They think real estate is simple, but just having a bad neighbour, or a bad tenant, or buying in the wrong building, can ruin the whole investment.And these are just the most obvious risks.. but there are lots of other things than can go wrong when investing in real estate. 

I hired a general contractor to take care of a leaking toilet that had ruined a couple of floor joists and that’s when things blew up.

That partially ruins the live in flip game...that is a big bummer. 

Here are the problems:1) if one just got built then that means more can be built and that ruins the whole business model of owning mobile home parks since the value is based on the complete lack of new construction.

New roof (don't want your new work getting ruined by water damage)2.

People like this are a cancer to our community.

I feel this is polluting the market - or at least ruining the plans for investors like me.Although mortgage IR at ~2.5% makes me think whether there’s still money to be made on rental?

And that first deal could either financially ruin you or it could be your catalyst to a long real estate investing journey.IV) Mountain biking

These are common scenarios that could ruin him financially. 

These types of partnerships, particularly when one or both parties are inexperienced, can often go wrong and ruin friendships so be careful there too.