§ 11-109. Municipal regulations. 1. Nothing in this article shall be
construed as abrogating or impairing the power of any municipality or
the secretary of state to enforce the provisions of any local building
regulations or the state uniform fire prevention and building code,
provided that such local building regulations are not inconsistent with
the code. Nor shall anything in this article be construed as abrogating
or impairing the power of any municipality to promulgate a local energy
conservation construction code more stringent than the code, including
but not limited to requirements for mandatory energy efficiency testing
and ratings.

2. Any municipality which adopts a local energy conservation
construction code in accordance with this section shall file a copy of
such code and any amendments or revisions thereof with the state fire
prevention and building code council within thirty days after
promulgation or adoption of such local code or any amendments or
revisions thereof. If the municipality files such copy within such
thirty day time period, the municipality may enforce such local code,
amendment or revision until and unless the state fire prevention and
building code council shall determine that such local code, amendment or
revision is not more restrictive than the code. If the municipality
fails to file such copy within such thirty day time period, the
municipality may not enforce such local code, amendment or revision
until and unless the state fire prevention and building code council
shall determine that such local code, amendment or revision is more
restrictive than the code.