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Loft Conversion Approval Rates in Epsom & Ewell

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 Epsom & Ewell.

774 real decisions·January 2020 to present·Updated March 2026
84.2%
Approval Rate
774
Decisions
652
Approved
122
Refused
84.2% approved. But 122 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.

Loft Conversion approval rate by ward

#WardDecisionsApprovedRate
1Ewell Village53
60.0%
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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 Epsom & Ewell.

TypeDecisionsRate
Wraparound Extension254
90.2%
Conservatory308
89.9%
Outbuilding338
89.1%
Hip-to-Gable Conversion365
88.5%
Front Extension322
87.6%
Rear Extension2,239
87.5%
Side Extension1,125
87.2%
Garage / Parking1,430
86.6%
Extension (General)305
84.9%
Annex45
84.4%
Loft Conversion774
84.2%
Dormer789
83.5%
Basement33
81.8%
New Build203
78.3%
Change of Use (Residential)197
73.6%
Flat Conversion39
69.2%
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What the data tells us

1
84.2% of loft conversion applications in Epsom & Ewell get approved. That means 122 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

122 loft conversion applications in Epsom & Ewell 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 Epsom & Ewell planning data

Nearby councils loft conversion data

Methodology: Based on 774 planning decisions classified as loft conversions in Epsom & Ewell, 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 Epsom & Ewell Council's public planning portal. Full methodology →
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