Planning a driveway extension in Welwyn Garden City
Homes in Welwyn Garden City include plenty of semis and detached houses with room for a drive, plus older terraces where parking is tighter.
Flat ground across much of the East means falls have to be built in carefully so water does not sit on the drive.
How much does a driveway extension cost in Welwyn Garden City?
Expect driveway extensions in Welwyn Garden City to come in at around £95–£160 per m², including VAT at 20%. As an example, a 15 m² extension usually comes to between £1,650 and £2,700.
| Item | Guide price inc VAT |
|---|---|
| Driveway extension in block paving | £95–£160 per m² |
| Breaking out an old surface | £11–£40 per m² |
| Edging or kerb, bedded and haunched | £20–£55 per metre |
| Typical channel drain run | £370–£1,050 |
| Dropped kerb (vehicle crossover) construction | £1,050–£3,150 |
Guide figures for the East of England, checked 9 November 2026. See all prices or use the guide price tool.
What does a driveway extension involve?
The hard part is the join. Blocks from the same range can differ in shade from a batch made years ago, and older blocks have weathered, so the survey looks at whether a close match is possible, whether lifting and re-mixing some existing blocks will help, or whether a deliberate border or contrasting panel will look better than a near-miss.
- Check of the existing drive: block range, thickness, levels and condition
- Matching options: same range, re-mixing old and new, or a planned contrast
- Dig-out and sub-base for the new area
- Joint sand, compaction and a clean-down of the old section
- Old edge restraint taken out and the new paving toothed into the old pattern
What we check on a Welwyn Garden City survey
- Where rain will go: falls, lawn, border, channel or soakaway
- Trees and roots near the drive
- Whether front-garden planning rules apply
- Steps, thresholds and door heights
- Block range, thickness, colour and pattern to suit the house
Rules for front drives in Welwyn Garden City
Welwyn Garden City is in England, so these rules apply:
In England, paving in front of the house that covers more than 5 m² needs planning permission unless it is permeable or drains to a lawn, border or soakaway inside your boundary. Permeable block paving, or standard blocks laid to fall onto a planted strip, avoid the need for permission in most cases.
Flats and maisonettes, listed buildings, and homes covered by an Article 4 direction can have tighter rules, and conservation areas, National Parks and National Landscapes restrict some permitted development.
A dropped kerb needs your local highway authority's approval (usually the county, unitary, metropolitan or London borough council), and a new access onto an A, B or C classified road also needs planning permission.
General guidance, not legal advice. Your survey confirms what applies to your home. See the planning guide.
From enquiry to finished paving
Quick details
Your postcode and the job. It takes a minute.
On-site check
Measurements, levels against the damp-proof course, ground and drainage.
Itemised quote
Fixed once the specification is agreed, with no vague extras.
Laid and finished
Compacted, jointed and handed back clean.
How we work
Edges set in concrete
Every edge restraint is bedded and haunched, so the paving cannot creep.
Itemised quotes
Break-out, waste, edging, drainage and covers are separate lines you can see.
Honest timescales
We tell you how long the job takes and what can delay it, such as approvals and weather.
One point of contact
You deal with one team from survey to sign-off, with work carried out by paving teams working under S&K.
Drive extensions in Welwyn Garden City: questions
How much does a driveway extension cost in Welwyn Garden City?
Our guide for Welwyn Garden City is £95–£160 per m² including VAT, so a 15 m² extension is usually about £1,650–£2,700. Your fixed price follows the survey.
Do you cover Hatfield, Hertford and St Albans?
Yes. We cover Welwyn Garden City and the places around it, including Hatfield, Hertford and St Albans, and the rest of Hertfordshire.
How long does a driveway extension take to build?
Most homes take between three and seven working days, depending on size, the dig and the drainage. Your quote gives the expected duration.
Do I need planning permission for a driveway extension in Welwyn Garden City?
In England, a front drive over 5 m² needs planning permission unless it is permeable or drains to a lawn or border within your boundary. Ask us on the survey if you are unsure.
Drive extensions near Welwyn Garden City
Nearby towns we cover for drive extensions, and drive extensions across Hertfordshire:
- Drive extensions in Hatfield
- Drive extensions in Hertford
- Drive extensions in St Albans
- Drive extensions in Harpenden
- Drive extensions in Stevenage
- Drive extensions in Potters Bar
