Can I Build A Garden Annexe Without Planning Permission?
At Hawksbeck Annexes, we specialise in designing and building stunning annexes with a full turnkey service, taking care of everything from design and planning to construction and interior finishes.
Permitted Development vs Planning Permission
In some cases, you may be able to build a garden annexe under Permitted Development rights, meaning you do not need to apply for planning permission. However, strict criteria must be met for this to apply:
The annexe must be considered an “incidental building” to your main house. This means it can’t be a completely self-contained residence with full living facilities if you’re claiming Permitted Development rights.
It must not exceed 2.5m in height if built within 2m of a boundary, and the total footprint and placement must adhere to outbuilding regulations.
The annexe should not be used as a separate dwelling. For example, a garden office with a kitchenette or a gym room is incidental, whereas a fully self-contained granny annexe often requires planning.
When Planning Permission is Required
If your annexe will be used as a full-time residence for a family member, or as a rental unit, planning permission is usually required. This is because it becomes an independent living space, and local councils treat this differently from a standard garden room.
At Hawksbeck Annexes, we handle all aspects of your planning application to ensure a smooth, stress-free process.
Our experienced team prepares detailed architectural drawings, manages communication with the council, and advises you on any conditions or lawful development certificates needed for peace of mind.
Lawful Development Certificates
Even if your project qualifies under Permitted Development, we recommend applying for a Lawful Development Certificate (LDC).
This provides official confirmation from your local authority that your annexe does not require planning permission, protecting you if you sell your home in the future.
Why Choose Hawksbeck Annexes
Our full turnkey service covers:
- Free initial consultation and feasibility assessment
- Bespoke garden annexe design tailored to your needs
- Planning permission management or LDC applications
- Complete build, interior finishes, and utility connections
We build annexes for elderly relatives, adult children, home offices, and lifestyle spaces across the UK with superior quality, fast construction times, and transparent pricing.
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Hawksbeck Annexes
Kings House
101-135 Kings Road
Brentwood
Essex
CM14 4DR