Garden Rooms Surrey – Frequently Asked Questions
If you’re considering a garden room for your home, you probably have questions about planning permission, costs, insulation, foundations, construction and how the finished room can be used.
At Ewell Garden Rooms, we design and build high-quality bespoke garden rooms in Surrey and the surrounding areas. From home offices and garden gyms to studios and dedicated entertaining spaces, we create comfortable, practical rooms designed around your home and lifestyle.
Below you’ll find answers to some of the questions we’re most frequently asked.
Garden Room Planning & Regulations
Do I need planning permission for a garden room?
In many cases, a garden room can be built under permitted development rights without the need for a full planning application. However, there are specific rules concerning factors such as the building’s size, height, position and intended use.
There can also be additional considerations for listed properties and homes in conservation areas or other designated locations.
Every property is different, so we recommend checking the planning requirements for your individual project before construction begins.
If you’re unsure whether your proposed garden room requires planning permission, we’re happy to discuss your plans and explain the considerations.
What are the planning permission rules for garden rooms?
The planning rules for garden rooms can be quite detailed. Permitted development rights generally apply to buildings that are used for purposes incidental to the enjoyment of the main house, but conditions and limitations apply.
These can include restrictions relating to the height of the building, its position within the garden and the amount of land that can be covered by buildings.
If you’re planning a larger garden room or intend to use it for accommodation, a different set of considerations may apply.
We recommend obtaining appropriate planning advice for your individual property before starting work.
Can I build a garden room close to my boundary?
Potentially, yes, but the permitted height of a garden room can be affected by how close it is to a boundary.
The shape of your garden, neighbouring properties and the proposed roof design will all need to be considered.
We’ll take the available space and your requirements into account when developing the design of your garden room.
Does a garden room need Building Regulations approval?
Planning permission and Building Regulations are separate matters.
Depending on the size, construction and intended use of your garden room, Building Regulations may or may not apply.
A garden office or studio can have different requirements from a building intended to provide independent residential accommodation.
We’ll discuss how you intend to use your garden room at the beginning of the design process so that the relevant requirements can be considered.
Garden Room Costs
How much does a garden room cost in Surrey?
Garden room prices vary considerably depending on the size, design, construction and specification.
At Ewell Garden Rooms, our projects typically range from around £18,000 to £60,000.
A compact garden office with a straightforward specification will naturally cost less than a large bespoke garden room with upgraded glazing, extensive electrical work, heating, plumbing or other specialist features.
Rather than offering a generic package price, we provide a quotation based on your individual requirements.
What affects the cost of a garden room?
Several factors can influence the final price, including:
- The size of the garden room
- The complexity of the design
- The foundations required
- Windows and doors
- Insulation specification
- External cladding
- Internal finishes
- Electrical installation
- Heating
- Plumbing and drainage
- Site access
- Ground conditions
- Additional bespoke features
We’ll discuss these requirements with you before preparing your quotation, so you can make informed decisions about where to invest your budget.
Are garden rooms worth the investment?
For many homeowners, a well-designed garden room can provide valuable additional space without the disruption and expense associated with extending the main house.
The value isn’t simply about adding square footage. A garden room can create a dedicated home office, gym, studio, entertaining space or peaceful retreat that can be used every day.
The key is to design and construct the room properly so that it feels like a genuine extension of your living space rather than a garden shed.
Garden Room Design & Construction
Are your garden rooms bespoke?
Yes. Our garden rooms are designed around your requirements, garden and property.
We don’t believe that a standard-size building is right for everyone. The layout, position, doors, windows, finishes and internal features can all be considered as part of the design.
Whether you have a compact urban garden or a larger Surrey property, we’ll work with the space available to create a practical and attractive solution.
What are Ewell Garden Rooms made from?
We use a range of quality building materials as part of our garden room construction, including:
C24 timber framing – providing the structural framework of the building.
Rockwool and/or PIR insulation – helping create a comfortable, well-insulated internal environment.
Double-glazed windows and doors – providing natural light, thermal performance and a high-quality finish.
Thermowood external cladding – giving the garden room a contemporary natural appearance.
Plasterboard internal walls – providing a clean surface ready for your chosen interior finish.
EPDM rubber or Fibreglass roofing – providing a durable and waterproof roof covering.
Ground-screw foundations – providing a stable foundation system while potentially reducing the excavation and concrete required on site.
What is C24 timber and why is it used?
C24 is a recognised structural timber strength class.
It is graded for structural performance and is commonly used in construction where reliable strength and dimensional performance are required.
At Ewell Garden Rooms, C24 timber forms part of the structural framework of our buildings.
What is Thermowood cladding?
Thermowood is timber that has been heat-treated under controlled conditions.
The treatment alters the properties of the timber and makes it particularly suitable for external applications. It also creates a distinctive, contemporary appearance that works extremely well on modern garden rooms.
Thermowood can be allowed to weather naturally or maintained if you prefer to retain its original colour.
What insulation do you use in a garden room?
We use Rockwool and/or PIR insulation depending on the design and requirements of the individual project.
Insulation is an important part of creating a garden room that can be comfortably used throughout the year.
The walls and roof are designed as part of the overall building envelope, with the insulation specification selected to suit the project.
Do garden rooms have double glazing?
Yes. Our garden rooms use double-glazed windows and doors.
The glazing you choose can have a significant impact on the appearance of the building, the amount of natural light entering the room and how the space connects with the garden.
We’ll discuss the most suitable configuration during the design process.
What type of roof does a garden room have?
Our garden rooms generally feature contemporary flat or low-profile roofs finished with an EPDM rubber roofing membrane.
EPDM is a durable synthetic rubber roofing material that provides a waterproof protective layer and is well suited to modern garden room designs.
Garden Room Foundations
Do garden rooms need concrete foundations?
No. A traditional concrete slab isn’t necessarily required.
Where appropriate, we can use ground-screw foundations to support the garden room.
Ground screws can provide a strong and stable foundation while reducing the excavation and concrete associated with some traditional foundation methods.
The appropriate foundation solution will depend on the ground conditions, building size and site.
What are ground screws for garden rooms?
Ground screws are steel foundation posts that are installed into the ground and provide support for the structure above.
They can be particularly useful for garden rooms because installation can be relatively quick and can minimise disruption to the surrounding garden.
Before construction, we’ll assess the site and determine the most suitable foundation approach for your project.
Can a garden room be built on uneven ground?
In many cases, yes.
One of the advantages of a suitable foundation system is that it can allow a garden room to be installed where the garden isn’t completely level.
The extent to which this is possible will depend on the slope, ground conditions, access and proposed building.
We’ll assess your garden before finalising the design and foundation solution.
Using Your Garden Room
Can I use a garden room all year round?
Yes. Our garden rooms are designed to provide a comfortable space that can be used throughout the year.
The combination of insulation, double glazing, a properly constructed timber frame and a suitable roof system helps create a comfortable internal environment.
Heating and electrical systems can also be incorporated according to how you intend to use the room.
Can I use a garden room as a home office?
Absolutely.
A garden office provides a dedicated workspace away from the distractions of the main house.
We can design your home office around your working requirements, including:
- Desk positioning
- Electrical sockets
- Lighting
- Heating
- Internet connectivity
- Storage
- Glazing and natural light
A bespoke garden office can be a particularly effective way to create a professional working environment without sacrificing a room inside your home.
Can I use a garden room as a gym?
Yes.
A garden gym can provide a convenient dedicated workout space just a few steps from your back door.
The design can incorporate suitable flooring, ventilation, electrical sockets, lighting, mirrors, storage and other features depending on the equipment you intend to use.
Can I have a garden music studio?
Yes. Garden rooms can make excellent music and creative studios.
If you’re planning a music studio, recording space or rehearsal room, it’s important to consider sound insulation and acoustic treatment during the design stage.
Tell us how you intend to use the space and we can discuss the construction and specification requirements.
Can I have a garden room with a toilet or kitchenette?
Potentially, yes.
Plumbing can be incorporated into some garden room designs, but this needs to be considered early because water supply, drainage and the position of the building all affect the design.
If you want a WC, kitchenette or other plumbing facilities, tell us about your plans during the initial consultation.
Garden Room Installation
How long does it take to build a garden room?
The construction time depends on the size, specification and complexity of your project.
A straightforward garden office will generally have a shorter installation period than a large bespoke garden room with additional electrical, plumbing or specialist requirements.
Access, ground conditions and weather can also affect the programme.
Once we’ve discussed your project, we’ll give you an estimated construction timescale.
How do you build a garden room if access to my garden is difficult?
Restricted access doesn’t necessarily prevent you from having a garden room.
We’ll assess the route from your property entrance to the proposed location, considering gates, narrow paths, steps, walls and other obstacles.
Where access is challenging, we’ll discuss the available options before construction starts.
Will my garden be damaged during installation?
We understand that your garden is an important part of your home.
We’ll plan the installation carefully to minimise disruption and protect existing areas wherever reasonably possible.
Ground-screw foundations can also reduce the amount of excavation required compared with some traditional foundation methods.
The exact level of disruption will depend on the site and access.
Garden Room Maintenance
Do garden rooms need much maintenance?
A properly constructed garden room shouldn’t require extensive maintenance, but regular checks and basic upkeep are still important.
We recommend periodically checking the roof, gutters, windows, doors, cladding and other external elements.
Timber cladding will naturally weather over time. If you want to maintain its original appearance, you may need to apply an appropriate treatment periodically.
How long does a garden room last?
The lifespan of a garden room depends on the quality of the construction, materials, installation, environment and ongoing maintenance.
We use established construction methods and quality materials designed to create a durable building that can be enjoyed for many years.
Our aim is to create a permanent addition to your garden that looks and feels like a properly constructed room rather than a temporary garden building.
Designing Your Garden Room
Can I choose the size of my garden room?
Yes.
The size will depend on your garden, planning considerations, intended use and budget.
We can design everything from a compact home office to a much larger multi-purpose garden room.
If you’re unsure what size you need, we’ll help you consider how the space will be used and how much room you need for furniture and equipment.
Can I choose the layout?
Yes.
The internal layout can be designed around the way you intend to use the room.
We can consider the position of desks, sofas, gym equipment, storage, screens, musical equipment and other features during the design process.
Can I choose the colour and finish?
Yes.
The external appearance of your garden room is an important part of the design.
Thermowood provides a distinctive natural finish, while the doors, windows and other external elements can be selected to complement the style of your home and garden.
Internal finishes can also be tailored to create the look and atmosphere you want.
Can I add heating and air conditioning?
Heating can be incorporated into your garden room so that it can be comfortably used throughout the year.
The most suitable heating solution will depend on the size and intended use of the room.
If you require cooling or air conditioning, this can also be discussed during the design stage.
Choosing Ewell Garden Rooms
Why choose Ewell Garden Rooms?
We combine bespoke design, quality materials and professional construction to create garden rooms that are designed for real life.
Our garden rooms are built around the individual property and the way our customers want to use their space.
From the initial conversation through to completion, we aim to make the process straightforward, transparent and enjoyable.
Do you build garden rooms in Surrey?
Yes. Ewell Garden Rooms provides garden room design and construction services in Ewell, Surrey and surrounding areas.
We work with homeowners looking to make better use of their garden by creating high-quality additional space.
If you’re unsure whether your garden is suitable, get in touch and we’ll be happy to discuss your ideas.
What happens when I contact Ewell Garden Rooms?
We’ll start by talking through your ideas.
We’ll want to understand:
- What you want to use the garden room for
- The approximate size you’re considering
- Where you would like it positioned
- Any particular design ideas you have
- Your preferred specification
- Your approximate budget
From there, we can discuss the next steps, including a site assessment, design and quotation.
Can I get a quote for a garden room?
Yes.
Every Ewell Garden Rooms project is different, so we provide quotations based on the individual design and specification.
The best way to get an accurate idea of cost is to tell us what you want to create and arrange an initial discussion.
Ready to create your perfect garden room?
Whether you’re looking for a garden office, home gym, studio, entertainment room or simply a beautiful additional space, Ewell Garden Rooms can help turn your ideas into reality.
Contact us today to discuss your garden room project in Surrey.
07877940674
info@ewellgardenrooms.co.uk