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

Most Common Planning Applications in Three Rivers

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Three Rivers is 12.7% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

3,823 real decisions·14 project types·Updated August 2026
97.3%
Safest: Hip-to-Gable Conversion
84.6%
Lowest: New Build
12.7%
Spread
14
Types ranked

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All 14 project types ranked

#TypeDecisionsApprovedRefusedRate
1Hip-to-Gable Conversion75732
97.3%
2Wraparound Extension79763
96.2%
3Outbuilding16515411
93.3%
4Front Extension90846
93.3%
5Conservatory74695
93.2%
6Side Extension18817414
92.6%
7Loft Conversion20919316
92.3%
8Rear Extension68262953
92.2%
9Garage / Parking36133130
91.7%
10Extension (General)49445
89.8%
11Dormer25923128
89.2%
12Change of Use (Residential)26233
88.5%
13Basement27234
85.2%
14New Build26224
84.6%
See how this applies to your postcode →

These are council averages. Your property is specific.

A hip-to-gable conversion application has a 97.3% approval rate. New Build? Just 84.6%.
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What the data tells us

1
The range is massive: 84.6% to 97.3%. 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

298 planning applications in Three Rivers 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 Three Rivers planning data

Methodology: Classifies 3,823 decisions in Three Rivers 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 Three Rivers Council's public planning portal, January 2020 to August 2026. Full methodology →
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