Website terms

1. Who we are

1.1This website is run by DZP Studio Ltd, registered in England and Wales, company no. 16197011, registered office 71-75 Shelton Street, London WC2H 9JQ.

2. Copyright

2.1Everything on this website belongs to DZP Studio Ltd or is used with permission: the words, drawings, photographs, design and layout, and the interactive tools, including the extension checker. © 2026 DZP Studio Ltd. All rights reserved.

2.2You're welcome to view it, print a page for your own use, and share links to it.

2.3You may not copy, reproduce, adapt, sell or republish any of it, in whole or in part, or use it to train or feed an AI tool, without our written permission.

3. Information, not advice

3.1Our guides, figures and interactive tools are general information to help you understand your options. They aren't planning, legal, valuation or other professional advice, and you shouldn't rely on them to decide whether to build, buy or sell.

3.2Whether a project needs permission depends on your property's own circumstances. Only the council can confirm it formally, for example with a lawful development certificate.

3.3We work to keep the site accurate and up to date, but the rules change and we can't guarantee it's free of errors.

4. Other websites

4.1Links to other websites are there for convenience; we're not responsible for what's on them.

5. The law

5.1These terms are governed by the law of England and Wales.