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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.

841 real decisions·January 2020 to August 2026·Updated August 2026
84.2%
Approval Rate
841
Decisions
708
Approved
133
Refused
84.2% approved. But 133 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 Epsom & Ewell.

TypeDecisionsRate
Conservatory335
90.1%
Wraparound Extension283
89.0%
Outbuilding371
88.7%
Hip-to-Gable Conversion395
88.4%
Rear Extension2,395
87.4%
Side Extension1,187
87.3%
Front Extension348
86.8%
Garage / Parking1,544
86.3%
Extension (General)318
84.6%
Loft Conversion841
84.2%
Annex50
84.0%
Dormer856
83.8%
New Build208
78.4%
Basement36
77.8%
Change of Use (Residential)211
73.9%
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 133 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

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

Nearby councils loft conversion data

Methodology: Based on 841 planning decisions classified as loft conversions in Epsom & Ewell, 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 Epsom & Ewell Council's public planning portal. Full methodology →
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