Permeable tarmac driveways in Caernarfon

What does a permeable tarmac driveway cost in Caernarfon?

For Caernarfon, we apply the Welsh rate, about 5% below our UK midpoint. Your survey turns these ranges into a fixed price.

Item	Guide price (inc VAT)
Porous asphalt drive on a permeable stone base	£76–£119 per m²
Example: 30 m² drive	£2,500–£3,900
Example: 50 m² drive	£3,800–£5,950
Example: 80 m² drive	£6,100–£9,500

As a 2026 guide in Caernarfon, permeable tarmac driveway work runs at about £76–£119 per m² including VAT, so a 50 m² drive is roughly £3,800–£5,950. Guide only; the survey confirms a fixed price.

What we do on a permeable tarmac driveway

A permeable tarmac drive uses porous asphalt, a mix with fewer fine particles so water passes through the gaps, laid on an open-graded stone base that stores the rain and lets it soak into the ground.

Dig out deeper than a standard drive to fit the storage layer
Geotextile separating layer on the formation
Open-graded permeable sub-base, often Type 3 or 4/20 stone
Overflow to a soakaway or border on slow-draining ground
Edge restraint that does not block the flow

Rules that apply in Caernarfon

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. A vehicle crossing over the footway is a separate approval, from the council as highway authority.

The build-up we price

Where we work in and around Caernarfon

Survey cover and pricing for Caernarfon. Caernarfon is covered on our Gwynedd rounds, 8 miles from Bangor, Gwynedd.

Postcodes: LL55, LL61, LL56, LL60, LL54
Area: Gwynedd
Nearest towns: Bangor (Gwynedd) (8 miles), Holyhead (19 miles)
Pricing: Wales, about 5% below our UK midpoint
Kerb approvals: The council

We also cover nearby Bangor (Gwynedd), Holyhead.

Your questions answered

What is the price of a permeable tarmac driveway in Caernarfon?

As a 2026 guide in Caernarfon, permeable tarmac driveway work runs at about £76–£119 per m² including VAT, so a 50 m² drive is roughly £3,800–£5,950. Edging, drainage and a dropped kerb are priced separately where needed.

Do you cover all of Caernarfon?

We cover Caernarfon including LL55, LL61, LL56, LL60, LL54, and nearby Bangor (Gwynedd), Holyhead.

Is the survey in Caernarfon free?

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.

Are there planning or highway rules in Caernarfon?

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.

More we do in Caernarfon

Tell us what you have in mind for Caernarfon and we'll book a survey and put the specification in writing.