Name and title issues

[Robert Jenkins]

Ok so here's the skinny.

My client owns a building and a business under an LLC.

He always gets calls about this other building he supposedly owns.

I checked the title for this building and it is under his LLC name.

The company/person that pays taxes on the building is a different company named similar to my clients LLC.

So i want to know how does this get resolved. On all paperwork the property is under my clients LLC, but he doesn't pay the taxes cause it's actually owned by another company using his name.

I know for adverse possession he has to be paying the taxes, but what about a lawsuit or claim to the building?