Garden Annexes 55sqm and Above
Updated: 9 March 2026
On this page, we are showcasing garden annexe projects that have a footprint of 55 square metres and above. These larger garden annexes are designed to create comfortable living spaces for multiple occupants. As you'll see in the examples below, this size of footprint allows designers to incorporate two or more bedrooms, as well as useful areas like utility rooms, welcoming entrance halls, and practical storage rooms. Each garden annexe is tailored around the needs of its occupants, down to the finer details like incorporating a cat flap or custom storage.
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Each project featured here has been customised to meet the owner's specific needs and the available space in their garden. These annexes are designed as self-contained homes for a relative to live independently, while remaining close to family, offering a balance between privacy and proximity.
These garden annexes have been designed to comply with either Full Planning Permission and Building Control regulations for permanent residences, or have been classified as mobile homes under the Caravan Act. In the latter case, a Lawful Development Certificate confirms their legal status, ensuring compliance with all necessary regulations for independent living spaces.
We hope these projects inspire you and show the potential for creating spacious, flexible homes within this larger footprint range. The projects are listed by size, from smallest to largest.
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This page looks at annexes 55sqm and bigger:
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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 60 sqm two-bedroom granny annexe by Timeless Garden Rooms was designed to provide independent living for an elderly family member, allowing her to stay close to loved ones. The bespoke 12m x 5m annexe includes a rear "pod" for the shower room, optimising space usage. The thoughtful layout features an open-plan living area with a vaulted ceiling, a well-equipped kitchen, two bedrooms, and a spacious shower room. Timeless Garden Rooms handled the entire process, from design to securing Planning and Building Control approvals, ensuring the home is futureproofed with accessible features like wide doors, underfloor heating, and a ramp.
This 60 sqm two-bedroom garden annexe by Timeless Garden Rooms was designed to create a fully accessible home for a relative diagnosed with a debilitating illness. The annexe includes a large bedroom for a specialised medical bed and a second bedroom for a live-in carer, ensuring both comfort and practicality. French doors with sidelights connect the living space to the garden, filling the home with natural light. Timeless Garden Rooms handled every aspect, from design to construction and Building Control sign-off, offering a comprehensive turnkey service tailored to the family's needs.
This 60 sqm two-bedroom garden annexe, designed by Timeless Garden Rooms, serves as both self-contained guest accommodation for family visits and an Airbnb rental. With two 3m x 3m bedrooms and a spacious 6m x 5m living area featuring a compact Elfin kitchenette, the annexe offers comfortable living for guests. A Cedar shingle roof and deep covered veranda add charm, providing the perfect spot to relax while overlooking the garden and smallholding. Timeless Garden Rooms managed the entire process, from planning approval to Building Control sign-off, ensuring compliance with local conservation conditions and modern building standards.
This 60.86 sqm two-bedroom garden annexe by Annexe Spaces provides a modern, self-contained living solution for families managing multi-generational living. With a footprint of 8.95m x 6.80m, the annexe includes two spacious bedrooms, a well-equipped kitchen, a shower room, and an open-plan living area. The design features abundant glazing, including French doors and tilt-and-turn windows, to create a bright, airy atmosphere with easy garden access. The exterior combines white render and Anthracite Grey cement particle boards, offering both style and durability. Annexe Spaces handled all aspects of the project, from groundworks to final utility connections, ensuring a seamless, turnkey experience.
This stylish 65 sqm two-bedroom, two-bathroom garden annexe by A Room in the Garden was designed as a retirement home at the end of the clients' garden, allowing for independent living while staying close to family. Built under the Mobile Home Act for VAT savings, the annexe offers a high-spec finish, with an open-plan living space, well-equipped kitchen, and crittall-style sliding doors. The design is modern, with exposed beams and heating pipes adding a contemporary edge. A low-maintenance exterior combines corrugated metal and timber cladding, while performance glazing ensures comfort year-round. A Room in the Garden handled the entire project, delivering a move-in-ready home.
This 70.78 sqm L-shaped two-bedroom annexe by AMC Garden Rooms was designed as independent living accommodation for teenage children, offering privacy while remaining close to the family home. The bespoke layout includes two spacious double bedrooms, a stylish shower room, a utility room, and a light-filled living area with double-aspect windows overlooking the newly landscaped garden. Finished to a high specification with a colour-drenched interior, quartz kitchen worktops, and antique brass fittings, the annexe combines style and practicality. AMC Garden Rooms managed every stage, from design to mains connections, delivering a move-in ready home with low-maintenance black Cedral Lap cladding.
This 85 sqm two-bedroom garden annexe by Timeless Garden Rooms provides a spacious and flexible living solution, ideal for families caring for older relatives while maintaining independence for both households. The L-shaped design includes an open-plan living room, kitchen, and dining area, with two bedrooms, each featuring en-suite bathrooms accessed via space-saving pocket doors. The well-equipped kitchen offers ample storage and a dining area, and the covered veranda, accessible from all rooms, provides a lovely outdoor seating space. Timeless Garden Rooms managed the entire project, from planning permission to final construction, ensuring a stress-free, fully compliant build.
A Room in the Garden created this 3-bedroom garden annexe under mobile home rules, bypassing traditional planning permissions. Designed for a mother and child, it features floor-to-ceiling glazing connecting to the outdoors. The open-plan living area includes skylights and a separate utility room. The family bathroom has both a bath and shower, while one bedroom doubles as a music studio with its own entrance. The exterior combines timber and dark grey metal cladding with decorative slatted panels. Built on sloping ground using a groundscrew foundation, the annexe is supported by a redwood deck with integrated steps. The company provided full-service design and construction.
This four-bedroom log cabin by Norwegian Log has reunited Wendy, Wayne, and their two children on their family land. Previously living apart due to work commitments, the family chose a log cabin as an alternative to a traditional house, which would have been difficult to gain planning permission for. Built under the Caravan Act, the cabin received a Certificate of Lawful Use, allowing the project to proceed. Wendy designed the flexible interior, which includes a master bedroom with an en-suite, a spacious family bathroom, a modern kitchen, and a large living room with bi-fold doors leading to a garden veranda. Norwegian Log’s bespoke design service helped the family create a home that perfectly suits their lifestyle.