# Why soil blocks are the right foundation for Sierra Leone’s housing

> Local soil, less cement and cooler rooms: the case for alternative building technology.

Thought leadership, published 14 Sept 2026, by TpGroup for TpGroup.

Sierra Leone needs many more decent homes, and the way we build them matters for cost, comfort and carbon.

Interlocking stabilised soil blocks are made from local soil and need far less cement and mortar than concrete blocks. Thick soil walls also keep rooms cooler in the heat.

At TpESTATE we make the blocks, design for them and train local crews to build with them, so the method can spread beyond our own estates.

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