Thinking of extending your Sevenoaks home? Before you start dreaming about that new kitchen extension or loft conversion, you'll need to understand the planning permission landscape.
What is Planning Permission?
Planning permission is formal approval from your local council (Sevenoaks District Council) to carry out building work or change how a property is used. It ensures that developments are appropriate for their surroundings and meet local planning policies.
Do You Need Planning Permission?
Not all home improvements require planning permission. Many fall under Permitted Development Rights (PDR), which allow certain types of work without a formal application.
Work That Usually Doesn't Need Permission
- Single-storey rear extensions up to 4m (detached) or 3m (attached)
- Loft conversions up to 40m³ (terraced) or 50m³ (detached/semi)
- Porches under 3m² with height under 3m
- Internal alterations
- Garden buildings under 2.5m height near boundaries
Work That Usually Needs Permission
- Extensions exceeding PDR limits
- Building in front of your property
- Work on listed buildings
- Properties in Conservation Areas (parts of Sevenoaks town centre)
- Flats and maisonettes
The Application Process
Step 1: Pre-Application Advice
Sevenoaks District Council offers a pre-application advice service. For £150-£300, you can get an informal opinion on whether your proposal is likely to be approved. This is highly recommended for anything beyond straightforward applications.
Step 2: Prepare Your Application
You'll need:
- Completed application forms
- Location plan (1:1250 scale)
- Site plan (1:500 scale)
- Existing and proposed floor plans
- Existing and proposed elevations
- Design and Access Statement (for larger projects)
Step 3: Submit and Pay
Applications can be submitted via the Planning Portal. Current fees (2025):
- Householder applications: £258
- Full planning permission: varies by project
Step 4: Determination Period
Most householder applications are decided within 8 weeks. More complex applications may take 13 weeks.
Conservation Areas in Sevenoaks
Sevenoaks has several Conservation Areas where additional restrictions apply:
- Sevenoaks Town Centre
- Riverhead
- Seal
- Kemsing
In these areas, you may need permission for work that would otherwise be permitted development, including:
- Cladding
- Satellite dishes on front elevations
- Demolition
Tips for a Successful Application
- Talk to your neighbours before submitting
- Use appropriate materials that match the local character
- Consider the street scene - how will it look from the road?
- Don't overlook neighbours - avoid windows that look directly into their property
- Work with a local architect who understands Sevenoaks planning policies
What If Your Application Is Refused?
You have three options:
- Resubmit with modifications addressing the concerns
- Appeal to the Planning Inspectorate (within 6 months)
- Negotiate with the planning officer on acceptable changes
Conclusion
Navigating planning permission doesn't have to be overwhelming. Start early, do your research, and don't hesitate to seek professional advice. The investment in proper planning will save you time, money, and stress in the long run.