Advice

The key planning distinction: a self-contained annexe needs permission as a new dwelling; ancillary accommodation may be PD. Here’s how councils decide.

Converting a garage to an annexe may or may not need planning permission depending on whether it becomes a self-contained dwelling. Here’s what applies.

An annexe can be permitted development if it remains ancillary to the main house. Here’s the line between PD outbuilding and a separate dwelling needing planning.

A garden annexe usually needs planning permission as it creates a new dwelling. Here’s when it can be permitted development and what councils look for.

Sheds and summerhouses are almost always permitted development. Here are the exact height limits, the 50% curtilage rule, and when you do need planning permission.