Makes me wonder why more of them aren't making proper efforts to educate themselves on value and instead think that a house selling for say $250K is a great deal because it is much cheaper than houses where they are from.

Take ownership of your mistake and learn to do the proper due diligence recommended above😊

And from your previous post, I will be paying attention to the installation - we want those tiles oriented in proper direction.

That window may not have been installed properly.

The rest "should be" (if bought properly), paid for by someone or something else. 

Take ownership of your mistake and learn to do the proper due diligence recommended above😊

If so, make sure agreement is in writing, signed by both parties, specifies new end date and ensures any existing security deposit will still be dealt with properly per landlord/tenant laws, and I'd also ask for a partial payment to be issued at signing to make obtaining his new place easier.  

For newly constructed, purchased or renovated properties and also retroactive generally over the last 10 years, building components are properly classified into individual units of property and accurate recovery periods for computing depreciation deductions.

They also do not have a proper screening process for tenants.

Without having the facts it sounds like there was not proper notice to the estate.