No one has provide any case history (probably because it varies by State), but, in short, using your personal name / ownership temporarily really looks like you are using the LLC as an “alter ego” of yourself this compromising your corporate veil.

I just had an applicant submit their background check and credit history through Zillow.

She is worried that if she sells and gets a lump sum, she will spend it foolishly (which her history indicated is a valid concern).

I even had one taxing authority argue with me at a protest hearing.

Well, before you go that route, just educate yourself on market history.

I am worried about running it through my business and then becoming less "bankable" to lenders when asking for a HELOC, loan, etc since I will not have had 2 years of rental history within my same account.

What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

Thank you I was also wondering if After i obtain my llc will i be able to get loans with no prior business credit history or do i first need to build my business credit history with credit cards? 

What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

In lay terms, the carrier/underwriter is there to apply rates to your account, review loss history, review market conditions, apply debits/credits to your account, and send the agent a quote.