A five-storey building in Ruiru town collapsed a day after the county government ordered the residents to vacate.
The building collapsed hours after more than 100 tenants were evacuated when cracks were seen on its pillars on Sunday afternoon.
No one has been affected following the incident.
Kiambu governor Kimani Wamatangi, together with Firefighters led the rescue operations on Sunday after receiving reports on the danger from the National Construction Authority (NCA) and the Ruiru OCPD.
He had said that the building would remain closed awaiting the assessment only to cave in later.
"We will not allow anybody to occupy poorly constructed houses as they are dangerous, and this Ruiru house is one of them," Wamatangi said.
Images making rounds on social media on Sunday afternoon showed residents of the ill-fated house shuffling to and from the house in an attempt to salvage what they could before county and security officials cordoned off the apartment.
Police officers were also present to maintain law and order as the evacuation continued. They also on standby to protect property and thwart any looting plan by those who wanted to take advantage of the situation.
The building seemed to be fully occupied with business operators dominating the ground floor.
The events came barely days after a building collapsed in Kasarani and Ruaka, where lives were lost.
Responding to Ruaka’s incident, Wamatangi disbanded the committee responsible for approving the construction of buildings in Kiambu.
This is the third house to collapse in Kiambu County since Wamatangi took the oath of office.
Two months ago, five people perished in Kirigiti and five were injured after the house under construction collapsed.