The Annexe range
Our Annexe range is available as open-plan studios or with partition walls and can be customised to suit your needs. Complete with a kitchen, shower-room, heating, electrics and fully decorated, once constructed, our Annexes are ready to move into – just add furniture!
We provide a planning consultancy service for all our annexe customers, working with you to ensure that your garden room is lawful and complies with local planning and building regulations.
The Garden Room & Annexe Company specialises in constructing fully insulated, habitable garden annexes, granny annexes, school classrooms and other outdoor spaces that meet building regulations for habitable accommodation. Our Annexe wall, floor and roof panels have 25% more insulation ensuring you keep toasty in the winter and cool in the summer.
All our garden rooms and annexes are constructed to the highest standard. We have an array of optional extras to personalise your new room. We want your garden room to be an extension of your home, so please let us know if there’s anything you would like us to add to your build.
Our prices include VAT, delivery and installation with no hidden costs, ready for you to move in.
Find your size: depth down the side, width across the top. Every price includes VAT, delivery and installation, with foundations and electrics.
| Depth ↓ Width → | 5.5m | 6.1m | 6.7m | 7.2m | 7.8m | 8.1m |
|---|---|---|---|---|---|---|
| 3.1m | £61,050 | £63,470 | £65,945 | £70,290 | £74,635 | £78,980 |
| 3.7m | £63,470 | £65,945 | £70,290 | £74,635 | £78,980 | £87,670 |
| 4.3m | £65,945 | £70,290 | £74,635 | £78,980 | £87,670 | £87,670 |
| 5m | £70,290 | £74,635 | £78,980 | £87,670 | £92,015 | £98,625 |
Need a different size or layout? Every room can be made to measure – ask us for a quote.
Thermowood or larch cladding is included in your garden room costs, but there are plenty of ways to make your Annexe unique to you.
£80 per m²
Thermowood or larch cladding is included in your garden room costs, but we have a range of other options for you to choose from. Western Red Cedar is naturally aromatic with a reddish-brown colour and natural durability. Shou Sugi Ban is burnt larch which can be charred to varying degrees depending on your colour preference.
£20 per m²
Composite cladding is an additional £20 per m², and comes in a choice of five different colours.
£130 per m²
Install sedum plants on the roof of the studio. Includes additional reinforcing roof joists to accommodate extra weight (100kg/m²), plus drainage and water retention layers, vermiculite-enriched soil, and a cobble border.
£99 per m²
Install electric underfloor heating in garden room connected to a wifi controlled thermostat.
£340
2000w wifi controlled wall mounted heater.
£60 per m²
Engineered Oak Flooring.
From £2,300
Install a 1.2m long kitchen unit with worktop, stainless steel sink, hot water tap and drainer. Excavate trench for pipework connecting to water supply and mains drainage, and reinstate lawn.
From £3,500
Construct a separate cloakroom with insulated stud walling, door and 450mm x 450mm frosted top hung window. Supply and install WC, and sink with heater tap. Excavate trench for pipework connecting to water supply and mains drainage, and reinstate lawn.
From £6,500
Install a shower room in studio which includes a shower with tray and glass screen, compact toilet and basin. Excavate trench for pipework connecting to water supply and mains drainage, and reinstate lawn. Shower walls are aqua-panelled to height of glass screen. Electric wall mounted shower and electric water heater tap. Heated towel rail. 450mm x 450mm top hung window.
From £2,200
Install Air Conditioning Unit.
From £260
Install armoured Cat 5 internet cable and socket, running from studio to back of house.
£100
Install outdoor double socket.
£120
Install PIR light on side of studio.
Book a free, no-obligation design consultation and site survey. We’ll help you choose the right size and finish and give you a detailed, fully itemised quote.
