It's FEMA that requires any project where over 50% of the original value is added (repair or renovation) will require the property to be built in accordance with the current building regulations, including FEMA elevation requirements (based on base flood elevation). 

An elevator?

Many people sleep on their sides to mimic the fetal position but the problem is you toss and turn because pressure is put on the shoulder.With a motorized bed you can elevate the legs which takes pressure off of the spine and back and with the upper body elevation you keep reflux from happening from the stomach into the throat which also helps the sinuses drain properly instead of pool and swell the turbinates at night causing congestion and difficulty breathing.The zero gravity position from a motorized bed mimics the fetal position but opens up the lungs for better breathing and keeps the acid down in the stomach plus since you are not on your side the pressure is not on the shoulders.When you first try it there is some getting used to as your body has been out of whack for so long.    

Make up an "Elevator speech".

If not a real estate career im considering nursing or elevator repair.  

I have a mountaintop property with almost 4000 feet of elevation at its crest, and I think it would be a good idea to generate some revenue while at the same time solving my service issue. 

I know it's gotta be fire rated like an stairwell or elevator shaft, but my local code office, always dysfunctional, changed to a perfect system (for them) where there's only voicemail and they never return calls.

Usually the tank is not the issue unless it has a crack or is otherwise broken.I assume it's not an elevated sand mound as those have only been around (in my area at least) for about 30 years.

With elevating PT, accumulating repairs etc your cashflow will become less and less attractive, until you decide to sell.

I eventually settled with an FHA insured loan at 30 years and let me tell you that those inspectors are picky.My home's first floor is under the base flood elevation.