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JengaCalc

Foundation & build cost — in seconds.

Soil-aware. Location-aware. Built for Kenyan builders, in KES.

Region

Baseline. Deepest supplier network; competitive labour market.

Plot & build size

Approximate footprint of the structure

4008,000

Live estimate

KES 6,210,000

Ksh 4,140/sq ft · Strip foundation

Reasonable

Estimate

Ksh 6,210,000

Foundation to roof, incl. 15% contingency

Reasonable
Recommended foundation
Strip foundation

Stable volcanic loam — 600mm strip footings on lean concrete are sufficient.

Foundation breakdown

ExcavationKsh 77,760
Concrete & materialsKsh 216,000
LabourKsh 86,400
Contingency (15%)Ksh 51,840
Foundation totalKsh 432,000

Where the money goes (Nairobi)

Materials · ×1.00Ksh 3,415,500
Labour · ×1.00Ksh 1,552,500
Transport · ×1.00Ksh 621,000
Overheads & feesKsh 621,000

Cost per square foot

Ksh 4,140vs Nairobi median KES 4,500/sq ft
Tip

Consider a smaller footprint, basic finish, or staged construction to reduce Nairobi build costs.

Methodology & sources

Rates are triangulated from public Kenyan construction-cost data sources and updated quarterly. They are indicative ranges, not quotations — for a binding figure, commission a quantity surveyor.