Terms used in this chapter mean:
(1) "Housing and redevelopment commission" or "commission" any housing and redevelopment commission created by or pursuant to the municipal housing and redevelopment law of this state;
(2) "Municipality" any incorporated city or town or any county;
(3) "Project" any work or undertaking of a housing and redevelopment commission pursuant to the municipal housing and redevelopment law;
(4) "State public body," any municipality, commission, district, or other political subdivision or instrumentality of this state, except the State of South Dakota.