Cap Rate, ROI, and Capital Gains: Learn to Read Key Metrics Before Investing (explained in plain English)
Imagine you are about to buy a car. You wouldn’t just look at how nice it looks; you’d want to know how much gas it uses, its current market value, and what it might be worth in a few years.
The same applies to real estate: it’s not enough to just like the property; you need to know if it’s a good investment.
At Onix Living, we believe that a smart investment starts with real data and total transparency. That is why we always show our clients clear figures, based on signed contracts and backed by reliable sources.
Today we are going to explain, in plain English, three concepts that will help you make the best decision for your next investment: Cap Rate, ROI, and Capital Gains, with real examples from our developments.
1. Cap Rate (Capitalization Rate)
What it is:
The Cap Rate measures the annual profitability of a property solely based on the rental income it generates, without considering whether the value goes up or down. It’s like asking: “If I buy it, how much will it earn me per year?”
Formula:
(Annual net rental income ÷ Purchase price) × 100
Real example (Onix Living Development – Aldea Savia):
Vacation rental (Airbnb/Booking)
Average annual rate: $2,200/night
Occupancy: 60% (219 nights per year)
Annual net income: $340,000
Cap Rate: 10%
Long-term rental
Monthly rent: $22,000
Occupancy: 100%
Annual net income: $237,600
Cap Rate: 7%
Market references (source: JP Morgan Mexico):
| Cap Rate | Interpretation |
|---|---|
| 4% or less | Low, unprofitable market |
| 5% – 8% | Healthy / standard |
| 9% or more | Winner: strong market or optimized strategy |
Comparison with CETES (source: Banxico, 2025):
1-year CETES: ≈ 10% gross annual
Onix Living Cap Rate (vacation): 10% net annual
Key difference: CETES is fixed and secure, but does not generate capital gains; an Onix Living property combines profitability with growth in value.
Why it matters:
If you are looking for steady income, the Cap Rate is your compass. And if it is higher than what CETES or a secure bank investment offers, you are looking at a property with high potential.
2. ROI (Return on Investment)
What it is:
ROI is the full picture: it adds the rental income you earn plus the capital gains (the increase in value) and compares it to what you invested.
Formula:
((Rental profit + Capital gains profit) ÷ Initial investment) × 100
Real example (Onix Living Development – Aldea Savia, 3-year vacation scenario):
Accumulated rents: $1,020,000
Estimated capital gains: $886,000 (8% annual)
Total profit: $1,906,000
ROI: 56% in 3 years
Market references (source: JP Morgan Mexico):
| Accumulated ROI (3 years) | Interpretation |
|---|---|
| 20% – 35% | Correct, safe investment |
| 36% – 50% | Healthy, good performance |
| 51% or more | Winner: outstanding investment |
A friend’s recommendation:
Before buying, make sure the developer truly knows what they are talking about and can show you real numbers, not just pretty promises.
In the real estate market, a consistent annual ROI of more than 20% is uncommon.
If someone offers you a “guaranteed ROI” of 30% or more per year, stop and ask them to explain step-by-step how they calculate it.
At Onix Living, our projections are backed by signed contracts and historical results, not by unrealistic estimates.
3. Capital Gains
What it is:
It is the increase in a property’s value over time thanks to its location, demand, and the development of the area.
Formula:
((Sale value – Purchase value) ÷ Purchase value) × 100
Real examples (Onix Living – Aldea Savia, based on signed contracts, accumulated capital gains):
Phase 1 Apartment (2019 → 2025)
Purchase price: $1,500,000
Current price: $2,345,000
Increase: +56.33% total
Annual average: 9.39%
Tamay House (2019 → 2025)
Purchase price: $2,900,000
Current price: $4,800,000
Increase: +65.52% total
Annual average: 10.9%
Market references:
| Annual capital gains | Interpretation |
|---|---|
| 3% – 5% | Average in many cities |
| 6% – 8% | Healthy, area with potential |
| 9% or more | Winner: area in full growth |
Why it matters:
Capital gains are like compound interest in real estate: your property gains value without you having to lift a finger. And at Onix Living, our percentages are accumulated and backed by signed contracts, not by desktop projections.
Onix Tip
Now that you know what Cap Rate, ROI, and Capital Gains are, you have three compasses to evaluate any real estate investment.
At Onix Living, we believe in certainty and transparency, which is why all our data comes from real operations, with documents to back them up.
The next time you are offered a property, ask them:
What is the Cap Rate and how do you calculate it?
What ROI do you project and what data is it based on?
What has been the real capital gain in recent years?
With us, those answers will always be clear, with verifiable figures and a track record that supports them.
