Clean it up a bit and rent it out at a potential loss or walk away. 

also you'll want to do a title search to make sure the title is clean.

If there is a room you can provide them or if you have a mgnt company they will clean the sheets.  

Now the difference I think in our market is we do title right up front instead of waiting to the back end of the deal to make sure you have clean title and the property can close..

If your rental is "just" an investment and you have no emotional attachment (like we do), I guess it would depend on the yard, and how much a full clean-up would be assuming the tenant did NO yardwork during their lease (worse care scenario).  

I routinely see retail centers in the 8+% cap rate.  

At the least expect an instrument clean from the Seller to the Buyer assigning the loan.  

I have a property in downtown Rochester where a building burned and have cleaned it out.  

You need that to cover any repairs or cleaning that the tenants would be responsible for (in case they don't take care of it).

It's just like any other part of the property - if tenants don't actually break it, it goes under "routine upkeep."2.