Is loft conversion permitted development?
By Kem Maraz
Is loft conversion permitted development?
If you’re considering a loft conversion, one of the first things you might be wondering is whether you need planning permission. The answer to that question depends on a number of factors.
In most cases, you won’t need planning permission for a loft conversion, as long as the work falls within certain parameters. These are known as permitted development rights, which allow you to carry out certain types of development without seeking planning permission.
However, there are some exceptions to these rules, and it’s always worth checking with your local planning authority to make sure that your plans are within the permitted development guidelines.

Some of the things that might require planning permission include:
- Extending the roof space beyond the existing plane of the roof
- Adding a balcony or raised platform
- Altering the roof height or shape
- Installing windows that don’t meet certain requirements
It’s also worth noting that if your property is in a conservation area, planning permission will almost certainly be required, as there may be additional restrictions on development.
If you do need planning permission for your loft conversion, you’ll need to submit an application to your local planning authority. This can take several weeks to process, and there may be additional costs involved.

Summary
In summary, while planning permission isn’t usually required for a loft conversion, it’s always worth checking with your local planning authority to make sure that your plans are within the permitted development guidelines. If in doubt, it’s best to seek professional advice to ensure that you’re complying with all the necessary regulations.
Planning Design London offers expert advice and support on your loft conversion project. We have years of experience on designing home extensions in Bexley, Bromley, Croydon, Greenwich, Lewisham, Lambeth, Southwark, Dartford, Gravesham, Maidstone, Medway, Sevenoaks, Tunbridge, Malling.
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