This will be the first sports city to be set up in Kenya since independence.
The estate comprises 100 single-storey 3-5 bedroom luxury houses.
The facility will create additional 15,000 square metres of commercial floor space.
The Kisaju View Park - 2 comprises three and four bedroom houses.
The Athi View Estate targets middle to high income earners in Nairobi.
17 companies had tendered for the project by the October 12 deadline.
The 2,000-km pipeline will be built at a cost of US$3 billion.
Installation of the security system is set for completion in March next year.
Centurion Symbio-City is expected to be the 14th tallest free-standing structure in the world.
The building features 80 pre-fabricated apartments spinning a full 360 degrees.