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Home Extension Advice
Do I Need Planning Permission for an Extension?
It's the question we hear most, and the honest answer is: it depends. Many extensions can go ahead under Permitted Development rights without a full planning application, but those rights have strict limits on size, height, materials, and position.
The Most Common Traps to Watch For
- ⚠️ Your rights may have been removed: Conservation Areas, Article 4 Directions, and Listed Buildings alter the rules dramatically. Furthermore, flats and maisonettes do not enjoy the same permitted development rights as single-family houses.
- ⚠️ Earlier work counts against your allowance: Previous extensions—including any built by former owners of your property—count towards your permitted development capacity.
- ⚠️ Restrictive planning conditions: The original planning consent for your housing estate or property may have had conditions attached that explicitly removed permitted development rights.
- ⚠️ Building Regulations are separate: Your build can be completely exempt from planning permission while still legally requiring separate Building Regulations approval.
📜 Protecting Value with a Lawful Development Certificate
If you are relying on permitted development, applying for a Lawful Development Certificate (LDC) gives you formal, legally binding written confirmation from the council that your plans are lawful. While optional, an LDC is incredibly valuable when you come to sell your house or re-mortgage.
Not sure where you stand with your plans?
Kippen Ash can look at your property and your plans, telling you clearly whether you need to apply before you spend money on architectural drawings or builders.
Email enquiries@kippenash.co.uk
Please note: Planning rules are detailed and subject to change; always check the current position before starting work. This article provides general guidance for properties in England only and is correct to the best of our knowledge at the point of publication. It does not constitute formal legal or planning advice for your specific project, and Kippen Ash accepts no liability for decisions made in reliance upon it.