Data-backed planning intelligence · 3,290,000+ decisions analysed across England

Most Common Planning Applications in Middlesbrough

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Middlesbrough is 18.5% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

18,723 real decisions·15 project types·Updated June 2026
97.4%
Safest: Conservatory
78.9%
Lowest: HMO
18.5%
Spread
15
Types ranked

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All 15 project types ranked

#TypeDecisionsApprovedRefusedRate
1Conservatory1,7231,67845
97.4%
2Extension (General)6,0515,613438
92.8%
3Outbuilding26424420
92.4%
4Garage / Parking2,5182,292226
91.0%
5Loft Conversion83758
90.4%
6Rear Extension54549253
90.3%
7Side Extension37333439
89.5%
8Change of Use (Residential)1,3491,161188
86.1%
9New Build729621108
85.2%
10Front Extension59509
84.7%
11Wraparound Extension25214
84.0%
12Dormer666558108
83.8%
13Flat Conversion18215131
83.0%
14Annex594712
79.7%
15HMO14211230
78.9%
See how this applies to your postcode →

These are council averages. Your property is specific.

A conservatory application has a 97.4% approval rate. HMO? Just 78.9%.
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: 78.9% to 97.4%. 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

1,444 planning applications in Middlesbrough 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 Middlesbrough planning data

Nearby councils project type rankings

Methodology: Classifies 18,723 decisions in Middlesbrough 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 Middlesbrough Council's public planning portal, January 2020 to present. Full methodology →
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