New tarmac driveways in Mountain Ash

What does a new tarmac driveway cost in Mountain Ash?

Guide prices below are for Mountain Ash, adjusted for Wales, where surfacing rates run about 5% below our UK midpoint.

Item	Guide price (inc VAT)
New black tarmac drive, full dig-out and new sub-base	£57–£90 per m²
Example: 30 m² drive	£1,900–£3,000
Example: 50 m² drive	£2,850–£4,500
Example: 80 m² drive	£4,550–£7,200

As a 2026 guide in Mountain Ash, new tarmac driveway work runs at about £57–£90 per m² including VAT, so a 80 m² drive is roughly £4,550–£7,200. Guide only; the survey confirms a fixed price.

Do I need permission in Mountain Ash?

In Wales, a new hard surface in front of a house is permitted development only if it is porous or drains to a permeable area within the property; repairing or replacing up to 5 m² of existing hardstanding is allowed without meeting that condition. Separately, since January 2019, construction covering 100 m² or more that affects drainage generally needs approval from the council's SuDS Approving Body (SAB) before work starts, even where planning permission is not needed. Larger drives, shared surfaces and car parks often reach that threshold. If the job needs a dropped kerb, the council as highway authority approves it before any work on the footway.

Where we work in and around Mountain Ash

Mountain Ash at a glance. Smaller towns such as Mountain Ash are surveyed alongside nearby jobs in Mid Glamorgan.

Postcodes: CF45
Area: Mid Glamorgan
Nearest towns: Treharris (3 miles), Rhondda (3 miles), Aberdare (4 miles), Merthyr Tydfil (4 miles)
Pricing: Wales, about 5% below our UK midpoint
Kerb approvals: The council

We also cover nearby Treharris, Rhondda, Aberdare, Merthyr Tydfil, Tonypandy.

What we do on a new tarmac driveway

A new tarmac driveway is built from the ground up: the old surface and soil are dug out, a compacted stone sub-base is laid, then a hot binder course and a finer surface course are spread and rolled, and the edges are held by kerbs or blocks.

Break out and remove the old surface and spoil
Dig to formation level, usually around 230–250 mm below finished height
Geotextile membrane where the ground is soft or clay
MOT Type 1 sub-base laid and compacted in layers, about 150 mm
Falls set so water runs to a channel, gully or soft landscaping

Layer by layer

Your questions answered

How much does a new tarmac driveway cost in Mountain Ash?

As a 2026 guide in Mountain Ash, new tarmac driveway work runs at about £57–£90 per m² including VAT, so a 80 m² drive is roughly £4,550–£7,200. Edging, drainage and a dropped kerb are priced separately where needed.

How long does a new tarmac driveway take in Mountain Ash?

Usually 2–4 working days for a typical drive, longer with drainage or a dropped kerb. We book Mountain Ash surveys alongside other jobs in Mid Glamorgan, and give you dates once the specification is agreed.

Are there planning or highway rules in Mountain Ash?

In Wales, new front hardstanding should be porous or drain to a permeable area within the property, and work covering 100 m² or more with drainage effects usually needs SAB approval first. Dropped kerbs are approved by the council as highway authority.

Will someone visit before I get a fixed price in Mountain Ash?

Yes for new surfacing such as drives, paths, private roads and car parks. Small repairs are often priced from photos; if a visit is needed for a repair-only job, we tell you any charge first.

Other work in Mountain Ash

Questions about new tarmac driveways in Mountain Ash? Call, WhatsApp or use the form, and we'll talk it through.