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Most Common Planning Applications in Tonbridge & Malling

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Tonbridge & Malling is 15.1% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

7,950 real decisions·16 project types·Updated May 2026
95.4%
Safest: Conservatory
80.3%
Lowest: Annex
15.1%
Spread
16
Types ranked

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All 16 project types ranked

#TypeDecisionsApprovedRefusedRate
1Conservatory30629214
95.4%
2Rear Extension1,5021,395107
92.9%
3Flat Conversion21192
90.5%
4Wraparound Extension18216418
90.1%
5Side Extension87078288
89.9%
6Extension (General)52546659
88.8%
7Front Extension22019426
88.2%
8Change of Use (Residential)33429440
88.0%
9Loft Conversion29525837
87.5%
10Basement64559
85.9%
11Garage / Parking1,8681,598270
85.5%
12Outbuilding50543075
85.1%
13Hip-to-Gable Conversion53458
84.9%
14New Build39133061
84.4%
15Dormer44837573
83.7%
16Annex13711027
80.3%
See how this applies to your postcode →

These are council averages. Your property is specific.

A conservatory application has a 95.4% approval rate. Annex? Just 80.3%.
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What the data tells us

1
The range is massive: 80.3% to 95.4%. 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

790 planning applications in Tonbridge & Malling 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 Tonbridge & Malling planning data

Nearby councils project type rankings

Methodology: Classifies 7,950 decisions in Tonbridge & Malling 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 Tonbridge & Malling Council's public planning portal, January 2020 to present. Full methodology →
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