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Loft Conversion Approval Rates in Sevenoaks

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 Sevenoaks.

478 real decisions·January 2020 to present·Updated March 2026
81.8%
Approval Rate
478
Decisions
391
Approved
87
Refused
81.8% approved. But 87 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 Sevenoaks.

TypeDecisionsRate
Conservatory412
90.0%
Wraparound Extension168
89.3%
Front Extension237
88.6%
Rear Extension1,735
87.7%
Side Extension958
87.2%
Extension (General)639
83.7%
Outbuilding851
82.5%
Basement90
82.2%
Dormer752
81.9%
Loft Conversion478
81.8%
Garage / Parking1,861
81.6%
Hip-to-Gable Conversion72
80.6%
Change of Use (Residential)343
74.1%
Annex152
73.7%
Flat Conversion41
73.2%
New Build458
71.8%
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What the data tells us

1
81.8% of loft conversion applications in Sevenoaks get approved. That means 87 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

87 loft conversion applications in Sevenoaks have been refused since 2020. Many of those homeowners had already paid for drawings and application fees. A £79 report shows you what gets approved — and what gets refused — near your property.

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More Sevenoaks planning data

Nearby councils loft conversion data

Methodology: Based on 478 planning decisions classified as loft conversions in Sevenoaks, 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 Sevenoaks Council's public planning portal. Full methodology →
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