Real estate simulator
Buy New or Existing Property
Compare the costs and gains of buying a new-build versus existing property, for your primary residence or a rental investment.
Your investment decision: New vs Old
Investment in new property offers the best cumulative net return over 15 years.
Final net return after 15 years
+€6,870With a new property investment, your final net return will be €42,216 compared to €35,346 in existing property.
New build
€42,216
Existing property
€35,346
Difference
+€6,870
Total cost
Fees and renovation included
Amount to finance
Down payment (€): €20,000
Monthly payment
20 Loan duration (years)
Total credit cost
3% interest rate
Total holding costs
Over 15 years
Resale value
1%/an growth
| Metric | New buildMost advantageous option | Existing property |
|---|---|---|
| Purchase price | €262,376 | €206,595 |
| Acquisition fees | €6,559 | €15,495 |
| Renovation works | €0 | €33,750 |
| Total cost | €268,935 | €255,840 |
| Amount to finance | €248,935 | €235,840 |
| Monthly payment | €1,381 | €1,308 |
| Loan interest | €76,404 | €72,384 |
| Interim interest | €9,889 | €0 |
| Total credit cost | €86,292 | €72,384 |
| HOA / Condo fees | €14,850 | €20,250 |
| Property taxes | €27,300 | €31,500 |
| Total holding costs | €42,150 | €51,750 |
| Resale value | €272,230 | €256,725 |
| Resale price - Purchase price | €9,855 | €50,130 |
| Tax reduction | €55,099 | €0 |
| Net rental income | €105,705 | €109,350 |
| Gain | €42,216 | €35,346 |
Big real estate questions decoded by data
Each chapter uses data to challenge conventional wisdom and give you the keys to make smarter decisions.
Notary fees for new build properties are reduced (approx. 2-3%) compared to 7-8% for existing ones.
It is a government-subsidized zero-interest loan for first-time buyers of a primary residence.
A tax incentive scheme reduces income tax when investing in new-build rental housing, based on a defined rate and commitment period.
Interim interest is interest paid during the construction phase before standard mortgage repayments begin.
Profitability combines capital gains, credit costs, holding expenses, rental income, and tax benefits.
Simulate and deepen every decision
The book details calculation methodologies, pitfalls to avoid, and provides dedicated simulators to quantify your property journey.
