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Most Common Planning Applications in Kingston

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Kingston is 17.4% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

24,477 real decisions·17 project types·Updated June 2026
81.2%
Safest: Basement
63.8%
Lowest: Flat Conversion
17.4%
Spread
17
Types ranked

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All 17 project types ranked

#TypeDecisionsApprovedRefusedRate
1Basement751610141
81.2%
2Conservatory865697168
80.6%
3Wraparound Extension782630152
80.6%
4Extension (General)853687166
80.5%
5Garage / Parking4,7673,7491,018
78.6%
6Outbuilding1,229952277
77.5%
7Side Extension3,5062,704802
77.1%
8New Build2,8242,177647
77.1%
9Hip-to-Gable Conversion1,8391,414425
76.9%
10Annex14411034
76.4%
11Dormer3,9172,986931
76.2%
12Change of Use (Residential)1,4241,085339
76.2%
13Rear Extension7,5595,7111,848
75.6%
14Loft Conversion4,0653,0651,000
75.4%
15Front Extension774582192
75.2%
16HMO15911643
73.0%
17Flat Conversion409261148
63.8%
See how this applies to your postcode →

These are council averages. Your property is specific.

A basement application has a 81.2% approval rate. Flat Conversion? Just 63.8%.
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What the data tells us

1
The range is massive: 63.8% to 81.2%. 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

4,838 planning applications in Kingston 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 Kingston planning data

Nearby councils project type rankings

Methodology: Classifies 24,477 decisions in Kingston 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 Kingston Council's public planning portal, January 2020 to present. Full methodology →
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