There is a particular kind of chaos that only urban planners fully appreciate. It is not the dramatic chaos of a building collapse, though Nairobi has had those too. It is the slow, grinding chaos of a city where every individual decision makes perfect economic sense and the collective outcome is a catastrophe. Welcome to Westlands.
Westlands was designed as a low-rise residential neighbourhood, a leafy address for the upper middle class, with controlled commercial activity at its edges. Today, 20-to-30-storey towers jostle for airspace above what were once single-family plots.
City Hall confirmed in February 2026 that all seven of Westlands’ original sub-estates, among them Spring Valley, Parklands, Loresho, and Rhapta, were planned as residential zones. The same City Hall has spent decades issuing permits that contradict that plan entirely.
In March 2026, residents of Brookside Estate watched two steel scaffolding poles, each five metres long, fall forty metres from a 24-storey building under construction in a zone capped at four storeys.
That building had received both a county permit and a Nema environmental licence, neither of which required the developer to first obtain a change-of-use approval. In Nairobi, the paperwork often arrives before the logic.
The roots of this disorder run deep. Nairobi’s 1973 Metropolitan Growth Strategy expired in 2000. For the next 14 years, a city growing at over four percent annually, from roughly one million people in 1973 to more than three million by 2009, operated without a binding spatial framework. Developers filled the vacuum. The result was not a city built in silos so much as a city built in spite of itself.
NIUPLAN, the Nairobi Integrated Urban Development Master Plan, was completed in 2014 with support from Japan’s International Cooperation Agency and approved by the government in 2016. It was the city’s fourth master plan.
It is also severely under-implemented. City Hall currently lacks clear rules for issuing building permits, a gap that opened when the repeal of the Physical Planning Act rendered the 2004 zoning guidelines obsolete. The plan exists. The enforcement does not.
The infrastructure absorbs the consequences. Westlands’ water supply, sewerage, stormwater drainage, and roads were all designed for a residential neighbourhood. City Hall’s own February 2026 disclosure acknowledged that construction had gone far beyond the area’s original purpose, straining every system it relies on.
When a neighbourhood planned for bungalows starts hosting office towers, the roads do not magically widen and the pipes do not deepen. Everything fails more slowly than the buildings rise.
This is the central problem with designing in silos. An architect approves a tower. An environmental authority issues a licence. A county officer signs a permit. Nobody asks whether the pipes can handle three hundred additional units, or whether the access road can absorb the traffic.
The Physical and Land Use Planning Act of 2019 requires counties to gazette their zoning plans, a directive the Court of Appeal had to reinforce in a September 2025 ruling, because Nairobi City County still had not done it. Six years after the law passed.
Nairobi’s metro population crossed five million in 2023 and grows at roughly four percent annually, adding the equivalent of a mid-sized Kenyan town every year.A city growing that fast needs planning that runs ahead of the crane, not behind it.
What Nairobi has instead is a system where residents in Kilimani, Lavington, and Parklands go to court to stop buildings that block their sunlight, because the permits arrived before any coherent neighbourhood plan did.
City Hall has now advertised a tender for a Local Physical and Land Use Development Plan for Westlands. Better late than never, though one suspects the developers who built 24 storeys in a four-storey zone will find a way to be consulted.
The deeper lesson is not about Westlands. It is about what happens when a capital city treats planning as an afterthought to investment.
Nairobi generates a big share of Kenya’s GDP. It deserves infrastructure designed to carry that weight, not regulations written for a city one-twentieth its size.
The writer is an engineer and member of the Engineers Board of Kenya.
