Data-backed planning intelligence · 3,780,000+ decisions analysed across England

Most Common Planning Applications in Halton

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Halton is 11.1% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

2,278 real decisions·12 project types·Updated August 2026
100.0%
Safest: Wraparound Extension
88.9%
Lowest: Change of Use (Residential)
11.1%
Spread
12
Types ranked

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All 12 project types ranked

#TypeDecisionsApprovedRefusedRate
1Wraparound Extension60600
100.0%
2Outbuilding54540
100.0%
3Conservatory92911
98.9%
4Rear Extension61960811
98.2%
5Side Extension38837711
97.2%
6Garage / Parking37836711
97.1%
7Front Extension66642
97.0%
8Extension (General)1751687
96.0%
9Dormer63603
95.2%
10Loft Conversion50473
94.0%
11New Build79727
91.1%
12Change of Use (Residential)16214418
88.9%
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. Change of Use (Residential)? Just 88.9%.
Check your postcode to see what actually happens near your address.

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What the data tells us

1
The range is massive: 88.9% 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

81 planning applications in Halton 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 Halton planning data

Methodology: Classifies 2,278 decisions in Halton 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 Halton Council's public planning portal, January 2020 to August 2026. Full methodology →
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