(a) The practice of architecture solely as an officer or employee of the United States, but persons so engaged or employed shall not engage in the private practice of architecture in this state without first having a registration certificate as herein provided;

(b) Any person, firm or corporation that prepares plans and specifications for the erection of any buildings owned by the State of Mississippi, or any of its political subdivisions, containing less than ten thousand (10,000) square feet of ground floor area, and not exceeding two (2) stories in height; or any person, firm or corporation that supervises the erection of any such buildings; or to any person, firm or corporation that prepares plans and specifications for, or that supervises repairs, alterations or additions to such existing buildings; provided further that such person, firm or corporation does not in any manner represent himself or itself to be an architect, architectural designer, or employ some other title of profession or business using some form of the word architect;

(c) Contractors, superintendents, inspectors, foremen or building trades craftsmen while performing their customary duties;

(d) Professional engineers licensed by the Mississippi State Board of Registration for Professional Engineers and Land Surveyors practicing in compliance with the laws of this state;

(e) Professional landscape architects who are engaged in the preparation of drawings for and the supervision of planting, grading, walks, paving and appurtenances related to such work;

(f) City and regional planners or professional planners while advising, consulting, administering or performing professional work or planning services;

(g) Golf course architects who are engaged in the preparation of drawings and specifications and responsible supervision, including related consultation, investigation, reconnaissance, research and design, where the dominant purpose of such services is the design of a golf course, in accordance with accepted professional standards of public health and safety;

(h) Any person who prepares plans and specifications for, or supervises the erection, enlargement or alteration of:

(i) Any building on any farm for the use by any farmer;

(ii) Any one-family or two-family residence buildings, regardless of cost;

(iii) Any domestic outbuilding appurtenant to any one-family or two-family residence, regardless of cost; or

(iv) Any other type building which contains less than five thousand (5,000) square feet and is less than three (3) stories in height.