If it is a DUI, it really isnt a big deal Id say.  A

I agree with @Tyler Work that STRs are hardly passive, but I also agree they ARE fun, and certainly a great source of income.Re: management percentage, I'd say a minimum of 20% for what you're offering.  

More than likely a person with a tattoo on their face won't pass at least one element of the background check, but it's foolish to even think of denying someone with say a tattoo on their bicep or ankle (unless the nature of the tattoo screams don't rent to me). 

Say, a bathroom outlet isn't GCFI.

Given your example above, would it make sense to say  - me and my tenant pay fair rent for the portion inhabited to say a joint account shared between my brother and I.

In the case of XOME for occupied homes, if the title search came back with say a utilitylien or a city lien and if it involves payment of $$ to clear the lien then the payment comes from hou(buyer) as opposed to seller paying for it.

They say a study done by a construction engineer is generally more reliable than a study done by someone with no engineering experience. 

This is slightly different than taxes per say, as my CPA will do different things with the numbers than we do with the P&L.

If I have an expense that's only related to one property, say a utility bill, than I can expense it under that LLC.

I would say a 15-20 dollar book by an expert is the best place to start though for accurate information.That being said, these are helpful:Tax-Saving Strategies for Real Estate Investors: How to Pay Less & Keep More This Year5 Clever (& Legal) Tax Strategies to Save Real Estate Investors MoneyAlso browse this Forum: Tax, Legal Issues, Contracts, Self-Directed IRA for existing strategies posted.Hope that helps!