The project has had its share of controversy since it was commissioned in July 2013.
Tower One is owned by the Gilanis group of companies.
Several skyscrapers are currently under construction or in planning stages across the city.
The facility will be located about 100 metres from Garden City Mall.
The building will be taller than the recently completed 163-metres-high UAP Tower.
This is the second mega shopping facility to come up in Machakos after Crystal Rivers Mall.
The mall offers a mix of local and global retail outlets including Carrefour.
The Commercial Bank of Ethiopia (CBE) Tower is 200 metres tall.
The twin-tower will provide 50,000 sq. m. of space out of which 30,000 will be sold.
This is the biggest development of its kind in the Mount Kenya region.
Talks are underway for China to fund a new highway and rail extension.
The Chinese-funded Orpower 22 power plant will take 17 months to complete.
Bedsitters will rent for Sh3,200 per month on a 30-year rent-to-own plan.