A neat wallbox price often assumes the cable can be clipped on a wall. The moment it has to cross a resin drive, a block-paved courtyard or a tarmac strip, the finish becomes the argument. Lift-and-relay, a duct installed before the surface went down, or a longer route around the edge are different jobs. Get reinstatement in writing, including who supplies matching blocks or resin, before anyone cuts.
Resin-bound is a thin finished surface
Resin-bound gravel is aggregate mixed through the resin and laid as a permeable mat. A saw cut through it leaves a scar that a bucket of cold lay will not disguise. Patching with a new mix rarely hits the same colour once the original has weathered.
If the drive is not down yet, ask the groundworker for a duct on the agreed line, with a draw rope, before the resin goes on. Retrofitting under a finished resin drive is the expensive version of the same cable.
Block paving can come up, if someone keeps the blocks
Concrete and clay blocks are designed to be lifted. A careful installer can take them up, lay a duct or armoured cable as the design requires, and put the same blocks back. That only works if the blocks are kept in order and none are cut in half for speed.
A disc cut across the middle of a courtyard is permanent. If the quote says reinstate to a fair finish, ask what fair means in a photo of your actual blocks. Herringbone and mixed colours are harder to put back than a single stretcher bond.
Tarmac, gravel and the edge route
Tarmac patches go dark, then pale, and stay visible. Gravel is the simplest trench if the edging can be opened and the same stone put back. Running the cable the long way along a fence, in containment, can beat a short cut through a courtyard you have just paid to lay.
Say which of those you want. An electrician pricing a straight line under the drive is not pricing the long way round unless you ask.
- Who lifts the surface and who puts it back
- Whether matching resin or spare blocks are already on site
- Duct, warning tape and the route drawn on a photo
- What is excluded if a buried pipe is in the way
Buried pipes are not a surprise you want on the day
Water, gas, electricity and fibre can all sit under a front drive, including services to a neighbour on a shared entrance. The quote should allow for hand digging where a scanner suggests a service, and for stopping if the route is blocked. A day rate for a redesign is kinder than a cut pipe.
Depth and protection belong in the method, not in a guess from a forum. Ask the installer to state how the cable will be protected under a drive that cars will park on.
Price the finish beside the charger
A straightforward 7kW install on a wall next to the bay, with no excavation, often sits around £800 to £1,400 including VAT as a September 2026 planning band. Excavation and reinstatement of a finished drive can cost more than the wallbox. Compare quotes that include the same surface, not a clipped-cable price against a dig price.
If you are about to relay the drive for other reasons, do the duct then. Paying twice for the same trench is the usual regret.
Frequently asked questions
Can the cable be clipped around the drive instead?
Often yes, if a wall, fence or edge gives a safe route that still reaches the charge port. It can look busier and it can be longer, but it leaves the surface alone.
Who matches the resin colour?
Agree that before the cut. Weathered resin and a fresh mix are rarely identical. Some owners would rather a duct went in during the original lay.
Does a permeable drive rule change the electrics?
No. Permeable paving is a planning and drainage question. The circuit, earthing and network notification are unchanged. Do not let a trench punch through the drainage layer without the groundworker knowing.
Core buying guides
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Related guides
Sources and further reading
How this guide was prepared
This guide was written by the Local EV Installers Editorial Team. We compare official guidance, legislation and established consumer information, separate general information from project-specific advice, and show publication dates and sources. We do not accept installer accreditation claims at face value.