Its quite irritating does this happen often?

I find it overwhelming and irritating that the program doesn't have like a beginners, intermediate advanced area. 

Also, if you get a negative IRR it means your cash flow didn't pay back the initial investment.12% IRR is a good return.  

There were broken water pipes, broken heat pipes, ceiling and floor damage, carpet damage, furniture damage, etc, costs $46,000.If they had hot air heat, they could have turned the water off and drained the lines and would have had little or no damage.We often use a plumber to winterize, they drain the lines and blow out all the lines with compressed air and put RV antifreeze, non toxic in all the drains and toilets.

There are many turnkey investments out there that I feel are toxic, so tons of research needs to be done. 

I could be wrong, but that's the assumption I use to make my decisions.As far as cash on hand, I typically assume I can make a 5% return for no risk / no effort (savings account) and around 12% for moderate risk, lots of effort (basically finding another property to buy that pencils at 15% irr).Now that we've got those two difficult assumptions out of the way, the question becomes, how do you calculate IRR?It's

I personally don’t want a toxic relationship in my Homes.

DEPARTMENT OF HEALTH AND HUMAN SERVICESAgency for Toxic Substances and Disease RegistryDivision of Community Health InvestigationsAtlanta, Georgia 30333http://www.atsdr.cdc.gov/drywall/docs/Drywall_HC_0...It states that the worst drywall was shipped in in 2005-2006 from china.

Obviously dont burn toxic stuff like plastic and rubber.

While higher free cash flow will boost IRR, it is not the only factor for returns.