How much do garden rooms cost?
This is the question we are most frequently asked. After all, we all want an idea of how much something might cost before handing over our personal details for a quote.
Over the last year, we have featured garden room projects that have cost £8,000 and those that cost more than £150,000! So the quick answer is that garden room prices vary throughout the market dependent on the size of the building and its specification.
A popular sized small garden room of 3m x 3m has an average price of £21,632 while a larger 5m x 3m example averages £28,209 including VAT and installation. See more examples here.
To help you get a quick idea of garden room prices, we have used our industry experience to survey the market and identify the current price range for popular garden room sizes. Take a look at the results here.
Garden room starting prices
Look at a garden room manufacturer's website or send them an initial email asking for a price, and they will give you a starting price for their buildings based on its footprint size.
To help you set a budget for your project, we have surveyed the starting prices of more than 50 garden room ranges. We have explored the starting prices of popular garden room sizes.
While manufacturers utilise different core structures, we have tried to compare like-with-like packages, so each price we sought includes the installation of the foundation, the weathertight insulated building, finished with the standard exterior cladding and the standard interior package. It also includes the wiring and sockets for lighting and power. The prices also include VAT.
These starting prices don't typically include the final electrical connection or any of the options you might choose to customise your new room.
Here are our findings
| Building Size | Range of Starting Prices | Average Starting Price |
|---|---|---|
| 2.5m x 1.8m | £10,995 to £27,144 | £15,542* |
| 2.5m x 2.5m | £7,995 to £22,000 | £16,186* |
| 3m x 2.5m | £8,995 to £35,000 | £18,731* |
| 3m x 3m | £8,995 to £39,000 | £21,632* |
| 4m x 3m | £17,500 to £39,000 | £24,224* |
| 5m x 3m | £20,995 to £46,000 | £28,209* |
| 6m x 3m | £23,500 to £45,000 | £31,735* |
| 5m x 4m | £22,995 to £48,500 | £32,461* |
| 6m x 4m | £27,200 to £65,000 | £39,309* |
* This is the mean average from research of 52 garden room companies.
Garden rooms 30 square meters and over need to be built to comply with Building Regulations. Companies that offer a bespoke design service can usually tailor their specifications to comply. Building Regulation compliant garden rooms are more expensive.
What's included in the price of a garden room?
In researching the market to form this price guide, it highlighted that garden room companies are pricing their buildings in different ways. Some companies offer all the essentials in their starting price. Others list their prices minus key elements such as the foundation and electric package.
There is also a growing trend for companies to list a price for the installation of the weathertight exterior shell and offer other elements as optional packages. For instance, they might offer a foundation pack, an insulation pack, an electrical pack, an interior lining pack etc.
While the prices we gathered for our price survey include the foundation and electrics (not the final electrical hook-up), we thought it would be helpful to put together a list of project elements and whether you should expect them to be included in the starting price. Hopefully, this will help you when comparing your options.
| Project Element | Included in starting price | Notes |
|---|---|---|
| VAT | Usually | Most companies quoted prices include VAT. Those that don't include VAT can seem more affordable at first glance. |
| Delivery | Partly | Typically, delivery in a radius of the company's workshop is included in the building's base price. Over this radius, delivery is charged by the mile or postcode area. |
| Installation | Usually | The majority of the garden room market includes installation of the building in their quoted starting price. For some pre-designed garden room ranges, the installation part of the project is quoted as an optional extra. |
| Foundations | Usually | With the advancement of groundscrew and plinth foundations, the majority of garden room manufacturers include the foundation in the quoted starting price. There are still lots of ranges where they either price the foundation separately or ask you to organise it with another company before they arrive on-site. |
| Insulation | Almost Always | Insulation in the floor, walls and roof structures is a key element of a garden room and what makes it stand out from other types of garden buildings. 90% of the garden rooms on the market are sold fully insulated, but a few companies are now pricing their buildings with the insulation pack as an optional extra. |
| Doors & Windows | Usually | The starting price of a garden room usually includes a standard door and window configuration. These are normally house-quality uPVC units. Any changes you make to the standard door & window configuration would then affect the price. |
| External Cladding | Usually | External cladding is usually included in the quoted starting price of a garden room. This is typically the company's standard finish, so in some cases, it will be an entry-level finish like Redwood, and with other companies, the standard finish will be Cedar. |
| Roof Covering | Usually | A garden room's quoted starting price usually includes the roof covering. Finishes such as insulated steel panels and EPDM membranes are commonplace. In our research, we have found several companies offer asphalt finishes, as standard, with options to upgrade to long-lasting EPDM. |
| Lighting & Power Sockets | Almost Always | The majority of garden rooms are priced to include the wiring of lighting and power points. However, a growing number of companies are not including them as standard and offering an electrical pack upgrade option. See the item below on the final electrical hook-up. |
| Electrical Hook-up | Sometimes | The majority of garden room companies offer the final electrical connection either as an optional add-on service or ask you to organise it with a local electrician. Companies that provide a turnkey service tend to include the final electrical connection in the prices they quote. |
| Data Cabling | Not Often | Some companies offer data cabling for your internet connection in their starting price; they tend to be the ones that provide turnkey services. Most commonly, data cabling is an optional extra. |
| Heating | Sometimes | Some companies offer an electric panel heater in their starting price with options to upgrade. Other companies don't provide any form of heating, as standard. You will want a heater for the coldest days of the year. |
| Interior Lining | Almost Always | Most garden rooms come with an interior lining, whether unpainted MDF boards, white Melamine boards or a high-spec plastered and decorated finish. There is a growing trend to offer the interior lining as an optional extra, which can be handy if you want to do some DIY. |
| Flooring | Almost Always | The majority of garden room starting prices include laminate flooring and skirting boards. Although, some companies leave you with a boarded finish and offer the option of flooring upgrades. |
