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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.

233 real decisions·January 2020 to August 2026·Updated August 2026
91.4%
Approval Rate
233
Decisions
213
Approved
20
Refused
91.4% 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 Extension250
98.4%
Conservatory443
98.4%
Side Extension1,221
97.3%
Rear Extension2,049
96.3%
Annex98
95.9%
Front Extension212
95.8%
Outbuilding604
94.7%
Extension (General)373
94.4%
Hip-to-Gable Conversion54
94.4%
Garage / Parking1,513
94.3%
Dormer669
93.7%
Loft Conversion233
91.4%
Basement31
90.3%
New Build125
86.4%
Flat Conversion38
84.2%
Change of Use (Residential)363
80.2%
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What the data tells us

1
91.4% 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 233 planning decisions classified as loft conversions in Canterbury, January 2020 to August 2026. 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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