Install a drop kerb.

Installing a drop kerb involves more than just swapping stones; it requires precise engineering to protect underground utilities and ensure the footway remains safe for pedestrians. This guide covers everything from council permits to the final tarmac finish.

What Does the Work Involve?

• Site Survey: Assessing the proposed location for proximity to junctions, trees, lamp posts, and utility covers.
• Council Application: Submitting a formal request to the local Highways Authority for permission to alter the public path.
• Excavation: Digging out the existing pavement and kerb stones to a depth that allows for a reinforced foundation.
• Sub-base Preparation: Laying and compacting a heavy-duty sub-base capable of supporting the weight of vehicles.
• Kerb Installation: Fitting specific "low-profile" kerb stones and transition "taper" stones to bridge the gap between the road and the path.
• Reinstatement: Laying new tarmac or paving to match the existing footway, ensuring a flush finish and proper drainage.

Typical Costs

The cost of a drop kerb varies significantly based on the width of the crossing (usually measured in 'kerb units') and your local council's specific fees. The figures below reflect realistic 2025/26 UK averages for a standard 3-to-4-metre crossing.

Price factors include the thickness of the pavement required by the council, the need to relocate street furniture (like lamp posts), and whether you are in a high-cost area like London or the South East.

How Long Does It Take?

• Council Approval: 4 to 12 weeks. This is the longest part of the process and involves site inspections by highways officers.
• Physical Installation: 1 to 2 days. Most standard crossings are completed within 48 hours once work begins.
• Curing Time: 24 to 48 hours. You should typically avoid driving over the new tarmac until it has fully hardened.

DIY or Professional?

This is not a DIY project. In the UK, it is illegal for an unqualified person to work on the public highway. You must hire a contractor with NRSWA (New Roads and Street Works Act) accreditation, often referred to as "Street Works" certification.

Most local authorities maintain a list of approved contractors; using an unapproved worker can result in the council removing the work at your expense.

Choosing the Right Tradesperson

When hiring a driveway specialist for a drop kerb, look for the following qualifications and ask these specific questions:

• Accreditation: Do they hold a valid NRSWA operative and supervisor card?
• Insurance: Do they have Public Liability Insurance of at least £5 million (often £10 million is required by councils)?
• Experience: Have they worked with your specific local council before?

Questions to ask:

• "Will you handle the traffic management and signing/guarding while the road is dug up?"
• "Does your quote include the cost of disposing of the old kerb stones and spoil?"
• "Can you provide a copy of your NRSWA certificate for my council application?"

UK Regulations

• Section 184 Highways Act 1980: The primary law governing the creation of vehicle crossings over footways.
• Planning Permission: Usually not required unless your property is on a classified road (A, B, or C roads), is a listed building, or is a maisonette/flat.
• Permit to Dig: Your contractor must obtain a "Street Works" permit or "Section 50" license before breaking the surface.

Common Problems

• Utility Interference: Finding gas or water mains too close to the surface can stop a project or significantly increase costs for "sleeving."
• Council Rejection: Applications are often denied if the proposed crossing is too close to a junction or a bus stop.
• Poor Drainage: If the kerb is not installed with the correct fall, water may pool on the pavement or run into your garage.
• Tree Roots: If a mature council-owned tree is within a certain distance (usually 1-3 metres), the application may be refused to protect the root system.

Frequently Asked Questions