After doing a web search, I wasn't able to find much information about invest1, or the properties they offer, which concerns me a bit honestly.  

Every day they should call their case manager, an inspector and a supervisor to advise them how important is that the unit is approved so they can be authorized to move in.

That makes them an agent selling something they have no legal authority to sell.

The trust then hires our management company to act as landlord and deal with tenants.Yes, tenants do have a right to know that their landlord is legitimate and that they are authorized to manage the property.But, that's it.It's all fun and games until an armed, pissed-off tenant shows up at the doorstep of your personal residence...

Learn more by setting aims, growing your friend net, and diving into sites like BiggerPockets and other web spots.

Maybe see if your local flood control authority or whoever at the city would want it and maybe pay a nominal amount for it.

Call the authorities, put him in prison and move on.

Why don't you contact the author of the book for a copy.

Doubling seems excessive unless they went from $500 to $1000. 

They take care of all the web stuff and I direct inquires and previous guest to my link.