There are several modular home companies that deliver modular homes in VT and even a modular home manufacturing company - Huntington Homes in Montpelier which when my wife and I were considering building seemed to be a quality option.

I think modular homes are becoming a larger industry in the NE with new building methods reducing costs of new homes.

Likely going to VT land to put homes on or transported somewhere else across NE! We moved to Maine last year and have also been seeing a lot of them around us as well.