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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 28.0% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

35,644 real decisions·17 project types·Updated August 2026
93.8%
Safest: Conservatory
65.8%
Lowest: New Build
28.0%
Spread
17
Types ranked

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All 17 project types ranked

#TypeDecisionsApprovedRefusedRate
1Conservatory2,3892,241148
93.8%
2Rear Extension6,4345,991443
93.1%
3Hip-to-Gable Conversion97891167
93.1%
4Outbuilding92783889
90.4%
5Wraparound Extension48643848
90.1%
6Side Extension2,9332,626307
89.5%
7Front Extension62155269
88.9%
8Extension (General)3,4092,983426
87.5%
9Loft Conversion1,7751,551224
87.4%
10Dormer3,9263,402524
86.7%
11HMO16314122
86.5%
12Change of Use (Residential)1,8351,577258
85.9%
13Annex35130051
85.5%
14Garage / Parking4,8584,090768
84.2%
15Basement21517738
82.3%
16Flat Conversion40232280
80.1%
17New Build696458238
65.8%
See how this applies to your postcode →

These are council averages. Your property is specific.

A conservatory application has a 93.8% approval rate. New Build? Just 65.8%.
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What the data tells us

1
The range is massive: 65.8% to 93.8%. 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

3,775 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 35,644 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 August 2026. Full methodology →
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