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Most Common Planning Applications in Adur & Worthing

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

25,460 real decisions·17 project types·Updated September 2026
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Safest: Front Extension
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Lowest: Basement
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Spread
17
Types ranked

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All 17 project types ranked

#TypeDecisionsApprovedRefusedRate
1Front Extension623––
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2Garage / Parking4,882––
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3Side Extension2,947––
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4Annex352––
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5Rear Extension6,462––
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6Extension (General)3,420––
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7Change of Use (Residential)1,840––
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8Loft Conversion1,788––
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9Dormer3,951––
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10HMO165––
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11Outbuilding931––
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12Hip-to-Gable Conversion986––
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13Conservatory2,399––
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14New Build697––
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15Wraparound Extension487––
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16Flat Conversion403––
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17Basement217––
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See how this applies to your postcode →

These are council averages. Your property is specific.

A front extension application has a – approval rate. Basement? Just –.
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What the data tells us

1
The range is massive: – to –. 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

– planning applications in Adur & Worthing have been refused since 2020. Many of those homeowners had already paid for drawings and application fees. A free, property-specific report shows you what gets approved — and what gets refused — near your property.

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More Adur & Worthing planning data

Nearby councils project type rankings

Methodology: Classifies 25,460 decisions in Adur & Worthing 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 Adur & Worthing Council's public planning portal, January 2020 to September 2026. Full methodology →
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