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Most Common Planning Applications in Winchester

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Winchester is 15.9% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

7,039 real decisions·15 project types·Updated August 2026
98.0%
Safest: Conservatory
82.1%
Lowest: New Build
15.9%
Spread
15
Types ranked

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All 15 project types ranked

#TypeDecisionsApprovedRefusedRate
1Conservatory2502455
98.0%
2Rear Extension95893325
97.4%
3Side Extension56154516
97.1%
4Hip-to-Gable Conversion31301
96.8%
5Wraparound Extension88853
96.6%
6Front Extension1451405
96.6%
7Dormer35133615
95.7%
8Extension (General)49146823
95.3%
9Loft Conversion23922712
95.0%
10Garage / Parking1,0761,01858
94.6%
11Basement44413
93.2%
12Outbuilding39236428
92.9%
13Annex98917
92.9%
14Change of Use (Residential)26123031
88.1%
15New Build16813830
82.1%
See how this applies to your postcode →

These are council averages. Your property is specific.

A conservatory application has a 98.0% approval rate. New Build? Just 82.1%.
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What the data tells us

1
The range is massive: 82.1% to 98.0%. 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

356 planning applications in Winchester 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 Winchester planning data

Nearby councils project type rankings

Methodology: Classifies 7,039 decisions in Winchester 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 Winchester Council's public planning portal, January 2020 to August 2026. Full methodology →
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