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Most Common Planning Applications in Sevenoaks

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Sevenoaks is 18.2% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

12,687 real decisions·16 project types·Updated March 2026
90.0%
Safest: Conservatory
71.8%
Lowest: New Build
18.2%
Spread
16
Types ranked

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All 16 project types ranked

#TypeDecisionsApprovedRefusedRate
1Conservatory41237141
90.0%
2Wraparound Extension16815018
89.3%
3Front Extension23721027
88.6%
4Rear Extension1,7351,522213
87.7%
5Side Extension958835123
87.2%
6Extension (General)639535104
83.7%
7Outbuilding851702149
82.5%
8Basement907416
82.2%
9Dormer752616136
81.9%
10Loft Conversion47839187
81.8%
11Garage / Parking1,8611,518343
81.6%
12Hip-to-Gable Conversion725814
80.6%
13Change of Use (Residential)34325489
74.1%
14Annex15211240
73.7%
15Flat Conversion413011
73.2%
16New Build458329129
71.8%
See how this applies to your postcode →

These are council averages. Your property is specific.

A conservatory application has a 90.0% approval rate. New Build? Just 71.8%.
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What the data tells us

1
The range is massive: 71.8% to 90.0%. 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

1,679 planning applications in Sevenoaks 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 Sevenoaks planning data

Nearby councils project type rankings

Methodology: Classifies 12,687 decisions in Sevenoaks 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 Sevenoaks Council's public planning portal, January 2020 to present. Full methodology →
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