Syokimau Building Collapse, Near Nairobi, Kenya: The Top Floor of an Unfinished Multistorey Building Falls on a Construction Site With 405 Workers Present, Six Dead and Five Rushed to Hospital, While Reports Differ on the Number of Storeys and Rescued and the Cause Is Not Established

What happened

The Syokimau building collapse happened on the morning of Friday 13 November 2026 on a construction site in Syokimau, in Mavoko on the southeastern edge of Nairobi, Kenya. The top floor of an unfinished multistorey building came down. A police official told reporters that six bodies were confirmed and five people were rushed to Imara Daima Hospital. Al Jazeera and Reuters (carried by the Sowetan) report the same toll. Reports differ on the number of storeys and on how many people were rescued.

The police official said 405 workers were on the site and that everyone had been accounted for. Al Jazeera reports that the structure’s uppermost concrete slab gave way and brought down part of the building, and that the emergency report did not establish why. The site was closed after the collapse. It follows a deadly collapse in Nairobi on 23 October that killed eight people.

This page names no one. It sets out what is reported, where the reports differ and what the collapse teaches about unfinished buildings and rescue.

What the reports say

• When: The morning of Friday 13 November 2026 (Al Jazeera; Reuters via the Sowetan)
• Where: A construction site in Syokimau, Mavoko, southeast of Nairobi, near the SGR terminus on the Nairobi-Mombasa highway (Reuters via the Sowetan; Al Jazeera)
• The building: An unfinished multistorey building; Al Jazeera calls it eight-storey (Al Jazeera; Reuters via the Sowetan)
• What fell: The top floor, with the uppermost concrete slab giving way and bringing down part of the structure (Al Jazeera; Reuters via the Sowetan)
• Deaths: Six bodies confirmed, according to a police official (Reuters via the Sowetan; Al Jazeera)
• Injured: Five people rushed to Imara Daima Hospital (Reuters via the Sowetan); TV reports said five were pulled alive (Al Jazeera)
• Workers: 405 workers were on the site and all were accounted for, said the police official (Reuters via the Sowetan)
• Rescue: Firefighters and specialist rescue teams searched the rubble; the Kenya Red Cross posted about the collapse (Al Jazeera; Reuters via the Sowetan)
• Cause: Not established; the preliminary report from the Nairobi City County emergency team did not say why the slab failed (Al Jazeera)
• The wider picture: A 23 October collapse in Nairobi killed eight; as of October there had been 24 building collapses in Kenya in 2026, more than in any year of the decade, according to Stats Kenya (Reuters via the Sowetan)

Where reports differ and what we do not know

• Storeys: Al Jazeera says eight-storey; Reuters says a multistorey building and gives no number. We say an unfinished multistorey building and show the eight-storey figure.
• Rescued and injured: The Kenya Red Cross first said three were rescued and one was missing; TV reports later said five were pulled alive; the Sowetan sub-headline says five injured and dozens rescued; the police official said five were rushed to hospital. We say five in hospital.
• Missing: Al Jazeera notes the number of workers present was not confirmed at first; the police official later said all 405 were accounted for. We use the later statement.
• The cause: The preliminary emergency report did not establish why the slab failed. We do not say.

What this collapse teaches

An unfinished building with workers on every floor puts many people under the same slab, so a failure at the top can bring down several floors in seconds. The reports say the top slab gave way, but the cause has not been established. A state research body, quoted by Reuters and Al Jazeera, names poor workmanship, weak supervision, substandard materials and faulty designs as the wider causes of collapses in Kenya. These are general statements, not findings about this building.

We have covered similar collapses, among them the Eastleigh building collapse in Nairobi on 23 October, the Brooklyn building collapse in Flatbush, the Alexandria building collapse in Egypt and the Chawri Bazar building collapse in Old Delhi. Our guide to how rescue teams search a collapsed building sets out what bystanders should and should not do. Our guide to what a city needs to rescue people from collapsed buildings lists the teams and kit, and our guide to scaffolding and work at height covers site safety.

We do not know why the top floor failed, who owns or built the building, or what the inquiry will find. We will update this page when a finding or a corrected toll is published.