Because agencies use different methods, different comparable sales, and sometimes different incentives. One may benchmark against fresher transactions; another may inflate the figure to win your signature. Ask each to show the comparables behind their number, and favour the honest market figure over the flattering one.
Two agencies, one house, two figures. It happens often, and the reasons fall into three groups: method, data and incentive. On method, one agency may lean on the comparison method with recent local sales while another weighs the property’s features differently, or reaches for capitalisation on a home that could be let. Different lenses produce different numbers even in good faith.
On data, the pool of comparable sales is never identical. One agent may have access to fresher transactions or interpret which sales are truly comparable more strictly. In a market that rose 15.4% on the median Walloon house in 2025 (source: Notaire.be / Fednot, February 2026), using sales from six months apart can move the figure noticeably. Assumptions about condition and the PEB rating add further honest variation.
The third reason is less comfortable: incentive. Some agencies quote a deliberately high figure to win the mandate, knowing they will push for price cuts later once the home sits unsold. The counter-intuitive advice is to be wary of the highest valuation, not attracted to it. An over-priced listing tends to linger, go stale, and eventually sell for less than a realistic price would have achieved.
The test is transparency. A trustworthy agency shows you the comparable sales, the PEB reading and the method behind the number. Easyhome’s independent, reputation-led model has no reason to buy your signature with a figure the market will not honour.
At a glance
Reasons two agencies disagree on value:
- Method differences: comparison, capitalisation or a different weighting of features.
- Comparable sales: fresher or more strictly chosen transactions shift the figure.
- Timing: in a fast market, sales months apart give different anchors.
- PEB and condition: differing assumptions about the energy label and finishes.
- Incentive: a high figure quoted to win the mandate, then cut later.
- How to judge: ask to see the comparables; trust the transparent figure.