Curious about how much to budget for your new conservatory?

We break down the costs for you to help you plan your new space.

A new conservatory can provide your home with a gorgeous sun-soaked living space to admire views of the garden all year round. However, there are various factors that will affect the cost of a brand-new conservatory, ranging from the size of the structure to the frame material. Design complexity and the amount of building work that’s required will also impact the overall cost. 

“There are various ways to design a conservatory, which all affect the price,” says Steve Rawding, sales and marketing director at SEH BAC. “For instance, whether you choose an aluminium or uPVC frame will affect the cost, as will whether you have walls that are fully glazed, full height, or dwarf.”  

Here, we investigate the numerous factors that will play a role in determining the cost of a new conservatory, as well as exploring the ways you can keep costs to a minimum. 

lean to conservatory on a extended bungalowCredit: Mozolowski & Murray
Featuring a handsome hardwood frame, this sleek lean-to structure was designed, supplied and installed by Mozolowski & Murray

How much does a new conservatory cost?

The style of conservatory you choose will impact costs

Conservatories come in a plethora of shapes and sizes, and it’s worth bearing in mind that a more complex design – especially one that’s tailor-made to your requirements – will add to the cost.  

“All of our conservatories and glass extensions are bespoke, so it’s hard to give a figure, but typically one of our smaller uPVC conservatories measuring 3m [9ft 10in] x 3m [9ft 10in] would start at around £25,000,” says Stephanie Alexander, marketing manager at Room Outside 

Choosing an off-the-shelf style is one way to make a potential saving. “Off-the-shelf conservatories may be more likely to start at around £10,000,” says Alexander. 

Here’s a breakdown of ballpark costs for different conservatory styles: 

Victorian

Designed to reflect the decorative style of Victorian architecture, this type of conservatory features multi-faceted walls and a steeply pitched roof. Ornate roof crestings and other elegant decorative features mean that this type of conservatory is likely to cost around £12,750 with a uPVC frame and £16,750 for a wood frame. These costs are based on a 3.5m (11ft 6in) x 3.5m (11ft 6in) structure, using figures collected by Checkatrade 

Edwardian

This conservatory style provides the perfect blend between modern and traditional, featuring a square or rectangular floorplan with a ridged roof, unlike a Victorian structure, which has a more bay-like appearance. Checkatrade estimates an average cost of £11,250 for a uPVC structure and £15,750 for a wooden frame, based on a 3.5m (11ft 6in) x 3.5m (11ft 6in) conservatory.

Hipped-back

Also known as a double-hipped conservatory, this style features a double pitched roof, similar to two Edwardian conservatories joined back-to-back. Conservatory Land suggests a starting price of £9,421 for a hipped-back Edwardian conservatory measuring 3m (9ft 10in) x 3m (9ft 10in), including the supply of the windows, doors and roof.

Lean-to

Featuring clean lines and a simple box-like plan, this style is ideal for homeowners who want to establish a more modern look. Typically, this type of conservatory comes with a square or rectangular plan and a single sloping roof, with its tallest side resting against the wall of the original property. GreenMatch estimates an average cost of £12,300 for a fitted uPVC lean-to conservatory with a polycarbonate roof, up to around £20,355 for one with a wooden frame and solid tiled roof. 

Orangery

This type of structure is designed with luxury in mind. It typically features a flat roof with a glazed lantern to let light stream in from above. Rather than incorporating glass walls, orangeries usually come with solid walls and large windows for those all-important garden views. As an orangery represents a hybrid between a conservatory and an extension, it tends to cost more. GreenMatch estimates the average cost of an orangery to be around £19,000. How much you pay will come down to a variety of factors, including craftsmanship, which could see an orangery cost upwards of £30,000.

Building works will increase your budget

Don’t forget to factor in construction costs

It’s important to factor in the cost of construction, too. It’s worth bearing in mind that some companies provide conservatory frames (including windows, walls and roof) on a supply-only basis, while others will also do the building work and installation for you, so be sure to check what’s included in your quote – more on this later. 

“A rough guide for the building works, including foundations, construction and installation, may range from £10,000 to £20,000,” says Virginia Murray, director of sales and marketing at Mozolowski & Murray. “These figures can vary greatly based on location, soil conditions and other factors. By entrusting a reputable company, homeowners can save money in the long term through superior workmanship and avoiding unexpected costs.” 

Be sure to check whether your quote for labour includes electrics and plumbing, too – for example, if your conservatory/orangery will be used as the kitchen.  

If your project involves making a new opening from the house to the conservatory, you’ll also need to factor in the cost of knocking through the wall. According to Tradesmen Costs, the average cost of removing a load-bearing wall is between £1,300 and £1,800, while the addition of a concrete lintel costs approximately £85 per metre. 

Budget for frame material

Costs for frame material vary hugely

The frame material you choose for your conservatory will have a huge impact on the cost. uPVC and wood are the most common solutions, though aluminium frames are also available.  

“Expect to budget around £7,000 to £10,000 or more for a basic uPVC lean-to design, rising to around £20,000 or more for supply-only hardwood,” says Murray. “Hardwood is typically the priciest option due to its durability and customisability, while uPVC is the least expensive and aluminium falls in between.” 

Remember to factor in the cost of maintaining your frame, as well as the initial supply costs. uPVC requires little maintenance, while wooden frames will require periodic re-painting or re-staining to keep them in tip-top condition. 

Other cost considerations

Regional price variations mean the amount you’ll pay for labour will differ depending on where you live. Rates in London and the South East are the highest.  

If you’re buying your conservatory frame on a supply-only basis, and engaging the services of a separate contractor to erect it, remember to seek quotes from at least three different companies to compare costs. 

The fluctuating cost of materials is also likely to influence the cost of your conservatory project. The pandemic disrupted the supply and demand of materials, including timber, the cost of which has soared in the past three years. 

The square footage of your new conservatory will directly impact material and labour costs for the project. “Essentially, the larger the space, the more materials will be required for construction. This includes the framing material, glazing, flooring and any other design elements,” says Murray. Naturally, if you’re using more materials to build your conservatory, the project will end up costing more. A bigger structure might also require more complex design and engineering considerations. 

The scope of your scheme depends on the amount of construction that needs to be done. For instance, if you’re replacing a dated conservatory with a new structure, but already have solid foundations in place, it’s possible that you can save on costs by re-using this existing base. You might also be able to save on knocking through to create a new opening between the house and conservatory. If you’re doing it all from scratch, this will drive up costs.  

To pave the way for success, it’s smart to bring in a professional from a specialist conservatory supplier to survey your property and talk you through the various options.

Typically, more traditional styles that require a higher level of craftsmanship (for example Victorian and Edwardian) cost more than simple styles with clean lines (for example, a lean-to). The type of glass you choose will also impact on the cost – though this is certainly an area worth investing in if you want to enjoy the structure all year round.  

“Glass is now a considerable portion of the cost,” says Alex Hewitt, marketing director at Ultraframe. “Be careful to specify the right glass – the most expensive is not always the best. For example, high solar rejection glass is very expensive. While you will need this in a south-facing conservatory, you don’t need this feature in a north-facing or shady conservatory.” 

Remember to budget for any additional or finishing works, such as decorating or plastering interior dwarf walls, if they’re part of your design. Always check what’s included on the quote from your supplier, as you don’t want to be taken by surprise if these elements are not included in the breakdown. 

What should a new conservatory quote include?

Make sure all quotes are based on the same criteria

Some companies provide conservatory frames (walls, roof, floors) on a supply-only basis, not including foundations or installation. Others offer a supply and installation service, where everything is included under a single quote, so it’s worth ascertaining exactly where you stand with your potential supplier before getting too far into your project. 

“A quote will generally include the structure and installation, but may not include base works, final painting, floor finishes and electrics,” says Lisa Morton, director at Vale Garden Houses. Other details to check include any warranty information, the timeline and estimated completion date, plus any site preparation costs (including foundations and any potential landscaping).  

Make sure all your quotes are based on the same criteria, so that you can compare like for like. 

What is the cheapest way to build a conservatory?

A uPVC lean-to will keep costs down

If you’re working with a tight budget, there are various ways you might be able to keep costs down. For example, choosing a simple lean-to structure with a uPVC frame rather than hardwood will help keep costs to a minimum. “While hardwood frames are beautiful, they cost a lot more than uPVC and ultimately you can create a very similar design to the hardwood,” says Alexander. 

Rebecca Foster

Written by Rebecca Foster she/her

Published:

Rebecca began her journalism career writing for a luxury property magazine in Bangkok, before re-locating to London and becoming a features editor for a self build magazine. She is an experienced homes and interiors journalist and has written for many homes titles, both in print and online. She has expertise on a wealth of topics — from oak frame homes to kitchen extensions. She has a passion for Victorian architecture; her dream is to extend an 1800s house.