Impermissible regulations.

A. No ordinance or regulation authorized by the Manufactured Housing and Zoning Act shall regulate the original construction of the manufactured home or mobile home. B. No ordinance or regulation otherwise authorized or permitted by the Manufactured Housing and Zoning Act shall be permissible or enforceable if it would have the direct or indirect effect of requiring that a multi-section manufactured home be installed in an excavated site in order to be included in a specific-use district in which site-built, single-family housing is allowed.