Massive renovations needs an architect. Builders aren't qualified for design ideas nor to provide engineering. Especially if they aren't licensed contractors, as most Amish are not. You will need the architect also for the stamped drawings that you will need to provide in order to receive a building permit.

I have worked with Mennonite builders, many times. I can say from experience that they do not have any better skills or habits any other "good quality" builders have.

It is almost racist to me when I hear about Amish builders. I wouldn't hire a brickmason because they were Italian or a jeweler because they were Jewish. I would hire them based on reputation and skills.

Looking for a builder to barn style add ion for my block house 48x16 it is going to be a bedroom bathroom tv room