Agree with the view that Kajiado will def expand if for nothing else, as a result of the natural growth of Nairobi.
The growth does need to be managed and not just allowed to happen organically as it has if DC is to live up to its full potential.
Some things that need to be addressed in my opinion are:
1. Water - there is a perennial crisis over dry taps for most residents. This despite the fact that Athi river is delivering millions of gallons of water to the Indian Ocean - and sometimes flooding peoples residences in the process - each year.
2. Industries: Despite a proliferation of Universities in DC owing to cheap (er) land, there are very few industries of note that have set up shop in DC as far as I can remember. Well there is EPZ and Kenchick etc - but these were pre existing and not very large. Other than the cement companies in Athir River cant think of any large scale industrial complexes that are being set up in the region. It may very well be a symptom of the incompetence of national government in attracting new industries to the country that spill over to the counties. But truth is for the DC to grow, as with all other counties, it needs to attract and incentivise industries to create employment within the county.
3. Infrastructure especially roads: DC has been the rational choice for Kenyans looking to move into home ownership owing to affordability of land and subsequently cheaper costs of home ownership. Sadly for those who end up buying or building homes in DC the realities of the daily commute push them back to Nairobery. Hopefully the train terminals resolve this issue but still feel there is no substitution for an efficient road network. Rail is very rigid in its routing and for that reason I remain unconvinced it alone will solve the issue. Unless we develop a comprehensive rail system similar to NY subway or London underground, a railway with a single destination though an improvement will not fully resolve the issue. Kitengela town as an example already needs a road expansion. Traffic there can be a biatch.
4. Speculators - I being one of them, need to be heavily punished for any parcels that they hold not put to productive use. Speculation pushes land prices up and in some areas leads to the inability to create sufficiently dense communities to allow for proliferation of support and essential services. There just is no critical mass for even the county government to justify spending money to bring roads, water, elec to some places because firstly - some people are holding land, unwilling to develop or sell at current prices, and secondly those willing to develop the land cannot afford the land prices and are forced to buy further inland where they can afford it. Only thing is this may be too far for them - far outweighing the joys of home ownership. Sort of a self reinforcing loop.
5. Master planning - essential to avoid creating a massive shanty town.