Data-backed planning intelligence · 2,500,000+ decisions analysed across England

Most Common Planning Applications in Arun

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Arun is 11.2% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

2,451 real decisions·9 project types·Updated March 2026
100.0%
Safest: Conservatory
88.8%
Lowest: Garage / Parking
11.2%
Spread
9
Types ranked

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All 9 project types ranked

#TypeDecisionsApprovedRefusedRate
1Conservatory63630
100.0%
2Front Extension42420
100.0%
3Rear Extension1901864
97.9%
4Side Extension91883
96.7%
5Loft Conversion43412
95.3%
6Extension (General)74695
93.2%
7Dormer90837
92.2%
8Outbuilding47434
91.5%
9Garage / Parking18716621
88.8%
See how this applies to your postcode →

These are council averages. Your property is specific.

A conservatory application has a 100.0% approval rate. Garage / Parking? Just 88.8%.
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What the data tells us

1
The range is massive: 88.8% to 100.0%. Choosing the right project type — or framing your application correctly — can dramatically affect outcomes.
2
Visibility drives scrutiny. Project types that change the external appearance — dormers, loft conversions, hip-to-gable — face more resistance than those that don't. The more visible your proposal, the more carefully it needs designing.
3
These are council-wide averages. Your ward, your street and your immediate neighbours all shift the odds. The comparable decisions near your property are the best indicator of outcome.

Before you spend £5,000+ on architects and drawings

154 planning applications in Arun have been refused since 2020. Many of those homeowners had already paid for drawings and application fees. A £79 report shows you what gets approved — and what gets refused — near your property.

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More Arun planning data

Methodology: Classifies 2,451 decisions in Arun into residential project types using keyword matching against proposal descriptions (matching generate_site_data.py subtype rules). A single application may appear in multiple categories. Data from Arun Council's public planning portal, January 2020 to present. Full methodology →
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