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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 20.2% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

10,618 real decisions·17 project types·Updated March 2026
85.4%
Safest: Conservatory
65.2%
Lowest: Flat Conversion
20.2%
Spread
17
Types ranked

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All 17 project types ranked

#TypeDecisionsApprovedRefusedRate
1Conservatory30125744
85.4%
2Extension (General)28123645
84.0%
3Garage / Parking1,9591,583376
80.8%
4Hip-to-Gable Conversion40632383
79.6%
5Rear Extension3,5182,742776
77.9%
6Outbuilding688531157
77.2%
7Loft Conversion1,266974292
76.9%
8Basement34268
76.5%
9Side Extension1,5131,154359
76.3%
10Dormer1,3571,032325
76.1%
11Front Extension39129794
76.0%
12Annex17513243
75.4%
13Wraparound Extension30422381
73.4%
14New Build392287105
73.2%
15Change of Use (Residential)589424165
72.0%
16HMO684721
69.1%
17Flat Conversion694524
65.2%
See how this applies to your postcode →

These are council averages. Your property is specific.

A conservatory application has a 85.4% approval rate. Flat Conversion? Just 65.2%.
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What the data tells us

1
The range is massive: 65.2% to 85.4%. 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

2,119 planning applications in Thurrock 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 Thurrock planning data

Nearby councils project type rankings

Methodology: Classifies 10,618 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 present. Full methodology →
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