I understood why; the bathroom had very poor ventilation and a mold issue. 

Understood that amount includes utilities, correct?  

He understood that customers need to see something multiple times before they will buy.  

@John Warren understood!

I never understood the impact that lighting has on a large building until seeing the numbers.

Although I understood that this strategy could work financially, I was originally not keen on this idea.

He understood and will take care of it.What if he doesn't comply and I get fined for it?  

You have to understand keywords, roughly how Google chooses to rank sites (to the extent it can be understood), and how to make sure your site ranks for the proper terms.Think about it this way -- the only factor you're really enhancing by either iframing another site or redirecting to another site is the domain's age.

I've always understood the principal of being leveraged.

In my opinion, a large majority of the leases in use by property management firms are poorly written, do little to protect that landlords, and are not well understood by the property management companies.