Finding the ideal home in Belgium involves comparing data that most buyers discover too late. Energy Performance Certificate (EPC), post-purchase renovation obligations, price differences between provinces: these parameters weigh as heavily as the number of rooms or the size of the garden. This article measures the variables that truly influence a real estate purchase in Belgium in 2025-2026.
EPC in Belgium: the new renovation roadmap changes the game
Since September 1, 2026, every new EPC issued in Wallonia during a sale includes a personalized renovation roadmap. This document details priority works, expected energy gains, and an indicative price range excluding VAT for each step.
For a buyer, the change is tangible. Two houses with the same energy class can have very different renovation trajectories: roof insulation first in one case, heating system replacement in the other. The overall cost and logical order of interventions vary, which directly influences the total purchase budget.
Listings on habitations.be already allow filtering properties by energy performance, but this roadmap adds a layer of analysis that portals do not yet systematically display. Requesting the complete EPC before any visit prevents discovering an expensive renovation path after signing the preliminary agreement.
Renovation obligations after purchase: comparing Wallonia and Brussels
The rules differ by region, and these differences alter the financial calculation of a purchase. The table below summarizes the applicable constraints.
| Criterion | Wallonia (PACE) | Brussels |
|---|---|---|
| Mandatory renovation path | Yes, minimum EPC thresholds to be met within 5 years of purchase | Enhanced EPC requirements for rental |
| Reference document | Roadmap integrated into the EPC (since September 2026) | Classic EPC, minimum requirements for renting |
| Impact on purchase budget | Planned works in stages with price ranges | No structured path, but penalties for non-compliance with rental regulations |
| Sanctions | Fines for failing to meet thresholds within the stipulated time | Prohibition of rental below a certain EPC threshold |
In Wallonia, the PACE path imposes minimum EPC thresholds to be met within five years of acquisition. A buyer targeting an older house must incorporate these mandatory works into their financing plan, not just a vague intention to renovate.
In Brussels, the pressure is mainly on landlords. Minimum EPC requirements condition the right to rent a property. For a primary residence purchase, the constraint is less immediate, but it affects future resale value.
What this changes during a visit
During each visit, requesting the complete EPC (not just the classification letter) allows for assessing the actual acquisition cost. A house rated E with a structured renovation path in three stages may prove more predictable than a house rated D without a detailed diagnosis.
House sale prices in Belgium: disparities between provinces
The average price of a house in Belgium reached 346,648 euros on a national average in the first half of 2025, an increase of 5.1% compared to the previous period. This average masks very contrasting realities depending on the provinces.
Cities like Liège, Namur, and the province of Luxembourg are attracting more and more buyers, including French investors drawn by prices significantly lower than those in Île-de-France. In contrast, Brussels and Brabant Wallon remain the most expensive areas in the country.
For a buyer with a fixed budget, location not only determines the size of the property accessible but also the level of works to be anticipated. The cheapest houses are often located in municipalities where the housing stock is older, and therefore more energy-consuming. The intersection of purchase price and EPC class remains the most reliable calculation for estimating the total investment.
Notary fees and purchase deed: often underestimated costs
The purchase deed in Belgium goes through a single notary, chosen by the buyer. Their fees, regulated by the state, generally represent between 1% and 2% of the purchase price (plus VAT). In addition, there are registration fees, which vary by region.
- Registration fees constitute the heaviest cost after the price of the property itself. Their rate differs between Flanders, Wallonia, and Brussels, with possible reductions for the purchase of a primary residence.
- Mortgage research fees, mortgage registration, and transcription costs are added to the notary’s fees and are often discovered at the time of signing.
- The cost of the EPC and mandatory diagnostics (electricity, tank, soil in Wallonia) is borne by the seller, but a savvy buyer checks their validity before signing the sales agreement.
The total acquisition budget consistently exceeds the price displayed in the listing. Allowing for a margin of 10 to 15% above the sale price to cover all fees remains a common estimate in Belgian notarial practice.
New construction or old purchase: the energy calculation makes the difference
New construction offers energy performance tailored from delivery, without a renovation path to finance. However, the price per square meter is significantly higher, and construction delays add a period of budget uncertainty (material price increases, project delays).
Buying an older house in Belgium, coupled with the Walloon EPC roadmap, now allows for planning energy renovation in stages with predictable costs. This model suits buyers willing to spread investments over several years.
The choice between new and old is no longer just a matter of taste or location. EPC regulations transform this decision into a measurable financial arbitration, where each energy class corresponds to a documented compliance cost.
The Belgian real estate market in 2026 is read as much in energy certificates as in sales listings. A buyer who incorporates the mandatory renovation path, actual notary fees, and provincial price disparities into their budget has a decisive advantage over those who rely solely on the displayed price.
