Planning permission Sussex projects require a clear understanding of local authority policies, design constraints and approval processes. Whether you are planning a house extension, internal reconfiguration, load-bearing wall removal or residential development, early architectural guidance can significantly improve your chances of approval.
At Studio Ninety-Three, we provide expert support for planning permission in Sussex, preparing and submitting applications that align with local planning policies across West and East Sussex.
When Is Planning Permission Required in Sussex for Residential Projects?
Not all residential projects require full planning permission. Some extensions and alterations fall under permitted development rights, while others require a formal planning application depending on size, height, proximity to boundaries and property classification.
We assess your property against local authority guidelines in Sussex to determine whether your proposal can proceed under permitted development or requires full planning approval.
Common Planning Permission Challenges in Sussex
Planning permission house extensions in SussexSussex applications can be refused for several reasons, including design issues, overlooking neighbouring properties, scale of development or conflict with local planning policies.
Working with an architect early in the process helps identify potential issues and refine the design before submission, reducing the risk of delays or refusal.
Types of Planning Permission Applications in Sussex
Residential projects in Sussex may require different types of applications depending on the scope of work and local authority requirements.
- Householder Planning Applications
- Full Planning Applications
- Permitted Development Assessments
- Lawful Development Certificates
- Listed Building Consent (where applicable)
Our Planning Application Process
We follow a structured approach to ensure a smooth and efficient planning submission process.
- Initial Consultation & Site Review
- Planning Policy Assessment
- Preparation of Architectural Drawings
- Coordination of Supporting Documents
- Submission to Local Authority
- Ongoing Communication During Determination Period
Local Planning Authorities in Sussex
Planning applications in Sussex are reviewed by the relevant local authority depending on the location of the property. Each authority has its own policies, validation requirements and design considerations.
- West Sussex County Council
- East Sussex County Council
- Brighton & Hove City Council
- Crawley Borough Council
- Horsham District Council
- Lewes District Council
Frequently Asked Questions About Planning Permission in Sussex
How long does planning permission take in Sussex?
Most householder planning applications are determined within approximately 8 weeks, although timelines may vary depending on complexity and local authority workload.
What is permitted development?
Permitted development rights allow certain types of residential development without requiring full planning permission, provided specific size and design criteria are met.
Can planning permission be refused?
Yes. Applications may be refused if they conflict with local planning policies, impact neighbouring properties or fail to meet design guidelines.
Do you handle the full planning submission?
Yes. We prepare drawings, coordinate documentation and submit the application on your behalf, managing communication with the local authority throughout the process.
Need Support with Planning Permission in Sussex?
For official planning guidance and application requirements, visit the Planning Portal.
Book a consultation to discuss your proposed project and receive clear guidance on planning requirements, documentation and next steps.