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Most Common Planning Applications in East Cambridgeshire

Not all planning applications are created equal. The gap between the highest and lowest approval project type in East Cambridgeshire is 20.3% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

11,402 real decisions·13 project types·Updated August 2026
98.2%
Safest: Conservatory
77.9%
Lowest: New Build
20.3%
Spread
13
Types ranked

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All 13 project types ranked

#TypeDecisionsApprovedRefusedRate
1Conservatory2172134
98.2%
2Rear Extension1,3261,25175
94.3%
3Front Extension21619917
92.1%
4Side Extension64659551
92.1%
5Wraparound Extension98908
91.8%
6Extension (General)89080882
90.8%
7Dormer17015416
90.6%
8Outbuilding71163378
89.0%
9Loft Conversion20518124
88.3%
10Garage / Parking2,0541,788266
87.0%
11Annex19116328
85.3%
12Change of Use (Residential)58048199
82.9%
13New Build476371105
77.9%
See how this applies to your postcode →

These are council averages. Your property is specific.

A conservatory application has a 98.2% approval rate. New Build? Just 77.9%.
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What the data tells us

1
The range is massive: 77.9% 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

1,064 planning applications in East Cambridgeshire 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 East Cambridgeshire planning data

Nearby councils project type rankings

Methodology: Classifies 11,402 decisions in East Cambridgeshire 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 East Cambridgeshire Council's public planning portal, January 2020 to August 2026. Full methodology →
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