Starting around 23,000 USD dollars, this is a perfect solution for a 3 bedroom 1200 square foot home that can be customized per end user or site. The kits are bare bones: you get design and structure (SIPs exterior walls & roof, and design documents). End user will need to finish the house with a local contractor. They have created a list of windows, cladding & doors to order directly through the vendor to make it easy on purchasers and their contractor.
This then gives you great design, but allows you to choose the systems and finishes that best compliment your lifestyle and budget, thus making it your own.
A very important consideration when looking for a home lot is the structure’s passive solar design. In order to be their most efficient, these homes must have their designated wall facing true south, and with enough room to have their passive solar design work best.
The Casa Ti is one of the single family units that have been designed but they have larger units available and more traditional design as well.
The Metro Cabin is a kit that can be put together in 3 Days by 2 people. It uses high quality materials and is guaranteed for 25 years with a limited warranty. At 16' deep x 20' wide it has generous room. It has an expansive, airy feel due to the ceiling height which is 9'-9" in the front. This system is constructed of treated timber perimeter wood beams, engineered joists, and 3/4" wood sub-flooring. The walls are stud-built with wood siding on the exterior. The cabin is trimmed in durable, high-grade spruce wood throughout. The curving galvanized steel beams support the 2" x 6" tongue-and-groove pine roof deck.
Prices start around 32000 and then the options kick in, a kitchen, a bathroom, etc.
They have worked with Ikea to create some interior options which I am sure you could do as well.
They use the instant heat water system which might not be good for a solar rig.
You will have to build the deck your self which would expand the living space of the cabin greatly.
There is also a need to find a way to insulate, heat, cool the structure as well. I do not see any of these in a snow setting.
The company also offers the metro shed as a temporary office.
I am sure a few of these could be tied together to create a more livable space for a family.