Vernacular architecture is architecture characterised by the use of local materials and knowledge, usually without the supervision of professional architects. Vernacular buildings are typically simple and practical, whether residential houses or built for other purposes.
In Ukraine vernacular architecture represented by "khata" (ukr. "хата", eng. "house").
"Ukrains'ka khata" (ukr. "Українська хата"; eng. "Ukrainian house") is some sort of house-building art objects and in our days is like cultural heritage of Ukraine.
Many examples of Ukrainian vernacular architecture you could see now in open-air Musem of Folk Architecture and Life of Ukraine aka «Pyrohiv» (ukr. Пирогів - village near Kyiv city).
This shift in building style also brought about a shift in usage.
At the most visible level, round, amorphous shapes gave way to rectilinear layouts.
The organization of family compounds also changed. Traditionally, one would see 2-4 rondavels (round, single-room structures), all linked by a low wall (lolwapa) into an inward-oriented cluster. That got replaced by a single, larger house, presumably with multiple rooms inside.
In terms of usage, you could see the difference best in the middle of the day. This is a desert country, and the modern materials and constructions are a thermal disaster. Thick walls with a lot of thermal mass got replaced by low-mass walls. Uninsulated tin roofs collect solar gains (and radiate heat, becoming uncomfortably cold at night). Thatch roofs also tend to have wide overhangs, providing shade at the side of houses.
As a result, people living in new houses tended to be outside, squeezed under the shade of whatever scraggly trees there were. Those with traditional houses tended to be inside, or sitting in the shade on the kind of built-up seat that runs around many rondavels.
I never priced things out, but the only way to understand this shift had to be as a function of cost. Thatch had to be imported, and I think doesn't last beyond a decade at most. And the traditional walls required a lot more seasonal maintenance.
What's interesting is that most houses being built in rural areas in SA (as e.g. opposed to Botswana) are not true vernacular but cross over buildings. In the process a lot of traditional architechture are being replaced; in this regard I think what would be cool is to find talented architects to "preserve" some of this in new commercial buildings.
Rural building are now much more Western (with huts having rooms are not possible, you sort of can have "graphs" though). The budget constraints also mean that houses may be built room by room over many years. One interesting "vernacular" developments I would say is pillars. Rural villages love them! It would be interesting to see how this evolves into a 21st century vernacular.
Are you referring to the fractal structures found in many traditional African building plans?
In any case, the fractal properties of African villages and other cultural artifacts is an excellent topic for education in Africa in the future.
You can have much bigger graphs too, it is common traditionally to have the chief in the middle and the tribe living around him, but I can imagine that there could be fractals.
I always make backups of interesting sites using Archive.org, but, think, African Vernacular Architecture Database should be printed by someone as a book too ;-)
These projects are to address the poor condition of schools, where children are typically taught in overcrowded shacks.
Sidenote: you said your town is about 300 people? What do you do for work there? Or do you work remote?
EDIT: Now it does
"Notes on the synthesis of form" by Christopher Alexander is a wonderfull book, and including several Marvin Minsky quotes it can be read as an introduction to the philosophy of vernacular technology - and how tradition based design work differs from expert, intent and theory driven design. Vernacular technology has it's problems, but as long as the problem constraints are not changed, it works wonderfully in the environment that gave birth to it.
May I recommend the beautiful series The Tribal Eye, BBC, 1975, presented by a strapping young David Attenborough in his 50s?