Building Permits in the UK: What You Need to Know
If you’re planning a conservatory, garden room or any home extension, the first question is whether you need a building permit. The answer can save you time, money and a lot of headaches. In the UK, the rules are clear but often misunderstood, so let’s break them down in plain English.
When Do You Need a Building Permit?
Generally, any new structure that changes the external appearance of your house, adds floor space or alters the roofline requires planning permission. The Permitted Development (PD) rights let you build without a full permit if the project stays within specific limits – for example, a single‑storey rear extension that doesn’t exceed 4 metres in height. Anything larger, like a two‑storey addition or a substantial conservatory, pushes you into the formal permit process.
Don’t forget about listed buildings or properties in conservation areas. Even a small side extension can trigger a full application if the local authority deems it to affect the historic character of the area. Always check with your council’s planning portal before you start sketching.
How to Get Your Permit Quickly
The quickest way to a smooth permit process is preparation. Gather site plans, elevations, and a clear description of the work. Most councils now use online portals, so you can upload PDFs, CAD drawings or even simple sketches. Include details about materials, roof pitch and any neighbouring impacts – the more precise you are, the fewer back‑and‑forth questions you’ll get.
When you submit, pay the required fee (usually £200‑£400 for residential projects) and keep a copy of the receipt. The council has 8 weeks to decide. If they need more information, respond promptly; delays often come from waiting for you to supply missing documents.
For larger projects, consider hiring a Planning Consultant. Their experience with local council requirements can shave days off the timeline and reduce the risk of a rejected application. It’s an extra cost, but the peace of mind is worth it.
After approval, you’ll receive a “Planning Permission” document. This isn’t a building control sign‑off – you’ll still need a separate Building Regulations submission before the work begins. That step ensures structural safety, fire protection and energy efficiency.
Remember, starting construction without the proper permit can lead to enforcement notices, fines, or even a forced demolition. It’s far cheaper to get the paperwork right at the start.
In summary, check the PD rules first, submit a thorough application if you’re outside those limits, and keep communication open with your local council. With a solid plan, getting a building permit doesn’t have to be a nightmare.
Ready to start your conservatory or garden room? Pull out those measurements, log into your council’s planning portal, and get the permit process moving. The sooner you have the paperwork sorted, the sooner you can enjoy your new space.
