A valuation is only worth something if you understand where it comes from. Here is how our model calculates a price range, what data it draws on and what it does not claim to do.
Two regimes sit side by side, because Switzerland does not publish its sales the same way everywhere. In Geneva the land registry makes completed transfers public, so we know what buyers really paid, address by address. Elsewhere in French-speaking Switzerland no equivalent register is open.
In those cantons the price levels come from our own aggregated market observation, at commune level. That is a reading of the market rather than an average of signed contracts. The gap between the two regimes is real and we would rather show it: a Geneva page rests on harder ground than a Valais one.
The Swiss market has its own rules. Two neighbouring communes can show a thirty per cent gap because of taxation, access to the lake or transport links. Scarcity of supply weighs heavily in urban areas, and an open view carries a price. A generic model misses these effects, ours takes them in.
Each characteristic of the property is weighted according to its real bearing on the local price. Surface area and the number of rooms set the base, location, condition, floor and parking do the rest.
No online valuation can quote a price to the last franc without having seen the property. So we hand over a range, and its width reflects how much uncertainty there is: tighter where local data is plentiful, wider where comparable properties are scarce in the area.
The more precise the information provided, the tighter the range gets. An exact address, an accurate surface area and a stated renovation condition are worth more than an approximate entry.
An online valuation gives a solid basis for preparing a sale, talking to your bank or weighing up whether to keep or sell. It does not replace the visit of a professional, who alone can judge a hidden defect, a particular character or a nuisance that the data does not capture.
We see the valuation as a reliable, free starting point, not as a verdict. The decision stays in your hands.
An accurate range in two minutes, free of charge.
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