If you’re planning to build a garden outbuilding — whether it’s a home office, hobby room, or just some extra space — you may be wondering if you need planning permission. In many cases, the answer is no, thanks to Permitted Development Rights. But even if permission isn’t needed, there’s one step that can give you peace of mind: applying for a Certificate of Lawfulness.
✅ What Is It?
A Certificate of Lawfulness (Proposed Use or Development) is a legal document from your local council confirming that your garden outbuilding is lawful and doesn’t require planning permission.
🛠️ Why Bother if Planning Isn’t Needed?
At NAPC, we always recommend applying for a Certificate of Lawfulness before construction — and here’s why:
- Avoid Future Hassle
Even if your outbuilding is permitted, the council (or a neighbour) could challenge it. A certificate protects you from any enforcement action. - Simplify Re-sale or Re-mortgaging
If you ever sell your home, solicitors and lenders will ask if your outbuilding was built lawfully. Having a certificate makes everything easier and faster. - Prove You’ve Followed the Rules
A certificate is formal proof that your build complies with planning rules. It’s helpful if you face objections, questions, or want to build more in future. - Peace of Mind
Most importantly, it gives you confidence. You can move ahead knowing everything’s above board.
🏡 Need Help?
NAPC specialises in garden outbuildings, annexes and mobile homes — and we handle Certificate of Lawfulness applications for clients across the UK. Whether you’re in the early design phase or ready to submit, we can take care of the whole process.
👉 Are you wondering – Do I Need a Certificate of Lawfulness for My Garden Outbuilding?
Get in touch — and let’s make sure your project is covered from day one.
