How much does a conservatory cost?

Conservatory quick cost guide

This guide walks you through everything from choosing the right conservatory style for your home to understanding when you do and do not need planning permission. So you can factor the right stuff into your budget from day one.

In this cost guide we will talk about:

1. Is a conservatory worth the cost?
2. Conservatory average cost
3. Different conservatory materials and costs
4. Planning permission for a conservatory costs
5. Additional conservatory costs to avoid
6. Find conservatory installers near you on MyBuilder
7. FAQ: Common questions about conservatory costs

Is a conservatory worth the cost?

A conservatory is a beautiful home improvement project that expands your living space by creating a light-filled sunroom, typically opening up to your garden or outdoor area.

They add flexibility to your home, serving as a welcoming lounge, stylish dining room or productive home office. They can also add value to your home.

If you're looking to expand your living space, you might also be interested in other home extensions, such as a garden room. You can explore more about garden room costs to help you make your choice.

Average conservatory cost

On average, the cost of a conservatory in the UK ranges from £9,000 to £25,000. This range is so large because there’s so many different styles of conservatory:

Basic designs, like the lean-to conservatory, tend to be on the lower end of the scale, with an average cost of £11,625. Complex styles, such as a P-shaped conservatory, may reach up to £16,750 or more.

To keep your conservatory project on budget, factor in key costs like size, materials, foundations, and any planning fees early on.

Post a job on MyBuilder today to connect with tradespeople near you, get the advice you need, request quotes and hire with confidence. All from the convenience of your smartphone.

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Different conservatory materials and costs

Whether it’s a traditional wooden extension, or a robust aluminium one, the materials you select for your conservatory extension can greatly influence both initial costs and long-term maintenance.

Some materials may have a lower upfront cost but could require more maintenance over time, while others might be pricier initially but offer better durability and energy efficiency.

Material	Description & Estimated Cost
uPVC	£10,000
Aluminium	£15,000
Timber	£20,000

Additionally, the choice of glass and frames for your conservatory can impact both energy efficiency and the total cost.

For example:

Double or triple glazing is often recommended for better insulation, reducing energy bills in the long term.

Frame materials, such as aluminium or timber, also affect the overall aesthetic and cost of your conservatory extension.

If you’re not sure what style and materials you want to go for, it’s always best to talk to a professional in your area. Just post your job on MyBuilder today, and conservatory installers near you can get back in touch with their advice and services. It’s quick, easy and free.

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Planning permission for a conservatory costs

Before starting your conservatory extension, check if planning permission is required. In most cases, conservatories are permitted developments, but exceptions apply.

Key situations where you may need planning permission:

• Height limits: If your extension exceeds the maximum height, planning permission will be required.
• Proximity to boundaries: Extensions that are closer than a metre to your neighbour’s boundary may need approval.
• Designated land: Conservatories built on designated land require planning permission.
• Size and scale: Large conservatories that alter the property's appearance may require consent.

If you need more information on planning permission costs, you can refer to our detailed guide on planning permission costs. It's always a good idea to check with your local authority before proceeding with any building work to ensure compliance.

Additional conservatory costs to avoid

In addition to the basic construction and materials, there are several additional costs that may arise during the process of extending your conservatory.

Underfloor heating: Adds year-round comfort but significantly raises costs, often by several thousand pounds depending on size.​

Lighting installation: Custom options enhance ambiance and usability, though they increase the overall budget.​

Planning permission fees: Required for non-permitted developments; budget for application costs and potential professional drawings.​

Building regulations approval: Involves inspections and certification fees to meet safety standards.​

Bespoke finishes: High-end flooring, furniture or fittings elevate style but command a premium price

For inspiration on enhancing your space, consider exploring creative conservatory extension ideas, which could help you visualise and plan additional features or upgrades that add both value and comfort to your conservatory.

MyBuilder Tip: Always budget for unexpected costs, such as project delays or alterations, to ensure your conservatory extension stays within your financial plan.

Find conservatory installers near you on MyBuilder

MyBuilder is the quick and easy way to find conservatory installers near you. Just post your job, including any details, images and questions you have, and a conservatory installer will be in touch. You can also review their profiles, read customer reviews and see images of their previous conservatory projects. Then, it’s simple to hire with confidence.

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FAQ: Common questions about conservatory costs

Do I need planning permission to extend a conservatory and how can I find out?

Most conservatory extensions fall under Permitted Development Rights, meaning no planning permission is required if certain criteria are met. However, different rules apply for listed buildings and areas of outstanding natural beauty. Check with your local council or use the Planning Portal for guidance.

How does the design of a conservatory extension impact its cost?

The design complexity affects the cost. Simpler, rectangular designs are cheaper than those with custom features like gable-ended roofs or bespoke windows. Custom joinery and unique features can increase labour costs and extend timelines.

Are there more affordable options for a conservatory extension project?

Yes, you can reduce costs by opting for uPVC materials, a simpler design and standard sizes for windows and doors. Comparing quotes from multiple contractors and exploring financing options can also help manage the budget.

What common challenges should I expect during a conservatory extension process?

Expect potential delays due to weather, unexpected costs from ground conditions and complexities with permissions, especially in conservation areas. There may also be some disruption during construction. Effective planning and communication with your contractor can minimise these challenges.