It's really difficult to find cash flowing properties here in the Portland Metro area.

I can tell you that my most difficult or challenging thing is contractors.  

I have been wanting to acquire additional properties for quite some time but I find it just a tad bit more difficult searching from overseas.

Apartments and condos are more difficult to cash flow because of the monthly HOA dues. 

It is just on the new construction side, the lot costs are difficult to work around.Hope this helps

You are required to disclose, as well as use the registered name on all marketing material related to brokerage services, you may also want to have in writing a policy or agreement with your broker regarding compensation related to your wholesaling activity, I think you are getting into some difficult practices, be sure to have your ducks in a row

@Ivan Mendoza, it is increasingly difficult to find properties that fit the 1-2% rule in Colorado due to the strong seller's market we find ourselves in.

This makes it difficult for your tenant to pay his/her share of the utilities.

They don't need many jobs to put food on the table, so losing "difficult" customers like you is no big deal. 

It does get more and more difficult.