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Rear Extension Approval Rates in Fenland

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 316 real decisions tell us about rear extension outcomes in Fenland.

316 real decisions·January 2020 to present·Updated June 2026
93.0%
Approval Rate
316
Decisions
294
Approved
22
Refused
93.0% 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.

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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
1Doddington And Wimblington55
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 Fenland.

TypeDecisionsRate
Front Extension35
94.3%
Side Extension174
93.1%
Dormer29
93.1%
Rear Extension316
93.0%
New Build110
92.7%
Conservatory109
91.7%
Extension (General)201
91.0%
Garage / Parking642
88.6%
Outbuilding270
87.4%
Annex104
85.6%
Change of Use (Residential)392
84.4%
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What the data tells us

1
93.0% of rear extension applications in Fenland 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 Fenland 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 Fenland planning data

Methodology: Based on 316 planning decisions classified as rear extensions in Fenland, 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 Fenland Council's public planning portal. Full methodology →
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