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

Most Common Planning Applications in Knowsley

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Knowsley is 9.7% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

4,280 real decisions·14 project types·Updated March 2026
99.4%
Safest: Wraparound Extension
89.7%
Lowest: Change of Use (Residential)
9.7%
Spread
14
Types ranked

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All 14 project types ranked

#TypeDecisionsApprovedRefusedRate
1Wraparound Extension3463442
99.4%
2Front Extension2792754
98.6%
3Outbuilding1601573
98.1%
4Conservatory1561524
97.4%
5Rear Extension1,3851,34837
97.3%
6Side Extension1,0821,05230
97.2%
7Annex28271
96.4%
8Hip-to-Gable Conversion26251
96.2%
9Garage / Parking69266428
96.0%
10Extension (General)26825513
95.1%
11Dormer16014812
92.5%
12Loft Conversion76706
92.1%
13New Build63158150
92.1%
14Change of Use (Residential)23220824
89.7%
See how this applies to your postcode →

These are council averages. Your property is specific.

A wraparound extension application has a 99.4% approval rate. Change of Use (Residential)? Just 89.7%.
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What the data tells us

1
The range is massive: 89.7% to 99.4%. 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

236 planning applications in Knowsley 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 Knowsley planning data

Nearby councils project type rankings

Methodology: Classifies 4,280 decisions in Knowsley 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 Knowsley Council's public planning portal, January 2020 to present. Full methodology →
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