Thanks all guys for the quick reply.
@c.poupin I think your reply is the best but it’s too over my actual level, I don’t know API.
Draxl_Andreas very interesting node, I try it, but if I’ve two room or ceiling with the same area that reports a mistake
@Daniel_Hurtubise I’ve been trying to find “Get all room location point” or “Get all ceilings geometry” but I didn’t found this node. Is necessary some external package?
i’ve found here Room Location Point
i could try to find the " *solid.centroid" of the Room