Data-backed planning intelligence · 3,770,000+ decisions analysed across England

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 16.2% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

6,943 real decisions·15 project types·Updated August 2026
98.0%
Safest: Conservatory
81.8%
Lowest: New Build
16.2%
Spread
15
Types ranked

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All 15 project types ranked

#TypeDecisionsApprovedRefusedRate
1Conservatory2462415
98.0%
2Rear Extension94492024
97.5%
3Side Extension55854216
97.1%
4Wraparound Extension87843
96.6%
5Front Extension1421375
96.5%
6Hip-to-Gable Conversion28271
96.4%
7Dormer34833315
95.7%
8Extension (General)49146823
95.3%
9Loft Conversion23222111
95.3%
10Garage / Parking1,0601,00357
94.6%
11Basement44413
93.2%
12Annex98917
92.9%
13Outbuilding38535728
92.7%
14Change of Use (Residential)25622630
88.3%
15New Build16513530
81.8%
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 81.8%.
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What the data tells us

1
The range is massive: 81.8% 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

352 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 6,943 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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