Data-backed planning intelligence · 3,780,000+ decisions analysed across England

Rear Extension Approval Rates in Cheshire West & Chester

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 4,060 real decisions tell us about rear extension outcomes in Cheshire West & Chester.

4,060 real decisions·January 2020 to August 2026·Updated August 2026
96.9%
Approval Rate
4,060
Decisions
3,935
Approved
125
Refused
96.9% approved. But 125 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.
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 Cheshire West & Chester.

TypeDecisionsRate
Hip-to-Gable Conversion74
98.6%
Basement40
97.5%
Conservatory752
97.3%
Rear Extension4,060
96.9%
Wraparound Extension610
96.9%
Loft Conversion235
96.2%
Side Extension2,432
94.5%
Front Extension634
94.0%
Dormer652
93.1%
Flat Conversion26
92.3%
Extension (General)1,115
91.9%
Outbuilding945
91.6%
Garage / Parking2,640
91.2%
Annex167
90.4%
Change of Use (Residential)793
84.1%
HMO68
83.8%
New Build852
78.9%
See how this applies to your postcode →

What the data tells us

1
96.9% of rear extension applications in Cheshire West & Chester get approved. That means 125 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

125 rear extension applications in Cheshire West & Chester 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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Free · Property report emailed in minutes · Based on 3,780,000+ real decisions

More Cheshire West & Chester planning data

Nearby councils rear extension data

Methodology: Based on 4,060 planning decisions classified as rear extensions in Cheshire West & Chester, January 2020 to August 2026. 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 Cheshire West & Chester Council's public planning portal. Full methodology →
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