The provisions of this Part
2 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 §
133-43 shall apply.
The following provisions shall apply whenever any improvement
is made to an existing structure located within any identified floodplain
area:
A. No expansion or enlargement of an existing structure shall be allowed
within any floodway area that would cause any increase in the BFE.
B. No expansion or enlargement of an existing structure shall be allowed
within an AE Area/District that would, together with all other existing
and anticipated development, increase the BFE more than one foot at
any point.
C. 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 Part 2.
D. The above activity shall also address the requirements of the 34
Pa. Code, as amended, and the 2009 IBC and the 2009 IRC.