Hey everyone! I'm reaching out because I'm worried about a situation with one of my neighbors. They recently finished building an extension and have now raised a large part of their garden. My mom is quite anxious about this decision since it's been done without any consultation with her, and she has some worries regarding privacy, potential drainage issues, and whether this is even legal. She's done a bit of research but thought it'd be great to get some extra advice and reassurance from you all. From what we understand, it seems like they might be violating some rules. Thanks for taking the time to read this! Also, just a side note: my mom had a brief chat with them, and they mentioned they've probably raised it over 3 feet, which might require planning permission. Any insights would be super helpful!
4 Answers
You also want to consider drainage issues. If they’ve elevated their garden, it could affect how water flows and potentially lead to problems for the neighboring properties. It would be a good idea to mention this to your mom when she talks to them!
You might want to check out r/legaladviceuk for some specific legal advice too. They can provide guidance on planning laws and your rights regarding privacy and property alterations.
You’re right about needing planning permission! Raising a garden more than 30cm usually needs approval. Since they raised it more than that, it sounds like they might be in the wrong. It’s a big deal, especially if it affects drainage and privacy!
The best thing to do is check with your local council. They’ll have the most accurate info on what’s allowed with garden modifications like that. It’s definitely worth reaching out to them!

Thanks for confirming! We are concerned about the height and how it impacts everything.