- 14 May 2026|
- Conservatories
If you are thinking about adding a kitchen conservatory extension, the first question most homeowners ask is simple: how much will it cost?
The honest answer is that prices vary widely, but a typical kitchen conservatory extension in the North East UK costs between £2,000 – £3,000+ per square metre, depending on design, glazing type, roof choice and finish.
This guide gives you a clear, realistic breakdown so you can plan with confidence.
What is a kitchen conservatory extension?
A kitchen conservatory extension combines the open feel of a conservatory with the practical function of a kitchen. Rather than adding a standard brick extension, homeowners use glazed structures to bring natural light flooding into the new internal space, creating a bright, airy kitchen that connects seamlessly with the rest of the house.
It is a genuinely effective way to expand your living area without the heavy cost of a full structural build, and when done well it can add real value to your home.
Average kitchen conservatory extension costs in 2026
Below is a realistic cost breakdown based on size and specification:
| Size | Standard | Premium |
| Small (up to 15m²) | £20,000 – £30,000 | £35,000+ |
| Medium (15-25m²) | £30,000 – £50,000 | £50,000+ |
| Large (25m²+) | £50,000 – £60,000 | £60,000+ |
The upfront cost can feel significant, but when you factor in the added square footage and how a well-designed kitchen conservatory extension increases the value of your home, the numbers often stack up.
What drives the cost of a kitchen conservatory extension?
Roof type
The roof is one of the biggest single factors in your overall budget. A glass roof is the most popular choice for flooding the space with natural light. A solid roof is a more affordable option that also improves insulation and reduces heat loss, making it better suited to a year-round kitchen.
For a kitchen specifically, many homeowners opt for a solid roof with roof lanterns or skylights to balance light with temperature control.
Glazing specification
The glazing you choose affects both price and performance. Modern conservatory builds use double or triple glazing as standard, but the frame material matters too:
- uPVC frames are the most affordable option
- Aluminium frames cost more but offer a slimmer, more contemporary look
Flooring
Kitchen flooring in a conservatory extension needs to handle both foot traffic and the practical demands of cooking. Budget £1,500 – £6,000 depending on whether you choose porcelain tile, engineered wood or polished concrete. Underfloor heating is strongly recommended for a kitchen conservatory and typically adds £1,000 – £3,000.
Plumbing and electrics
A kitchen requires proper plumbing connections and a full electrical fit-out. Plumbing costs for connecting to your existing system typically run from £1,500 – £4,000, while electrical work including sockets, lighting and extraction can add another £1,000 – £3,000.
Do you need planning permission for a kitchen conservatory extension?
Many kitchen conservatory extensions fall under permitted development rights, meaning you do not need to apply for planning approval. However, there are conditions:
- The extension must not cover more than half the garden area
- It must not be taller than the existing roof line
- It must sit at the rear or side of the property
If your property is listed, in a conservation area, or the extension exceeds permitted development limits, you will need full planning permission.
Always check with your local authority before proceeding. At Enhance Conservatories, we can guide you through this process and advise on what applies to your specific property.
Hidden costs homeowners often miss
Taking a closer look at the full picture before you sign anything is always a good idea. Common additional costs include:
- Building regulations approval: typically £900-£1,500
- Kitchen appliances are almost never included in build costs
- Decoration and finishing including paint, blinds and fixtures
Budget a contingency of at least 10-15% on top of your quoted figure for unexpected costs.
Why choose Enhance Conservatories?
At Enhance Conservatories, we design and build kitchen conservatory extensions tailored to how you actually live. Every project starts with a proper site survey, clear pricing and no hidden extras.
Whether you want a modern conservatory with floor-to-ceiling glazing or a solid-roof kitchen extension that connects your home to the garden, our team handles the full process from planning through to completion.
We work across the region and have helped hundreds of homeowners create spaces they genuinely use every day.
Get in touch with our team for a free, no-obligation quote on your kitchen conservatory extension.
Frequently asked questions
How much does a kitchen conservatory extension cost in the UK?
Prices typically range from £20,000 to £50,000+ depending on size, specification and location. A mid-range build for a medium-sized space usually sits between £30,000 and £50,000 fully fitted.
Does a kitchen conservatory extension add value to your home?
Yes. A well-built kitchen conservatory extension can add between 5% and 15% to your property value, though this varies by region and property type.
Do I need planning permission for a kitchen conservatory?
Not always. Most projects fall under permitted development rights, but you should always confirm with your local planning authority before starting work.
How long does it take to build a kitchen conservatory extension?
A typical build takes 6 to 10 weeks from start of works on site to completion, including manufacturing lead times for glazing and frames.