High Wycombe, Buckinghamshire
Kitchen Extension in High Wycombe
A kitchen extension creates a modern, open-plan living and dining space, typically extending the rear of the property to accommodate a larger kitchen area.
Estimated Cost
£33,480 – £54,000
Based on 18m² at local rates
10–16 weeks typical duration
Planning permission: Usually not required
Cost Breakdown for Kitchen Extension
Estimated costs for a typical 18m² kitchen extension project, adjusted for local labour and material rates.
| Category | Low Estimate | High Estimate |
|---|---|---|
| Foundations & Groundworks | £4,018 | £6,480 |
| Structural Walls | £5,022 | £8,100 |
| Roof Structure & Covering | £3,348 | £5,400 |
| Windows & Doors | £2,678 | £4,320 |
| Plumbing & Drainage | £2,678 | £4,320 |
| Electrical Installation | £2,009 | £3,240 |
| Plastering & Rendering | £2,009 | £3,240 |
| Flooring | £1,674 | £2,700 |
| Kitchen/Bathroom Fitting | £3,348 | £5,400 |
| Decoration & Finishing | £1,674 | £2,700 |
| Professional Fees | £3,348 | £5,400 |
| Contingency (10%) | £1,674 | £2,700 |
| Total Estimated Cost | £33,480 | £54,000 |
* Costs are estimates based on regional averages and may vary depending on specification, access, and site conditions. Prices include VAT at 20%.
Frequently Asked Questions
Get an Accurate Quote for Your Kitchen Extension in High Wycombe
These are estimated costs based on regional averages. For a personalised, expert-backed quote tailored to your specific project, use our free quote calculator.
Get Your Free QuoteKitchen Extension Costs in Nearby Cities
Compare kitchen extension costs in cities near High Wycombe.