Is there a way to directly get the exterior wall area in Rhino, and generally get the area of constructions based on their boundaries?
Hi @aladin, there are currently no commands to do this directly in Rhino, but you can do this inside Grasshopper.
There is also a workaround to use the Model Editor to do this if all the walls in your model are extruded.
Let me know which solutions fits you better and we should be able to help.