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Most Common Planning Applications in Northumberland

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Northumberland is 13.7% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

498 real decisions·7 project types·Updated September 2026
97.0%
Safest: Outbuilding
83.3%
Lowest: Change of Use (Residential)
13.7%
Spread
7
Types ranked

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All 7 project types ranked

#TypeDecisionsApprovedRefusedRate
1Outbuilding33321
97.0%
2Dormer20191
95.0%
3Rear Extension67616
91.0%
4Extension (General)67616
91.0%
5Garage / Parking11810315
87.3%
6Side Extension31274
87.1%
7Change of Use (Residential)36306
83.3%
See how this applies to your postcode →

These are council averages. Your property is specific.

A outbuilding application has a 97.0% approval rate. Change of Use (Residential)? Just 83.3%.
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What the data tells us

1
The range is massive: 83.3% to 97.0%. 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

47 planning applications in Northumberland 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 Northumberland planning data

Methodology: Classifies 498 decisions in Northumberland 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 Northumberland Council's public planning portal, January 2020 to September 2026. Full methodology →
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