He/She may not feel comfortable with the price/location/or time of year and will want to make sure they can get it rented out in a proper manner for you.

Or was the work done with permits and proper documentation?  

It's like they put a bunch of brand new shiny appliances in there and didn't bother to hook them up properly.

While you are waiting for that to happen, educate yourself on how to properly screen tenants and mitigate risk for when the bad ones sneak through.I use situations like this to educate myself and build policy to prevent the same problem from happening again.

Make sure you have the proper and legal documentation (use a title company).You could offer to buy (have assigned to you) the tax sale purchaser's position in the certificate, this puts you in the chain of title.

P E A C E !!

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The reality is that in every single case if the landlord had properly screened the applicant they would not have accepted them. 

If you are a realtor taking clients around, you want a decent, comfortable and reliable car but not one that may appear "flashy".I remember many years ago when the realtor husband of a friend of mine bought a new E-class and took clients to a showing, they began wondering about his "fees" and started to ask for a discount. 

Just have good insurance, and do things properly.