Investors & landlords

As stated in my post this is not a house, it is a commercial building. That said, maybe Rental Real Estate may be the correct first choice, but that takes me to 3 new choices: (1) Residential Real Estate, which it isn't so it can't be that (2) Appliances, Carpet & Furniture , which an HVAC system isn't (3) Land Improvements, which this also isn't. 

 #2 may be the closest possibility, but that takes me to more choices including residential items, condos, etc., none of which seem to be the correct category again.  This must be a common depreciable item for commercial properties, what is the correct choice?