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Rear Extension Approval Rates in Gloucester

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 949 real decisions tell us about rear extension outcomes in Gloucester.

949 real decisions·January 2020 to present·Updated March 2026
87.1%
Approval Rate
949
Decisions
827
Approved
122
Refused
87.1% 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 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.

Ward gap in Gloucester: Longlevens approves 100.0% of rear extension applications while Abbeydale sits at 80.0%. That 20.0% gap means your postcode is one of the strongest indicators of outcome.

Rear Extension approval rate by ward

#WardDecisionsApprovedRate
1Longlevens1010
100.0%
2Abbeydale54
80.0%
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These are council averages. Your property is specific.

A rear extension has a 100.0% approval rate in Longlevens but just 80.0% in Abbeydale.
Check your postcode to see what actually happens near your address.

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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 Gloucester.

TypeDecisionsRate
Conservatory197
87.8%
Rear Extension949
87.1%
Front Extension90
86.7%
Extension (General)621
85.3%
Change of Use (Residential)283
85.2%
HMO74
83.8%
New Build234
83.3%
Outbuilding135
83.0%
Side Extension495
82.6%
Garage / Parking632
82.3%
Wraparound Extension111
82.0%
Basement21
81.0%
Loft Conversion167
73.1%
Dormer152
69.7%
Annex44
63.6%
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What the data tells us

1
87.1% of rear extension applications in Gloucester get approved. That means 122 homeowners since 2020 have been refused. Not terrible odds, but not a foregone conclusion.
2
Your ward matters more than you think. The 20.0% gap between Longlevens (100.0%) and Abbeydale (80.0%) means your postcode is one of the strongest indicators of outcome.
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 rear extension applications in Gloucester 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 Gloucester planning data

Nearby councils rear extension data

Methodology: Based on 949 planning decisions classified as rear extensions in Gloucester, 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 Gloucester Council's public planning portal. Full methodology →
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