Planning permission vs building control: what’s the difference?

Planning permission is all about how your project fits into your neighbourhood. It’s handled by your local planning authority, usually your council, and it looks at things like:

• How your build affects neighbours, including privacy and sunlight
• The overall appearance of your home
• Whether it fits the character of the local area
• Impact on traffic, parking, and local services
• Any restrictions due to conservation areas or listed building status

In short, planning permission is about what your home will look like and how it fits into the world around it.

You usually need planning permission for things like:

• Building something new, such as an extension or a new house
• Major changes to the structure of a building
• Changing the use of a building, for example, turning a house into flats

Some smaller projects fall under what’s called permitted development, which means you might not need full planning permission. But even then, it’s worth checking. You don’t want to get halfway through a build and find out you’re on the wrong side of the rules.

Where planning permission is about how things look and fit in, building control is about how things are built.

This is where safety, standards, and structural integrity come into play. Building control ensures your project meets all the technical requirements, including:

• Fire safety
• Energy efficiency
• Structural soundness
• Damp protection and insulation
• Proper drainage and ventilation
• Accessibility for people of all abilities

These rules are part of the UK’s Building Regulations, and they apply to most building work, even if you don’t need planning permission.

Your local authority, or a private approved inspector, will check your plans and carry out inspections at key stages of the build. At the end, they’ll issue a completion certificate to confirm everything has been done to standard.

Skipping either of these can lead to major headaches. Without planning permission, you might be ordered to tear down what you have built. Without building control approval, your new space might not be safe or insurable, and you may not be able to sell your home in the future.

At Ohmega, we’ve seen the damage poor builders can do when they skip steps or cut corners. It’s not just about ticking boxes, it’s about protecting your home, your investment, and your peace of mind.

We don’t expect you to navigate all this alone. When you work with Ohmega Construction, we manage the process from start to finish:

• We advise whether planning permission is needed based on your ideas
• We work with trusted architects and planning consultants if required
• We liaise with building control to make sure every stage passes inspection
• We keep you updated so you always know what’s happening, and why

We believe the best results come from doing things properly, and that means no shortcuts. Just honest advice, smart planning, and craftsmanship that lasts.

Say you’re converting your loft into a bedroom and en suite. You might not need planning permission if it falls within permitted development rules, but you will need building control approval to make sure the floor is strong enough, the stairs are safe, and the room has proper fire escape routes and insulation.

That’s where we come in. We’ll make sure the conversion isn’t just beautiful, it’s compliant, future proof, and done right the first time.

Planning permission and building control serve two different but equally important purposes. One is about what you build, the other is about how you build it.

At Ohmega Construction, we believe in doing things right, not just fast. That means clear guidance from day one, full compliance with every regulation, and no surprises along the way.

Thinking about a project and not sure where to start? We’re happy to talk it through, explain what permissions might apply, and help you take the next step with confidence.

Let’s elevate everyday living, together and with peace of mind.