The following words and phrases when used in this article shall have the following meanings:
Any industrial, commercial or other business property owned by an individual, association, or corporation, and located in a deteriorating area, as hereinafter provided, or any such property which has been the subject of an order by a government agency requiring the unit to be vacated, condemned or demolished by reason of noncompliance with laws, ordinance, or regulations.
Repair, construction or reconstruction including alterations and additions having the effect of rehabilitating a deteriorated property so that it becomes habitable or attains higher standards of safety, health, economic use or amenity, or is brought into compliance with laws, ordinances, or regulations governing such standards. Ordinary upkeep and maintenance shall not be deemed an improvement.