Groundworks is the part of a build almost nobody sees once the job is finished - and it is also the part that decides whether everything on top of it lasts. If you are planning an extension, a new driveway or a garden project, one of the first questions is usually the hardest to answer honestly: what will the groundwork cost?
The frank answer is that there is no single figure, and anyone who quotes you a firm price over the phone without seeing the ground has not really looked at your job. What we can do is explain what drives the cost, so you can read a quote properly and spot the difference between a fair price and a corner-cutting one.
What you are actually paying for
Groundworks pricing comes down to a handful of things, and once you know them the numbers stop feeling like a mystery.
- The ground itself. Soft clay, running sand, a high water table or old buried concrete all change how much has to be dug, held back and carted away. Two identical-looking plots can cost very different amounts once the digger goes in.
- How much has to be moved. Excavation is priced by volume and by how far the spoil has to travel. "Muck away" - removing and legally disposing of the dug material - is a real cost that is easy to underestimate.
- Access. A machine that can reach the working area does the job in a fraction of the time. A tight side gate, a job that needs everything barrowed by hand, or a shared drive all add labour.
- Materials. Concrete, hardcore sub-base, drainage pipe, membrane and edging are all priced by the tonne or the metre. Prices move, so a good quote is specific about what is included.
- Depth and spec. Foundations dug to building-control depth, drainage laid to the right fall, or a driveway built on a proper compacted sub-base all cost more than a shallow shortcut - and they are the whole point.
Typical ranges vary - and here is why
You will see "cost per square metre" figures online, and they can be a rough starting point, but treat them with caution. A driveway on firm, level ground with good access is a different job to the same-sized driveway where the old surface has to come up, the ground is waterlogged and a soakaway is needed. The materials might be identical; the groundwork underneath is not.
That is why we always come and look before we price. It takes half an hour, it costs you nothing, and it means the number we give you is the number you pay.
How to compare quotes fairly
When you have two or three prices in front of you, the cheapest is not automatically the best value - and the dearest is not automatically the most thorough. Look for these instead:
- Is the spec written down? Depths, sub-base thickness, drainage falls, what is being taken away. Vague quotes hide the corners that get cut.
- Is muck away included? If disposal is left off, a low headline price can climb sharply once the spoil has to go somewhere.
- Does it cover reinstatement? Backfilling, making good and leaving the site tidy should be part of the job, not an extra.
- Are they insured, and will you deal with the people doing the work? On groundwork, that matters more than a glossy brochure.
Dug straight, laid level and compacted properly - that is the honest groundwork every good job is built on.
The bottom line
Good groundwork is rarely the cheapest line on a build, but it is the one you least want to get wrong - because putting it right later means digging up everything that went on top. The sensible approach is simple: get someone to look at the actual ground, ask for a clear written price, and make sure the quote covers the digging, the drainage, the disposal and the making-good.
Whatever your job involves, from foundations and drainage to driveways, the honest approach is the same. If you are weighing up a job in Newmarket, Suffolk or the surrounding villages, we are happy to come and take a look and give you a straight, honest price with no obligation. Call NSV Groundworks on 07916 033276 and we will talk it through.