Ind. Code § 25-4-1-17
The practice of architecture is the performance of professional services embracing the safe, healthful, scientific, aesthetic or orderly coordination of the planning, designing, erection, alteration or enlargement of any public or private building or buildings, structure or structures, project or projects, or any part thereof, or the equipment or utilities thereof or the accessories thereto, when such professional services require the application of the art and science of construction based upon the principles of mathematics, aesthetics, or the physical science acquired by education or training, and when such services are performed through the media of consultation, evaluation, investigation, preliminary study, plans, specifications, contract documents, or supervision of construction. Any one (1), or any combination of the foregoing services by a person shall constitute the practice of architecture. A building is any structure consisting of foundation, floors, walls, columns, girders, beams and roof, or a combination of any number of these parts, with or without other parts and appurtenances thereto.
IC 25-4-1-17