Permeable tarmac driveways in Castlereagh

What does a permeable tarmac driveway cost in Castlereagh?

Guide prices below are for Castlereagh, adjusted for Northern Ireland, where surfacing rates run about 12% below our UK midpoint.

Item	Guide price (inc VAT)
Porous asphalt drive on a permeable stone base	£70–£110 per m²
Example: 30 m² drive	£2,300–£3,650
Example: 50 m² drive	£3,500–£5,500
Example: 80 m² drive	£5,650–£8,800

As a 2026 guide in Castlereagh, permeable tarmac driveway work runs at about £70–£110 per m² including VAT, so a 80 m² drive is roughly £5,650–£8,800. Guide only; the survey confirms a fixed price.

The build-up we price

Planning and kerb rules for Castlereagh

In Northern Ireland, the Planning (General Permitted Development) Order (Northern Ireland) 2015 allows a hard surface between the front of a house and a road without permission if it is porous or drains to a porous area within the property, once it exceeds 5 m². Listed buildings and some access changes need permission. Any new or altered vehicle access onto a public road needs approval from DfI Roads, not the council.

What is included in 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
Overflow to a soakaway or border on slow-draining ground
Edge restraint that does not block the flow

Castlereagh: the local details

What applies in Castlereagh. We reach Castlereagh on our County Down survey days; Bangor, County Down is 11 miles away.

Postcodes: BT6, BT5, BT4, BT8
Area: County Down
Nearest towns: Belfast (2 miles), Dundonald (4 miles), Holywood (5 miles), Comber (6 miles)
Pricing: Northern Ireland, about 12% below our UK midpoint
Kerb approvals: DfI Roads

The same service is available in Belfast, Dundonald, Holywood, Comber, Newtownabbey.

Your questions answered

What is the price of a permeable tarmac driveway in Castlereagh?

As a 2026 guide in Castlereagh, permeable tarmac driveway work runs at about £70–£110 per m² including VAT, so a 80 m² drive is roughly £5,650–£8,800. Edging, drainage and a dropped kerb are priced separately where needed.

Do you work in my part of Castlereagh?

We cover Castlereagh including BT6, BT5, BT4, BT8, and nearby Belfast, Dundonald, Holywood.

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

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.

Are there planning or highway rules in Castlereagh?

In Northern Ireland, more than 5 m² of hard surface in front of a house should be porous or drain to a porous area within the property; DfI Roads approves dropped kerbs. Dropped kerbs are approved by DfI Roads.

Other work in Castlereagh

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