And how common is this approach? 

However Property tax's some of the lowest in the coutnry and property maintenance same thing if you buy a stucco home with a tile roof.No real major weather threats like many markets  IE hail storms wind storms etc.. can get windy but thats common.. 

With my experience with very wealthy individuals who have complete freedom of time, one common denominator is: Keep it simple and a little boring. 

There are a lot of issues with having JADU including finance issues if there is also an ADU, requirement for owner occupancy, that it removes space from the primary structure and usually lowering the value of the property such that it is common practice to remove the JADU when selling the property.  

Are there some lease terms that are common for commercial real estate that I should try to get included?

A well-defined mission aligns everyone’s efforts toward a common objective.

I am not a huge fan of the fee, but it seems common where I am located: Indianapolis.

@Barrett Dunigan That commonly happens about 90% of the thousands on the list 30 days before the sale, pay or make arrangements to pay and remove their property from the list. 

Common fees will include a set-up fee, a leasing fee for each turnover or a lease renewal fee, marking up maintenance, retaining late fees, and more.

They are not a very common sense structure, why are you thinking about building one if you don't mind my asking?