Your relationship with a CC means nothing to a bank except credit score-very different businesses. 

An LLC is used for business related assets.A house-hack is a partially personal / partially business related assetAn LLC is normally best when personal and business are not 'comingled'best to talk to an attorney to see if you will get the asset protection you are looking for.

If you can't treat this like a business and get rid of bad renters, then I recommend you hire someone to do it for you. 

They give you discounts on West Elm, Pottery Barn, etc and a membership is free if you have a business.  

@Summer Dechanukul if someone can't say they have been deceived by a contractor or someone else in business then they haven't done much business.

I just personally do not think that is a good way to do business.

That is cool, but for those running a business at any level of scale, not of any significant importance.

I see many first time investors make the mistake of buying in a college town, but not where the students want to live.Business Sprints - You work like a lion in this business.

We also have a lot of "one-and-a-half" plexes (not an official name) - which are converted SF using the back staircase to to get to a studio apartment updstairs.

My business partner and I are considering starting a real estate consulting practice where we would advise buyers, sellers and investors on the buying and selling process.