Covering Sevenoaks
Our coverage around Sevenoaks (TN13) also includes Tonbridge (6 miles to the south-east) and Swanley.
Homes in the South East
Housing across the South East mixes inter-war semis, post-war estates and older cottages in villages and market towns, so rear and side extensions, hip-to-gable lofts and garage conversions all come up regularly.
What do you get with a kitchen extension?
A kitchen extension is a single-storey extension designed around a new kitchen, usually creating an open-plan kitchen, dining and family space that opens onto the garden. Planning the kitchen layout at the same time as the building means the drains, steels, windows and power end up where the kitchen needs them.
- Combined building and kitchen layout design
- Drainage, gas and electrics planned to the kitchen layout
- Steelwork, roof, glazing and insulation
What will a kitchen extension cost?
Indicative costs for kitchen extensions. London and the South East usually sit towards the top of each range.
| Kitchen extensions | Guide price incl. VAT |
|---|---|
| Extension build | £2,600 to £4,000 per m² |
| Kitchen supply and fit, mid-range | £10,000 to £20,000 |
| Kitchen supply and fit, high-end | £20,000 to £40,000 |
How is a kitchen extension approved in Sevenoaks?
Projects in England go through two separate checks. Planning (or confirmation that the work is permitted development) comes from the district, borough or unitary council, and building regulations approval comes from the council’s building control team or a registered building control approver. Where work touches a shared wall or digs near a neighbour’s foundations, the Party Wall etc. Act 1996 applies.
In England a single-storey rear extension can often go ahead under permitted development: up to 3 m deep on an attached house or 4 m on a detached one, no higher than 4 m, with eaves no higher than 3 m within 2 m of a boundary.
What should Sevenoaks homeowners check first?
- Extraction to the outside must be planned before the walls go up.
- Worktops are templated after the units are fitted, adding a short gap before completion.
How does the project run?
- Send us the details. Give us a postcode, a rough idea of size and some photos, by phone, form or the guide price tool.
- Free site visit. We measure up, look at access, drains and the structure, and talk through options and budget.
- Price and paperwork. The design is priced line by line, and we submit the planning and building control applications.
- Construction and completion. One site lead co-ordinates every trade through to the building control certificate.
Questions about a kitchen extension in Sevenoaks
How much does a kitchen extension cost?
The build is usually £2,600 to £4,000 per square metre including VAT, and the kitchen adds roughly £10,000 to £40,000 depending on the units, worktops and appliances.
Is underfloor heating worth it?
In large open-plan rooms with big glazed doors it frees up wall space and heats evenly. We include it as an option.
Do you work in Sevenoaks?
Yes. Sevenoaks is within our coverage for kitchen extensions, along with nearby Tonbridge and Swanley.
Kitchen extensions near Sevenoaks
- Kitchen extensions in Tonbridge
- Kitchen extensions in Swanley
- Kitchen extensions in Tunbridge Wells
- Kitchen extensions in Bexley
Learn more about kitchen extensions, or see every project we cover in Sevenoaks.

