Cardiff kitchen extensions, designed and built
Cardiff homeowners can use us for the whole kitchen extension project: survey, design, planning or permitted development checks, building regulations and the build itself.
- Guide price in CardiffFrom £25,000 inc VAT
- PlanningWelsh permitted development rules (rear up to 4 m)
- Build time10–16 weeks on site
- Postcode districtsCF5, CF10, CF11, CF14, CF23
Guide prices for Cardiff
These guide figures apply our Wales adjustment (×0.93) to national rates. They include VAT at 20% and cover the build itself; design and council fees are listed separately.
Typical rates in Cardiff: £1,670 to £3,260 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 3 m × 5 m 15 m² | £25,000 – £29,500 | £29,000 – £37,000 | £36,500 – £49,000 |
| 4 m × 5 m 20 m² | £33,000 – £39,500 | £39,000 – £49,500 | £49,000 – £65,500 |
| 4 m × 7 m 28 m² | £46,500 – £55,000 | £54,500 – £69,500 | £69,000 – £91,500 |
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.
Included in a typical project
- Drainage and services designed for sinks, island and appliances
- Kitchen fitting by our team or coordination with your supplier
- Roof lantern or rooflights positioned over the work zones
- Kitchen-led layout planning before the drawings are fixed
- Wide sliding or bifold doors to the garden
Planning rules that apply in Cardiff
In Wales a single-storey rear extension can usually project up to 4 m beyond the rear wall without a planning application, if it is no more than 4 m high, keeps eaves to 3 m and overall height to 4 m within 2 m of a boundary, and covers no more than half the land around the original house. Wales has no larger home extension prior approval scheme.
The planning position for a specific Cardiff address depends on its history and any designations, which is why we check it at the first visit.
The Party Wall etc. Act 1996 applies in Wales as in England: notice must be served before work to a shared wall, building on the boundary, or excavating close to a neighbour's foundations.
Building regulations approval is separate from planning. Wales has its own building regulations and approved documents; the council or a registered building control approver checks the plans, inspects the work and issues a completion certificate.
Applications are decided by the local planning authority (your county or county borough council, or the national park authority).
Local to Cardiff
Across CF5, CF10, CF11, CF14, CF23, CF24, we can visit, measure and advise. Nearby, we also take on projects in Penarth (3 miles), Barry (7 miles), Cowbridge (12 miles).
Just over the Mid Glamorgan border, Caerphilly is about 7 miles away. In Wales, terraced houses with rear offshoots are common in the towns, while detached houses and bungalows dominate in rural areas.
Our process, step by step
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
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
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
The build is managed from start to finish, inspected at each stage and signed off on completion.
Questions people ask about kitchen extensions
Will my neighbours in Cardiff be involved?
If a planning application is needed, the council notifies neighbours. If the work is on or near a shared boundary, party wall notices may also be needed.
Do you cover all of Cardiff?
Yes. We cover Cardiff and the surrounding parts of South Glamorgan. Site visits are free and there is no obligation.
Who do I contract with for a kitchen extension in Cardiff?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
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 £1,670 to £3,260 per m² including VAT. A standard 20 m² kitchen extension is typically around £39,000 to £49,500 in Cardiff, plus the kitchen itself, which commonly adds £9,000 to £20,000 for a mid-range design.
Book a free site visit in Cardiff
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.