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Loft Conversion Approval Rates in Canterbury

Loft conversions change your roofline — and that makes them one of the more closely scrutinised application types. Councils scrutinise visibility, overlooking and street character more closely than for ground-level work. Here's what the data shows in Canterbury.

227 real decisions·January 2020 to present·Updated May 2026
91.2%
Approval Rate
227
Decisions
207
Approved
20
Refused
91.2% approved. But 20 refused since 2020. Each refusal cost the homeowner time and money on drawings and application fees. Understanding your local data before you apply is the difference between confidence and a costly gamble.

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Why loft conversion approval rates matter

Loft conversions face more scrutiny than rear or side extensions because they change the property's profile from the street. Dormers, mansards and hip-to-gable alterations are particularly sensitive.

These are council averages. Your property is specific.

Two houses on the same street can get different outcomes.
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How loft conversions compare to other project types

Not all applications are treated equally. Here's how loft conversions stack up against other common projects in Canterbury.

TypeDecisionsRate
Wraparound Extension235
98.3%
Conservatory415
98.3%
Side Extension1,152
97.4%
Rear Extension1,936
96.2%
Front Extension201
96.0%
Annex89
95.5%
Outbuilding563
94.8%
Garage / Parking1,421
94.2%
Hip-to-Gable Conversion52
94.2%
Extension (General)352
94.0%
Dormer641
93.4%
Loft Conversion227
91.2%
Basement28
89.3%
New Build123
86.2%
Flat Conversion35
82.9%
Change of Use (Residential)329
79.3%
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What the data tells us

1
91.2% of loft conversion applications in Canterbury get approved. That means 20 homeowners since 2020 have been refused. Not terrible odds, but not a foregone conclusion.
3
Council averages are starting points, not guarantees. The decisions that matter most are the comparable ones near your specific property — because planning officers look at precedent, character and the immediate context of your street.

Before you spend £5,000+ on architects and drawings

20 loft conversion applications in Canterbury 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 Canterbury planning data

Methodology: Based on 227 planning decisions classified as loft conversions in Canterbury, January 2020 to present. Classification uses keyword matching against proposal descriptions (matching generate_site_data.py rules). A single application may appear in multiple categories. Approval rate = approved / (approved + refused). Pending, withdrawn and invalid applications excluded. Data from Canterbury Council's public planning portal. Full methodology →
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