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

Most Common Planning Applications in Swindon

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Swindon is 6.7% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

4,549 real decisions·13 project types·Updated August 2026
97.0%
Safest: Wraparound Extension
90.3%
Lowest: Front Extension
6.7%
Spread
13
Types ranked

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All 13 project types ranked

#TypeDecisionsApprovedRefusedRate
1Wraparound Extension67652
97.0%
2Conservatory2342259
96.2%
3Outbuilding84804
95.2%
4Rear Extension1,2421,16676
93.9%
5Extension (General)1301228
93.8%
6Side Extension51047733
93.5%
7Garage / Parking43440430
93.1%
8Loft Conversion41383
92.7%
9Annex22202
90.9%
10Change of Use (Residential)14913514
90.6%
11Dormer18516718
90.3%
12New Build25823325
90.3%
13Front Extension12411212
90.3%
See how this applies to your postcode →

These are council averages. Your property is specific.

A wraparound extension application has a 97.0% approval rate. Front Extension? Just 90.3%.
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What the data tells us

1
The range is massive: 90.3% 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

229 planning applications in Swindon 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 Swindon planning data

Methodology: Classifies 4,549 decisions in Swindon 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 Swindon Council's public planning portal, January 2020 to August 2026. Full methodology →
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