Data-backed planning intelligence · 3,780,000+ decisions analysed across England

Most Common Planning Applications in Thurrock

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Thurrock is 19.3% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

11,188 real decisions·17 project types·Updated August 2026
86.0%
Safest: Conservatory
66.7%
Lowest: Flat Conversion
19.3%
Spread
17
Types ranked

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All 17 project types ranked

#TypeDecisionsApprovedRefusedRate
1Conservatory31427044
86.0%
2Extension (General)30526045
85.2%
3Garage / Parking2,0791,703376
81.9%
4Hip-to-Gable Conversion42334083
80.4%
5Rear Extension3,6782,902776
78.9%
6Outbuilding728571157
78.4%
7Loft Conversion1,3331,041292
78.1%
8Dormer1,4181,093325
77.1%
9Front Extension41031694
77.1%
10Side Extension1,5531,194359
76.9%
11Annex18614343
76.9%
12Basement34268
76.5%
13New Build419314105
74.9%
14Change of Use (Residential)640474166
74.1%
15Wraparound Extension31223181
74.0%
16HMO755421
72.0%
17Flat Conversion724824
66.7%
See how this applies to your postcode →

These are council averages. Your property is specific.

A conservatory application has a 86.0% approval rate. Flat Conversion? Just 66.7%.
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What the data tells us

1
The range is massive: 66.7% to 86.0%. 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

2,121 planning applications in Thurrock 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 Thurrock planning data

Nearby councils project type rankings

Methodology: Classifies 11,188 decisions in Thurrock 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 Thurrock Council's public planning portal, January 2020 to August 2026. Full methodology →
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