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Rear Extension Approval Rates in Mid Devon

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 342 real decisions tell us about rear extension outcomes in Mid Devon.

342 real decisions·January 2020 to present·Updated June 2026
100.0%
Approval Rate
342
Decisions
342
Approved
0
Refused
100.0% approved. But 0 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 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.

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 Mid Devon.

TypeDecisionsRate
Side Extension226
100.0%
Annex128
100.0%
New Build546
100.0%
Wraparound Extension21
100.0%
Rear Extension342
100.0%
Conservatory132
100.0%
Loft Conversion28
100.0%
Dormer88
100.0%
Front Extension32
100.0%
Garage / Parking760
99.7%
Extension (General)667
99.4%
Outbuilding357
99.4%
Change of Use (Residential)567
90.5%
See how this applies to your postcode →

What the data tells us

1
100.0% of rear extension applications in Mid Devon get approved. That means 0 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

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More Mid Devon planning data

Methodology: Based on 342 planning decisions classified as rear extensions in Mid Devon, 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 Mid Devon Council's public planning portal. Full methodology →
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