08/06/2026
Happy Monday, Nairobi.
Let's talk about the conversation everyone avoids.
What construction actually costs — and why the gap between what people budget and what they end up spending is almost never incompetence.
It is missing information. So here it is.
Labour is not one number. A tiler, carpenter, plumber, electrician, and painter are different trades at different rates. Grouping them as "labour" and guessing a figure is how projects run out of money halfway through.
Materials have a true landed cost. The tile costs X per square metre. But adhesive, grout, spacers, and a 10% wastage allowance bring the real number significantly higher. Every material does this.
Supervision is real work. Someone has to be on site every day — making decisions, checking quality, managing the team. If that is not your project manager, it is you. Either way, it has a cost.
Nairobi traffic is part of your budget. Deliveries get delayed. Artisans arrive late. Anything moving between Mombasa Road and the CBD has a time margin — and time in construction always becomes money.
The 15–20% contingency rule is not pessimism. It is what happens when you plan for Nairobi as it actually is, not Nairobi on its best day.
We have managed enough projects in this city to know: the ones that go smoothly are always the ones planned for reality.
What is the biggest financial surprise you have encountered on a building or renovation project? 👇
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