I was young and had a newborn, toddler, and fiancé.

I would hate to lose good tenants that meet the 650 minimum requirement, just because they are bringing an adult child with them who lacks a credit history. 

The cool thing about our house is that we built it on a vacant lot in 2017 and used Superior Walls and Modular construction to finish construction in four months while working a full time job and the wife being pregnant with our second child.

If it were mine (and I don't do student rentals but from a property management point of view).Maybe coach the (young inexperienced) renter about calling several times about the same thing--ants, etc..Ask to see a copy of her class scheduled for this semester.Confront her directly about the suspected Narcotics issues and advise her on your (and the Police Departments) policy regarding that.Come at the issue with a customer service attitude vs. an adult/child attitude, ie.

We are getting out of the newborn phase and trying to get back into investing again.

Hi Everyone,My name is Alex and I'm a new born when it comes to RE investing.  

It is only for eviction judgments, unpaid utilities or falling behind in child support that I generally turn them away. 

I ask a 1000 questions now about the owners, the property, bankruptcy, child support, liens, judgements, etc. and then I do a title search just to make sure.

Also have a newborn so sleep is a premium right now.  

And is each guarantor responsible for just their child and there half of the rent of the entire rent is the responsibility of both room mates/guarentours and whoever they want to split it and send it to me in one check is up to them.