BP does not have a function to let me add a link, nor add the BP money show I was also on. 

I'm not concerned about selling a home with a properly remediated sinkhole along with the appropriate engineering sign-off, my question is, does anyone know of an engineering firm or company that can further investigate the sinkhole to determine exactly where and how large?

Do a search of reviews or test each one out yourself to compare how they function.

How do you know they are getting the repairs done properly? 

There are so many good tools and websites out there but as a newbie out of state investor I always find this that or the other functionality lacking in every tool.

I guess my question was not worded properly.

Many people don't properly run LLC, so they have an illusion of security more than actual security.My best advice is have good liability coverage limits on your insurance.

IE you cant make a loan on a primary residence without full dodd frank and license .Now there are a few lenders in the Los Angeles Market that are properly licensed to do these loans.. but very rare any where else.check out these lenders.Lima oneLending homevisio Civic Dominion for what you describe a 10% apr could be had as long as your credit is decent.  

However, far to many new to investing get caught up in the need to form a team instead of finding a deal and get the ball rolling Having never been involved in any lawsuits in 30+ years is a function of doing things the right way for the most part.

Get a properly screened renter (thru a reputable property management company) who signs an annual rent agreement that pays you with ACH direct deposit monthly.