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Rear Extension Approval Rates in Derbyshire Dales

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 277 real decisions tell us about rear extension outcomes in Derbyshire Dales.

277 real decisions·January 2020 to present·Updated June 2026
92.1%
Approval Rate
277
Decisions
255
Approved
22
Refused
92.1% approved. But 22 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.

Check Planning Approval Patterns in Derbyshire Dales

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Why rear extension approval rates matter

Rear extensions sit in the middle of the pack nationally. They're common enough that councils have clear precedent — but that cuts both ways. If your neighbours have been refused, that precedent works against you too.

Rear Extension approval rate by ward

#WardDecisionsApprovedRate
1Wirksworth55
100.0%
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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 rear extensions compare to other project types

Not all applications are treated equally. Here's how rear extensions stack up against other common projects in Derbyshire Dales.

TypeDecisionsRate
Conservatory112
93.8%
Side Extension192
93.2%
Extension (General)555
93.0%
Outbuilding157
92.4%
Rear Extension277
92.1%
Front Extension44
90.9%
Garage / Parking391
89.0%
Change of Use (Residential)164
88.4%
New Build182
85.7%
Dormer69
85.5%
Loft Conversion21
76.2%
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What the data tells us

1
92.1% of rear extension applications in Derbyshire Dales get approved. That means 22 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

22 rear extension applications in Derbyshire Dales 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 Derbyshire Dales planning data

Methodology: Based on 277 planning decisions classified as rear extensions in Derbyshire Dales, 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 Derbyshire Dales Council's public planning portal. Full methodology →
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