Planning Permission: When Do You Need It?
Many home improvements don't need planning permission — but some do. Getting it wrong can be costly. Here's a straightforward guide.
One of the most common questions homeowners ask before starting a project is whether they need planning permission. The answer depends on the type of work, the size of the change, and where you live. Getting it wrong can mean having to undo completed work — so it's worth understanding the basics.
What is permitted development?
Many common home improvements fall under 'permitted development rights' — meaning you can carry them out without applying for planning permission. These rights cover a wide range of work, including most loft conversions, single-storey rear extensions up to a certain size, and outbuildings within set limits.
When you will need planning permission
- Extensions that exceed permitted development limits in size or height
- Converting a garage into a living space in some cases
- Adding a storey to your home
- Work on a listed building or in a conservation area
- Changing the use of a building — for example, from residential to commercial
- Installing solar panels on a roof visible from a highway in some areas
How to check
The Planning Portal (planningportal.co.uk) has an interactive guide that covers most common projects. For anything complex or borderline, it's worth contacting Hart District Council's planning department directly — they offer a pre-application advice service.
A good tradesperson will flag planning permission requirements before work starts. If someone tells you permission isn't needed without checking, ask them to confirm it in writing.
This advice is provided for general guidance only and does not constitute legal or professional advice. Always consult a qualified professional for your specific situation.
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