Building regulations for home extensions
On this page
Thank you for contacting the RBKC Planning department.
You can search, view and comment on applications using the Planning Applications Search on the council's website. The service is updated regularly, and key milestones and target dates are shown under "Proposal Details".
If you have submitted an application that is still within its statutory determination period, or an agreed extension of time, a progress update may not yet be available. If you need to speak to the planning officer dealing with your application, you can email them directly. Their contact details can be found in:
- your planning application acknowledgement letter
- any emails or letters about your application
For more information about planning applications, planning guidance, planning enforcement and other planning services, visit planning and building control.
Planning advice for your business or property is also available through our pre-application advice.
What's in this guide
Our homeowner's guide to building regulations for home extensions covers:
- why it’s beneficial to use your council’s building control service
- what Building Regulations are and why they apply to your extension
- competent person schemes
- planning permissions and other approvals you need
- finding experts for your home extension
- building a new extension
- conversions
- alterations
- energy efficiency
Read our guide
Read our guide for home extensions.
Last updated: 4 February 2026