Eichler architecture plans

Hello

We are Eichler fans and plan to buy an atrium style when we find the right one in a neighborhood we desire. About three months ago we saw an atrium style in Monte Sereno, CA and it had a pantry area behind the kitchen. I have never seen this before and it is a style I really liked.

I am trying to get the plans (even a basic drawing would be great) of this style. Does anyone know how I can go about this?

Thank you very much,
Robyn