One Bedroom Garden Annexes
Updated: 1 December 2025
One-bedroom garden annexes are the most common configuration we see, offering a practical and comfortable living space that doesn’t overly dominate the garden. Experienced garden annexe designers work closely with clients to tailor the size and layout of the building to suit both the available space and the specific needs of the family. Whether you’re looking for a compact one-bedroom garden home or have room for something more spacious, the projects below offer plenty of inspiration.
See Which Companies Can Make Your Annexe Vision a Reality
The projects we are sharing have been completed by different companies, showcasing their ability to create one-bedroom annexes that meet each client’s requirements. From optimising room layouts to ensuring the annexe complements the main house and garden, these examples demonstrate how designers can create a functional home that is comfortable to live in and feels welcoming.
Some of these projects have been built as permanent homes, receiving Full Householder Planning Permission and Building Control sign-off. Others have been designed as mobile homes under the Caravan Act and come with a Lawful Development Certificate, confirming their legal status.
If you’re considering alternative layouts, you might also want to explore these open-plan studio annexes, or our collection of articles about two, three, and four-bedroom annexes. These examples can provide further ideas for your own garden living project.
We have sorted the one-bedroom garden annexe articles by footprint size, from smallest to largest, to help you easily explore the options.
This 21 sqm student den by Timeless Garden Rooms showcases how their versatile buildings can be customised to suit younger relatives, offering a private space for studying and socialising. Part of their Studio Range, this mono-pitched building features feather-edge Larch cladding and sliding doors, with additional windows for extra light. Inside, partition walls divide the space into two living areas and a shower room. Timeless Garden Rooms handled the entire project, from groundworks to final decoration, creating a modern and comfortable space for the client's university student son.
This 27.3 sqm granny annexe, designed by Annexe Spaces, offers a comfortable one-bedroom home at the bottom of the garden. Measuring 4.37m x 7.5m with a 2.8m height, the annexe includes an open-plan living room with an L-shaped kitchen, a utility cupboard, and an en-suite double bedroom. Large floor-to-ceiling windows and a skylight flood the space with natural light, while a level composite decking path connects the annexe to the main house, ensuring accessibility. Clad in low-maintenance Cedral Click in Grey Green, the annexe features a contemporary, durable exterior. Annexe Spaces provided a fully project-managed service, handling planning, building control, and all groundworks.
This 27.88 sqm self-contained garden annexe, designed by Swift Unlimited, maximises space while delivering a functional and high-spec living area. Measuring 6.8m x 4.1m, the annexe includes a compact double bedroom, a kitchenette, and a narrow shower room with a pocket door to save space. A Velux roof window brings light into the bedroom, making it feel open and airy. The annexe also features a storage room cleverly concealed within the Cedar cladding and is topped with a striking sedum living roof. Swift Unlimited managed the entire project, from design and planning approval to construction and utility connections.
This 30 sqm one-bedroom annexe, designed by Ark Design Build, offers a clever solution for an awkward-shaped garden. Featuring an angled rear wall that matches the garden’s boundary lines, the layout includes a spacious main room with a kitchen and storage area, and a generous bedroom with an en-suite shower room. Large sliding doors and high-set windows flood the interior with light and provide garden access. Ark Design Build managed the entire project, from design and planning approval to groundworks and utility connections, ensuring a seamless, fully commissioned build.
This 31.2sqm pitched roof granny annexe by Annexe Spaces showcases how a compact space can feel open and inviting, thanks to its vaulted ceilings and light-filled design. Built for a gentleman seeking independent living while staying close to his family, the annexe features a spacious living area with a well-equipped kitchen, a double bedroom, and an en-suite shower room. The exterior, rendered in cream with dark grey doors and windows, evokes a contemporary cottage feel. Annexe Spaces provided a full turnkey service, managing everything from design and planning approval to final connections.
This 31.5 sqm one-bedroom garden annexe by Swift Unlimited provides a comfortable, self-contained home with defined living and sleeping areas. Designed for a family in Dorset, the annexe offers independent living for their adult son while keeping support close by. The contemporary exterior features durable Douglas Fir cladding and a striking glazed corner with two sets of sliding doors, maximising light and garden views. Inside, high-quality finishes include reinforced walls for mounted TVs, a compact kitchenette, and a well-appointed en-suite shower room. Space-saving pocket doors enhance functionality. Swift Unlimited handled the entire project, from design and planning to full build and decoration, delivering a ready-to-move-into home.
This 32.24 sqm one-bedroom garden annexe, designed by Executive Garden Rooms, offers a comfortable and independent living space for an older gentleman at the end of his family’s garden. Measuring 6.2m by 5.2m, the annexe features an open-plan living area with a compact yet well-equipped kitchenette, a spacious shower room, and a bedroom with large windows for natural light. The annexe is finished with low-maintenance Cedral cladding, and the interior boasts floor-to-ceiling glazing and durable wooden flooring. Executive Garden Rooms provided a full turnkey service, managing everything from planning to final connections and Building Control approval.
This 32.6sqm garden granny annexe by Executive Garden Rooms was designed as a self-contained home for a client’s mother, allowing her to live independently while staying close to family. The 7.25m x 4.5m building features a spacious living area with a well-equipped kitchenette, a double bedroom with an en-suite shower room, and French doors offering views of the garden. Pocket doors maximise space, while air conditioning and a pressurised water system ensure year-round comfort. Executive Garden Rooms managed the entire project, from design and planning permission to groundworks and final connections.
This 33 sqm garden annexe, designed by JML Garden Rooms, offers a self-contained living space for a family in Scotland, providing independent accommodation for their mother. The annexe includes a spacious living room with a vaulted ceiling, a galley-style kitchen, a bedroom, and a shower room. Built using highly insulated SIPs (structural insulated panels), the building was constructed off-site for quick assembly on-site, becoming wind and watertight within two weeks. JML Garden Rooms provided a full turnkey service, handling all groundworks, planning permission, and utility connections, ensuring a smooth project from start to finish.
This L-shaped granny annexe, designed by Booths Garden Studios, offers a spacious and light-filled home that can be installed under the Caravan Act. Measuring 34.2 sqm, the annexe consists of two sections: 7.31m x 3.65m and 3.65m x 2.43m, creating a flexible open-plan living space with a double bedroom. Extensive floor-to-ceiling glazing fills the home with natural light, while a sleek kitchen and modern shower room complete the interior. Booths Garden Studios managed the entire project and offers a 25-year maintenance-free guarantee on their buildings.
This 36 sqm one-bedroom granny annexe, designed by Executive Garden Rooms, offers a spacious, self-contained home with a well-equipped kitchen, perfect for a keen cook. Measuring 8m x 4.5m, the annexe includes a bedroom with an ensuite shower room and an open-plan living area with an L-shaped kitchen featuring an oven, induction hob, and integrated fridge. The light-filled living space benefits from large sliding doors and a Velux window with rain sensors. Externally, the annexe is clad in a mix of Western Red Cedar and dark grey Cedral for a stylish, low-maintenance finish. Executive Garden Rooms provided a full turnkey service, managing planning, construction, and utility connections.
This 36 sqm one-bedroom garden annexe, designed by Swift Unlimited, provides a customised living space for a client moving in with family. The L-shaped layout includes a well-specified kitchen, spacious living area with bi-folding doors, and a double bedroom with built-in storage. High-spec finishes, such as underfloor heating and pocket doors, enhance the annexe's functionality. Externally, the home is clad in Larch tongue & groove for low maintenance. Swift Unlimited managed the entire process, from design and planning approval to construction and utility connections, delivering a fully commissioned annexe.
This 8m x 5m (40 sqm) one-bedroom garden annexe by Swift Unlimited was designed to provide a modern, accessible home for an older relative. Featuring a spacious living area with bi-fold doors, a well-equipped kitchen, and a double bedroom with an en-suite shower room, the annexe is both stylish and functional. Built with SIPs panels for excellent insulation, it ensures year-round comfort and efficiency. Swift Unlimited handled the entire project, from design and planning permission to final connections, delivering a fully move-in-ready home. This annexe is a permanent structure, approved by Building Control, and completed in just four weeks.
This 40 sqm SIPs granny annexe, designed by Annexe Spaces, provides a self-contained, light-filled home for a family in Scotland. Measuring 8m by 5m, the one-bedroom annexe features an open-plan living area with large French doors and high-opening windows, creating a bright and airy space. The well-equipped kitchen and contemporary shower room add to the home's comfort and functionality. Built using Structural Insulated Panels (SIPs), the annexe benefits from excellent insulation, ensuring year-round comfort with low energy costs. Annexe Spaces managed all aspects of the project, including planning, building control, and utility connections, delivering a complete turnkey service.
This 40 sqm one-bedroom garden annexe, designed by Executive Garden Rooms, provides a modern, independent living space for the clients' son. Measuring 8m by 5m, the annexe features an open-plan living area with a well-equipped kitchen, a spacious double bedroom, and an en-suite shower room. Built 60 metres from the main house, the project required extensive groundworks, including a reinforced foundation and trenching for utilities. The light-filled annexe includes French doors, floor-to-ceiling windows, and a well-specified electrical package. Executive Garden Rooms managed the entire process, from design to planning and utility connections, delivering a turnkey solution.
This uniquely shaped 41 sqm mobile home, designed by A Room in the Garden, fits perfectly into an irregularly shaped garden, maximising living space without compromising the garden's layout. Built under the Caravan Act, the wedge-shaped structure features a concave front elevation with a combination of treated Redwood and white render. Inside, the annexe includes a well-proportioned kitchen and living area, a double bedroom, and a stylish shower room. A large skylight fills the living space with natural light, and oak-effect flooring with underfloor heating adds warmth and comfort. A Room in the Garden managed the entire project, tailoring every detail to the client's preferences.
This 9m x 5m (45 sqm) pitched roof living annexe by Swift Unlimited offers a bespoke, modern home designed for long-term comfort. Featuring an open-plan living space with an L-shaped kitchen, dining, and seating areas, the annexe is filled with natural light through French doors and a skylight. The vaulted ceiling enhances the spacious feel, while the double bedroom includes a garden-facing window and ensuite shower room. Swift Unlimited handled the entire project, from design to final connections, completing the build in just five weeks. Durable materials like Western Red Cedar and white render ensure a low-maintenance exterior.
This 45sqm one-bedroom garden annexe by A Room in the Garden showcases a beautifully designed exterior that complements the stone and timber finishes of the main house. Western Red Cedar cladding on one side adds durability and clean lines, while stone cladding on the other reflects the character of the primary residence. Inside, the annexe includes a welcoming entrance hall, an L-shaped kitchen, a spacious living area with bi-fold doors, and a double bedroom with fitted wardrobes and an en-suite bathroom. A Room in the Garden managed every detail, ensuring a seamless blend of style and functionality.
This 47sqm L-shaped one-bedroom garden annexe, designed and built by Executive Garden Rooms, offers a modern, self-contained living space ideal for an elderly parent. The annexe features a double bedroom, shower room, storage cupboard, and multifunctional living area, all thoughtfully arranged to maximise garden views. The light-filled living room includes French doors, while the kitchen is customised with high-gloss units and integrated appliances. Externally, the annexe combines Western Red Cedar cladding with dark grey Cedral for a low-maintenance, stylish finish. Executive Garden Rooms managed the entire project, from planning to final decoration, ensuring a move-in-ready home.
This 48.83 sqm one-bedroom garden annexe, designed by Swift Unlimited, offers a bespoke living solution in Margate. Built for a client downsizing from a large house, the annexe features a well-equipped L-shaped kitchen, a spacious living room with roof lights, and a separate bedroom with en-suite. Thoughtful design choices, such as internal pocket doors, maximise space and enhance movement throughout the home. Swift Unlimited managed the entire process, from planning approval to the final build, completing the project in just six weeks. The result is a light-filled, modern home that perfectly balances independence and proximity to family.
This 50 sqm, three-room garden annexe in Kent was designed and built by Ark Design Build to meet the specific needs of their client. The annexe features an open-plan living area with a well-equipped kitchen, a bedroom with custom shelving around a pull-down bed, and large sliding and bi-fold doors that open onto a composite deck. The thoughtful design maximises natural light while ensuring privacy. Known for their attention to detail, Ark Design Build offers a full turnkey service, managing everything from the design and planning process to construction and final connections to mains services.
This 52 sqm L-shaped one-bedroom annexe by Annexe Spaces offers a comfortable and stylish living space, tailored to the client’s needs. The design features a double bedroom with fitted wardrobes and an en-suite shower room, alongside a U-shaped kitchen that opens into a bright living area with wide sliding doors leading to the garden. The exterior combines Thermowood cladding and cement fibre boards for a low-maintenance finish. Annexe Spaces provided a full ‘One Stop Shop’ service, handling the entire process from design to final utility connections and Building Control sign-off.
This 52.25 sqm (9.5m x 5.5m) one-bedroom garden annexe by White Peak Design & Build features a bright, multifunctional kitchen-living area, a spacious bedroom, and an accessible bathroom. The design incorporates large feature windows that flood the living space with natural light, supported by a steel framework. The exterior combines dark grey cement fibre board with kiln-dried Western Red Cedar for a modern look. White Peak handled the entire project, including significant groundworks, delivering a fully move-in-ready home tailored to the client’s needs.
This 54sqm bespoke garden annexe, designed and built by Annexe Spaces, demonstrates how tailored living spaces can be created for future-proofed retirement living. Measuring 9m by 6m, this contemporary annexe was built under the Caravan Act with a Lawful Development Certificate, saving the client significant VAT costs. Designed in collaboration with the client, it features an L-shaped living area with a modern kitchen, a spacious bedroom with veranda access, and a fully equipped shower room. Annexe Spaces managed all aspects of the project, including planning and foundations, delivering a move-in ready home within 12 weeks.
This 57 sqm one-bedroom annexe, designed by AMC Garden Rooms, offers a spacious, independent living space for a family in Hemel Hempstead. Built under the Caravan Act, the annexe features a 9.5m x 6m L-shaped layout with a large kitchen-living area and garden views from both the living room and bedroom. A hardwood deck links the two wings, providing an outdoor seating area. The annexe includes a well-specified en-suite bathroom and a welcoming entrance hall with its own front door. Externally, the low-maintenance design combines Thermowood cladding and durable Cembrit fibre boards. AMC Garden Rooms managed the entire project, from design to final utility connections, delivering a fully compliant and ready-to-use home.
This 87.45 sqm garden home, designed by A Room in the Garden, reunites a family with their farmland in Oxfordshire. Built under the Caravan Act, the home includes a spacious farmhouse-style kitchen, a living area with views of the paddock, and a luxurious bedroom with an en-suite. The exterior features redwood timber cladding and Anthracite Grey accents, blending seamlessly with the rural surroundings. A Room in the Garden handled the entire project, including securing a Lawful Development Certificate and constructing the home on a removable ground screw foundation.