Yes, changes can be made during the project execution. However, if the client requests numerous revisions, it may increase the overall cost of the work.
Concept Stage:
At this stage, significant changes can be made to the project concept, as this is the phase where the overall idea is being shaped.
Development Stage:
At this point, changes may be more limited since the project could be defined by several factors, such as space planning, material selection, etc.
Completion Stage:
At this stage, changes might be restricted due to ongoing construction work and final material choices.
Discussion with the Designer:
It's essential to openly discuss your preferences and changes with the designer throughout the process.