(a) Except as provided in subsection (b) of this section, this part applies only to the following governmental entities:
(1) a county;
(2) a municipality;
(3) a public corporation or other political subdivision of the State; or
(4) an instrumentality or agency of a county, public corporation, or other political subdivision of the State.
(b) This part does not apply to a housing authority under Division II of the Housing and Community Development Article.