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Most Common Planning Applications in Stockton-on-Tees

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Stockton-on-Tees is 16.8% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

2,614 real decisions·13 project types·Updated August 2026
100.0%
Safest: Front Extension
83.2%
Lowest: Change of Use (Residential)
16.8%
Spread
13
Types ranked

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All 13 project types ranked

#TypeDecisionsApprovedRefusedRate
1Front Extension20200
100.0%
2Wraparound Extension27270
100.0%
3Conservatory1051041
99.0%
4Rear Extension3993945
98.7%
5Side Extension1621593
98.1%
6Garage / Parking46144615
96.7%
7Outbuilding64613
95.3%
8Extension (General)30929415
95.1%
9Dormer81765
93.8%
10Annex23212
91.3%
11New Build27124031
88.6%
12Loft Conversion24213
87.5%
13Change of Use (Residential)16713928
83.2%
See how this applies to your postcode →

These are council averages. Your property is specific.

A front extension application has a 100.0% approval rate. Change of Use (Residential)? Just 83.2%.
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What the data tells us

1
The range is massive: 83.2% to 100.0%. 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

127 planning applications in Stockton-on-Tees 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 Stockton-on-Tees planning data

Nearby councils project type rankings

Methodology: Classifies 2,614 decisions in Stockton-on-Tees 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 Stockton-on-Tees Council's public planning portal, January 2020 to August 2026. Full methodology →
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