One of the first questions homeowners ask when planning an extension is whether planning permission is required. In Sevenoaks, the answer depends on your property type, location and the scale of your plans.
Permitted Development Explained
Many extensions fall under permitted development (PD), meaning formal planning permission isn’t required. Typical allowances include rear extensions up to 3m (terraced or semi-detached) or 4m (detached), height limits of 4m and the use of similar materials.
When Planning Permission Is Required
You will usually need planning permission if your home is in a conservation area, is listed, exceeds PD limits or involves a side or two-storey extension. Sevenoaks contains several conservation areas, so early checks are essential.
How Long Does Planning Permission Take?
Most householder applications are decided within eight weeks, although more complex applications may take longer.
Get Your Extension Right from the Start
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Sources
- UK Government – Planning permission guidance: https://www.gov.uk/planning-permission-england-wales
- Planning Portal – Extension advice: https://www.planningportal.co.uk
- Sevenoaks District Council – Planning services: https://www.sevenoaks.gov.uk