Restoration is the process of rehabilitating damaged or demolished buildings or structures, with a focus on preserving their historical or cultural value. This includes repairing damage and restoring the original appearance of the building using traditional materials and original repair techniques.

Expansion refers to increasing the size, capacity, or functionality of a building or structure, usually by adding new elements or expanding existing ones to meet growth or changes in needs, while ensuring that the new design integrates with the original design.