How the guide value is made
Comparable listings
We look for houses or flats near you that are for sale right now. The closer they are and the more similar in size and age, the more they count.
A range, not false precision
You see the middle half of the prices of comparable listings and a guide value inside it. The condition moves it within the range.
Open about the limits
The basis is asking prices, not sale prices. If we know fewer than twelve comparable listings, we show no figure.
Questions about the valuation
What does the property valuation cost?
Nothing. It is free and needs no account. The calculation runs in your browser. We store your details only if you send us your contact details yourself at the end.
How accurate is the guide value?
It is a first orientation. In a test with about 2,800 listings (November 2026), the guide value was within about 17 per cent of the asking price for half of the flats and within about 19 per cent for half of the houses. Just under half of the listings lay inside their range. For individual properties the deviation can be much larger.
Does the guide value replace a professional appraisal?
No. For dividing an estate, a divorce, taxes or a mortgage you usually need an appraisal report or the bank’s own valuation. The guide value helps you put an asking price into context.
Why is there no guide value for building land?
Too few plots are listed publicly with a price, and their value depends heavily on zone and permitted density. With so few comparables a figure would not be reliable.