Property as an Investment in Belgium: Returns, Risks and Strategy for Private Investors

Property as an investment in 2025: is it still worth it?

With savings rates hovering between 1 and 2% and inflation running at around 2.5 to 3%, cash savings are still slowly losing purchasing power in 2025. At the same time, mortgage rates are stabilising at around 3.3-3.8%, and property prices are rising again at an average of well over 3% per year. Against this backdrop, property investment in 2025 is once again gaining popularity among Belgian households.​

A recent Immoweb study compared the return on a property investment with that of the BEL20 index over 25 years. In 17 of the 30 municipalities studied, property generated more wealth than an equivalent investment in the Belgian stock index. In those municipalities, the wealth built up through property averaged 395,348 euros after 25 years - 15% more than through the stock market.​

Property is therefore not a guaranteed golden ticket, but it is a serious long-term option - provided you understand the risks and ground rules.

Why property investment is still attractive in 2025

1. Stable long-term returns

Belgian property has historically shown a relatively stable price trend, even in periods of economic uncertainty. Studies show that well-located properties hold their value and often record price increases that outpace inflation.​

A typical residential investment combines:

• Gross rental yield of 3 to 5% per year (depending on location and property type)
• Capital appreciation of the property, averaging around 2 to 3% per year over the past decades​

Net of costs and tax, the return often works out at 2.5 to 4% per year - with the potential for a capital gain on sale.

2. Protection against inflation

In an inflationary environment, both rents and property prices rise over the long term. Property therefore offers a natural hedge against the erosion of purchasing power. Your loan is repaid in euros that are worth less, while nominal rental income and the value of the property increase.​

3. The mortgage leverage effect

The key difference from many other investments is the leverage effect: you use borrowed capital (the bank's money) to finance a larger asset. Your own contribution is often only 20 to 30% of the purchase price, but you benefit from the increase in value and rental income on 100% of the property.​

Immoweb calculated that with 80% financing via a 20-year loan at 3.5%, a property investment in some municipalities overtakes the stock market in terms of accumulated wealth within 18 years. The return on your own contribution is multiplied by the leverage effect, as long as:​

• The rent covers the running costs and a large portion of the loan repayment
• The value of the property remains at least stable

Property vs. the stock market: what does the 25-year study tell us?

The Immoweb analysis compared, across 30 municipalities, the evolution of:

• Sale prices
• Rental prices
• The BEL20 index as a benchmark for Belgian equities​

Key findings:​

• In 17 of the 30 municipalities, property created more wealth than the BEL20.
• On average it took 18 years and 2 months for property to match the stock market in those municipalities.
• After 25 years, the wealth accumulated through property in those cities was 15% higher than through stock market investments.
• Notably, in 14 of the 19 Brussels municipalities, property outperformed the BEL20, making Brussels a particularly interesting investment market.
• In cities such as Ghent, Bruges, Ostend, Hasselt and Leuven, property returns over 25 years fell short of the BEL20, mainly due to less favourable rent-to-price ratios.​

The core message: property investment in 2025 performs best over the long term and in well-chosen locations with a healthy ratio between purchase price and potential rental income.

The main risks of property investment in 2025

No investment is risk-free. These are the main risks that characterise private property investments.​

1. Illiquidity

A house or apartment cannot be sold overnight. In a falling market or when local problems arise (oversupply, tighter regulations), it can take a long time to exit your investment without making significant price concessions.

2. Concentration risk

Many investors put all their available capital into a single property. If something goes wrong with that neighbourhood, that building or the local rental market, there is little diversification to fall back on. Stock market investments or real estate funds often offer better diversification.​

3. Regulatory and energy risk

Stricter energy performance certificate (EPC) requirements and potential future levies on energy-inefficient properties are a genuine risk. Properties with poor energy ratings lose value, while renovation obligations and additional costs put pressure on returns.​

Changes to registration duties or rental rules (indexation restrictions, point-based systems) can also affect net returns. Note that these rules differ between Belgium's three regions - Flanders, Wallonia and Brussels - so it is important to check the applicable regional legislation.​

4. Interest rate risk

An investment property is usually largely financed by a loan. Rising interest rates increase the monthly repayment and squeeze returns. After the sharp rise in 2022-2023, rates have admittedly stabilised, but they remain sensitive to inflation trends and ECB decisions.​

5. Vacancy and non-payment

No tenant means no rent. One year of vacancy or a tenant who stops paying can wipe out your annual result entirely, especially with a high level of financing. Professional rental management and rigorous tenant selection are therefore essential.

How do you calculate the real return?

Many investors look only at the ratio of annual rent / purchase price. That is the gross rental yield, but it paints an overly rosy picture. For a realistic figure, you need to deduct the following costs:

• Property tax (précompte immobilier / onroerende voorheffing)
• Second-home tax (where applicable)
• Insurance (fire, and optionally legal protection)
• Maintenance and repairs (on average 5 to 10% of the rent)
• Syndic fees and common charges (for apartments)
• Any management fees (estate agent, key management)
• Tax on rental income (depending on the type of rental and cadastral income)​

Only then do you arrive at the net rental yield. Combine this with a realistic estimate of annual capital appreciation (for example 1.5 to 2.5% per year) to get a clearer picture of your total return.

Strategies for smart property investment in 2025

1. Choose locations with a healthy rent-to-price ratio

According to the Immoweb study, it is not necessarily the most expensive cities that perform best, but rather the municipalities where the ratio between purchase price and rental income is healthy.​

Focus instead on:

• Cities with strong rental demand (university towns, economic centres)
• Peripheral municipalities around expensive cities (the Brussels and Flemish periphery) where properties are cheaper but rental demand remains solid​

A local estate agent knows the real rental market street by street. Via comparing estate agents, you can quickly find specialists in investment property.

2. Focus on energy-efficient properties or smart renovation

Properties with a good energy label (A or B) already command a premium on both sale price and rent, and are better positioned to handle future regulatory requirements. Two strategies:​

• Buying ready-to-rent A/B properties: higher entry price, but less renovation risk.
• Buying E/F properties cheaply and renovating them smartly to a D label or better, taking advantage of energy performance grants and higher rents after renovation.

In either case, a detailed cost-benefit analysis is essential.

3. Use leverage wisely

A loan-to-value (LTV) ratio of 70 to 80% balances leverage and risk:

• More leverage = higher potential return, but also greater vulnerability to vacancy or interest rate rises.
• Less leverage = smoother cash flow, but a lower ROI on your own contribution.​

Use a mortgage simulator to test different scenarios (varying interest rates, loan terms and personal contributions). Build in at least three months of rental reserve per year in your calculations to cover vacancy or unexpected costs.

4. Diversify within property

Do not concentrate on a single type of property or a single building:

• Consider combining residential property with limited exposure to indirect real estate (REITs, funds) to increase liquidity and diversification.​
• If you own multiple properties, spread them across different cities or segments (student flat, family apartment, small house in a peripheral municipality).

5. Set your investment horizon in advance

Property delivers its best returns from 10 years onwards. The Immoweb analysis shows that property only overtakes the BEL20 after an average of more than 18 years, even in the best-performing municipalities.​

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