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Rear Extension Approval Rates in Cannock Chase

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 483 real decisions tell us about rear extension outcomes in Cannock Chase.

483 real decisions·January 2020 to present·Updated March 2026
95.2%
Approval Rate
483
Decisions
460
Approved
23
Refused
95.2% approved. But 23 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 Cannock Chase: Heath Hayes & Wimblebury approves 100.0% of rear extension applications while Etching HIll & the Heath sits at 83.3%. That 16.7% gap means your postcode is one of the strongest indicators of outcome.

Rear Extension approval rate by ward

#WardDecisionsApprovedRate
1Heath Hayes & Wimblebury66
100.0%
2Hednesford Pye Green88
100.0%
3Cannock Park & Old Fallow99
100.0%
4Etching HIll & the Heath65
83.3%
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These are council averages. Your property is specific.

A rear extension has a 100.0% approval rate in Heath Hayes & Wimblebury but just 83.3% in Etching HIll & the Heath.
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 Cannock Chase.

TypeDecisionsRate
Conservatory55
98.2%
Extension (General)192
96.4%
Outbuilding65
95.4%
Rear Extension483
95.2%
Side Extension318
93.7%
Wraparound Extension38
89.5%
Garage / Parking309
86.1%
Annex33
84.8%
Front Extension52
82.7%
Dormer53
81.1%
Loft Conversion45
80.0%
Change of Use (Residential)194
79.9%
New Build106
77.4%
See how this applies to your postcode →

What the data tells us

1
95.2% of rear extension applications in Cannock Chase get approved. That means 23 homeowners since 2020 have been refused. Not terrible odds, but not a foregone conclusion.
2
Your ward matters more than you think. The 16.7% gap between Heath Hayes & Wimblebury (100.0%) and Etching HIll & the Heath (83.3%) 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

23 rear extension applications in Cannock Chase 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 Cannock Chase planning data

Nearby councils rear extension data

Methodology: Based on 483 planning decisions classified as rear extensions in Cannock Chase, 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 Cannock Chase Council's public planning portal. Full methodology →
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