ACCOMMODATION is a basic necessity of life, its nice to know that you are considering tackling its problems of which affect life considerably.
there is no dought that housing development is quite expensive of which the low income earners finds it hard to afford. but to answer your question to the best of my knowledge.
1.the price of land is a function of what the would be price of development will be.
2. the element of construction also add to the cost of a building e.g type of roof, blocks, finishes etc.
3. every line drawn by an architect implies cost on the eventual building.
4. the type of building also contribute to the cost e.g 1 bedroom will be cheaper than 2 b/r and so on.
5. houses built on contract is much expensive than those on direct labor
so in effect, get an allocated land from the government directly were possible, go for cheaper building elements, have a simple and functional design avoid any necessary design, plan the type of houses based on your targeted audience and try as much as possible to use direct labor.
i hope i ve contributed a little.
thanks for the interesting topic
hakir
onivehu2000@yahoo.com