Building Permits – Simple Guide for Homeowners and Contractors

If you’re planning a new loft, a bathroom remodel, or a small extension, the first thing you should check is whether a building permit is required. Skipping this step can lead to fines, delays, or even having to undo the work. Let’s break down the basics so you know exactly what to do.

When Do You Need a Permit?

In the UK, most structural changes need a permit from your local council. Adding a new wall, changing the roof pitch, or installing larger windows are common triggers. Minor updates like painting or replacing flooring usually don’t need one, but always double‑check the council’s list. If you’re unsure, a quick phone call can save you a lot of trouble later.

Steps to Get Your Permit Quickly

1. Gather your plans. Draw clear sketches of the work, including dimensions and materials. Simple CAD drawings or hand‑drawn plans work as long as they’re legible.

2. Check local rules. Each council has its own guidelines, often published online. Look for sections titled “Planning Permission” or “Building Regulations.”

3. Complete the application form. Most councils use an online portal now. Fill in the details, attach your plans, and pay the fee (usually £100‑£500 depending on project size).

4. Submit supporting documents. This can include structural calculations, energy performance reports, or a surveyor’s statement. The more complete your file, the faster the review.

5. Await the decision. Councils typically respond within 8‑12 weeks. If they ask for changes, update your plans promptly to avoid further delays.

6. Get the approval. Once approved, you’ll receive a “building notice” or “full plans approval.” Keep this paperwork on site – inspectors may ask to see it.

7. Schedule inspections. Most projects require at least two site visits: one at the start of the work and another when it’s finished. Book these early to keep the timeline smooth.

Common pitfalls include forgetting to notify neighbours (required for some extensions), underestimating the cost of the permit, and ignoring fire safety rules. A small oversight can turn a simple project into a costly headache.

If you’re working with a contractor, make sure they’re familiar with the permit process. Many reputable builders will handle the paperwork for you, but it’s still worth double‑checking that the correct documents are filed.

For DIY enthusiasts, there are plenty of resources online. Websites like the Planning Portal offer step‑by‑step guides and template forms. A quick search for “building permit [your county]” will usually pull up the right page.

Remember, a building permit isn’t just bureaucracy – it ensures your project is safe, complies with energy standards, and won’t cause problems when you sell the house later. Taking the time to get it right protects both your investment and your peace of mind.

Got a specific question? Drop a comment below or give us a call. We’ve helped dozens of homeowners navigate the permit maze, and we’re happy to share tips that fit your situation.