Kitchen Extension
A kitchen extension is one of the most impactful home improvements you can make — creating a large, open kitchen-diner that functions as the heart of the home. Options range from a simple internal wall removal (kitchen knock-through) to a full single-storey rear extension.
Extensions require building regulations approval and in many cases planning permission. Most reputable builders and kitchen companies manage this process as part of the project. Getting 3 quotes at an early stage is important to understand the full cost before committing.
What affects the cost of Kitchen Extension?
Prices vary between professionals depending on several factors. Getting 3 quotes gives you a clear picture of the market rate for your specific job.
- Kitchen size — more units, worktops, and appliances means more fitting time and materials.
- Materials and finish — solid wood or handleless cabinets cost significantly more than standard flat-pack.
- Plumbing and electrics — moving the sink, adding an island, or rewiring adds specialist costs.
- Appliances — whether appliances are supplied and installed as part of the quote affects the total.
- Existing condition — stripping out a solid old kitchen or dealing with hidden issues adds labour time.
Use our free quote form to get up to 3 accurate prices — no obligation to book.
Tips for a better quote
A clear brief leads to more accurate quotes and fewer surprises on the day. Here’s how to prepare:
- Be specific about the scope — include dimensions, photos, or a task list where relevant.
- Note access requirements — parking restrictions, working hours, or key-holding arrangements.
- Clarify materials — confirm whether you expect the professional to supply materials or labour only.
- Ask about a guarantee — many professionals offer a workmanship guarantee; it is worth asking upfront.
What’s involved
-
✓
Structural assessment and calculation of steel or RSJ beam required for wall removal
-
✓
Building regulations application and inspections throughout the build
-
✓
Demolition of existing external wall and foundation preparation for extension
-
✓
Building the extension shell including roofing, glazing and bi-fold or sliding doors
-
✓
First and second fix plumbing, electrics, heating and final kitchen fitting
Typical costs
Typical cost: internal wall removal £1,500–£4,000. Single-storey rear extension (3m depth): £25,000–£50,000+. Bi-fold or bifold door addition: £3,000–£8,000.
Prices vary by location, property size and exact scope. Compare 3 quotes for the most accurate price for your specific job.
FAQs — Kitchen Extension
How do I find a Kitchen Extension professional near me?
Use our free quote form — describe the job and your postcode and hear back from up to 3 local professionals within 24 hours. Everyone in our network is independently vetted.
How much does Kitchen Extension cost?
Costs vary depending on the size and complexity of the job. Getting 3 quotes lets you compare prices before committing to anyone.
Is the service really free?
Yes — completely free to use. We only charge professionals a small fee when they win work, so it costs you nothing.
How quickly will I hear back?
Most customers hear back from at least one local professional within 24 hours of submitting a request.
Do I need to be at home during the work?
It depends on the job. Many customers arrange key access or have a neighbour present. Your professional will confirm access requirements when they contact you.
Are professionals insured?
All professionals in our network carry public liability insurance. We recommend confirming the level of cover directly with your professional before work begins.