Ask anyone who has run a commercial build and you will hear the same complaint. By the time the job reaches the car park, the budget is tight, the programme has slipped, and everyone just wants the keys handed over. So the surfacing and the markings, which are the very last things to happen on site, are what get squeezed.
For years that was a cosmetic risk and nothing more. A wonky bay or a faded arrow looked sloppy, but it rarely cost anyone real money. Things have moved on. Accessibility law and the EV charging rules have turned the layout of a car park into a compliance issue, and a mistake there can mean lifting the surface and starting again.
Part S Changed the Brief, Whether Developers Noticed or Not
Part S of the Building Regulations is the one to know about here. It came into force in England back in June 2022 and it still catches people out, mostly because it sits in a part of the project nobody is paying much attention to by that stage.
What it actually says is fairly blunt. If you put up a new non-residential building with more than ten parking spaces, you need at least one working EV chargepoint, and you need cable routes laid in for a fifth of the spaces on top of that. Major renovations that leave you with more than ten bays get caught by the same rule. There are a few softer edges. Covered car parks can get away with just the cabling for now, and if the connection cost climbs past around £3,600 a point, you may be able to fall back to cable routes as well. Anything live has to push out at least 7kW. The detail is all in the government’s Approved Document S if you want to check it against a specific scheme.
This is the bit that bites, though. All of it has to be designed into the part of the job everyone treats as an afterthought. A charging bay is more than a socket on a post. You need clearance around it, somewhere sensible for the cable to run, and markings that make it obvious what the bay is and who can park there. Leave the layout until the end and you wind up with chargers jammed into corners that no delivery van can physically reach.
Accessibility is the Other Thing People Get Wrong
Everyone fixates on the EV side, but accessible parking is where car parks tend to fall down. The minimum dimensions for a disabled bay exist for a reason. Someone needs enough room to get a wheelchair out next to the car, and there has to be a hatched zone at the rear for anyone loading from the boot. Shave the bay down to squeeze in one extra standard space and you have built something that fails the people who need it most, with an Equality Act headache waiting down the line.
The marking-out is what pulls the whole layout together. Bays, flow arrows, the routes pedestrians are meant to walk, the spots for loading. When that sequence makes sense, a stranger can drive in and work out where to go without a second thought. When it does not, you see it almost immediately: cars half on the curb, a fire route blocked, a managing agent fielding the same complaint over and over.
Why Sheffield is a Useful Case Study
Sheffield is a good place to look at this. The council has pinned itself to a net-zero goal for 2030, and you can see that ambition feeding into how new sites get specified. Time was, EV provision would be one of the first things quietly value-engineered out once the budget got tight. That does not really happen any more, certainly not on the bigger schemes, from retail parks through to the industrial estates that wrap around the edge of the city.
It changes the marking work too. There is more of it, the mix of bays is more varied, and the margins for error are smaller than they used to be. On those industrial estates, the demand has held up enough that you now get contractors who specialise in car park line marking in Sheffield and treat it as their main trade rather than a sideline. Given a decent surface and a dry day, a good crew will lay out a mid-sized car park inside a day, using thermoplastic that lasts years longer than the cheap paint some sites get fobbed off with.
Get the Marking Phase in the Programme Early
It is just about order. Pull the markings into the conversation while it is still being designed, instead of the week before you hand it over.
Nail down how many bays you need and what mix of them, EV and accessible included, while there is still time to change it. Material matters more than people think, because a busy retail car park will eat through thin paint in a season and you will be back out there far too soon. And the single biggest thing is using someone who actually keeps up with the regulations, because a layout that fails inspection is a layout you are paying to do twice.
A car park is the first thing a visitor touches and pretty much the last thing the build team thinks about. That gap is why it goes wrong as often as it does. Fold the marking-out into the compliance package rather than leaving it as the tidy-up job at the end, and you spare yourself the one cost nobody ever puts in the budget, which is doing the whole lot again.
