Yes, amakan houses can be expanded or remodeled. Because of their flexible and modular construction, it is relatively easy to add more rooms or living spaces. The process typically involves removing some of the walls or panels and adding new ones, as well as reinforcing the structure to support the additional weight. It is also possible to remodel or update the interior design of an amakan house by changing the flooring, wall finishes, and furniture. However, it is important to consult with an experienced architect or builder to ensure that any changes made to the amakan house are structurally sound and comply with local building codes.