Mid Sussex

South East·E07000228·Data: 2025 Q1-Q4
62

Average

Performance rating out of 100, based on approval rate, decision speed and appeal outcomes

Mid Sussex is a planning authority in the South East of England that covers a mix of urban and rural areas. The authority takes a generally supportive approach to householder applications, with a strong approval rate that should give you confidence when planning improvements to your home. One thing worth knowing is that while most applications do get approved, the speed of decisions can vary, so it's worth planning ahead.

Approval Rate

93%

of householder applications approved

Decided Within 8 Weeks

68%

meet the statutory target

Appeal Overturn Rate

37%

of refusals overturned on appeal

What to Expect

When you submit a planning application to Mid Sussex, you can expect a positive outcome in most cases, with 93% of householder applications being approved. However, you should be prepared for the decision to take a little longer than the standard 8 weeks, as only 68% of applications are decided within this timeframe. Many applications do get decided quickly, but some may take a few weeks longer, so build extra time into your project plans. The good news is that the authority is generally supportive of well thought out proposals from homeowners.

Local Planning Considerations

Mid Sussex covers areas with varying planning sensitivities, so before you apply, check whether your property is in a conservation area, as these have stricter rules about changes to the outside of buildings. You should also be aware of whether you're in the Green Belt, where certain types of development are more restricted. Taking five minutes to check these designations on the council's website could save you time and help you prepare a stronger application.

Tips for Homeowners

Start by visiting Mid Sussex's planning portal to check if your property has any special designations like conservation area status or Green Belt restrictions, as this will shape what you can do. When you prepare your application, include clear drawings and photos that show exactly what you're proposing and how it fits with your property and the local area, as this helps the planning officers process your application smoothly. Consider submitting your application early in the week and aim to be as detailed as possible in your supporting information, because clear applications tend to be decided faster. Finally, don't worry too much if you're initially refused, as appeals have a reasonable success rate here at 37%, but doing it right the first time is always better.

About the performance rating: The score out of 100 is calculated from three factors: householder application approval rate (up to 40 points), the percentage of decisions made within the 8-week statutory target (up to 30 points), and the appeal overturn rate, where a lower rate means the authority makes sound decisions that hold up on appeal (up to 20 points). A further 10 points are available for data completeness. Source: MHCLG PS2 planning statistics and Planning Inspectorate appeal decisions, 2025 Q1-Q4.

Does your project need planning permission?

Get an instant answer tailored to your address and project type.

Assess My Project