A countryside scene featuring a white house with a slate roof, surrounded by green trees, a fenced grassy yard, a phase garden room, and rolling green fields extending into the distance under a partly cloudy sky.

WORK | CREATE | RETREAT

design led cabins and saunas built from sustainable materials

Garden Studios Cornwall

Painters, musicians, potters and makers all need different things from a garden studio. An artist may need consistent natural light, while others may need more space for equipment, storage or practical day-to-day use.

At Phase, we design and build customisable garden studios in Cornwall, with layouts, glazing, finishes and other features tailored around how you plan to use the space. The result is a comfortable, purpose-built studio that supports the way you work.

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Ceiling with wooden panels and integrated LED lighting in a modern interior space
A white house with a shingled roof, surrounded by green trees, with cars parked nearby under a partly cloudy blue sky.
A modern small building or shed with metal siding and glass doors, surrounded by trees and greenery, with reflections of the sky and trees in the glass. There is a glass greenhouse attached to the side of the building.
A wooden small building with a glass door sits outdoors next to a gravel pathway. The background includes a lush green field, trees, and a bright blue sky with some white clouds.
Interior view of a room with wooden walls and ceiling, featuring a sliding glass door opening to a grassy outdoor area with a wooden fence. The room has medical or therapy equipment, including a small white cabinet, a mirror, medical posters on the w
Living room with large sliding glass door, a potted plant, a sofa with cushions, a wooden sideboard, and a window with blinds letting in sunlight.
A small wooden house with a glass sliding door is placed in a lush green yard with potted flowers. There is a gravel pathway leading to the house, and a wooden fence encloses the yard. The background features a landscape with trees, fields, and a bri
A modern black metal shed with a peaked roof and a closed roll-up door, surrounded by trees and a gravel path.
A cozy room with wooden walls, ceiling, and floor. It has two large windows showcasing a green outdoor landscape with a fence, trees, and a house. The room contains a storage shelf filled with bins, workout equipment like kettlebells and foam rollers
A residential backyard scene with a white house on the left, a black car parked on a grassy lawn, and a modern wooden garden shed with large windows. There are colorful flower pots along the side of the shed, green trees, and a blue sky with scattere
A music producer's home studio with drums, guitars, a keyboard, and a person working at a computer surrounded by audio equipment and soundproofing.
Modern interior room with wooden walls, exercise mats, a mirror, a bed with rolled towels, storage shelves with baskets, and electronic equipment.
Interior of a modern residential kitchen and living space with white walls, wooden flooring, a wooden door, and a white ceiling with skylight and recessed lighting. There is a tall ladder, potted plants, a small kitchen counter with microwave, kettle
A construction site featuring a white crane truck lifting a garden room. The truck is beside green bushes and a partially built wooden house with large windows, surrounded by greenery and a blue sky with some clouds.
Close-up view of a wooden ladder against a blue sky with some clouds.

Customisable Garden Studio Design, Built Around Your Work

Phase garden studios are available in a range of set sizes and designs, with the main structure, windows and doors already defined for each model. From there, you can personalise your studio through the internal and external finishes, creating a space that suits how you plan to use it.

A Studio Set Up Around How You Work

Each model provides a carefully designed starting point, which can then be fitted out to suit your needs. Bespoke storage can be incorporated for equipment, materials and other items you need close at hand, helping you make practical use of the available space.

This gives you the benefits of an established Phase design while still creating a studio that works for your day-to-day needs.

Materials and Finishes to Suit Your Style

You can personalise both the inside and outside of your garden studio through a choice of cladding, flooring, paint colours and other finishes. This allows the building to complement your property and garden while creating the look and feel you want inside.

A Studio That Can Adapt with You

A dedicated studio does not necessarily need to serve one purpose forever. The finishes and fit-out can be chosen with flexibility in mind, allowing the space to work as a creative area, home office or general-purpose garden room as your needs change.

Our Garden Studio Range

We offer four core cabin options, each suited to different working styles and outdoor spaces. Every model can be customised to match your specific requirements.

Tǒmder (warmth)

A contemporary home sauna designed to create a private wellness retreat within your garden.

View Tǒmder >

Lowarth (garden)

A compact garden room ideal for one person home working, yoga, reading, studying and quiet creative work.

View Lowarth >

Sodhva (office)

A larger multi-purpose building suited to spacious home working and living, fitness, entertainment and adaptable family use.

View Sodhva >

Studhla (studio)

Our largest studio-style cabin designed for entertaining, shared workspaces and premium lifestyle use.

View Studhla >

Every cabin can be tailored to your working style, whether you need a single peaceful office for deep focus or a larger studio for team meetings.

Watch our video to explore how we deliver our cabins and saunas to your door!

The Garden Building Design and Build Process

We keep the process clear from your first conversation through to handover. It begins with a consultation, either at your property or over a call, where you can tell us how you plan to use your garden studio, your preferred style, your garden and your budget.

From there, we’ll help you choose the right garden studio and work through your cladding, flooring, paint colours, internal finishes and other options, with any planning considerations flagged early.

Your cabin is manufactured in our Cornwall workshop, then craned into position and installed on site as part of a turnkey build. Many of our installations use ground screw foundations, which minimise disruption to your garden while providing a strong, reliable base.

Lead times typically run from three to five weeks depending on the chosen size and specification, with final service connections and finishing touches completed on site.

Insulation and Year-Round Comfort

A garden studio only earns its keep if it works in January as well as July. Our cabins are fully insulated and built with durable, weather-resistant materials that withstand Cornwall's coastal climate.

Double glazing throughout ensures each unit stays thermally efficient, secure, and quiet, making it comfortable to work in no matter the weather.

We can also include heating, lighting, and electrical systems tailored to how you plan to use the studio. This ensures your garden room is a comfortable, practical space for year-round use—not just during the warmer months.

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A small wooden house with a sliding glass door, surrounded by colorful flower pots, in a lush green garden with trees and a wooden fence.

Why Choose Phase for Your Garden Studio

Choosing a garden studio is about more than the building itself. It is about finding a team that understands what you need and can create the right space from design through to installation.

Trusted Team

Based in Cornwall, our design and build team works with you throughout the entire process. From the initial design conversation to the final installation, you’ll have consistent support. We also provide planning guidance and manage the entire build as a seamless service.

Cornish Workshop

Every Phase cabin is made in our own workshop, so we can keep a close eye on the build from start to finish. We build each unit to an exceptional standard, with longevity in mind.

Personalised Finish

Our garden studios are available in a range of set designs and sizes, which you can personalise through your choice of cladding, flooring, paint colours, internal finishes and bespoke storage. This gives you a proven design with plenty of scope to make the finished studio your own.

10 Year Warranty

Every Phase garden building comes with a 10-year structural warranty, giving you added reassurance that your studio has been designed and built with longevity in mind.

Designed Around You, Made in Cornwall

A garden studio should feel like a permanent, high-quality addition to your property, especially when it will be used regularly for work, hobbies, or creative projects. At Phase, our focus is on quality workmanship, durable materials, and careful attention to detail throughout every build. Each studio is made to an exceptional standard and backed by a 10-year structural guarantee, giving you confidence in a space designed for years of regular use.

Planning Permission for Garden Studios and Garden Buildings Cornwall

Many garden studios fall under Permitted Development Rights, meaning planning permission often isn't required. This depends on the size, height, and position of the building on your plot, along with any specific restrictions on your property, such as listed status or a conservation area.

Building regulations may also apply depending on the size and intended use of the studio, particularly where plumbing is involved.

Note: Because the criteria vary by property, we always recommend checking with your local planning authority before work starts. We can also offer guidance on this as part of your design consultation.

Key permitted development conditions:

  • Single-storey construction with eaves height under 2.5m

  • Maximum height of 3m (or 4m for a dual-pitched roof)

  • Located behind the principal elevation of the main house

  • Not covering more than 50% of the garden area

  • Purely incidental use (not primary sleeping accommodation)

Read our full guide to planning permission for more detailed information.

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A small modern wooden house with glass sliding doors, surrounded by a lush garden with potted plants, green grass, and trees, under a blue sky with clouds.

Your Questions, Answered

  • Garden studio prices vary depending on the size, design and level of specification. At Phase, our compact units start from £7,000 + VAT, while larger studios are £18,000 + VAT. Following an initial consultation, we'll discuss your requirements and provide a clear, fixed-price quotation with no hidden costs.

  • Lead times typically run from three to five weeks, with most installations completed in four to five days. Phase can take care of the full process, from delivery and installation to foundations and ground screws, along with any bespoke plumbing and electrical requirements. Garden rooms can also include features such as kitchens and bathrooms, depending on how you plan to use the space.

  • Yes. Our cabins are fully insulated with double glazing throughout and designed for genuine year-round use. You can also personalise your building with different internal finishes, flooring, and cedar cladding options to create a comfortable space that suits your needs.

  • A well-built garden studio adds valuable extra space to your home, creating a dedicated area for work, creativity or hobbies without the need for an extension. A high-quality studio can also increase the appeal of your property to future buyers, making it a practical investment for both now and the future.

  • Garden rooms and garden studios can use the same insulated construction, glazing and materials. The main difference is their purpose. A garden room is generally a flexible, multipurpose space, while a garden studio is set up for a specific creative or practical use, such as art, music, hobbies or work.

  • Every Phase cabin comes with a 10-year structural warranty as standard. Integrated systems, glazing and finishes are covered by separate manufacturer warranties, with terms depending on the individual product.

CONTACT US

Email: office@phasedandb.com

Tel: 01579 560124

Unit 18 Trelawney Business Park, Callington, Cornwall, PL17 7SD

Four people are standing and talking inside a room with light-colored walls and ceiling. One woman is pointing with her finger while two men are smiling and holding cups.