A valuation reflects the property as it is today, but the agent can also estimate its value after planned works and tell you whether they are likely to pay off. Energy upgrades that lift the PEB rating and kitchen or bathroom refreshes tend to return the most in Wallonia.
A valuation values reality, not intentions, so the headline figure describes your home in its current state. That is the honest baseline. But a good agent does more than quote it: they can sketch the value after specific works, so you can decide whether to renovate before selling or sell as-is.
Not all works repay equally. In Wallonia the strongest lever is energy performance, because the PEB rating directly affects both price and demand. Moving a home off an F or G rating through insulation, glazing or a better heating system can add more to the sale price than the works cost, and it also lifts the pool of buyers who can borrow comfortably against future bills. Wallonia’s renovation grants (the Primes Habitation) can offset part of that spend, scaled by the works and household income (source: Certinergie / Lisa Energie 2026), improving the maths further.
Cosmetic works matter too, but with limits. A tired kitchen or bathroom drags on offers out of proportion to its real cost to fix, so a modest refresh often pays. The counter-intuitive trap is over-improving: gold-plating a home well beyond its street’s price level rarely returns the outlay, because the comparison method caps what nearby sales will support.
Bring your renovation plans to the visit. The agent can value the before and the after, and help you spend only where the market will reward you.
At a glance
| Planned work | Likely return in Wallonia |
|---|---|
| Energy upgrade (off F or G) | High, lifts price and buyer demand |
| Kitchen or bathroom refresh | Good, cures an outsized drag on offers |
| Redecoration and repairs | Moderate, improves first impressions |
| Layout improvements | Case by case, depends on demand |
| Over-improving for the street | Poor, comparables cap the uplift |
| Note | Primes Habitation grants can offset energy works |