Planning a driveway extension in Carshalton
Carshalton is a sizeable town with a mix of semis, terraces and newer estates, and many drives here were first laid decades ago.
Many London streets have controlled parking and narrow frontages, so we measure the car space and the crossover before anything else.
How much does a driveway extension cost in Carshalton?
In London, a driveway extension usually costs £110–£180 per m² including VAT. For a 15 m² extension, that is roughly £1,850–£3,100. Your exact price depends on what the survey or your photos show, and is fixed in writing before anything is booked.
| Item | Guide price inc VAT |
|---|---|
| Driveway extension in block paving | £110–£180 per m² |
| Breaking out an old surface | £12–£50 per m² |
| Edging or kerb, bedded and haunched | £25–£60 per metre |
| Typical channel drain run | £420–£1,200 |
| Dropped kerb (vehicle crossover) construction | £1,200–£3,600 |
Guide figures for London, checked 9 November 2026. See all prices or use the guide price tool.
What does a driveway extension involve?
A driveway extension adds paving to an existing drive, usually to fit a second car by taking in part of the front lawn, or to lengthen a drive towards the house or garage. The new section is built on its own sub-base and tied into the old paving so the two act as one surface.
- New edging, kerbs or a low retaining edge where the lawn is cut back
- Dig-out and sub-base for the new area
- Old edge restraint taken out and the new paving toothed into the old pattern
- Matching options: same range, re-mixing old and new, or a planned contrast
- Joint sand, compaction and a clean-down of the old section
What we check on a Carshalton survey
- Where an electric vehicle charger cable might run
- Access for a mini-digger, skip or grab lorry
- Edges against lawns, beds, walls and neighbours
- Existing manhole and inspection covers, and whether to recess them
- The kerb: is it already dropped, and is it wide enough?
Rules for front drives in Carshalton
Carshalton 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.
How it works
Send the basics
Postcode, what you need and a rough size. Photos help.
Survey
We measure, check levels, ground and drainage, and talk through blocks and patterns.
Written quote
An itemised quote with the specification, the price and the start date.
The work
Our paving team builds it to the agreed specification and leaves the site swept.
Why choose Block Paving Contractors
Clean finish
The site is swept, the joints are filled and you are shown how to look after the paving.
Edges set in concrete
Every edge restraint is bedded and haunched, so the paving cannot creep.
The dig and sub-base in writing
Your quote states the depth of dig, the sub-base thickness and how it is compacted.
Honest timescales
We tell you how long the job takes and what can delay it, such as approvals and weather.
Drive extensions in Carshalton: questions
Is the survey in Carshalton free?
Yes, for new paving here: the survey and written quote are free with no obligation. Repairs and cleaning are usually priced from photos, or from a short visit where needed.
How much does a driveway extension cost in Carshalton?
Our guide for Carshalton is £110–£180 per m² including VAT, so a 15 m² extension is usually about £1,850–£3,100. Your fixed price follows the survey.
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.
Can you match the blocks to my house in Carshalton?
We bring samples to the survey and suggest blocks and borders that suit the age and brick of the house. Final colour is your choice.
Drive extensions near Carshalton
Nearby towns we cover for drive extensions, and drive extensions across Greater London:
- Drive extensions in Sutton
- Drive extensions in Mitcham
- Drive extensions in Morden
- Drive extensions in Croydon
- Drive extensions in South Croydon
- Drive extensions in Purley
