What is the best way to find vacant properties besides driving or flying in a helicopter over the city?

[Pavel Sakurets]

Hey guys, your help is greatly appreciated.

Does anyone now how to find vacant houses and addresses of the people who own them besides driving (which I think is a waste of time) or flying in a helicopter all over the town ?

My team contacted multiple cities (30-40) and only Minneapolis and St Paul have lists of vacant properties. But they do not provide mailing addresses of owners. And if you do a search for  a mailing address of a property owner, it shows the same mailing address as the vacant property's address.

Guys you rock! I solute to everyone that is in the biz of RE!