Permeable tarmac driveways in Trowbridge

How much should I budget in Trowbridge?

For Trowbridge, we apply the South West rate, about 3% above our UK midpoint. Your survey turns these ranges into a fixed price.

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

As a 2026 guide in Trowbridge, permeable tarmac driveway work runs at about £82–£129 per m² including VAT, so a 80 m² drive is roughly £6,600–£10,300. Guide only; the survey confirms a fixed price.

Rules that apply in Trowbridge

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

Layer by layer

Where we work in and around Trowbridge

The key facts for Trowbridge. Trowbridge is 25 miles from Swindon, and we survey there as part of Wiltshire cover.

Postcodes: BA14, BA15
Area: Wiltshire
Nearest towns: Westbury (4 miles), Melksham (5 miles), Bath (8 miles), Frome (8 miles)
Pricing: South West, about 3% above our UK midpoint
Kerb approvals: The highway authority

The same service is available in Westbury, Melksham, Bath, Frome, Warminster.

What we do on a permeable tarmac driveway

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

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

Questions about permeable tarmac driveways in Trowbridge

What approvals apply in Trowbridge?

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).

Can I get a free survey in Trowbridge?

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.

Do you work in my part of Trowbridge?

We cover Trowbridge including BA14, BA15, and nearby Westbury, Melksham, Bath.

How much does a permeable tarmac driveway cost in Trowbridge?

As a 2026 guide in Trowbridge, permeable tarmac driveway work runs at about £82–£129 per m² including VAT, so a 80 m² drive is roughly £6,600–£10,300. Edging, drainage and a dropped kerb are priced separately where needed.

Other work in Trowbridge

Send us a postcode, a rough size and a photo or two, and we'll come back with survey dates for Trowbridge.