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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 11.8% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

3,012 real decisions·10 project types·Updated March 2026
100.0%
Safest: Hip-to-Gable Conversion
88.2%
Lowest: Extension (General)
11.8%
Spread
10
Types ranked

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All 10 project types ranked

#TypeDecisionsApprovedRefusedRate
1Hip-to-Gable Conversion48480
100.0%
2Loft Conversion1051032
98.1%
3Conservatory26251
96.2%
4Front Extension26251
96.2%
5Garage / Parking18017010
94.4%
6Outbuilding84795
94.0%
7Dormer1401319
93.6%
8Side Extension56524
92.9%
9Rear Extension44040733
92.5%
10Extension (General)34304
88.2%
See how this applies to your postcode →

These are council averages. Your property is specific.

A hip-to-gable conversion application has a 100.0% approval rate. Extension (General)? Just 88.2%.
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What the data tells us

1
The range is massive: 88.2% to 100.0%. 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

211 planning applications in Three Rivers 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 Three Rivers planning data

Methodology: Classifies 3,012 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 present. Full methodology →
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