Nothing contained in this chapter shall be construed to prohibit practices normally permitted to employees, engineers, contractors, and others, including the following:

(1)  A draftsperson, student, superintendent, or other employee of a lawfully practicing registered architect acting under the instruction, responsible control, and supervision of his or her employer. This chapter does not prevent the employment of a superintendent of the construction, enlargement, or alteration of a building or part of a building who acts under the immediate responsible control of the registered architect by whom the plans and specifications of the building, enlargement, or alteration were prepared.

(2)  A registered professional engineer doing architectural work as may be incident to the practice of his or her engineering profession, not to exceed thirty-five thousand (35,000) cubic feet of enclosed space, provided all drawings for that construction are signed by the author of the drawing with his or her true appellation as a “registered professional engineer” without the use in any form of the title “architect.”

(3)  The construction or alteration of any single-family or two-family house or any minor accessory building to it by a person other than a registered architect.

(4)  The construction or alteration of any building used for farm purposes, as long as it is not for human habitation or occupancy, by a person other than a registered architect.