Block paved driveway extensions in Mountain Ash: the local picture
Around Mountain Ash, plots are often larger and drives longer, so edging, falls and the route the water takes need planning.
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 Mountain Ash?
In Wales, a driveway extension usually costs £85–£140 per m² including VAT. For a 15 m² extension, that is roughly £1,450–£2,400. Your exact price depends on what the survey or your photos show, and is fixed in writing before anything is booked.
| 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.
- Matching options: same range, re-mixing old and new, or a planned contrast
- 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
- Check of the existing drive: block range, thickness, levels and condition
- Old edge restraint taken out and the new paving toothed into the old pattern
What the survey covers
- Access for a mini-digger, skip or grab lorry
- Ground conditions under the old surface and how deep the sub-base must be
- Trees and roots near the drive
- Where rain will go: falls, lawn, border, channel or soakaway
- Edges against lawns, beds, walls and neighbours
Do you need permission in Mountain Ash?
Mountain Ash 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
Send the basics
Postcode, what you need and a rough size. Photos help.
Survey
We measure, check levels, ground and drainage, and talk through blocks and patterns.
Written quote
An itemised quote with the specification, the price and the start date.
The work
Our paving team builds it to the agreed specification and leaves the site swept.
How we work
Itemised quotes
Break-out, waste, edging, drainage and covers are separate lines you can see.
Water planned first
Falls, channels and soakaways are designed before the pattern is chosen.
Edges set in concrete
Every edge restraint is bedded and haunched, so the paving cannot creep.
The dig and sub-base in writing
Your quote states the depth of dig, the sub-base thickness and how it is compacted.
Drive extensions in Mountain Ash: questions
How much does a driveway extension cost in Mountain Ash?
Our guide for Mountain Ash 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.
Is the survey in Mountain Ash free?
Yes, for new paving here: the survey and written quote are free with no obligation. Repairs and cleaning are usually priced from photos, or from a short visit where needed.
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.
Can you match the blocks to my house in Mountain Ash?
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.
Drive extensions near Mountain Ash
Nearby towns we cover for drive extensions, and drive extensions across Mid Glamorgan:
- Drive extensions in Treharris
- Drive extensions in Aberdare
- Drive extensions in Merthyr Tydfil
- Drive extensions in Nelson, Mid Glamorgan
- Drive extensions in Tonypandy
- Drive extensions in Pontypridd
