Permeable tarmac driveways in Dorset

How much does a permeable tarmac driveway cost in Dorset?

Rates in Dorset follow the South West, about 3% above our UK midpoint.

Item	Guide price (inc VAT)
Porous asphalt drive on a permeable stone base	£82–£129 per m²
Example: 30 m² drive	£2,700–£4,250
Example: 50 m² drive	£4,100–£6,450
Example: 80 m² drive	£6,600–£10,300

Towns we cover in Dorset

Postcode areas: BH, DT.

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
Porous asphalt binder and surface courses
Overflow to a soakaway or border on slow-draining ground
Edge restraint that does not block the flow

Rules in Dorset

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. Any new or widened crossing over the pavement needs approval from the highway authority (the county or unitary council).