Owning your own home

^ Essentially, yes. The expanded version goes something like this:-

Zoopla just works off the land registry sold prices data; e.g. what the house in question has been sold for and when, and what the prices have done in the road/general area over the years.

Because it's just based off land registry sold prices data it can't take into account things like:

• the condition (sudden price increases due to revamp/modernisation)
  
• extensions and other improvements since the last sale
  
• properties sold off cheap due to other circumstances (split/divorce, etc)