Indiana Code Title 25. Professions and Occupations § 25-31-1-20

(1) on property owned or leased by that individual or business unless the engineering practice involves the public health or safety, or the health or safety of the employees of that individual or business;

(2) for the performance of engineering which relates solely to the design or fabrication of manufactured products;  or

(3) that is registered as a landscape architect under IC 25-4-2 and while the individual or business is engaged in the practice of landscape architecture planning the use of land or water.