I have also had the chance to look at the documents and plans. Am no expert so it has left me rather confused. The "live" pictures are for a single room steel house (which don't look very impressive to me since they look like a normal mabati house albeit stronger if anything). The quotations are a bit confusing as well. Anyone who has understood the documents?
I have had the chance to stay in a container house and it was quite different from what am seeing here.

Moving on, has anyone constructed an average house (one bedroom, living room, kitchen) with the hydraform blocks? What would be a good budget to set aside for such considering that its an out of town house?

Try looking at the shared link. Its more clearer
https://docs.google.com/...LWFmYTYtNjcyODYzOGFmZWM4

Are this machines still available. And for Nairobi area where would one start.

@User

almost five years down,hows the 420k project?

Bloody white elephant.

lets not lie to ourselves. make a budget of not less than 600k minus the plot. am building a simple two bedroom na foundation imetumia 230k

If PRI is able to build this for 1m (their overhead/profits as well as approvals and all fees inclusive) then surely with 600-800k one can easily build the same on their own.

http://pri.co.ke/propert.../1-br-ensuite-bungalow/







And this is when you follow all rules. I know one kanjamaa who said most of us are "fools" for following the rules ati approvals nini nini. The guy just built a mabati fence around his 1/8th so that no one can see inside, sneaked in materials over night when nobody was looking, got kawaida fundis to excavate and start building. In one years time he had a beautiful 2br home that many would envy for a "whopping" 900k. To this day he is living there enjoying himself. I would not recommend that approach but there are many ways to skin a cat. The main thing that eats up money is inflation of costs and swindling by contractors. Materials are not expensive at all provided you build small and simply without madoido mob.