This is the SLEDhaus, a pre-fab small home designed as a vacation property that has no loft and can be fully off-grid.
According to SLEDhaus:
The tiny cabins called the SLEDhaus will be built with upgraded features throughout the 572 sq. ft. 1 bedroom, 1 bathroom home, with an available expansion option.
Each home is built to IRC code and can be a permanent or temporary housing option that can serve as a retreat location, remote employee housing, or a park home model that can be rented on a nightly basis at any recreational resort.
They haven’t built one yet, but you can enjoy the renderings and watch the builder talk about the structure below! Plus, I included even more details after the last video.