For example: I never have a shortage of leads.

There is a SF housing shortage shaping up in the Dallas area.

There is a shortage of rentals so the rental market is very strong.

I thought you could make it so payment of fines were first and therefore any unpaid balance was a shortage in rent? 

There is no shortage of renters and if you have a well maintained product, you’re very likely to attract a qualified long term tenant.

Here is a recent article posted on the housing shortage and high demand for more,https://www.dispatch.com/story...

There is no water shortage here.Personally, I think all of the doomsday garbage is being promoted by people who want to put in desalination plants, and backed by the huge agriculture businesses here. 

I also see that there is a shortage of available places to stay in my area on AirBnB.

We have a massive shortage of housing relative to population and job growth.

There is a huge shortage of affordable student housing in the area and if I wanted she would market, interview and find a group of students to move in for a six month lease.