Driveway extension Cost Calculator
A UK driveway extension in 2026 typically costs £3,500–£12,000 all-in (including dropped kerb where needed) and adds £6,000–£18,000 in property value — a 1.5–1.8x ROI ratio that makes it one of the highest-return home improvements in 2026. The economics are driven by three things: off-street…
Open the calculator →Price driveway extension in 30 seconds
2 steps, using the figures from our cost guide.
How this calculator works
Every figure in this calculator is the one published in the cost table on our driveway extension guide. Pick the option that matches your job and the calculator returns that published range, adjusted for your region - it does not model anything the guide does not already say.
That is deliberate. A calculator whose rates drift from the page it sits under is worse than no calculator, because two numbers on the same site disagree.
What it cannot know: access, the condition of what is already there, and anything structural. Those are what separate three real quotes from each other.
Published driveway extension costs (2026)
| Option | Typical 2026 cost | Notes |
|---|---|---|
| London | £8,500–£12,500 | |
| South East | £6,500–£9,500 | |
| South West | £5,500–£8,500 | |
| East of England | £5,500–£8,500 | |
| West Midlands | £4,800–£7,800 | |
| East Midlands | £4,500–£7,500 | |
| Yorkshire | £4,500–£7,500 | |
| North West | £4,500–£7,500 |
These are the figures from our driveway extension cost guide.
Driveway extension calculator — FAQs
It uses the same published figures as the cost guide it sits under, adjusted for your region. It is a budgeting estimate, not a quote - only a site visit produces one of those.
Related cost guides
- Driveway extension cost guide — The full price guide
- All driveways services — Browse the hub
- All BestBuilders services — Every trade we cover
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