Tenant Without A Lease

[Nick Grewe]

I am in the process of buying a duplex. While doing a home inspection, it became clear there was someone living in the upper unit. After asking the realtor it turns out the tenant is on a verbal agreement with the current owner and has no physical lease agreement. If closing comes and the tenant has not vacated, what can I do and not do to have them move out? I plan on living in the top and renovating the bottom at the same time.