You can check vacancy rates, property taxes, ARV, rehab costs, and days on market.

Short answer is as little as possible.The long answer is it depends on the deal.Typically you end up in a subject 2 situation when the current owner has little or no equity in the property, the current advantage of subject 2 properties is that most mortgages are below current market rates.Keep in mind when acquiring a property subject 2, in most instances you are not notifying the current lender of the change in ownership, and most if not all mortgages have a due on sale clause, which is the lender's decision if they want to enforce it or not.I personally like the idea its a great way to get investment properties with low rate loans, that with most likely appreciate in the coming years.

Hi Arthur,Sounds like you're building great momentum!

GetREFM is a great place also to learn about building different types of models.  

It's great to see you taking the first steps into real estate investing.

Do your research and find an experienced Realtor to list your property (someone with 10+ years experience in the same brokerage).Great advice Nathan, I’ll keep this in mind! 

A great resource is www.ascsp.org, where you can find certified firms.

We’re in the same process and having seen several quotes the spectrum can vary greatly. 

Doorloop is also a great management software.

I have looked at software like Hospitable and it looks great except it does not integrate with Furnished Finder.