A. Just send us an email and we can verify whether it's available. Often a designer is willing to change the house plans for you, but we need to contact him to obtain a quote for the modification. If it's not available, you should also check with your builder. Often, changing a foundation type is a very simple matter and can be done during construction without modifying the drawing. If your building department requires drawings that describe the exact foundation you are planning to use and it is not available from the original designer, you also have the option of purchasing either the reproducible plan set or the CAD-file version (if available), and hire a local designer to make the changes for you.