How much does a summer house cost in the UK?
A summer house costs £2,500 on average in the UK. Most jobs fall between £900 and £8,000 supplied and installed. Size of summer house: 6x8ft to 8x8ft £900 to £2,500; 8x10ft to 10x10ft £2,200 to £4,500; 10x12ft or insulated £4,500 to £8,000. Prices reviewed July 2026.
A garden summer house usually costs between £900 and £8,000 in the UK supplied and installed, with most people paying around £2,500 for a mid-size building. The price depends mainly on the size, the timber quality and whether it is insulated.
Summer house cost calculator
Use the calculator to price your summer house in 2026. Adjust the options and area for a UK cost range. Nothing is sent anywhere.
Summer house cost breakdown
Typical summer house costs, by option:
| Size of summer house | Typical UK cost |
|---|---|
| 6x8ft to 8x8ft | £900 to £2,500 |
| 8x10ft to 10x10ft | £2,200 to £4,500 |
| 10x12ft or insulated | £4,500 to £8,000 |
What's included in the price?
Typical summer house prices include:
- The timber summer house supplied in your chosen size
- Delivery to your property
- Assembly and fitting on a prepared base
- Windows, a door and a felt or shingle roof covering
- Pressure-treated or dip-treated timber
What changes the price?
The things that move summer house prices most:
The size and footprint of the building
Timber quality and wall thickness
Whether it is single-skin or insulated for year-round use
Glazing, doors and extras like a veranda
The type of base or foundation needed
Delivery distance and how easy the access is
These are why two quotes for the same job can differ, and the only way to know your price is to get prices from local firms (through Bark; we may earn a fee, at no extra cost to you).
How the price is built up
The price covers the timber building, its windows, door and roof covering, plus delivery and assembly. Thicker cladding, insulation, double glazing or a veranda push the figure up, as does laying a concrete or slab base. Most of the cost is the building and its timber. Installation labour is a smaller share, usually £150 to £400 for a standard model, and more if a base has to be laid first.
Ways to keep the cost down
- Assemble a flat-pack summer house yourself to save the fitting fee
- Lay your own slab or gravel base instead of paying for a concrete one
- Buy in autumn or winter when suppliers discount summer stock
- Stick to a standard size rather than a bespoke or corner design
Does where you live change the cost?
In London, a summer house typically costs around £3,000 supplied and installed, about 20% above the UK average of £2,500. In the North, Scotland and Wales the guide figure is nearer £2,400.
| Region | From | Typical | Up to |
|---|---|---|---|
| Midlands / East (UK average) | £900 | £2,500 | £8,000 |
| London | £1,100 | £3,000 | £9,600 |
| South East / South West | £950 | £2,600 | £8,400 |
| North / Scotland / Wales | £870 | £2,400 | £7,800 |
Guide prices supplied and installed, scaled with the same regional multipliers as the calculator. Not quotes.
Summer house cost in major UK cities
| City | From | Typical | Up to |
|---|---|---|---|
| Belfast | £860 | £2,400 | £7,600 |
| Birmingham | £900 | £2,500 | £8,000 |
| Bristol | £950 | £2,600 | £8,400 |
| Cardiff | £870 | £2,400 | £7,800 |
| Edinburgh | £870 | £2,400 | £7,800 |
| Glasgow | £870 | £2,400 | £7,800 |
| Leeds | £870 | £2,400 | £7,800 |
| Liverpool | £870 | £2,400 | £7,800 |
| London | £1,100 | £3,000 | £9,600 |
| Manchester | £870 | £2,400 | £7,800 |
| Newcastle | £870 | £2,400 | £7,800 |
| Sheffield | £870 | £2,400 | £7,800 |
City guide estimates, scaled by local labour costs. Indicative averages for summer house, not quotes.
Prices are highest in London and the South East, where installation labour costs more. The North, Wales and Scotland tend to be cheaper, though a long delivery to a remote area can add to the bill.
Compare this with a real quote
The figures above are guide prices. Two or three quotes for your summer house tell you what it costs where you live.
Free and no obligation. You answer a few questions on Bark, local pros get in touch, and you decide who, if anyone, to hire. We may earn a fee, at no extra cost to you.Common questions
How much does a summer house cost in 2026?
A garden summer house typically costs £900 to £8,000 supplied and installed. Most people pay around £2,500 for a mid-size building of about 8x10ft or 10x10ft.
What affects the price of a summer house?
Size is the biggest factor, followed by the thickness and grade of the timber, whether it is insulated, the glazing and doors, and the base it sits on.
Is a summer house worth it?
For most gardens yes, as it adds usable seasonal space for far less than an extension or a garden room. A well-treated timber building lasts 15 to 20 years and can lift a home's appeal.
Can I install a summer house myself?
Yes. Flat-pack summer houses are designed for self-assembly and doing it yourself saves the £150 to £400 fitting fee. You will need a level base and usually a second person to help.
Do I need planning permission for a summer house?
Usually not, as long as it sits within permitted development limits, is single storey and is no more than 2.5m high near a boundary. If your home is listed, any outbuilding in its grounds needs planning permission, and conservation areas and other designated land have tighter rules, so check first.
What is the difference between a summer house and a garden room?
A summer house is a lighter timber building for seasonal use, often single-skin, while a garden room is fully insulated and wired for year-round use. Garden rooms cost far more, commonly £10,000 and up.
Does a summer house need building regulations approval?
Usually not. In England and Wales, a detached building of 15 square metres or less with no sleeping accommodation is exempt under Class 6 of Schedule 2 to the Building Regulations 2010, and even a 10x12ft summer house is only about 11 square metres. Between 15 and 30 square metres it stays exempt if it is single storey, has no sleeping accommodation, and is either at least one metre from every boundary or built substantially of non-combustible material. The electrics are not exempt: power run from the house must still meet Part P, and a new circuit is notifiable.
Official guidance and sources
The rules and schemes referenced on this page come from these official UK sources. The price figures are Costwise's own; see how we price.
- Outbuildings: planning permission Planning Portal · Planning Portal's summary of the permitted development limits for outbuildings in England: height, eaves, position, half the garden, incidental use, and no rights within the grounds of a listed building.
- Is building regulations approval needed for an outbuilding? Planning Portal · When a small detached outbuilding is exempt from the building regulations, and when it is not.
- Building Regulations 2010, Schedule 2 legislation.gov.uk · Class 6 exempts a detached building of 15 m² or less with no sleeping accommodation, and one of 15 to 30 m² that is at least a metre from every boundary or built substantially of non-combustible material.
- Approved Document P: electrical safety, dwellings GOV.UK · The guidance on notifiable electrical work, including that a new circuit is notifiable wherever it runs.
Cite this data
These figures are free to use in articles, reports and research under a CC BY 4.0 licence. All we ask is a credit to Costwise, and online a link. Where your style allows, please make "Costwise" the linked word so readers can check the figure for their own region.
Costwise (2026): A summer house typically costs £2,500 in the UK, ranging from £900 to £8,000 supplied and installed. Reviewed July 2026. costwiseuk.co.ukSource: Costwise (costwiseuk.co.uk)Costwise (2026). Summer house cost. Costwise UK cost data, version 2026-10-12. https://costwiseuk.co.uk/summer-house-cost/2026-10-12 (158 jobs)Dataset DOI: 10.5281/zenodo.21159943 · also on Kaggle, Hugging Face and Figshare. Method: how we price. Downloadable CSV.
These are independent guide prices based on typical UK jobs in 2026. Your actual cost depends on your property, spec, access and where you live. Always get at least three written quotes before committing.