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Most Common Planning Applications in Dartford

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Dartford is 24.0% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

7,102 real decisions·17 project types·Updated March 2026
94.0%
Safest: Conservatory
70.0%
Lowest: Flat Conversion
24.0%
Spread
17
Types ranked

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All 17 project types ranked

#TypeDecisionsApprovedRefusedRate
1Conservatory33531520
94.0%
2Hip-to-Gable Conversion1131058
92.9%
3Wraparound Extension86797
91.9%
4Outbuilding46142041
91.1%
5Side Extension95886791
90.5%
6Extension (General)21719621
90.3%
7Rear Extension1,9441,733211
89.1%
8Dormer81872296
88.3%
9Garage / Parking1,7501,544206
88.2%
10Front Extension22719928
87.7%
11New Build67158289
86.7%
12Loft Conversion19516926
86.7%
13Annex978413
86.6%
14Basement917714
84.6%
15HMO584513
77.6%
16Change of Use (Residential)39730196
75.8%
17Flat Conversion30219
70.0%
See how this applies to your postcode →

These are council averages. Your property is specific.

A conservatory application has a 94.0% approval rate. Flat Conversion? Just 70.0%.
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What the data tells us

1
The range is massive: 70.0% to 94.0%. 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

839 planning applications in Dartford 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 Dartford planning data

Nearby councils project type rankings

Methodology: Classifies 7,102 decisions in Dartford 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 Dartford Council's public planning portal, January 2020 to present. Full methodology →
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