This house is bilaterally symmetrical and as such can easily be turned into 2 separate apartments with some simple mods. Nevertheless, it can also function as two semiprivate suites given its separate levels, 2 bathrooms and sliding walls. It also has a usable attic that is also bilaterally-divideable and accessible.
If the house is to be shared, then its fluidity-of-space lends itself well to that as well, and its upper levels and extra bathroom to some semblance of private retreat. All this in a ~22'x13' footprint.
The house uses a shed rooftop which creates the shape of the house, which allows for maximum window exposure to the sun and maximum roof exposure against the prevailing winds. This house may also lend itself well to a sloped site.
The kitchen is essentially a workstation-in-a-hallway (which may consist of a modern "Hoosier" design), but could open up quite large, given that it opens via sliding doors to two rooms.
The modern de-clawed standalone bathtub that echoes the clawfoot tubs of old still has some sharp edges to be cautious of when getting in and out, but it looks cool*. ;)
Below are some test renders: http://web.ncf.ca/fr714/SecondSavedACADrender.jpg
Lighting is adhoc for now, but I have some models of some industrial spotlights that I'll be trying out, so next renders should include those as well as any additions.
*Plumbing not included ;D