Dropped kerbs, hardstanding and surface water in one job
The paving and the dropped kerb are decided by different people under different laws. Here is the order to do them in, and what the 5 square metre run-off rule actually says.
Laying a driveway across your front garden is two separate jobs with two separate decision-makers, and the driveway planning permission surface water question is only half of it. The planning side asks what the new hard surface does with rainwater. The highway side asks whether you may drive a vehicle across the footway at all, and that is a decision for the highway authority under the Highways Act 1980, not for the planning department. Getting one without the other leaves you with a paved garden you cannot legally reach, or a crossing that serves nothing.
The two consents a driveway needs
The first is planning. A hard surface within the curtilage of a house is usually permitted development under Class F of Part 1 of Schedule 2 to the General Permitted Development Order 2015, but with a condition attached where the surface sits between the principal elevation of the house and a highway. In plain terms, your front garden.
The second is the vehicle crossing itself, the dropped kerb. That is granted under section 184 of the Highways Act 1980 by the local highway authority, which will be the county council in two-tier areas and the unitary or borough council elsewhere. Some authorities call it a crossover or a vehicle access application. The application is made to the highways team, the works are almost always carried out by the authority or a contractor on its approved list, and you pay for them.
A third consent can appear. Where the road you are joining is classified as an A, B or C road, the formation of a new means of access is not covered by the permitted development right, so you need planning permission for the access as well.
The 5 square metre threshold for hard surfaces
The condition on Class F is about run-off. Where the hard surface lies between the principal elevation and a highway, it must either be made of porous or permeable material, or provision must be made to direct water from the surface to a permeable or porous area within your own curtilage.
Alongside that, government guidance on permeable surfacing treats an area of 5 m² or less as too small to worry about. So the practical rule most householders need is this. A front garden surface of more than 5 m² laid in impermeable material, with rainwater running off towards the road, needs planning permission. The same area in permeable block paving, gravel or porous asphalt does not. Nor does an impermeable surface that drains to a lawn, a border or a soakaway inside your boundary.
Back gardens and side returns are not caught by the condition at all, because it applies only to land between the principal elevation and a highway. A corner plot can have two frontages, and the second one counts.
Permeable surfaces and directing run-off
Permeable block paving with an open-graded sub-base is the usual answer and it is the one highway authorities and drainage engineers prefer. The sub-base does the work, storing water in the voids between the aggregate while it soaks away. Skimp on the sub-base and you get a permeable surface sitting on impermeable ground, which performs like a pond.
Gravel over a geotextile is simpler and costs less to lay, though you need an edge restraint and a level threshold so stone does not migrate onto the footway. Resin-bound systems can be permeable if specified as such. Resin-bonded is not. Ask the installer for the product's designation in writing rather than relying on the brochure word.
If you want a solid finish, the alternative route is to lay a cross-fall away from the road into a border, a rain garden or a soakaway. Draw that on a plan before work starts. It is the drawing, not the intention, that answers the question if a neighbour complains later.
Soakaway design in a small front garden
Approved Document H of the Building Regulations sets a drainage hierarchy: soakaway or other infiltration system first, then a watercourse, then a sewer. For a front garden, infiltration is normally the only realistic option.
Do a percolation test before sizing anything. Dig a trial pit, fill it, time the drop, and repeat. Clay subsoil in much of the Midlands and the south east gives infiltration rates so low that a conventional soakaway will not empty between storms, and you will need a larger storage volume or a different approach. BRE Digest 365 sets out the standard sizing method.
Keep a soakaway at least 5 m from the house, which is the usual separation quoted in Approved Document H, and well away from a neighbour's foundations. On a tight frontage that distance is often what kills the idea, and permeable paving across the whole area becomes the sensible choice instead.
Visibility splays and the highway authority
The highway authority is looking at sightlines, not aesthetics. It wants a driver emerging from your drive to see approaching traffic, and pedestrians on the footway to see the car. Manual for Streets sets out the approach to visibility splays on residential streets, measured as a setback distance from the carriageway edge against a sight distance along it. On a 30mph street the numbers are modest. On a faster road they grow quickly, and a hedge or a wall on your boundary may have to come down.
Other things that stop a crossing being approved: a lamp column, a manhole cover, a telecoms cabinet or a tree in the verge, a bus stop or pedestrian crossing nearby, a driveway too short to park a car clear of the footway (commonly taken as around 5 m of depth), and a gradient the vehicle cannot manage without grounding.
Ask the highway authority for its own crossing specification sheet at the outset. Every authority publishes one, and it tells you the construction build-up, the kerb type and the depth it expects.
Trees, roots and the verge
A street tree in the verge belongs to the authority and will almost always be protected in practice. Moving one is expensive and frequently refused. A tree in your own front garden may be covered by a Tree Preservation Order or sit in a conservation area, in which case works to it need consent or six weeks' notice respectively.
Where any tree is close to the new surface, the root protection area matters. BS 5837:2012 defines it by reference to stem diameter, and excavation inside it damages the tree even when nothing above ground is touched. The workaround is a no-dig construction, a cellular confinement system laid over the existing ground with the surface built up rather than dug down. It costs more and it saves the tree. Councils increasingly ask for it as a condition where a protected tree is nearby, and the same principle appears whenever an extension has to work around an existing garden structure.
Sequencing the applications
Do them in this order:
- Check for a classified road, a TPO, a conservation area and any Article 4 direction removing householder permitted development rights.
- Apply to the highway authority for the vehicle crossing, because a refusal here ends the project and the fee is smaller.
- Settle the surface specification and the run-off route once the crossing position is fixed.
- If the surface will be impermeable and drain to the road, apply for planning permission.
- Consider a lawful development certificate if you are relying on permitted development and expect to sell within a few years.
That last point deserves emphasis. A lawful development certificate is the only formal way to confirm that works are lawful, and a buyer's solicitor will ask for one far more readily than the council will volunteer it. The certificate for proposed works costs half the fee of a householder application and takes eight weeks.
Related reading on where incidental use in a front or back garden stops being incidental sits in the notes on garden office planning. If the project grows into a new dwelling or a larger scheme, surface water stops being a paving question and becomes a Drainage Strategy.
Enter your postcode on PlanScope to see which reports your site is likely to need. This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.
Frequently asked questions
Do I need planning permission to pave my front garden?
Only if the new surface is more than 5 square metres, is made of impermeable material, and drains towards the highway. Permeable paving, gravel or porous asphalt is covered by permitted development, and so is a solid surface that drains to a lawn, border or soakaway inside your own boundary. Article 4 directions can remove the right entirely.
Who grants a dropped kerb and how long does it take?
The local highway authority does, under section 184 of the Highways Act 1980. That is the county council in two-tier areas and the unitary or borough council elsewhere. Timescales vary because most authorities carry out a site inspection before quoting for the works. Apply for this first, since a refusal stops the whole project.
Does my driveway need to be a certain length?
Highway authorities generally want a car to stand clear of the footway, which usually means around 5 metres of usable depth measured back from the highway boundary. Shorter drives lead to vehicles overhanging the pavement, which is why applications on shallow frontages are often refused. Check the authority's own vehicle crossing specification sheet for its figure.
What if there is a street tree where I want the crossing?
Street trees in the verge belong to the highway authority and are rarely removed for a private driveway. You may be able to shift the crossing position along the frontage instead. Where a tree stands in your own garden, check for a Tree Preservation Order and for conservation area status before any excavation near its roots.
Should I get a lawful development certificate for the paving?
It is worth it if you are relying on permitted development and may sell within a few years. A lawful development certificate is the only formal way to confirm that works are lawful, and conveyancing solicitors ask for one routinely. The fee for proposed works is half that of a householder application and the target period is eight weeks.
Sources and further reading
This article is general guidance about the planning system in England and, where stated, the rest of the UK. It is not legal or professional advice. Check your local planning authority’s validation requirements and take professional advice for your specific site.