Kitchen extensions across Welling
If you live in Welling and want more space without moving, a kitchen extension is one of the most practical ways to get it. We handle the drawings, approvals and the build.
- Guide price in WellingFrom £35,000 inc VAT
- PlanningOften permitted development (3–4 m), or prior approval up to 6–8 m
- Build time10–16 weeks on site
- Postcode districtsDA6, DA7, DA15, DA16, SE2

Planning and approvals in Welling
In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.
The planning position for a specific Welling address depends on its history and any designations, which is why we check it at the first visit.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.
Applications are decided by the local planning authority (your district, borough or unitary council).
Covering Welling
Our survey diary covers Welling, including DA6, DA7, DA15, DA16, SE2, SE18. The same team covers Abbey Wood (2 miles), Plumstead (2 miles), Bexley (2 miles), Eltham (3 miles), all within easy reach.
For homes towards Kent, Dartford is around 5 miles away. In London, space is at a premium and gardens are often short, so side returns, wraparounds and carefully planned rear extensions tend to make the most of every metre.
What should I budget for a kitchen extension in Welling?
These guide figures apply our London adjustment (×1.3) to national rates. They include VAT at 20% and cover the build itself; design and council fees are listed separately.
Typical rates in Welling: £2,340 to £4,550 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 3 m × 5 m 15 m² | £35,000 – £41,000 | £40,500 – £52,000 | £51,500 – £68,500 |
| 4 m × 5 m 20 m² | £46,500 – £55,000 | £54,500 – £69,000 | £68,500 – £91,000 |
| 4 m × 7 m 28 m² | £65,500 – £76,500 | £76,000 – £96,500 | £96,000 – £127,500 |
Build cost only. A mid-range kitchen, supplied and fitted, typically adds £9,000 to £20,000.
Want a range for your exact size? The guide-price tool takes about a minute.
What is included
- Wide sliding or bifold doors to the garden
- Extraction routes and ventilation for building regulations
- Roof lantern or rooflights positioned over the work zones
- Drainage and services designed for sinks, island and appliances
We start with the working triangle and the island, then set the doors, glazing and roof lights around it. Getting this order right avoids the classic mistakes: a sink against a blank wall, glare on the hob or a fridge blocking the garden view.
From first visit to completion
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
Fixed written price
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Your questions about a kitchen extension in Welling
How long does a kitchen extension take to build in Welling?
On site, typically 10 to 16 weeks once approvals are in place. Before that, allow 4–12 weeks design and approvals.
Do I need building regulations approval in Welling?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
Will my neighbours in Welling be involved?
If a planning application or prior approval is needed, the council notifies neighbours. If the work is on or near a shared boundary, party wall notices may also be needed.
Can you fit a kitchen I buy elsewhere?
Yes. We can fit it or work with your supplier’s fitters. We need the layout early so that drains, services and lighting are in the right place.
How much does a kitchen extension cost?
For the extension itself our guide range is about £2,340 to £4,550 per m² including VAT. A standard 20 m² kitchen extension is typically around £54,500 to £69,000 in Welling, plus the kitchen itself, which commonly adds £9,000 to £20,000 for a mid-range design.
Book a free site visit in Welling
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.