(a) This chapter does not apply to a person who does not represent that the person is an architect or architectural designer, or use another business or professional title that uses a form of the word “architect,” and who:
(1) engages in or is employed in the practice of architecture solely as an officer or employee of the United States;
(2) is a legally qualified architect residing in another state or country who:
(A) does not open or maintain an office in this state; and
(B) complies with the requirements of Subsection (b);
(3) prepares architectural plans and specifications for or observes or supervises the alteration of a building, unless the alteration involves a substantial structural or exitway change to the building; or
(4) prepares the architectural plans and specifications for or observes or supervises the construction, enlargement, or alteration of a privately owned building that is:
(A) a building used primarily for:
(i) farm, ranch, or agricultural purposes; or
(ii) storage of raw agricultural commodities;
(B) a single-family or dual-family dwelling or a building or appurtenance associated with the dwelling;
(C) a multifamily dwelling not exceeding a height of two stories and not exceeding 16 units per building;
(D) a commercial building that does not exceed a height of two stories or a square footage of 20,000 square feet; or
(E) a warehouse that has limited public access.
(b) A person described by Subsection (a)(2) who agrees to perform or represents that the person is able to perform a professional service involved in the practice of architecture may perform an architectural service in this state only if, in performing the service, the person:
(1) employs an architect who is a resident of this state as a consultant; or
(2) acts as a consultant of an architect in this state.