Google is not without its errors.

I used to work to resolve addressing disputes and google just doesn't expose (maybe even store) the relevant information for a lot of parcels of land.

It’s all available freely from the government in simple formats but for Joe Public they don’t know that much less how to access it and it’s the case that technicians on the ground don’t always have it in their SOP either. Google has a level of market dominance that means their errors can be, for a small individual or over an aggregation of small individuals, costly.