A simple soil texture test involves grabbing a handful of soil and squashing it in the palm of your hand. The consensus is that clay soil produces a malleable sausage shape, loam produces a shape but can’t be bent, and sand crumbles without really forming a shape at all. Bear in mind that this is simply a crude starting point. A landscaper or gardener will be able to apply more rigour to soil type and levels, so it’s worth consulting a professional.