Garden Room & Annexe Design in Essex
Bespoke garden rooms and annexes designed around your home and lifestyle.
Garden Rooms
Annexe Design
A garden room can create flexible additional space for a home office, studio, gym or somewhere to relax.
We’ll design a space that works for your needs while feeling naturally connected to your home and outdoor surroundings.
Create independent living space that still feels connected to your main home.
Whether it’s a separate outbuilding or an extension to your existing property, we design bespoke annexes around the needs of your home and those using the space.
Planning Made Simple
Detailed Design
Depending on the size, location and intended use, your garden room or annexe may require planning permission.
We’ll advise on the appropriate route, prepare the necessary architectural drawings and guide you through the planning process.
Once your design is agreed, we can prepare the technical and Building Regulations drawings required to move your project towards construction.
These give your builder the information needed to accurately price and build your garden room or annexe.
What Our Customers Think
"CET designed our side / garage extension, was very helpful on site and clearly has an eye for working within site constraints and foreseeing potential issues."
Joe Palmer
"CET have helped us with 2 projects now and have been excellent both times... I will use CET again and would recommend them to anyone."
Lee Gurton
"We had a great experience using CET... Would 100% recommend."
Daniel Gracie
"Can't recommend CET Architectural Designs enough! Charlotte is very professional and very helpful, the best! I'm a very happy customer."
Gladis Woods
FAQs
Do I need planning permission for a garden room?
Not always. Some garden rooms may be possible under Permitted Development rights, depending on factors such as their size, height, location and intended use. We can assess your plans and advise on the appropriate route.
Do I need planning permission for an annexe?
An annexe may require planning permission depending on its design, location and how it will be used. We can review your project and help determine what permissions are likely to be required.
What can a garden room be used for?
Garden rooms can provide flexible space for a home office, studio, gym, hobby room or relaxation space. How you intend to use the building can also affect the planning and Building Regulations requirements.
Can you design a garden annexe for a family member?
Yes. We can design an annexe around the needs of your family and property, creating additional living space that provides independence while remaining connected to the main home.
Do garden rooms need Building Regulations approval?
It depends on the size, construction, location and use of the garden room. We can advise on the requirements for your project and prepare technical and Building Regulations drawings where needed.
Where do you design garden rooms and annexes?
We’re based in Leigh-on-Sea and provide garden room and annexe design across Essex, including Southend-on-Sea and surrounding areas.