The biggest detail is look for a nationwide bank that is full delegated with little to No overlays.

We currently work with out of state investors and provide a full service approach which can be used by in state investors as well.When it comes to investing I'm currently in the process of closing on a partnered 4 Unit in Milwaukee WI.

There are companies such as Cover that offers a full service ADU deliverable from design through construction completion.

I highly suggest getting to some local meetup groups...here is BPs list:  https://www.biggerpockets.com/forums/521-real-estate-events-...I also have a full list of the chicago meetups that I can share with you too if that'd be helpful.

Some, like the last one we got in place, used a drive by estimate of value rather than a full interior appraisal.  

This would include adding another bedroom and making it a full 2 bath.

Then hire a handyman to put everything together.Rooms to go sells whole rooms full of furniture, sometimes at zero interest.

I haven’t had to list anything with a realtor which would be more like a commission of a full months rent.

(They did multiple inspections, also came for several full afternoons to just poke around the house while we were living there.) 

You can read the full story in our self storage post for that location.