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Most cost overruns don't happen on site. They happen earlier, when a budget is set before anyone has tested it against what the project will actually require.
This guide exists to close that gap. It gives you real cost benchmarks from live projects, so you can walk into any conversation (with a bank, an architect, a contractor) already knowing what's realistic, before you've committed a shilling.
Frequently asked questions
Why do quotes for the same size house vary so much?
Almost always it comes down to finish level and what is included, not the builder overcharging. A bungalow quoted at a basic finish and one quoted at a high-end finish can differ by KES 40,000 or more per square metre before either has cut a single corner.
What does it cost to build a house in Kenya in 2026?
Costs range from roughly KES 35,000 to over KES 100,000 per square metre, mainly depending on finish level. A typical mid-range 120 m² bungalow has an indicative construction cost of around KES 6.6 million, before land, fees, and external works are added.
How much should I budget for professional and government fees?
As a rule of thumb, budget 10 - 15% of your construction cost for your architect, structural engineer, and quantity surveyor combined, plus roughly 1 - 1.5% more for government fees if your project is worth more than KES 5 million.