Tarmac Driveway Cost Calculator UK

A full tarmac driveway installation costs £45 to £90 per m² in the UK, covering excavation, sub base, tarmac and labour. Typical project totals:

Note: Smaller driveways cost more per square metre because the crew, roller and hot box cost roughly the same to bring to site whether they cover 20 m² or 80 m². London and the South East run 10 to 20% above these figures while the North and rural areas often come in lower. Coloured tarmac adds 10 to 20% over standard black.

Tarmac remains the cheapest hard surface driveway in the UK and the fastest to lay, with most domestic jobs finished in 1 to 2 days. If you are comparing exterior resin installations, examine the Resin Driveway Calculator UK or calculate basic slab concrete with the Concrete Calculator UK.

New Installation or Resurface?

This is the biggest money decision on a tarmac drive. If your existing surface is structurally sound underneath, an overlay of fresh tarmac costs just £35 to £55 per m², roughly half the price of a full installation.

An overlay only works when the base is solid, cracking is minimal and there is no tree root heave. Each overlay adds around 30mm of height, so you can realistically only resurface twice before the level creeps up towards your damp proof course. Overlaying a failing base just buys 3 to 5 years before the new surface fails too.

Watch for both mistakes: paying for a full dig out when an overlay would do and being sold a cheap overlay when the base actually needs replacing. Ask the contractor to probe and demonstrate the sub base condition rather than quoting from the kerb. If you are levelling concrete underlayments, check the Self Levelling Compound Calculator UK.

What a Proper Tarmac Driveway Includes

A driveway that lasts 20 years rather than 5 is built in layers:

• Sub base: around 150mm of compacted Type 1 MOT hardcore. This is the layer you never see and the one that determines lifespan.
• Base course: 50 to 60mm of binder tarmac.
• Wearing course: 25 to 40mm surface layer. Upgrading to a 65mm Stone Mastic Asphalt wearing course adds about £10 per m² but stretches lifespan from 12 to 15 years up to 18 to 22.
• Edging: concrete pin kerbs or block edging at £20 to £30 per linear metre stop the tarmac spreading at the sides. Not an optional extra in practice.
• Drainage: channels cost £20 to £40 per metre. Tarmac is not permeable, so the surface needs a fall away from the house and somewhere for water to go. You can calculate brickwork border surrounds with the Plastering Cost Calculator UK.

Planning Rules and Drainage

Since 2008, paving over more than 5 m² of front garden with an impermeable surface requires either drainage that discharges within your own boundary (such as a soakaway or channel to a lawn border) or planning permission. Most tarmac contractors design in compliant drainage as standard, but check it appears on your quote.

If your new driveway needs a dropped kerb to cross the pavement, the council application and works cost £500 to £1,500 depending on your local authority.

Tarmac vs Other Driveway Surfaces

Note: Tarmac wins on price, speed, winter durability and it is the only surface that can be overlaid rather than rebuilt. Its weaknesses are oil and fuel spills, which soften the binder and cause cracking, plus slow UV fading and moss in shaded spots. A reseal every 3 to 5 years keeps it tidy.

If you are estimating aggregate weights, check the Concrete Weight Calculator UK or evaluate your overall project VAT using our VAT Calculator UK or financing options on the Mortgage Calculator UK.