Permeable tarmac driveways in Harpenden

Permeable tarmac driveway prices in Harpenden

These Harpenden guide prices reflect rates in the East of England, about 5% above our UK midpoint.

Item	Guide price (inc VAT)
Porous asphalt drive on a permeable stone base	£84–£131 per m²
Example: 30 m² drive	£2,750–£4,350
Example: 50 m² drive	£4,200–£6,550
Example: 80 m² drive	£6,700–£10,500

As a 2026 guide in Harpenden, permeable tarmac driveway work runs at about £84–£131 per m² including VAT, so a 50 m² drive is roughly £4,200–£6,550. Guide only; the survey confirms a fixed price.

The build-up we price

What the price covers

Open-graded porous asphalt on a deep permeable stone base, so rain soaks through on site.

Ground check: how fast does the soil drain?
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

Covering Harpenden

What applies in Harpenden. Harpenden is 11 miles from Watford, and we survey there as part of Hertfordshire cover.

Postcodes: AL5, AL3
Area: Hertfordshire
Nearest towns: St Albans (5 miles), Luton (5 miles), Hemel Hempstead (6 miles), Welwyn Garden City (7 miles)
Pricing: East of England, about 5% above our UK midpoint
Kerb approvals: The highway authority

The same service is available in St Albans, Luton, Hemel Hempstead, Welwyn Garden City, Hatfield.

Rules that apply in Harpenden

In England, a new hard surface over 5 m² in front of a house needs planning permission unless it is porous or drains to a lawn, border or soakaway within the property. If the job needs a dropped kerb, the highway authority (the county or unitary council) approves it before any work on the footway.

Harpenden: common questions

Which Harpenden postcodes do you cover?

We cover Harpenden including AL5, AL3, and nearby St Albans, Luton, Hemel Hempstead.

Will someone visit before I get a fixed price in Harpenden?

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.

What approvals apply in Harpenden?

In England, a new hard surface over 5 m² in front of a house needs planning permission unless it is porous or drains to a lawn, border or soakaway within the property. Dropped kerbs are approved by the highway authority (the county or unitary council).

How much does a permeable tarmac driveway cost in Harpenden?

As a 2026 guide in Harpenden, permeable tarmac driveway work runs at about £84–£131 per m² including VAT, so a 50 m² drive is roughly £4,200–£6,550. Edging, drainage and a dropped kerb are priced separately where needed.

Other work in Harpenden

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