Block paved driveway extensions in Treharris: the local picture
Around Treharris, plots are often larger and drives longer, so edging, falls and the route the water takes need planning.
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.
How much does a driveway extension cost in Treharris?
Expect driveway extensions in Treharris to come in at around £85–£140 per m², including VAT at 20%. As an example, a 15 m² extension usually comes to between £1,450 and £2,400.
| 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 you get with our drive extensions service
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.
- Joint sand, compaction and a clean-down of the old section
- Matching options: same range, re-mixing old and new, or a planned contrast
- Check of the existing drive: block range, thickness, levels and condition
- Dig-out and sub-base for the new area
- Old edge restraint taken out and the new paving toothed into the old pattern
Before we price your driveway extension
- Levels against the damp-proof course (the finished paving must sit at least 150 mm below it)
- Existing manhole and inspection covers, and whether to recess them
- Whether front-garden planning rules apply
- The kerb: is it already dropped, and is it wide enough?
- Where rain will go: falls, lawn, border, channel or soakaway
Do you need permission in Treharris?
Treharris 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.
From enquiry to finished paving
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.
Why choose Block Paving Contractors
Itemised quotes
Break-out, waste, edging, drainage and covers are separate lines you can see.
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.
Repair before replace
If your drive can be fixed or re-laid, we will say so.
Clean finish
The site is swept, the joints are filled and you are shown how to look after the paving.
Drive extensions in Treharris: 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.
Can you match the blocks to my house in Treharris?
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.
How much does a driveway extension cost in Treharris?
Our guide for Treharris 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 Treharris 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.
Drive extensions near Treharris
Nearby towns we cover for drive extensions, and drive extensions across Mid Glamorgan:
- Drive extensions in Nelson, Mid Glamorgan
- Drive extensions in Mountain Ash
- Drive extensions in Pontypridd
- Drive extensions in Merthyr Tydfil
- Drive extensions in Aberdare
- Drive extensions in Tonypandy
