Garden Room & Annexe Projects We've Been Exploring

Since 2009, we have been writing articles about garden rooms and annexes, showcasing the versatility of these high-spec, insulated garden buildings. We aim to inform buyers of their options and showcase the work of garden room companies, large and small.

Aerial view of The Nest by SIPS Garden Rooms, a wedge-shaped holiday cabin narrowing to a point among the trees

A Wedge-Shaped Holiday Cabin in Dorset by SIPS Garden Rooms

The Nest, a holiday cabin for two near Milton Abbas in Dorset, is a wedge-shaped SIP building by SIPS Garden Rooms, raised up at the edge of a copse and showing how SIP panels can be shaped beyond a rectangle.

Booths Garden Studios granny annexes: buy outright from £49,995 or rent from £745 a month plus installation

Booths Garden Studios Now Rent Granny Annexes

Booths Garden Studios now rent self-contained granny annexes as well as selling them. Families pay an installation fee and a monthly rent from £745, with the option to keep renting, buy the annexe, or return it.

Designer Garden Rooms garden room with sage cladding, a covered seating corner, white raised beds and a lawn

A Family Garden Room with a Kitchen and Cloakroom by Designer Garden Rooms

A family garden room by Designer Garden Rooms, a Scottish company from Troon, Ayrshire. It works as a second living room, with a fitted kitchen, a cloakroom and a covered seating area, and the same team landscaped the garden around it.

A Warwick Buildings garden gym with a treadmill, bike and multi-gym on foam mats, a mirror wall and windows opposite

Planning a Home Gym Garden Room With Warwick Buildings

How to plan a home gym in a Warwick Buildings garden room, from ceiling height and window placement to flooring, sockets and ventilation, and how their online configurator lets buyers shape the layout around their equipment and see the price.

Mobile home annexe by A Room in the Garden on a sloping lawn, with a dark-clad raised base and central timber stair

Mobile Home Annexe for a Steeply Sloping Garden by A Room in the Garden

A mobile home annexe by A Room in the Garden, raised on ground screws on a steeply sloping garden with views to the South Downs. Natural and dark-painted Redwood and a flexible layout serve guests, family and an art studio.

A granny annex with kitchen and shower room in Somerset

For Business or Pleasure and Everything in Between…

Crusoe Garden Rooms Limited creates versatile, bespoke garden spaces tailored for diverse needs, from home offices and studios to gyms and granny annexes. Built with durable, insulated timber framing, each room blends comfort with functionality, reflecting each client’s unique vision year-round.

Green Retreats G5 garden room with sliding doors open, showing a home cinema with a red reclining sofa inside

G5 Garden Room Fitted Out as a Home Cinema by Green Retreats

Green Retreats has fitted out a G5 garden room as a home cinema at their Buckinghamshire showroom, with charcoal walls, layered lighting, a snack bar and a power-reclining Cinesound sofa from DFS, plus what to plan for in your own.

Cedar-clad residential annexe by SIPS Garden Rooms with a sedum living roof, sliding doors and a lawn in front

95sqm Residential Annexe in Essex by SIPS Garden Rooms

A 95sqm residential annexe in Essex by SIPS Garden Rooms, giving a family member an independent home steps from the house. Two large bedrooms under a mono-pitch living roof, two air source heat pumps, and delivered turnkey in eight weeks.

Swift Unlimited garden room with a white render gable, cedar and black glazing, above a new dry stone retaining wall

A Golf Simulator Room, Gym and Office Under One Roof by Swift Unlimited

A 16m x 5m garden room by Swift Unlimited, holding an office, a WC, a gym and a golf simulator room with a bar. Planned alongside the garden’s new landscaping, it was built in seven weeks on a sloping site.

Open-plan kitchen and living space in The Green Room's Ridgemount annexe, with a vaulted ceiling and oak-effect floor

A One-Bedroom Annexe with a Full-Size Kitchen by The Green Room

The Ridgemount is a 50sqm one-bedroom annexe by The Green Room, built in Leicestershire for a family member. It has a full-size kitchen, a double bedroom with built-in wardrobes and a level-access walk-in shower, all under a vaulted ceiling.

Light grey Marley board garden room by Cabin Master with a glazed corner of sliding doors and full-height side glazing

Home Waxing Studio by Cabin Master

A 5m x 2.8m home waxing studio in Leicestershire by Cabin Master, with a glazed corner, light grey Marley board and air conditioning. One room holds a treatment couch, a desk and cross-trainer, in Steam Engine Green and Antique Cream.

One-bedroom garden annexe by Timeless Garden Rooms, clad in stained reclaimed boards with green-blue framed windows

A One-Bedroom Annexe in Reclaimed Barn Boards by Timeless Garden Rooms

A 10m x 5m one-bedroom annexe by Timeless Garden Rooms replaces an old shed in a forgotten corner of the garden. Reclaimed barn boards, Crittall-style glazing and a copper-topped reclaimed kitchen give a simple modern form real character.

Black-clad L-shaped garden office by Garden Spaces with French doors, a canopy and a paved surround in a landscaped garden

L-Shape Garden Office with Storage by Garden Spaces

An L-shaped garden office in Cobham by Garden Spaces, with a hidden store room that works around an established tree. Longer ground screws, tight access and a SIP structure show how a compact footprint can still hold a comfortable office.

Corner of a garden annexe where vertical Western Red Cedar meets dark grey Hardie Plank cladding beneath a stepped flat roof

A 9m x 5m Self-Contained Garden Annexe in Hampshire by Executive Garden Rooms

A 9m x 5m self-contained garden annexe in Hampshire by Executive Garden Rooms, built for an elderly relative as an alternative to buying a one-bedroom flat. A sage green kitchen, bedroom, shower room, full planning permission and Building Control sign-off.

Cedar-clad garden annexe by Swift Unlimited with sliding doors open onto a timber deck and grey planters

Designing an Annexe Around the People Who Will Call It Home

A guest post from Swift Unlimited on how a garden annexe should be designed: listening to the person who will live there before drawing a plan, testing ideas with mood boards, developing the concept and costings together, then checking it all on site.

Anthracite Grey garden room by Lux Garden Rooms between a garage wall and a fence, two tall windows facing the lawn

Garden Karaoke Room Built to Keep the Noise In by Lux Garden Rooms

A 4.5m x 3.5m karaoke and entertainment room in Manchester by Lux Garden Rooms, built behind the garage. SIPs walls with resilient bars and two layers of SoundBloc plasterboard, Anthracite Grey cladding and a corner of glazing.

L-shaped cedar-clad garage by SIPS Garden Rooms wrapped around a mature tree, with a car visible through the bi-fold doors

An L-Shaped SIP Garage for a Collection of Luxury Cars by SIPS Garden Rooms

An L-shaped SIP garage in Bromsgrove by SIPS Garden Rooms, wrapped around an established tree to house a collection of luxury cars. Supplied as a fire-protected weathertight shell, planning handled, and fitted out as a showroom by the owners’ trades.

Cedar-clad garden room by Sanctum Garden Studios with bifold doors folded back onto a porcelain-paved patio

A 7.2m x 3.5m Garden Room With Integrated Storage by Sanctum Garden Studios

A 7.2m x 3.5m bespoke garden room by Sanctum Garden Studios, with Western Red Cedar fitted in framed vertical panels, bifold doors onto the garden, a bar and living space inside, and a separate storage room built into the footprint.

Western Red Cedar is used on the forward facing elevations

Why This Derbyshire Client Chose Crusoe Garden Rooms

Some clients draw their own outline plan and put it out to tender. This Derbyshire client did that, and Crusoe Garden Rooms built the result: an 8m x 4m garden room in cedar and Fusion with two sets of bi-folds.

Garden Spaces gym with ensuite and storeroom

A Garden Gym in Cambridge, From Design to Planning Application

Garden Spaces are taking a 3.25m x 8.0m garden gym through planning in Cambridge, working the design up as lifelike images set into a photograph of the client’s own garden, so the planners and the neighbours can see it properly.

Multi-use garden room by Eden Garden Rooms clad in vertical Western Red Cedar, with two sets of anthracite grey French doors

Multi-Use Garden Room in Essex by Eden Garden Rooms

A 7.5m x 4m multi-use garden room in Essex by Eden Garden Rooms, holding a gym, a music room and a pool changing area. Oak sliding doors between the two main rooms let them work separately or as one space.

From Summerhouse to Cosy Garden Room

Cosy Garden Rooms replaced an interlocking timber summerhouse in Sheffield with a 5m x 4m insulated garden room on the same spot, clad in composite cedar and anthracite Hardie® Plank, heated by far infrared panels and finished in five days.

Modern Garden Rooms Canopy Range finished in Charcoal composite wood cladding with matching decking and doors and windows

Composite Wood Cladding in Charcoal: Three Modern Garden Rooms Projects

Three recent Modern Garden Rooms projects share the same Charcoal composite wood cladding, decking and uPVC frames. A look at why one colour across the whole exterior works so well, and at the detailing that keeps composite boards looking sharp.

View from the lounge sofa over the bar and down into the lit simulator screen beyond

Garden Entertainment Suite Built Around a Golf Simulator

Garden Entertainment Suite Built Around a Golf Simulator Published: 23 August 2026Reading Time: 5 minutes 20 seconds Golf simulator rooms are a rapidly growing part of the Guide, as more people invest in this type of sports entertainment room at home. In most of the projects featured, the owners have combined their love of golf […]