Permeable tarmac driveways in West Sussex

How much does a permeable tarmac driveway cost in West Sussex?

Rates in West Sussex follow the South East, about 10% above our UK midpoint.

Item	Guide price (inc VAT)
Porous asphalt drive on a permeable stone base	£88–£138 per m²
Example: 30 m² drive	£2,900–£4,550
Example: 50 m² drive	£4,400–£6,900
Example: 80 m² drive	£7,050–£11,000

Towns we cover in West Sussex

Postcode areas: BN, PO, RH.

What is included?

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.

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
Porous asphalt binder and surface courses
Edge restraint that does not block the flow

Rules in West Sussex

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.