The short version
In the UK, some home extension work can be carried out under Permitted Development (PD), meaning you may not need to apply for full Planning Permission. However, PD comes with rules and limits, and not every property qualifies.
This article is general guidance only — always confirm your specific situation with your local authority or a professional.
What is Permitted Development?
Permitted Development is a set of rights that allow certain types of work to be done without submitting a full planning application.
Common examples (depending on your property and area) include:
- Single-storey rear extensions within size limits
- Certain loft conversions (within volume limits)
- Some outbuildings and small alterations
When might you need Planning Permission?
You may need Planning Permission if:
- The extension exceeds PD size/height limits
- You’re in a conservation area or your property has restrictions
- It materially changes the appearance of the building
- You’re extending to the front of the property
Other approvals still matter
Even if planning isn’t required, you may still need:
- Building Regulations approval
- Party Wall notices (if applicable)
- Structural design for openings/steelwork
Practical tip: request a clear written scope
When you request a quote, share your postcode and any drawings. A clear scope helps avoid surprises and makes comparisons easier.
Ready to plan your extension?
Request a quote and we’ll confirm next steps, likely timeline ranges, and what information we need to price accurately.
Ready to plan your project? Request a quote with your postcode and goals.