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

Most Common Planning Applications in North Somerset

Not all planning applications are created equal. The gap between the highest and lowest approval project type in North Somerset is 24.8% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

19,330 real decisions·17 project types·Updated March 2026
96.0%
Safest: Wraparound Extension
71.2%
Lowest: HMO
24.8%
Spread
17
Types ranked

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All 17 project types ranked

#TypeDecisionsApprovedRefusedRate
1Wraparound Extension2262179
96.0%
2Rear Extension3,1462,981165
94.8%
3Conservatory91486351
94.4%
4Side Extension2,0711,934137
93.4%
5Front Extension55751146
91.7%
6Extension (General)1,3881,268120
91.4%
7Dormer1,069968101
90.6%
8Loft Conversion60654858
90.4%
9Hip-to-Gable Conversion56506
89.3%
10Outbuilding91381598
89.3%
11Garage / Parking3,4303,048382
88.9%
12Basement14312716
88.8%
13Annex35130249
86.0%
14Flat Conversion827012
85.4%
15New Build1,4171,148269
81.0%
16Change of Use (Residential)1,172934238
79.7%
17HMO664719
71.2%
See how this applies to your postcode →

These are council averages. Your property is specific.

A wraparound extension application has a 96.0% approval rate. HMO? Just 71.2%.
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: 71.2% to 96.0%. 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

1,899 planning applications in North Somerset 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 North Somerset planning data

Nearby councils project type rankings

Methodology: Classifies 19,330 decisions in North Somerset 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 North Somerset Council's public planning portal, January 2020 to present. Full methodology →
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