Check out their backgrounds.  

That being said I am required to disclose if I own any percentage of anything, and I have to do a financial disclosure annually not to mention a background investigation every so often.

In previous purchases I've done, something always changes... and the costs always go up.  3) He and his underwriters finished processing my loan literally 2.5 weeks prior to the closing date -- no extra questions, no extra background checks, no having to pull up bank records while sitting at the closing table, no nothing.  

Would you require a separate rental application, background, eviction, and credit check with references, etc?

Just to give some background, I've been lurking around on BP and other sites for nearly 7 years.

If it does investing outside of your mortgage dominates prepaying it.  

One real estate investing niche that grew out of that background was that I bought lots and land that FAILED the septic testing and were unbuildable. 

I recommend a full background check, credit check, rental and employment verification (at least 3x the rent income) as well as walk the current property that they live at.  

Eviction One does back ground checks on potential tenants for landlords.

I have not background on real state yet, had only bought an small property out of USA but Im want to learn more about this topic here.