Laying a new driveway sounds simple until you hit the paperwork. The good news is that most driveways in Cornwall can go ahead without planning permission, but there are a few rules on drainage, dropped kerbs and protected properties that catch people out. Here is what actually applies before you dig.
For most homes in England, laying a driveway to the front of your house counts as permitted development, meaning you do not need planning permission. The rule that changes things is surface water. If you lay more than 5 square metres of hard, non-permeable surface (traditional concrete or sealed tarmac) that drains straight onto the road, you will need to apply for planning permission.
You can avoid an application entirely by using a permeable surface such as resin-bound gravel, permeable block paving or open-jointed setts, or by directing rainwater to a border, soakaway or lawn within your own boundary. This keeps you within permitted development at any size.
Much of the ground around St Austell and the wider clay country holds a lot of moisture and drains slowly, so managing surface water properly is not just a box-ticking exercise. A driveway that pushes water onto the pavement can flood a neighbour or ice over in winter, and it is exactly the situation the rules are designed to prevent.
In practice we usually recommend a permeable build-up with a proper sub-base, or a soakaway where the ground allows it. It keeps you inside permitted development and tends to give a longer-lasting surface on Cornish sites.
Planning permission and a dropped kerb are two different things, and this trips a lot of people up. If your new driveway means crossing a pavement or verge, you need a vehicle crossing (dropped kerb) approved by Cornwall Council Highways, whether or not planning permission is required.
Costs vary with the road classification and how much kerb and footway needs rebuilding, but a straightforward crossing commonly falls somewhere in the region of £1,000 to £3,000 including the council fees and the physical works. Busier or classified roads cost more and take longer to sign off, so it is worth starting that application early.
Some situations remove your permitted development rights, so an application really is required. Check these before committing to a design or a date.
There is no fixed size limit if you use a permeable surface or drain the water into your own garden. The only real cap applies to non-permeable surfaces over 5 square metres that drain onto the road, which need planning permission.
Widening usually follows the same rules: permeable materials or drainage into your boundary keep it permitted. If the wider driveway needs a longer dropped kerb, you will still need Highways approval for the extra crossing.
You can check on Cornwall Council's online planning maps, or ask their planning department directly. If you are unsure, it is safer to confirm before work starts than to unpick a finished driveway later.
Got a job in mind across Cornwall or Devon? A quick call or message with Robert is usually all it takes to get a quote moving.