The preset scenario planner shows common property types, but what if you want to compare two specific condos — say, a $1.8M 3-bedder in Punggol vs a $2.5M 2-bedder in Tiong Bahru? The Custom Scenario Planner lets you define every parameter yourself.
Build up to 5 fully customised investment scenarios with your own prices, rents, appreciation rates, and financing terms, then compare them all on one chart.
What This Calculator Does
Create fully customised property investment scenarios and compare them side by side. Unlike the preset comparison tool, this lets you define every parameter — price, rent, appreciation, rate, tenure — for each scenario. Perfect for comparing specific condos or investment strategies you are evaluating.
You can find this calculator in the Calculators tab on ShiokNest. It updates results instantly as you adjust inputs — no waiting, no page reloads.
Why This Matters
Generic preset comparisons use district-level averages, but the specific condos you are evaluating may differ significantly from the average. This calculator matters because:
- It lets you input exact prices, rents, and assumptions for the specific units you are comparing
- Two condos in the same district can have very different financial profiles
- Custom scenarios capture the real trade-offs in your actual shortlist, not hypothetical averages
What You Will Discover
After running this calculator with your personal numbers, you will know:
- Side-by-side ROI comparison for the specific condos you are evaluating
- Cash flow differences between your custom scenarios month by month
- Total return including capital appreciation and rental income for each option
- Which specific property is the better financial choice under your assumptions
Key Inputs Explained
Here are the inputs you will configure, along with their default values. Each default is calibrated to a realistic Singapore condo scenario so you can explore results immediately.
| Field | Description | Default Value |
|---|---|---|
| Purchase Price | The total property price before additional costs. | $1,500,000 |
| Floor Area (sqft) | The unit floor area in square feet. | 1,000 sqft |
| Holding Period (Years) | How long you plan to own the property. | 10 years |
| Annual Appreciation (%) | Expected yearly increase in property value. | 3.0% |
| Interest Rate (%) | Annual loan interest rate. | 3.5% |
Step-by-Step Guide
- 🏠 Navigate to Calculators — Click the "Calculators" tab in the ShiokNest navigation bar. All 26 calculators are grouped by purpose for easy access.
- 🔍 Select the calculator — Choose "How to Build Custom Scenario Comparisons" from the calculator list. You will see default values already loaded so you can explore immediately.
- ✏️ Enter your values — Replace the defaults with your own numbers. The key fields are:
- Purchase Price — The total property price before additional costs.
- Floor Area (sqft) — The unit floor area in square feet.
- Holding Period (Years) — How long you plan to own the property.
- Annual Appreciation (%) — Expected yearly increase in property value.
- Interest Rate (%) — Annual loan interest rate.
- 📊 Review the results — The calculator updates instantly as you change any input. Side-by-side comparison of custom scenarios showing ROI, cash flow, and total returns.
- 🔄 Run what-if scenarios — This is where the real power lies. Change one variable at a time to see its impact. For example, try increasing the interest rate by 1% or extending your holding period by 5 years. Note how the results shift.
- 💾 Compare and decide — Run 2-3 different scenarios and note the results. This gives you a range of outcomes to base your decision on, rather than relying on a single projection.
Worked Example
Meet the Tans, a couple comparing two specific condos they have shortlisted: a $1.4M unit at Parc Clematis (D05) and a $1.6M unit at The Myst (D23). They want to know which is the better investment over 10 years.
| Metric | Condo A (D05) | Condo B (D23) |
|---|---|---|
| Purchase Price | $1,400,000 | $1,600,000 |
| Monthly Rent | $3,800 | $4,200 |
| Est. Appreciation | 3.5%/yr | 3.0%/yr |
| Gross Yield | 3.26% | 3.15% |
The custom comparison: While Condo B commands higher rent, Condo A delivers a better gross yield and higher expected appreciation. The custom scenario planner calculates ROI, cash flow, and total return for each — using the exact prices, rents, and assumptions for these specific properties rather than generic district averages.
Why custom matters: The preset comparison tool uses district-level data. But two condos in the same district can have very different financials. The custom planner lets the Tans input their exact negotiated prices and agent-verified rents for a true apples-to-apples comparison.
Real-World Scenarios to Try
Here are some realistic scenarios you can plug into the calculator right now. Each one reflects a common situation Singapore property buyers face.
| Scenario | Settings to Try | What You Will Learn |
|---|---|---|
| Buy vs rent forever | $1.5M, $3,500 rent alt, 10 years, 3% apprec. | The cross-over year where buying wins and by how much |
| Short hold | $1.5M, $3,500 rent alt, 3 years, 2% apprec. | Whether a short holding period makes renting the smarter choice |
| High-appreciation market | $2.0M, $4,000 rent alt, 10 years, 5% apprec. | How a bullish market shifts the buy-vs-rent equation dramatically |
Expert Tips and Common Pitfalls
💡 Pro Tips
- Use realistic assumptions — Singapore condo appreciation has historically averaged 2-4% per year. Avoid overly optimistic projections. When in doubt, use 3% as a baseline.
- Use consistent assumptions — When comparing two condos, keep the interest rate, tenure, and expense ratio the same so you isolate the property differences.
- Compare like-for-like — A 2-bedroom vs a 3-bedroom comparison is not apples-to-apples. Match unit types or adjust for size differences.
- Adjust for location — Two condos at the same PSF in different locations will have very different appreciation and rental demand. Factor this in.
⚠️ Common Pitfalls
- Cherry-picking favourable assumptions — It is easy to make any condo look good by using optimistic rent and appreciation. Keep both scenarios on equal footing.
- Ignoring qualitative factors — Numbers cannot capture school proximity, MRT convenience, or unit facing. Use this as one input, not the final answer.
🤔 What-If Scenarios to Explore
Get the most value from this calculator by testing these scenarios:
- Compare two specific condos you are evaluating — enter their exact prices, areas, and expected rents.
- Test a "high rent, low appreciation" vs "low rent, high appreciation" strategy.
- Compare buying a 1-bedder vs a 2-bedder in the same development.
- Run at least 3 scenarios — best case, base case, and worst case — to understand the full range of outcomes.
Related Calculators
Your property journey involves many interconnected decisions. These calculators work hand-in-hand with this one:
- How to Compare Investment Types Side by Side
- How to Use the End-to-End Investment Calculator
- How to Calculate Buy-to-Rent ROI
Ready to Crunch Your Numbers?
Enter the details of the specific condos you are comparing — price, rent, appreciation, and loan terms. Get a true side-by-side analysis tailored to your actual shortlist.
This how-to guide is auto-generated using ShiokNest's calculator defaults. All worked examples use default values — adjust inputs to match your personal scenario for accurate results.