Why is borehole drilling quoted per metre?

Because depth is the main cost and nobody knows the final depth until drilling. A per-metre rate with an estimated depth from the hydrogeological survey is the honest way to quote it. Be wary of a flat price quoted before a survey.

What happens if the borehole is dry or the yield is low?

It happens, and a survey reduces the risk rather than removing it. Anyone who guarantees water before drilling is selling you something. We tell you the survey's confidence level before you commit, and what the commercial position is if the yield comes in low.

Do I need NEMA and WRA approval?

Yes, both, before drilling starts. An unpermitted borehole is illegal, hard to regularise, and becomes a problem the day you try to sell the property. We do not put a rig on site without them.

How long does the whole process take?

The permits are usually the longest part. Budget several weeks from survey to permit in hand, then a few days for drilling and equipping on a typical residential hole.

Borehole Drilling Cost in Kenya: What You Actually Pay in 2026

The short answer

A complete, pump-equipped residential borehole in the Nairobi area typically lands between KES 400,000 and KES 700,000. Drilling itself runs KES 4,000–7,500 per metre, and most Nairobi guides cluster nearer the upper half of that range.

But the per-metre figure is not the quotation, and treating it as one is how people end up surprised.

What actually makes up the cost

Depth is the biggest single driver, and depth is geology rather than negotiation. Nairobi and Kiambu are largely clay and weathered rock over volcanics; boreholes here commonly run 150–250m. Harder formations drill slower and cost more per metre.

After depth, the components that move the number are casing depth, whether you need a booster set on top of the borehole pump, and how far the tank sits from the head.

The regulatory cost people forget

A borehole requires a WRA permit and a NEMA licence, both obtained before drilling. These are real costs with real lead times and they are not part of the drilling rate. We quote them separately and visibly so you can see what is regulatory and what is our work.

An unpermitted borehole is not a saving. It cannot be regularised easily, and it surfaces as a problem at exactly the wrong moment: when the property is being sold or valued.

What a complete job includes

Hydrogeological survey · NEMA licence and WRA permit · drilling · casing and gravel packing · development until the water runs clear · test pumping to establish real yield · pump sized to that yield and the tank height · control panel, rising main and changeover.

Test pumping matters more than people expect. It is the difference between a measured yield and a driller’s estimate, and the pump specification depends entirely on it.

Where to be careful

A flat price quoted before a survey. A guarantee of water. A pump specified before test pumping. And a quotation that does not separate permits from drilling: that is usually where the cost appears later.

Rates

Work	Rate	Notes
Drilling, Nairobi and Kiambu clay	KES 4,000 – 7,500 per metre	Nairobi guides cluster at 6,500 – 7,500
Complete borehole, pump-equipped	KES 400,000 – 700,000	Standard residential
NEMA licence and WRA permit	Quoted at survey	Required by law before drilling

Rates reviewed 2026-08. Every job is confirmed with a written quotation before work starts.