I know I need to give him back his security deposit minus any repairs within 21 days after he leaves, but is there anything else I need to beware of? 

From the seller's point of view we try to get as big as possible Earnest Money Deposit. 

The notice has to be sent as certified mail saying what exactly and when should it be dated, also how should the late fee be applied if the rent is usually deposited as a check ?

Appraisers generally speaking have a hard time giving ARVs to match market so soon. 

In particular, I try to match schools and general neighborhood "vibe".

What was the the post-closing but pre-construction investment (ie: engineers, deposit to contractors, building Dept fees etc)

I have a lease, deposit, BG check, etc.

@Destinie MarshallListing agents don't have the information readily available that investors want to see including leases, history of payments/deposits, etc.

Lots of nervous people waiting for that money to get deposited :)In closing (if you have read this far)...this whole deal had a little bit of everything...poor documentation, lots of back and forth with the sellers, bank issues, investor issues, and lots of personal issues including deaths in the family.

You cannot legally charge more but they are not due a discount either make sure you are at market rent but no pet rent or deposit.