Your friend could also get a secured credit card, which is basically a debit/credit card associated with a checking or savings account.

I am unaware of any studies or reports that can prove the tankless will on average last 50%-100% longer than the standard tank.

Well for general considerations about whether to have an LLC for rental properties or not, check out-https://www.biggerpockets.com/renewsblog/2013/08/1...Read through the comments too as there's a lot of info in those too.One major comment would be, and an accountant or an entity specialist should bring this to your attention, is that rental properties and flips are two different things as far as taxes....passive income vs active income...and those should not be mixed under one LLC.

And he converted it to a 2 story, 4/5 bedroom, and 3 bathrooms with an added study.

My studies at my university are becoming less and less intense, meaning that I am able to dedicate more time to studying up on real estate practices and the habits of top agents.

What about lawn care/snow removal, pest control, legal, accounting, and other miscellaneous expenses.Are there other Rehab/repairs needed other than the ones mentioned?

I only just moved back and my [new] accountant is just sorting that out now.  

However, he did make some points that I took into account later.

Account Closed

There isn't any scientific study or stats that I know of.Merely pointing out the observation of my wife and I as we have been looking at properties over the last 4-5 years.