@Jim G.Per the International Residential Code if the glazing is less then 60 inches vertically from a standing or walking surface then yes it’s required to be safety glass as it’s considered a hazardous area.  

Specifically from the Caged AC Unit into the attic (concrete slab so no crawl space).I was thinking of just building a tall vertical box to place this into.  

Use the magnifying glass on Puerto Rico.  

It's a huge house with tall basement ceilings.

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The property has a massive 900+ sq ft attic with very tall ceilings that would make a perfect 3rd unit potentially grossing another $1000 per month. 

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Oh the pink and beige house with the tall concrete fence?").

Here are a few suggestions on how you can maximize the wealth of information available: Check out the blogs and podcasts, or take advantage of the search feature (magnifying glass).