The insurer is building 11 floors of furnished and serviced apartments in Kilimani, Nairobi.
The Sh6.2 billion facility will offer a floor space of 50,000 square metres in three units.
The investors have urged Nakuru County to revive the project.
A 100 feet by 50 feet plot is currently going for at least Sh10m up from Sh4m in 2015.
Investors are building more high-end warehouses to meet rising demand.
RiverRun Estates offers residents an easy access to Tatu City and Migaa Golf Course.
Nairobi's skyline is more crowded due to increased office space supply.
This is the first major revamp by Sarit Centre since its inauguration in 1984.
Dredging works that began in October last year are well underway.
The project will get underway as soon as funding talks are concluded later this year.
Nine people were believed to be working at the site when the incident occurred.
Developers will be allowed to build up to 75 floors in high-density areas.
The much-awaited summit will take place on June 12-13, 2025.