Idealista now values your home using real deed prices
Idealista has added notarial deed prices to its property valuations. The gap with the listing price can be huge. 57 cities, a new paradigm.
English · Original discussion in Spanish · Published
Idealista launches valuations based on real deed prices
How much is your home really worth? For years, the answer has come from a tolerated fiction: what the owner asks for in the listing, not what the buyer ends up paying. Idealista has now made its move and started incorporating data from the Consejo General del Notariado (Spain's notaries' governing body) on completed sales into its valuation model: closing price, floor area and real price per square metre.
The gulf between the listing and the deed
A recent analysis of 57 cities confirms that homes were listed, on average, above the final sale price. The gap is not cosmetic. In the city of Valencia, one owner says his valuation jumped by 60,000 euros overnight and now exceeds what he paid for the flat in 2025 by 100,000 euros. He admits he bought well, but the leap shows just how far the catalogue price had drifted from reality.
The shadows of the new model
Not everyone is applauding. It remains to be seen how the under-the-table share affects the deed price, especially since the practice of declaring less than was actually paid is still around, with its corresponding fines. And the time lag needs clarifying: if a flat is negotiated at 87 when 100 is asked, when and how does that 87 reach the portal? The notarial route exists, but the timeline is unclear.
The move is, at the very least, an attempt to anchor prices to reality. The smoke of the listings will still be there, now only as a starting point. But there will be an uncomfortable comparison in plain sight.
How much is your home really worth? For years, the answer has come from a tolerated fiction: what the owner asks for in the listing, not what the buyer ends up paying. Idealista has now made its move and started incorporating data from the Consejo General del Notariado (Spain's notaries' governing body) on completed sales into its valuation model: closing price, floor area and real price per square metre.
The gulf between the listing and the deed
A recent analysis of 57 cities confirms that homes were listed, on average, above the final sale price. The gap is not cosmetic. In the city of Valencia, one owner says his valuation jumped by 60,000 euros overnight and now exceeds what he paid for the flat in 2025 by 100,000 euros. He admits he bought well, but the leap shows just how far the catalogue price had drifted from reality.
The shadows of the new model
Not everyone is applauding. It remains to be seen how the under-the-table share affects the deed price, especially since the practice of declaring less than was actually paid is still around, with its corresponding fines. And the time lag needs clarifying: if a flat is negotiated at 87 when 100 is asked, when and how does that 87 reach the portal? The notarial route exists, but the timeline is unclear.
The move is, at the very least, an attempt to anchor prices to reality. The smoke of the listings will still be there, now only as a starting point. But there will be an uncomfortable comparison in plain sight.
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Summary of a discussion on Burbuja.info - Foro de economía, actualidad y política., translated from Spanish and reviewed before publication. Read the full discussion (29 replies).
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