@Ronald Barendse Will investigate your last comment a bit more tomorrow. It is something we did but it looks like for us we needed all the props in out custom logic and it ended up being a wild copy paste and clean up of the generated models just to have the interface. And then we used that interface in the views. We were bullding a starter kit so we had page types. The adding of the custom partial interfaces we did similar to the ModelsBuilder but we embedded the files in the dll and on click of a button in the backoffice we were extracting 'generating' them in the models builder folder. Might be that I miss something here. I can take a further look in your message tomorrow.