rents for ₦500,000 a month (₦6,000,000/year), that's a 12% gross yield. Looks great — but it ignores every cost of actually owning the property.

Net yield subtracts those costs before you calculate the percentage:

Net Yield = ((Annual Rent − Annual Expenses) ÷ Purchase Price) × 100

Service charges, agency fees, maintenance, vacancy periods, and property management all come out of that top-line number. A property advertised at 12% gross can easily land at 7–8% net once real expenses are counted. Neither number is "wrong" — but only one of them is what actually lands in your account.

Break-even year

This is the year your cumulative return — rental income plus any appreciation — equals what you originally paid. It's a more honest single number than yield alone, because it accounts for how appreciation and rental income compound together over your holding period.

A property with a lower net yield but strong appreciation potential can break even faster than a higher-yield property in a stagnant area. Yield alone won't tell you that.

What actually moves these numbers

• Location relative to infrastructure. Proximity to the airport, business districts, and major roads (all factors we list on every property page) has a measurable effect on both rent achievable and resale appreciation.
• Unit mix. A development with a range of unit sizes gives you flexibility on who you're renting or reselling to.
• Construction quality and delivery timeline. Delays don't just cost you time — every month past your expected completion date is a month of holding costs with no rental income to offset them.

Run the numbers with your actual expected expenses, not the developer's most optimistic case. If the deal still works, it's a real deal.

Try it yourself

Our ROI calculator runs exactly this math — purchase price, monthly rent, annual expenses, appreciation rate, and holding period — and shows you gross yield, net yield, and break-even year side by side, with a year-by-year projection. Change any input and watch how sensitive your return actually is to it; that sensitivity is often more informative than the headline number itself.