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

Most Common Planning Applications in Norwich

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Norwich is 44.0% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

8,590 real decisions·16 project types·Updated August 2026
98.2%
Safest: Conservatory
54.2%
Lowest: HMO
44.0%
Spread
16
Types ranked

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All 16 project types ranked

#TypeDecisionsApprovedRefusedRate
1Conservatory1711683
98.2%
2Wraparound Extension1111074
96.4%
3Rear Extension1,4491,39158
96.0%
4Dormer2262179
96.0%
5Side Extension60157625
95.8%
6Front Extension1921848
95.8%
7Loft Conversion1451387
95.2%
8Outbuilding24122714
94.2%
9Annex50464
92.0%
10Extension (General)35632234
90.4%
11Garage / Parking75167477
89.7%
12Basement64568
87.5%
13Change of Use (Residential)57950475
87.0%
14New Build1007822
78.0%
15Flat Conversion32239
71.9%
16HMO482622
54.2%
See how this applies to your postcode →

These are council averages. Your property is specific.

A conservatory application has a 98.2% approval rate. HMO? Just 54.2%.
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What the data tells us

1
The range is massive: 54.2% to 98.2%. 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

627 planning applications in Norwich 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 Norwich planning data

Nearby councils project type rankings

Methodology: Classifies 8,590 decisions in Norwich 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 Norwich Council's public planning portal, January 2020 to August 2026. Full methodology →
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