It's pretty easy in Ohio to find out if and what bank owns the home, it's part of the public record here. If the bank has not foreclosed on the home, the home will still have the owners name, otherwise it will be under the banks name. Now not always easy to make contact with them as the one posting here said, it's a maze within their system. But the home will be listed with a realtor about 6 months or longer after the bank takes over.
If the issue is the grass needs to be cut or something like that, contact the city, they will mow it and bill whom ever the owner is at that time.