Registers of Scotland is a non-ministerial government department responsible for compiling and maintaining public registers. These relate to land, property, and other legal documents.
They publish quarterly reports on trends and average house prices in Scotland.
Later in the process of buying your first house a fee is payable to Registers of Scotland through your solicitor.
Access to Recent Sold Prices can give you a useful guide as to the true price you may need to pay for a property on a particular street or postcode.
The data is added a few months after the sale to the online database, which is free to search, but can be a useful guide to what you will be more likely to pay for property in the area.