Understanding Your Planning Options

Permitted Development vs. Full Planning Application

When planning a home renovation or extension, it’s crucial to understand the two main routes for gaining approval. To help you understand, here are some of the key differences between going for a Permitted Development (PD) application and a Full Planning Application.

Detailed Comparison

Feature Permitted Development (PD) Full Planning Application
Permission Type
You are not applying for permission in the traditional sense. PD rights are granted by law, allowing certain developments without full council approval. A formal request for planning permission that goes through a full council assessment and decision-making process.
Scope of Work
Only certain work is allowed (e.g., small rear extensions, loft conversions) and must meet strict limits on size, height, and materials. More flexibility in design, size, and use. Suitable for larger or more complex projects that fall outside PD rights.
Timeframe
Usually faster, taking around 6-8 weeks for a decision on prior approval. Typically takes 8-10 weeks, or up to 13 weeks for larger or more complex projects.
Documentation
Generally requires less documentation. A Lawful Development Certificate or prior approval may be needed to confirm compliance. Requires detailed plans, design and access statements, planning justification, and sometimes specialist reports (e.g., flood risk).
Risk & Discretion
Less risk. The council has little discretion if the project meets all PD rules. Assessed against local planning policy, neighbour objections, and officer judgement. More discretion and risk involved.
Council Fees
Lower Council fees for a Lawful Development Certificate or Prior Approval. Higher council application fees due to the greater scope and work involved in the assessment.

Which Route is Right for You?

Choose Permitted Development if: Your project is straightforward and fits neatly within the specific rules and limitations set out in planning law. This is often the faster and more certain route for common home improvements.

Choose a Full Planning Application if: Your vision is more ambitious, involves a larger extension, or doesn’t meet the strict PD criteria. This path provides the flexibility to create a bespoke design, though it requires a more detailed submission and a longer wait for a decision.