Pricing
Garden room prices can vary considerably depending on the size, specification and the options you choose. At Cosy Garden Rooms, every building is made to order, so there isn't a single standard price that applies to every project.
However, we know it's helpful to have a realistic idea of cost before requesting a quote, so we've put together some example prices below to show what you can expect to pay for a fully installed Cosy Garden Room.
Excellent value for money
Ask about our Price Beating Guarantee
Price Guide
The prices below are based on our most popular garden room sizes, specifications and based on an NG23 postcode. They are designed to give you a realistic starting point rather than an exact price.
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1.8m French doors
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Two full-height windows (0.5m wide) with top lights (opening top windows)
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Hardie board maintenance-free exterior cladding (choice of 21 colours)
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Concrete foundation base
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300mm composite decking step
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Full building electrics package, including LED dimmable lighting, double sockets, canopy spots, two up/down lights, and a wall heater
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Delivery/Travel, installation location: Leicestershire
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Flooring and internal decorating
Example Prices as of 1 July 2026
3m Width | 4m Width | 5m Width | 6m Width | |
|---|---|---|---|---|
2m Depth | £14,500 | £18,500 | £21,400 | £23,600 |
3m Depth | £17,800 | £23,200 | £25,600 | £27,800 |
4m Depth | £19,900 | £25,900 | £29,900 | 31,500 |
Need a different size or shape? That's no problem. We can build your garden room to suit the space.
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Customisation and options
Want an extra window or external decking? No problem! We can tailor any build to suit your specific needs, so you get exactly what you want.
Included in the price
As standard, your Cosy Garden Room includes:
External security boarding
Full insulation for floor, walls, and ceiling
Concrete base
Internal decoration
Flooring
Electrics package with sockets and spotlights
Electric heating
UPVC windows and doors
Hardie Plank composite cladding
UK-wide design and build service
This is important when comparing garden room prices, as what is included can vary considerably between companies. A lower initial price may not include items such as the base, installation, electrics, flooring or internal finishes.
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Factors that affect Garden Room prices
Size is one of the biggest factors, but it isn't the only one. The final price will depend on the specification of your garden room and any additional features you choose. These can include:
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The overall size and shape of the garden room
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Location
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The number and style of doors and windows
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Your choice of external cladding
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Internal finishes and flooring
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Heating and air conditioning
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Additional electrical requirements
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Canopies and decking
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Internal partitions
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Bathrooms, WCs and kitchen areas
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Aluminium doors and windows
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Skylights and roof lanterns
We'll discuss the specification with you before providing a detailed quote, so you can see exactly what is included and what it costs.
Additional costs to consider
There are some circumstances where additional work may be required, depending on your garden and the specification of your room. This might include:
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Additional groundworks for difficult or sloping sites
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Longer electrical cables or electrical upgrades
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Drainage and plumbing for bathrooms or kitchen areas
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Restricted or particularly difficult access
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Removal of existing buildings or structures
Where additional work is required, we'll discuss it with you on as part of the quotation process.
Price Beating Guarantee
We're confident that our garden rooms offer excellent value for money. If you've received a genuine like-for-like quotation from another garden room company, send it to us and we'll compare it with our own.
Where the quote meets the terms of our Price Beating Guarantee, we'll beat the competitor's price. Available on eligible quotations at properties within a 50-mile radius of NG16 4BE.
Our Price Beating Guarantee is available to customers who have received a genuine written quotation from an established UK garden room company for the supply and installation of a comparable garden room. To qualify for our Price Beating Guarantee, the competitor's quotation must:
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be for the same customer, property and proposed installation site as the quotation provided by Cosy Garden Rooms
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be installed at properties located within a 50-mile radius of NG16 4BE
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be a genuine written quotation supplied directly by the competitor
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be dated within 14 days of being submitted to Cosy Garden Rooms
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provide sufficient information for us to understand the specification and what is included
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be for a fully installed garden room where our quotation is also for a fully installed include VAT and any compulsory fees or charges where applicable
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remain valid and available to the customer at the time the price beat is requested
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be based on the competitor's standard pricing and not include sale, promotional or other temporary discounted pricing
We may ask for additional information where the quotation does not contain enough detail for us to make a reasonable comparison. Where an eligible competitor's quotation meets the requirements of this Price Beating Guarantee, we will beat the competitor's quoted price.
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