The provisions of this chapter do not require any changes or
improvements to be made to lawfully existing structures. However,
when an improvement is made to any existing structure, the provisions
of § 702 shall apply.
No expansion or enlargement of an existing structure shall be allowed within any identified floodplain area that would cause any increase in the BFE. In A Area/District(s), BFEs are determined using the methodology in § 402, Subsection 1C.
Any modification, alteration, reconstruction, or improvement of any
kind to an existing structure, to an extent or amount of 50% or more
of its market value, shall constitute a substantial improvement and
shall be undertaken only in full compliance with the provisions of
this chapter.
The above activity shall also address the requirements of 34 Pa.
Code, as amended, and the 2009 IBC and the 2009 IRC, or most-recent
revision thereof adopted by the State of Pennsylvania.
Any modification, alteration, reconstruction, or improvement of any
kind to an existing structure, to an extent or amount of less than
50% of its market value, shall be elevated and/or floodproofed to
the greatest extent possible.
Any modification, alteration, reconstruction, or improvement of any
kind that meets the definition of "repetitive loss" shall be undertaken
only in full compliance with the provisions of this chapter.