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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 20.4% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

10,928 real decisions·13 project types·Updated March 2026
98.1%
Safest: Conservatory
77.7%
Lowest: New Build
20.4%
Spread
13
Types ranked

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All 13 project types ranked

#TypeDecisionsApprovedRefusedRate
1Conservatory2062024
98.1%
2Rear Extension1,2881,21375
94.2%
3Front Extension21119417
91.9%
4Side Extension62657551
91.9%
5Wraparound Extension96888
91.7%
6Extension (General)85577679
90.8%
7Dormer16314716
90.2%
8Outbuilding68060377
88.7%
9Loft Conversion19717324
87.8%
10Garage / Parking1,9801,716264
86.7%
11Annex18315627
85.2%
12Change of Use (Residential)54945297
82.3%
13New Build458356102
77.7%
See how this applies to your postcode →

These are council averages. Your property is specific.

A conservatory application has a 98.1% approval rate. New Build? Just 77.7%.
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What the data tells us

1
The range is massive: 77.7% to 98.1%. 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

1,043 planning applications in East Cambridgeshire 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 East Cambridgeshire planning data

Nearby councils project type rankings

Methodology: Classifies 10,928 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 present. Full methodology →
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