I discovered that not all work required permits in some areas. 

We recently discovered that you haven't paid it for two years and currently owe $1,100.

I would be happy to discuss this further or any other questions you have in the retail space.I definitely agree that its common to close yet still pay base rent, but you gotta negotiate that with the LL if you have an "open for business" requirement. 

Once the project started, we discovered that gas lines throughout the house were leaking (this is why you make sure utilities on!).

When reviewing the cash flow of properties, you discovered the cash flow was not feasible for a property, you could consider a 1031 Exchange to sell the property and replace it with a new property in the most tax efficient manner.

I just discovered the BP podcast this week and have been thoroughly enjoying listening. 

If disclosed after Acceptance, then you say something like, "I wrote an offer based on certain assumptions, yet it was later disclosed and discovered X,Y,Z.

I'm a newbie to CRE who has been living what I thought was a financial freedom / FIRE mentality but recently discovered Cash Flow Quadrant.

They can vary by state, county and even city.Here on the West coast it is only a matter of time before the tenant presents her/his lease for the LL to sign!!

You may discover that he's struggling financially.