(a) This title does not apply to a transaction of:
(1) the United States or an instrumentality of the United States; or
(2) a state or an instrumentality or political subdivision of a state.
(b) A county or municipal corporation of the State may not:
(1) require a person to get authorization to do business performing or selling a home improvement; or
(2) regulate the qualifications necessary to do that business.
(c) This title does not limit the power of a county or municipal corporation:
(1) to regulate the character, performance, or quality of a home improvement by having a system of inspections and permits designed to:
(i) ensure compliance with and help to enforce applicable State and local building laws; or
(ii) enforce other laws necessary to protect the public health and safety; or
(2) to adopt a system of inspections and permits that requires:
(i) submission to and approval by the county or municipal corporation of plans and specifications for an installation, before construction of the installation begins; and
(ii) inspection of work done.