Energy Renovation and Relaxed Rules Are Reshaping the Belgian Property Market

The Belgian property market is undergoing a profound transformation in 2025, driven by the relaxed renovation obligation introduced in Belgium this year. Both regulatory changes and financial measures are creating a completely different landscape for home buyers, sellers and investors. While the energy renovation of existing properties is becoming ever more central, eased EPC requirements and lower registration taxes are injecting more momentum into the market than many had anticipated. For anyone looking to buy, sell or renovate a property, understanding these changes is essential.

The relaxed renovation obligation in Belgium 2025: what is changing?

Since January 2023, Flanders has required buyers of properties with a low energy label to carry out renovations. That rule has, however, undergone a significant change. Anyone who purchases a house or apartment with an EPC label E or F now has six years - rather than five - to renovate it to at least EPC label D.

This is, however, only one side of the story. The Flemish government under Minister-President Diependaele (N-VA) has scrapped the original, far more ambitious targets. Where the requirements were previously expected to increase step by step to label C (by 2028), label B (by 2035) and ultimately label A (by 2045), the target is now permanently set at label D.

For investors and buyers of older properties, this is a welcome lowering of the bar. The extended six-year timeframe offers greater flexibility for financial planning, and the removal of the stricter long-term targets makes purchasing energy-hungry properties more financially attractive. The mandatory energy performance renovation pathway that would have caused considerable headaches for many property investors has also been dropped.

Which properties fall under the obligation?

It is important to note that the renovation obligation applies exclusively to residential buildings - houses and apartments - that are acquired as the sole property in full ownership. Certain exceptions apply: inheritances, divorces, notarial transfers with declaratory effect, and mergers or splits fall outside the scheme.

Owners who already had a renovation obligation before a new owner took over the property are not exempt, however. The obligation passes to the next owner.

Regional differences: an advantage for first-time buyers in Wallonia

While the relaxation of the renovation obligation applies to all Belgian regions, the regional differences in registration taxes are becoming increasingly interesting in 2025. In Wallonia, the introduction of a reduced rate of 3% for the purchase of a first owner-occupied home - compared with the standard 12.5% - triggered a genuine boom in property transactions.

The first nine months of 2025 produced striking figures: house prices in Wallonia rose by 12.9%, a record that left Flanders (+2.4%) and Brussels (+1.2%) far behind. This remarkable increase is largely attributable to buyers who had been waiting for this reduction in registration taxes, combined with higher-quality properties now coming onto the market.

In Flanders, the measures went even further. From 1 January 2025, first-time buyers purchasing their first family home pay only 2% registration tax - down from 3%. While this may seem less dramatic than Wallonia's 3% rate, it should be noted that Flemish property prices are on average higher. A saving of 1% on an average house priced at €300,000 already represents €3,000 less in administrative costs - money that can be put directly towards renovation or other housing expenses.

Brussels has not followed this path. Registration tax rates in the capital remained unchanged, and the market there shows more hesitation.

The mortgage market stabilises: favourable conditions for home buyers

Although registration taxes represent a significant cost, it is ultimately the mortgage interest rate that determines whether a purchase is achievable. In October 2025, the mortgage rate on a 5-year fixed contract reached its lowest point of 3.14%, while 10-year fixed-rate contracts hovered around 3.42%. These levels are substantially lower than the peak of 3.9% that still applied in 2023.

For 2025, experts had initially speculated on further drops. The actual evolution turned out to be more nuanced: despite ECB rate cuts, the long-term mortgage rate remained relatively stable, largely due to international factors such as US trade policy. Even so, families working towards a home purchase can now plan with more confidence than two years ago, thanks to the combination of stable - and historically moderate - interest rates and improved purchasing power driven by wage growth and indexation.

Belfius Strategic Research forecasts that unemployment in Belgium will remain at a historically low level, with more new jobs being created than lost. This gives employees greater bargaining power and increases confidence in long-term financing.

Energy quality as a value driver in the market

Paradoxically, the relaxation of the renovation obligation is generating increased demand for energy-efficient homes with better EPC labels. When buyers are no longer faced with extremely costly renovations to move from E to D, they more readily look at homes that already carry a D, C or even B label.

This phenomenon is clearly visible in the transaction patterns of 2025. Houses are rising more strongly in price than apartments - a trend that runs directly counter to the stagnation seen in apartment prices. Young families prefer a house that needs only light renovation over an apartment that also requires a great deal of work.

The new-build market under pressure

New-build tells a different story. Despite stricter energy standards (a maximum E-level of E30 for new construction), many households can no longer afford a new home. Roel Helgers, market economist at Matexi, speaks of a "perfect storm": rising construction costs combined with mortgage rates that are still historically high compared with pre-2022 levels. This threatens to disadvantage young families and vulnerable groups in particular, since the new-build market has traditionally offered more affordable options.

Sector implications: renovation grants as a counterweight

To lower the financial barrier of mandatory renovations, all Belgian regions have introduced renovation grants. In Flanders these grants are income-dependent, with higher percentages for low- and middle-income households. In Wallonia, however, the grant system is undergoing sweeping reforms: from 2026 the system will be overhauled, with initially lower maximum reimbursement percentages - down from 90% to 50-70% in 2025.

For buyers of energy-hungry properties, it is essential to thoroughly research available grants before completing a purchase. A property nominally priced at €200,000 with an E label can end up having a significantly lower net cost after energy renovation, thanks to grants. For first-time buyers, this difference can sometimes be decisive.

Regional markets: Flanders versus Wallonia

The figures clearly show that the two regions are evolving in very different ways. In the first quarter of 2025, the average house price in Flanders rose by 3.3% to €379,737, while Wallonia recorded an explosive increase of 17.8% to €281,069. This threefold difference reflects not so much a fundamental market shift as the tipping point at which Walloon buyers made widespread use of the reduced registration tax rate.

Prices rose in every Flemish province. Limburg led the way with +4.3% to €338,300, while West Flanders showed more modest growth of +1.2% to €335,408. This suggests that price increases are concentrated primarily in urban regions with strong employment.

The outlook: stabilisation after the initial boom

Now that the initial shock of the regulatory and registration tax changes has been absorbed, experts expect the Belgian market to trend towards normalisation. For 2025 as a whole, a price increase of 3-4% was anticipated, which is broadly in line with the actual evolution. At national level, the year-on-year increase stood at 3.6% in September 2025.

What does this mean for you?

For home owners, this is a favourable moment to sell - demand is robust, prices are rising and buyers are motivated.

For buyers, 2025 offers unique advantages: lower registration taxes (particularly in Flanders and Wallonia), stable - though not sharply falling - mortgage rates, and relaxed renovation requirements that lower the barrier for older properties. Caution is still warranted, however: the combination of rising property prices and relatively high mortgage rates remains a constraint for those with limited budgets.

For investors, energy-hungry properties are opening up as interesting opportunities. With six years and a D label as the sole target, systematic renovation can be profitable - especially now that the rental market is increasingly required to meet stricter energy standards.

Practical tips for this market

Anyone looking to buy or sell a property in 2025 would do well to keep the following steps in mind:

1. Check your EPC label
For buyers of a property with label E or F: plan your renovation budget realistically. With six years available, a phased approach is possible. For sellers: a better EPC label is a strong selling point.

2. Take advantage of lower registration taxes
In Flanders, the 2% scheme can save €2,500-€4,000 on an average house. In Wallonia, the 3% scheme is even more favourable. Check whether you meet all the conditions.

3. Compare estate agents and financing options
By comparing estate agents you can find the best professional for your market. At the same time, request a free valuation - this gives you a clear picture of the actual market value.

4. Simulate your loan conditions
Use our loan simulator to estimate your borrowing capacity given current interest rates and registration tax rates.

5. Research renovation grants early
Grants vary by region and by income bracket. Check before you buy, so that you can incorporate this financial support into your renovation plan.

Conclusion: a market on the move

The Belgian property market in 2025 is characterised by cautious recovery with underlying momentum. Against all expectations, the relaxed renovation obligation rules are driving stronger demand for energy-efficient homes - an interesting paradox. At the same time, registration taxes and mortgage rates are stabilising at levels that are manageable for the majority of buyers.

Whether you are selling at a favourable moment, buying for the first time as a first-time buyer, or looking as an investor for profitable renovation projects: information is power. The market is changing quickly, and those who stay up to date with regulations and transaction trends make better decisions.

Would you like to find a professional estate agent who truly understands this market dynamic? Or would you first like to determine your property's value to prepare for negotiations? Get in touch now via immomakelaarvergelijker.be - compare estate agents, request a free valuation, and set your next property purchase or sale in motion with confidence.