Wales · Drainage

Drainage for block paving in Gwynedd

Drainage for block paving in Gwynedd: the groundwork that makes a block drive legal, dry and tidy, planned before the first block goes down.

  • 3 towns listed
  • £330–£930 inc VAT
  • Free survey for new paving
Linear channel drain with a steel grating across a block paved driveway in front of a garage

How much does a drive drainage job cost in Gwynedd?

Guide price in Gwynedd£330–£930Including VAT at 20%

Guide price in Gwynedd: £330–£930 including VAT. These are Wales guide figures; the survey or your photos confirm the real price before you commit.

ItemGuide price inc VAT
Channel drain run across a drive£330–£930
Edging or kerb, bedded and haunched£19–£45 per metre
Typical channel drain run£330–£930
Soakaway£840–£1,850
Highway authority dropped kerb application fee£50–£470

Guide figures for Wales, checked 9 November 2026.

Towns we cover in Gwynedd

We quote drainage in every town across Gwynedd, including:

What does a drive drainage job involve?

Drainage for block paving makes sure rain leaves the surface in a controlled way: falls in the paving direct it, channel drains collect it across openings, and a soakaway or approved connection takes it away. Standard block paving sheds most of its rain, so a drive without a plan for the water ends up with puddles, wet thresholds or water running onto the pavement.

Hilly streets in much of Wales mean many drives slope, which shapes the falls, the edging and the water route.

  • Levels survey and a falls plan
  • Linear channel drains with gratings rated for cars
  • Connection to an existing surface water gully where permitted
  • Soakaway crates or rubble soakaways where ground allows
  • Threshold drainage at doors and garages

What the survey covers

  • How the new work ties into the paving
  • Ground conditions for any soakaway
  • Load ratings needed for covers and gratings
  • Who must approve the work and how long that takes
  • Levels of the pavement, kerb and drive

Rules for front drives in Gwynedd

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

  1. Tell us about the job

    Use the form, the quote tool, WhatsApp or a call.

  2. We take a look

    A survey visit, or photos for smaller repair and cleaning jobs.

  3. Price in writing

    Every line itemised, including the dig, edging and drainage.

  4. Booked and built

    Agreed start date, then the work, the final clean-down and the joint top-up.

Drainage in Gwynedd: questions

Can this be done at the same time as a new drive in Gwynedd?

Yes, and it usually should be, so the levels match and the paving is only disturbed once.

Who approves a drive drainage job in Gwynedd?

For a dropped kerb, your council as highway authority. For drainage and covers on private land, no approval is usually needed, but connections to public sewers need the water company's consent.

How much does a drive drainage job cost in Gwynedd?

Guide price: £330–£930 including VAT. The survey confirms the work needed.

Do you work in Bangor, Gwynedd, Holyhead and Caernarfon?

Yes. We cover all of Gwynedd, including Bangor, Gwynedd, Holyhead and Caernarfon.

Neighbouring areas

Next step

Get a guide price in two minutes

Answer four quick questions for an instant guide price, then book a free survey to fix it in writing. Repairs and cleaning can often be priced from photos.

Hands laying charcoal paving blocks in herringbone on a sand bed
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