Sussex Garden Rooms

One bedroom pitched roof annex

Typically local authorities prefer 2.5m flat roof builds, however in certain circumstances councils will request pitched roof alternatives to match the houses within the area. We can provide our 7m x 5m annex (which can be larger) with a pitched roof (3m or 4m ridge height), which can be finished with tiles or timber shingles. Internally we can create an annex with a significant amount of overhead space with a vaulted ceiling.

One bedroom pitched roof annex

Typical configurations

We can design and build your annex to any specs you require – these are some of the most popular options.

Garden annexes

More options

We supply and build annexes in a range of sizes. Bigger, smaller, more bedrooms – you decide.

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Tell us about your requirements — no obligation, no pressure


Design it your way

We work closely with you to ensure every detail of your annex is exactly how you want it – from the size and shape to the cladding, flooring, doors and windows.

Get in touch about designing your custom garden annex now:


Customer stories

Kath & Bob

Burgess Hill, East Sussex

“The annex is exactly what we asked for, with extras added at Will and Lee’s suggestions which have made it even better”

Sussex Garden Rooms designed a stylish one bedroom annex for Kath & Bob, complete with an open plan kitchen and living room, bedroom, and en-suite bathroom.

Our annexes

Design inspiration

Just some of the fantastic garden annexes we have designed and built for our customers over the years.


Frequently Asked Questions

Yes. You can build an outbuilding under permitted development, but to enable someone to permanently live in the annex requires planning permission. The main factor to consider is that your annex should not occupy more than 50% of your available garden, and ideally be a maximum of 2.5 metres in height.

Yes, at Sussex Garden Rooms we can handle all aspects of the planning application – including all necessary plans, drawings and dealings with the local authority. Our planning package service costs £1,500 inc VAT.

A garden annex build period is typically 4-6 weeks from start to completion.

We predominantly use ground screw foundations but also have a pad system to enable us to build up from an existing concrete base. All foundations costs are included.

All aspects of your annex can be customised to suit your needs and preferences, including the layout and external cladding, kitchen and bathroom designs, and aesthetic aspects like flooring and paint. Some of these may be subject to additional specification and costs. Read more in our full FAQ.

100%. Every single annex we build is totally bespoke. If you need ramps, wide doors, special bathrooms or anything else, please let us know – we’d love to help!

Get in touch

Tell us about your requirements — no obligation, no pressure