Restoration of a Nonconforming Building or Structure. If any nonconforming structure shall be more than partially destroyed, then the structure may not be rebuilt, restored or repaired, except in conformity with this Chapter.
Destruction to the extent that rebuilding, repair or restoration requires removal or demolition of any remaining portions of the damaged part of the structure such that the only major components of the original structure utilized in such building, repair or restoration are the foundation or exterior walls shall be prima facie evidence that the structure has been more than partially destroyed.
Nothing in this Chapter shall prevent the strengthening or restoring of any portion of a structure which has been declared unsafe by the Construction Official.