I haven't used them myself (I live in Europe) but in the US there are companies that will build passive houses and ship them to you in parts. https://www.phoeni

I haven't used them myself (I live in Europe) but in the US there are companies that will build passive houses and ship them to you in parts. https://www.phoenixhaus.com/ https://www.phoenixhaus.com/ comes to mind. I took a similar approach to building a new house on a field in Ireland - my house was built in Latvia and assembled in a week or so by a local crew.