Almost every resin driveway advert mentions it. No planning permission needed. It is a genuine selling point and it is mostly true. But there is a condition attached that a lot of quotes never spell out, and if it is missed you can end up with a permeable surface sitting on an impermeable driveway, which is not the same thing at all. Here is how it actually works and what it means for what you should be asking for.
Why the Surface Lets Water Through
Resin bound is made by coating every piece of aggregate in resin and mixing it in a forced action mixer, then trowelling it down at around 18mm. Because each stone is coated rather than the whole surface being flooded with resin, the stones bond to each other at their contact points and tiny voids remain between them. Water runs into those voids and straight down. That is the whole trick. It looks like a solid surface and it drains like gravel.
What the Rule Actually Requires
The regulation people are referring to dates from 2008 and it is narrower than most adverts suggest. You need planning permission if you lay more than five square metres of hard surface in front of a house, using an impermeable material, where the rainwater drains onto the road or pavement. All three have to be true. Use a permeable surface and there is no size limit and no application. That is why resin gets advertised the way it does.
The Condition Nobody Mentions
Here is the part that matters. A permeable surface only works if the water has somewhere to go once it passes through. Resin bound sitting on a solid slab of concrete or on dense standard tarmac is a porous layer on top of a sealed one. The water goes through the resin, reaches the barrier, and then has to travel sideways to somewhere. Usually the edge of the drive, and often the road.
The surface is permeable. The driveway is not. And it is the driveway the rule is about. This is not an unusual situation either. Laying resin over an existing sound tarmac or concrete drive is the cheapest and most popular way to have a resin driveway, precisely because you skip the groundwork. If that is your job, the water still needs a designed route into your own ground.
What a Fully Permeable Resin Driveway Looks Like
If you want the drive to be genuinely permeable from top to bottom, every layer has to allow water through. That means an open graded stone base rather than the standard closed Type 1 used under most driveways, and a porous binder course rather than dense tarmac. Then the resin on top. Water passes through all of it and soaks into the ground beneath, which is what the regulation was written to achieve.
It costs more than laying resin over what you already have. That is the honest trade. The permission you avoid is genuinely free, but the build that avoids it is not.
The alternative is perfectly legitimate. Lay resin over an existing impermeable base and design the drainage properly, sending the runoff to a soakaway, a border or a lawn within your boundary. Do that and you are still inside permitted development at any size, because the water never reaches the highway. Either route works. What does not work is assuming the resin alone handles it.
Bound and Bonded Are Not the Same Here Either
Worth repeating because it catches people constantly. Resin bonded is a different product. The resin is spread onto the base and stone is scattered over it, so only the underside of each stone is glued. It is around 5 to 6mm thick and completely sealed.
Resin bonded is impermeable. It does not benefit from any of this, and over five square metres at the front of a house draining to the road it needs planning permission like tarmac or concrete would. Two products, one letter apart, opposite answers. If a quote just says resin, ask which.
What Staying Inside Permitted Development Actually Saves You
More than the application fee, though that is part of it.You avoid the waiting time, which can run to weeks before work can start. You avoid the possibility of refusal, which leaves you with a design you cannot build. And you avoid the awkward conversation years later when a solicitor asks during a sale whether the driveway had the permission it needed and nobody can find any paperwork. There is a design benefit too. A permeable drive does not need channel drains cutting across it to collect surface water, so you get an uninterrupted surface, which is a large part of why people want resin in the first place.
What It Does Not Exempt You From
Permitted development is not a blanket exemption, and resin does not change any of the following. If you need to cross a pavement or verge to reach your driveway, you need a dropped kerb. That is a separate application through your council’s highways team and it is required regardless of the surface you choose.
Listed buildings and conservation areas carry their own restrictions everywhere in the UK. And you still need proper falls built into the base. Permeable does not mean level and forgotten. Water should be moving in an intended direction even when it is going downward.
Permeability Is Not Permanent
This is the point almost nobody raises, and it is the reason a resin drive can quietly stop being compliant. Those tiny voids between the stones fill up over time. Silt, dust, leaf debris and general grit work down into the surface, and as they accumulate the rate at which water passes through drops.
A resin drive that is never cleaned can become close to impermeable after enough years. It looks fine. It just does not drain like it did when it was laid. Keeping it swept and giving it an occasional proper clean is not only cosmetic. It is what keeps the surface doing the job that kept you out of the planning system in the first place.
Common Questions
Do I need permission for resin bound at any size? Not at the front of a house, provided the water genuinely reaches your own ground rather than the road. That is the condition, not the material.
Can I lay resin over my existing concrete drive and still avoid an application? Yes, if you add drainage taking the runoff to a soakaway or planted area on your land. Without that, a sealed base means the runoff has to go somewhere, and if that somewhere is the road you are outside permitted development.
Does this apply in Wales and Scotland? Wales broadly mirrors the English rule. Scotland and Northern Ireland run their own planning systems, so check with the local authority.
What should I ask an installer to confirm? Whether the full build up is permeable, and if it is not, where the water is designed to go. In writing, on the quote.
Get the Drainage Answer in Writing
The question worth asking any resin installer is not whether resin needs planning permission. It is what happens to the water once it goes through the surface.
Come out and I will look at what you already have, tell you whether it can take resin, and set out either a fully permeable build up or a drainage design that keeps your runoff on your own land. Both routes go on the written quote with the detail spelled out, so you have a record if it is ever questioned. Call Advanced Driveway Solutions on 07944680279 or email advanceddrives2020@gmail.com to arrange a visit. You will find us at 10 Altham Rd, Morecambe LA4 4UG, United Kingdom. If you have a resin quote already, check whether it says a word about drainage. Plenty do not.