What to know before a driveway extension in Caernarfon
In and around Caernarfon, village-style frontages sit alongside newer cul-de-sacs, so the right block often depends on the age of the house.
Hilly streets in much of Wales mean many drives slope, which shapes the falls, the edging and the water route.
How much does a driveway extension cost in Caernarfon?
Most driveway extension quotes in Wales fall within £85–£140 per m² including VAT. A 15 m² extension would usually be about £1,450–£2,400, with any extras listed separately on your quote.
| Item | Guide price inc VAT |
|---|---|
| Driveway extension in block paving | £85–£140 per m² |
| Breaking out an old surface | £9.50–£35 per m² |
| Edging or kerb, bedded and haunched | £19–£45 per metre |
| Typical channel drain run | £330–£930 |
| Dropped kerb (vehicle crossover) construction | £930–£2,800 |
Guide figures for Wales, checked 9 November 2026. See all prices or use the guide price tool.
What does a driveway extension involve?
The hard part is the join. Blocks from the same range can differ in shade from a batch made years ago, and older blocks have weathered, so the survey looks at whether a close match is possible, whether lifting and re-mixing some existing blocks will help, or whether a deliberate border or contrasting panel will look better than a near-miss.
- Dig-out and sub-base for the new area
- New edging, kerbs or a low retaining edge where the lawn is cut back
- Check of the existing drive: block range, thickness, levels and condition
- Joint sand, compaction and a clean-down of the old section
- Old edge restraint taken out and the new paving toothed into the old pattern
Before we price your driveway extension
- Ground conditions under the old surface and how deep the sub-base must be
- Edges against lawns, beds, walls and neighbours
- Access for a mini-digger, skip or grab lorry
- Levels against the damp-proof course (the finished paving must sit at least 150 mm below it)
- Block range, thickness, colour and pattern to suit the house
Rules for front drives in Caernarfon
Caernarfon is in Wales, so these rules apply:
In Wales, any new or replacement hard surface at the front of a house should be permeable or drain to a permeable area within the property to avoid needing planning permission. Unlike England, there is no 5 m² allowance for new paving; only repairs of up to 5 m² of existing surface are exempt.
Since January 2019, construction work covering 100 m² or more with drainage implications, including drives and patios, needs approval from the local SuDS Approving Body (SAB) before work starts, even where planning permission is not needed.
A dropped kerb needs your council's approval as highway authority, and a new access onto a classified road needs planning permission.
General guidance, not legal advice. Your survey confirms what applies to your home. See the planning guide.
What happens next
Tell us about the job
Use the form, the quote tool, WhatsApp or a call.
We take a look
A survey visit, or photos for smaller repair and cleaning jobs.
Price in writing
Every line itemised, including the dig, edging and drainage.
Booked and built
Agreed start date, then the work, the final clean-down and the joint top-up.
Why choose Block Paving Contractors
Water planned first
Falls, channels and soakaways are designed before the pattern is chosen.
Itemised quotes
Break-out, waste, edging, drainage and covers are separate lines you can see.
Honest timescales
We tell you how long the job takes and what can delay it, such as approvals and weather.
One point of contact
You deal with one team from survey to sign-off, with work carried out by paving teams working under S&K.
Drive extensions in Caernarfon: questions
Do I need planning permission for a driveway extension in Caernarfon?
In Wales, new front paving should be permeable or drain within your boundary to avoid planning permission, and drives of 100 m² or more need SuDS approval. Ask us on the survey if you are unsure.
Do you cover Bangor, Gwynedd and Holyhead?
Yes. We cover Caernarfon and the places around it, including Bangor, Gwynedd and Holyhead, and the rest of Gwynedd.
How long does a driveway extension take to build?
Most homes take between three and seven working days, depending on size, the dig and the drainage. Your quote gives the expected duration.
How much does a driveway extension cost in Caernarfon?
Our guide for Caernarfon is £85–£140 per m² including VAT, so a 15 m² extension is usually about £1,450–£2,400. Your fixed price follows the survey.
Drive extensions near Caernarfon
Nearby towns we cover for drive extensions, and drive extensions across Gwynedd:
