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The costs of building a conservatory

Conservatories can be a great addition to your home if you want some extra space or to add value to the property. But make sure you consider all factors before going ahead, as there can be fees and costs you might not expect.

Planning Permission

The good news for anyone considering a new conservatory or extension is that the limits for planning permission that were due to expire may 2019, have now been made permanent. This means that the requirements to build without planning permission are more relaxed than they have been in the past.

Larger conservatories or extensions (four to eight metres for detached houses, three to six metres for all other houses) must still be approved by the neighbour consultation scheme. Bear in mind though, submitting designs for approval without also applying for planning permission will cost you £96.

Submitting planning permission for a conservatory will currently cost you an average of £206, although this can vary depending on the property and land you are building onto.


Many conservatories can be bought as a DIY kit, containing the materials and instructions for assembly. This is great if you are trying to build on a budget, but the design will be standard to appeal to the greatest possible number of people. You will also need either the tools and skillset to assemble it yourself or to hire a contractor to erect it for you.

The cost of a full height, glass conservatory can start at around £3000 online. Although many companies match competitors quotes, so shop around before you buy in order to get the best price.

For a more comprehensive and tailored design, it is best to contact an architect and have them draw up plans for an extension made to suit your home specifically. For an example of how tailored designs can help you, check out this single storey extension design by KL Architects in 2016.


As mentioned before, an easy, budget-friendly way to build a conservatory is to purchase a DIY conservatory kit and construct it yourself. The main benefit of this is ease.

Costs are generally all included in the price of the package, you should receive only what is eliminates the need for skips, and labour is free if you are able to do it yourself.

However, if you are building a conservatory in any other manner there will be additional costs for transport, waste disposal and labour. This is another example of how hiring an architect can help you. It can be confusing and difficult to find reliable contractors and sources for materials. An architect will be able to guide you through this process.


Material costs vary drastically. You may be able to find suitable second-hand materials for free or very cheap and save on transportation costs if it is available locally. Check out sites such as pre-loved.co.uk, where you can find second-hand construction materials listed for great price.

Alternatively, you could choose to splash the cash and get the highest quality materials delivered as soon as possible. In other words, it is very difficult to put an average cost on the materials necessary.

If you are willing to look around for cheap materials, the costs could be next to nothing – but be prepared to wait for your conservatory if you’re doing this, as these offers can be hard to come by.

Waste disposal can be problematic and expensive depending on the content and quantity of the waste. In many cases of construction, a skip is the easiest way to dispose of waste. The average cost of an off-road 8-yard skip is around £300 including VAT. Be aware that not all waste can be disposed of in a skip, check with the hiring company what is and is not allowed.

When building any conservatory or extension the cheapest route is to do as much of it as you can yourself.

However, this is no small task, only attempt it if you have the skills necessary. The most secure route is to hire an architect who can design the conservatory or extension to meet your specific needs, guide you through the process, and advise you of the best contractors and materials.

If you are looking to add a conservatory or extension to your home, get in touch with a member of the team for professional, tailored advice.



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Studio 2 4 The Highlands Exning Newmarket Suffolk CB8 7NT
T: 01638 662393
The costs of building a conservatory