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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 12.1% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

5,935 real decisions·16 project types·Updated September 2026
95.3%
Safest: Conservatory
83.2%
Lowest: Annex
12.1%
Spread
16
Types ranked

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All 16 project types ranked

#TypeDecisionsApprovedRefusedRate
1Conservatory34332716
95.3%
2Rear Extension1,6501,536114
93.1%
3Flat Conversion27252
92.6%
4Wraparound Extension20118219
90.5%
5Side Extension97688195
90.3%
6Extension (General)57751463
89.1%
7Front Extension24421727
88.9%
8Change of Use (Residential)39234547
88.0%
9Loft Conversion31427440
87.3%
10Basement70619
87.1%
11Garage / Parking2,0901,810280
86.6%
12Hip-to-Gable Conversion56488
85.7%
13Outbuilding55047179
85.6%
14New Build44237666
85.1%
15Dormer48740978
84.0%
16Annex16113427
83.2%
See how this applies to your postcode →

These are council averages. Your property is specific.

A conservatory application has a 95.3% approval rate. Annex? Just 83.2%.
Check your postcode to see what actually happens near your address.

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What the data tells us

1
The range is massive: 83.2% to 95.3%. 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

552 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 5,935 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 September 2026. Full methodology →
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