Its a reason why its known as one of the most shady industries(You can probably make a point for the banking and medical industry as well).

You typically get access to the gym, tennis courts, and dinning facilities. 

Industrial facilities are bound by more stringent building codes restrictions for fire safety.

And most states are cool with medical marijuana.Michigan voted for it and North Dakota against it.

Usually it's a category like 'retail', 'warehouse', 'medical', etc.Are there certain traits or characteristics for a building to be deemed medical?

I think that is why Google & Facebook are both spending hundreds of billions in the suburbs of Huntsville opening regional facilities.

A couple questions I brought up was how can we protect it for them loosing to insurance companies or medical (nursing home) with declining health?

Common areas include swimming pools, tennis courts, and other recreational facilities, as well as common corridors of buildings, parking areas, means of ingress and egress, etc.common lawAn unwritten body of law based on general custom in England and used to an extent in some states.community propertyIn some states, especially the southwest, property acquired by a married couple during their marriage is considered to be owned jointly, except under special circumstances.

The office unit is currently 1700 sq ft of built out medical office space.  5 exam rooms, all with sinks and cabinets, two nursing stations, with sinks and cabinets, waiting room, administrative/check in area, large provider's office, large handicapped bathroom, handicapped ramp, plus a very large room with half bath on the second floor, that could be used as administrative space, or office space or staff break room. 

They function like medical properties.