I had wondered if there were a sort of open-source floor plan for a smallish single-family home.

I imagine a design that has variations for different geographical regions of the country to account for material availability, local needs and codes. Optimized for ease of construction, cost, etc.

Perhaps it could get some sort of blessing from various municipalities so that building permits are either waived or fast-tracked.

Perhaps construction workers could learn or train to construct these homes such that experienced contractors can rotate across a number of builds in an area — total time for construction of one home perhaps close to 3 or 4 months.