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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 9.1% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

4,509 real decisions·14 project types·Updated September 2026
99.4%
Safest: Wraparound Extension
90.3%
Lowest: Change of Use (Residential)
9.1%
Spread
14
Types ranked

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All 14 project types ranked

#TypeDecisionsApprovedRefusedRate
1Wraparound Extension3593572
99.4%
2Front Extension3012974
98.7%
3Outbuilding1671634
97.6%
4Conservatory1611574
97.5%
5Rear Extension1,4501,41238
97.4%
6Side Extension1,1201,09030
97.3%
7Hip-to-Gable Conversion31301
96.8%
8Annex29281
96.6%
9Garage / Parking73870830
95.9%
10Extension (General)27526213
95.3%
11Dormer17216012
93.0%
12Loft Conversion82766
92.7%
13New Build66060654
91.8%
14Change of Use (Residential)24722324
90.3%
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 90.3%.
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What the data tells us

1
The range is massive: 90.3% 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

249 planning applications in Knowsley 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 Knowsley planning data

Nearby councils project type rankings

Methodology: Classifies 4,509 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 September 2026. Full methodology →
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