How much does a driveway extension cost in South Glamorgan?
For South Glamorgan, our guide is £85–£140 per m² including VAT, so a 15 m² extension is likely to be £1,450–£2,400. Smaller jobs cost more per square metre because set-up and waste costs do not shrink with the area.
| 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.
Towns we cover in South Glamorgan
Choose a town for local prices and details for drive extensions:
What does a driveway extension involve?
A driveway extension adds paving to an existing drive, usually to fit a second car by taking in part of the front lawn, or to lengthen a drive towards the house or garage. The new section is built on its own sub-base and tied into the old paving so the two act as one surface.
Wales is wetter than most of England, and new front paving has to be permeable or drain within the property, so drainage is designed in from the start.
- Matching options: same range, re-mixing old and new, or a planned contrast
- Check of the existing drive: block range, thickness, levels and condition
- Joint sand, compaction and a clean-down of the old section
- New edging, kerbs or a low retaining edge where the lawn is cut back
- Old edge restraint taken out and the new paving toothed into the old pattern
What the survey covers
- Ground conditions under the old surface and how deep the sub-base must be
- Trees and roots near the drive
- Where an electric vehicle charger cable might run
- Edges against lawns, beds, walls and neighbours
- Access for a mini-digger, skip or grab lorry
Rules for front drives in South Glamorgan
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.
How it works
Quick details
Your postcode and the job. It takes a minute.
On-site check
Measurements, levels against the damp-proof course, ground and drainage.
Itemised quote
Fixed once the specification is agreed, with no vague extras.
Laid and finished
Compacted, jointed and handed back clean.
Drive extensions in South Glamorgan: questions
What happens to my old drive?
It is broken out and taken away by skip or grab lorry, listed as its own line on your quote.
How much does a driveway extension cost in South Glamorgan?
Our guide for South Glamorgan 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.
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.
Can you match the blocks to my house in South Glamorgan?
We bring samples to the survey and suggest blocks and borders that suit the age and brick of the house. Final colour is your choice.
