Will I need planning permission for an annexe?

Quite possibly, yes. Annexes with plumbing and sleeping accommodation often need planning permission. We'll talk through your specific situation early on and can help with the application if needed.

Can I rent it out on Airbnb?

Many of our customers do exactly that. A well-built garden annexe in Cheshire can earn good short-term rental income. You may need to check your local council rules and get a short-term let licence.

Is it suitable for elderly parents?

It's one of the most common reasons people come to us. Your parents get their own independent space with their own front door, but they're close by if they need anything. The wet room upgrade makes it accessible too.

What plumbing is included?

We include a kitchenette with sink and worktop, a shower room with toilet and basin, and all the internal plumbing. We provide connection points for you to link up to the mains water and drainage.

How long does an annexe take compared to other garden rooms?

An annexe typically takes 7-10 working days because of the plumbing and additional fitout. It's still a lot faster than any extension or traditional build.

The Annexe

Self-contained space for family, guests, or income

From £18,000fully installed (guide price)*

9 sizes available

50mm Kingspan insulation

4–6 week build

10-year guarantee

What you get

What's included

An annexe is a proper self-contained living space in your garden. It's got everything: a kitchenette, a bathroom, a living area, and a bedroom space. Whether you're looking after elderly parents, giving a grown-up child their own front door, hosting guests, or even bringing in Airbnb income, an annexe is the way to do it without moving house.

For families looking after older relatives, an annexe is a game-changer. Mum or Dad have their own independent space and their own front door, but they're right there in the garden if they need anything. It's close enough to keep an eye on things but separate enough that everyone keeps their privacy. That balance matters a lot.

The build quality is the same as every room we make. Full insulation, proper electrics, double-glazed windows and doors. The difference is the plumbing. We fit a kitchenette with worktop, sink, and space for appliances, plus a shower room or wet room depending on your layout. It's a complete, self-contained living space.

Because of the size and plumbing, an annexe may need planning permission depending on your situation. We'll talk you through all of that early on and can help with the application if needed. Our pricing is fixed and includes everything: the build, the electrics, the plumbing, and full installation. The price you're quoted is the price you pay.

Full specification

Structural timber frame (min 45x95mm C16 graded)
50mm Kingspan insulation (floor, walls, roof)
Double-glazed windows and doors (aluminium or uPVC)
Full electrical package (consumer unit, sockets, lighting, external connection point)
Internal lining (painted plasterboard or timber cladding)
External cladding (Thermowood or composite options)
EPDM rubber roof with 20-year membrane warranty
Adjustable steel feet for levelling
Delivery and full installation
Kitchenette with worktop, sink, and appliance space
Shower room or wet room with plumbing
Hot and cold water supply connections
Waste water drainage connection point
Separate entrance door with lock

Example floor plan

How it's laid out

This is an example layout for The Annexe. Every room we build is tailored to your garden — the size, internal layout, door and window positions can all be adjusted to suit your space and how you plan to use it.

Sizes and prices