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

Most Common Planning Applications in Chorley

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Chorley is 12.3% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

3,509 real decisions·11 project types·Updated March 2026
100.0%
Safest: Wraparound Extension
87.7%
Lowest: New Build
12.3%
Spread
11
Types ranked

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All 11 project types ranked

#TypeDecisionsApprovedRefusedRate
1Wraparound Extension28280
100.0%
2Extension (General)20419212
94.1%
3Conservatory29928118
94.0%
4Dormer1261179
92.9%
5Rear Extension85679363
92.6%
6Side Extension32830325
92.4%
7Change of Use (Residential)97889
90.7%
8Garage / Parking39735938
90.4%
9Front Extension67607
89.6%
10Outbuilding1049212
88.5%
11New Build21919227
87.7%
See how this applies to your postcode →

These are council averages. Your property is specific.

A wraparound extension application has a 100.0% approval rate. New Build? Just 87.7%.
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What the data tells us

1
The range is massive: 87.7% 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

238 planning applications in Chorley 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 Chorley planning data

Methodology: Classifies 3,509 decisions in Chorley 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 Chorley Council's public planning portal, January 2020 to present. Full methodology →
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