Building with local materials makes sense from an environmental standpoint by reducing transport energy. Since local materials will yield in different ways, architectural styles will need to adapt so buildings are resilient to the regional climate.<p>Extreme weather in regional climates demands better quality building materials, and traditional architectural styles may adapt poorly to new climates. Earthen bricks may work fine in the Middle East, but unless the bricks are fired, they cannot survive wetter regional climates (even with their claims of being waterproof), let alone a snowy climate. On the other hand, a Scandinavian-style A-frame will keep snow from accumulating on the roof, but such a design feature is extraneous for much of the world.<p>If you did want to build your own house using local materials, and you have wood available, rammed earth may be a better choice than unfired bricks, but it still won't perform too well in cold climates.