Permeable tarmac driveways in Watford

Permeable tarmac driveway prices in Watford

These Watford 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 Watford, 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.

Layer by layer

Do I need permission in Watford?

In England, householder permitted development (Class F of the 2015 General Permitted Development Order) lets you lay a hard surface in front of a house without planning permission if it is porous, or if the rainwater is directed to a permeable area within the property. If the area is more than 5 m² and neither applies, you need permission. Standard dense tarmac is not porous, so a dense tarmac drive needs a lawn, border, channel to a soakaway or other permeable route for its water. If the job needs a dropped kerb, the highway authority (the county or unitary council) approves it before any work on the footway.

What we do on a permeable tarmac driveway

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

Ground check: how fast does the soil drain?
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

Where we work in and around Watford

Survey cover and pricing for Watford. We cover Watford as part of our regular Hertfordshire rounds.

Postcodes: WD17, WD18, WD24, WD25, WD5
Area: Hertfordshire
Nearest towns: Bushey (2 miles), Rickmansworth (4 miles), Borehamwood (5 miles), Ruislip (6 miles)
Pricing: East of England, about 5% above our UK midpoint
Kerb approvals: The highway authority

We also cover nearby Bushey, Rickmansworth, Borehamwood, Ruislip, Harrow.

Watford: common questions

How long does a permeable tarmac driveway take in Watford?

Usually 3–5 working days. We book Watford surveys alongside other jobs in Hertfordshire, and give you dates once the specification is agreed.

Do you cover all of Watford?

We cover Watford including WD17, WD18, WD24, WD25, WD5, and nearby Bushey, Rickmansworth, Borehamwood.

Do I need permission for a permeable tarmac driveway in Watford?

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).

Is the survey in Watford 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.

Other work in Watford

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