Hello everyone, lately, many friends have been talking about buying a house or moving to a new rental. A recurring question is: How much is this property actually worth?
Whether you’re a buyer wondering if a price is inflated, a tenant checking if the landlord’s asking price is fair, or simply curious about the market value of your own home, knowing how to check a property’s valuation is quite important. I did some research on this when I first came to Spain, so today I’m sharing the methods I’ve used, hoping it can help those in need.
Free Online Valuation Tools
For the average person, the most convenient and quickest way is to use the free valuation tools provided by major real estate portals. Their data is mainly based on their own listings and transaction records. While not equivalent to an official bank appraisal, it’s more than sufficient for a market reference.

The most commonly used platforms are Idealista and Fotocasa. The process is simple: go to their valuation page, enter the property’s detailed information such as its address, size, floor, number of rooms, and other details related to its Spanish property valuation. The system will then provide a valuation range based on big data. This result is a valuable reference, giving you a general idea of the average price in the property’s area.
Key Features of Major Valuation Platforms
| Platform Name | Pros | Things to Note |
| Idealista | Large database, frequent updates, most users, providing a broad reference range. | Valuations may be slightly skewed towards listing prices; best for understanding market trends. |
| Fotocasa | User-friendly interface, provides price trend graphs, more diverse analytical tools. | Its valuation algorithm differs slightly from Idealista’s; good for cross-referencing. |
| BBVA Valora | Backed by a bank, it analyzes nearby amenities and neighborhood conditions in addition to valuation. | Requires more detailed information; results reflect a banking perspective. |
A More Official Reference: The Cadastre
If you want a more ‘official’ reference price, you can check the website of the Spanish Directorate-General for Cadastre. Every property registered with the government has a unique cadastral reference number, which you can use to look up a lot of officially registered information, including its ‘cadastral value’.
It is important to note that this cadastral value is usually much lower than the market transaction price, as it is primarily used as a basis for calculating property taxes and other fees, and it is not updated very frequently. Therefore, you cannot use it to gauge the buying or selling price of a house, but it can serve as an absolute baseline for assessing the property’s value. If you can’t even find its cadastral information, the origin of the property might be questionable, and you should be extra cautious.
For everyday reference, cross-referencing Idealista and Fotocasa will give you a pretty accurate idea. However, when it comes to a formal purchase or mortgage application, the final word will always be the official appraisal report issued by a professional valuation company designated by the bank. I hope this information is helpful, and feel free to share any other useful methods you know!