Ask what it costs to build in Kenya and you will collect a folk rate within the hour — a single number per square metre, quoted with total confidence and no drawing, no date, and no county attached. This page takes the other route. Every figure on it comes from a dimensioned drawing with a priced bill of quantities behind it: twenty houses, from a compact 2-bedroom on a 40 × 80 to a 5-bedroom maisonette with staff quarters, each taken off its own geometry at mid-2026 rates with a ±10% band admitted up front. All twenty are published on this site with their costs on the page, so you can check the arithmetic yourself.
The short answer, by bedroom count
- 2 bedrooms — KES 3.85M to 5.77M. The floor of the catalogue: a 94.7 m² compact drawn for a 40 × 80 plot at the bottom, a 114.8 m² starter with a master ensuite and guest WC at the top. The flat-roof editions price slightly above their hip-roof twins, because a concrete parapet roof buys different materials than timber and tile.
- 3 bedrooms — KES 4.63M to 7.83M. The widest band, because the houses differ most: a 119.5 m² compact for a short plot sits at the bottom; a 198.1 m² two-storey with a formal lounge and two ensuites at the top. Same bedroom count, two-thirds of a house of difference.
- 4 bedrooms — KES 5.86M to 9.95M. From a 148.6 m² single-storey with a study to a 207.3 m² executive bungalow with a scullery, a two-car carport and a detached staff quarter — the compound, not the bedroom count, writes the bill.
- 5 bedrooms — KES 6.43M to 11.08M. A 191.7 m² single-storey keeps it surprisingly close to the 4-beds; the 292 m² flat-roof maisonette with DSQ and three ensuites is the most house on this site, and prices like it.
None of these are quotations — nobody has tendered your site. They are elemental estimates: quantities measured off complete drawings, priced by element at dated rates, mid-range finishes. That is also why they disagree with each other so usefully. The moment a single number claims to cover all twenty, it has stopped describing houses.
Per square metre, honestly
Divide each published band by its floor area and the twenty houses settle into two spreads. The bungalows run roughly KES 33,500 to 51,700 per square metre. The maisonettes run roughly KES 28,300 to 40,200 — consistently lower, which surprises people until they see why: one foundation and one roof are serving two floors, and foundations and roofs are two of the biggest lines in any bill. The folklore that building up costs more per metre is true of the slab and the stair, and false of the building.
Notice also what the spreads do not do: they do not converge. Small houses price higher per metre than large ones, because kitchens and bathrooms — the expensive rooms — do not shrink in proportion. A rate per square metre is an output of a specific design. Used as an input, it will be wrong in whichever direction costs you more.
The number the estimate is not
A building estimate is the biggest number in your project, not the whole number. Around it sit the land itself, professional fees, county approval charges, the water and power connections, and the external works — boundary wall, gate, septic, paving — that price by perimeter and site condition rather than floor area. On a typical suburban build these together add a sum you should plan in millions, not thousands, and they are the subject of their own page: the hidden costs of building in Kenya. Budget them alongside the house, not after it.
What moves your number off these bands
- Your plot. Soil, slope and access are the substructure lines only your site can write. Black cotton soil that must come out, rock where soil was expected, a steep fall — all of it lands in the foundations before a wall exists.
- Your finishes. The most elastic element in any bill. The same shell finishes at prices a million shillings apart, which is why a cheap quote so often turns out to be a cheapened specification.
- Your wet rooms. Every bathroom multiplies plumbing, waterproofing, tiling and fittings. All-ensuite is a lifestyle decision with a bill attached — our own plans price it visibly.
- Your county and your year. Approval charges differ by county; cement, steel and labour move by the quarter. An estimate without a rates date is not cautious — it is expired.
How to use these numbers
Pick the published house nearest your brief and budget the top of its band; if the top is affordable, the house is affordable, and anything saved is a gift rather than a plan. Then get the number with your name on it: brief your own plan, and the Technical Pack (KES 9,500, VAT inclusive) attaches the priced bill of quantities of your actual drawing — rates dated, elements itemised, previewed watermarked before you pay. From there a tender is something you can read line by line, and a missing wall in a quote is something you can catch.