Are Zoopla price estimates accurate?
Statistical estimations must have large amounts of data to calculate an accurate average price at any one point in time. So to find out the true average price of a property in a given street you would need at least 30 properties to have sold in the last few months ... that doesn't happen!
This means no highly reliable figures exist at street level but they can do at postcode level - e.g. "N1".
However an average is just that, averages are in the middle which means there are more expensive, and cheaper, properties in that area. Knowing the average price of a house in postcode LU7 will not tell you whether the one you are looking at is expensive, or cheap.
As such their figures are not recommended as they can both overprice and under-price an area. They are no more than an advertising gimmick.