Groundworks decide whether the rest of a job runs to programme, and in Lutterworth there are three things we look at before quoting one.
Trees come first. The gardens in the older part of the town are long and many of them have had a substantial tree in them for a century. On shrinkable clay, a foundation near a mature tree has to go deeper than the standard depth, sometimes considerably deeper, and occasionally the answer is a different foundation altogether. This is the single most common reason a groundworks price moves between the quotation and the dig, so we would rather establish it with a trial hole first.
Made ground is the second. The medieval core of the town has been built on, knocked down and built on again for a very long time, and what is under a back garden there is not always the ground you would like. We dig to find bearing rather than to reach a number on a drawing, and the building inspector will want to see the same.
Access is the third. Getting a machine onto a burgage plot with no side entry is sometimes impossible, and the job becomes a hand dig or a conveyor job. That is a real difference in cost and in programme and it needs to be in the price at the start rather than appearing as a variation in week two.
Everything gets inspected before it is covered. We book the inspections and we do not pour over an unseen trench.
Our footings and excavation page explains how we approach foundations and site preparation.