03: Do You Need Planning Permission? What to Expect
Planning permission is probably the single biggest source of anxiety for people considering building work — so let's clear it up.
Do you actually need it?
Not everything needs planning permission. Many extensions fall under what's called permitted development, meaning you can build without formal approval, provided you stay within certain size and design limits. Working out exactly which category your project falls into is part of what we do early on, during feasibility — so you know from the outset what you're dealing with.
Getting formal proof — even when you don't need permission
Even if your project doesn't need planning permission, we'd always recommend getting a Lawful Development Certificate. It's formal written confirmation from the council that your project is legal, which gives you peace of mind now — and matters a lot later if you come to sell, since buyers' solicitors will often ask for exactly that proof.
How long it takes
If you do need permission, a standard planning application typically takes around eight weeks for a decision, though it can run longer if the council requests changes or additional information. We manage the whole process on your behalf — preparing the drawings, coordinating any specialist reports the council may require (such as ecology, heritage, or flood risk assessments), submitting the application, and handling any questions that come back from the planning officer.
What if it's refused?
It happens, but it's rarely the end of the road. A refusal usually comes with specific reasons, and in most cases we can revise the design and resubmit, or pursue an appeal where appropriate. The real safeguard against this is upfront — understanding what the council is likely to accept, and designing with that in mind from the very first sketch, rather than finding out after submission.
Experience genuinely matters here — knowing local planning policy, precedent, and what individual councils tend to favour makes a real difference to the outcome.
Frequently Asked Questions
How long does planning permission take?
A standard application typically takes around eight weeks for a decision, though this can extend if the council requests more information.
What is a Lawful Development Certificate?
It's formal written confirmation from the council that a project didn't need planning permission and is legally compliant — useful for peace of mind and often required when selling.
What happens if my planning application is refused?
In most cases the design can be revised and resubmitted, or an appeal can be pursued. Good upfront planning significantly reduces this risk in the first place.
If planning permission is the thing making you hesitate about starting your project, give us a call, or email us through our contact form — we can usually tell you early on exactly what you're dealing with.
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