FWIW,
From the 2006 IBC, SECTION - 3408 MOVED STRUCTURES:
3408.1 Conformance.
Structures moved into or within the jurisdiction shall comply with the provisions of this
code for new structures.
From the 2006 IRC, R101.2 Scope.
The provisions of the International Residential Code for One- and Two-family
Dwellings shall apply to the construction, alteration, movement, enlargement,
replacement, repair, equipment, use and occupancy, location, removal and
demolition of detached one- and two-family dwellings and townhouses not more
than three stories above-grade in height with a separate means of egress and
their accessory structures.