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Rear Extension Approval Rates in Tameside

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 958 real decisions tell us about rear extension outcomes in Tameside.

958 real decisions·January 2020 to present·Updated March 2026
84.9%
Approval Rate
958
Decisions
813
Approved
145
Refused
84.9% approved. But 145 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 Tameside: Ashton-under-Lyne St Michaels approves 100.0% of rear extension applications while Ashton-Under-Lyne Waterloo sits at 50.0%. That 50.0% gap means your postcode is one of the strongest indicators of outcome.

Rear Extension approval rate by ward

#WardDecisionsApprovedRate
1Ashton-under-Lyne St Michaels55
100.0%
2Hyde Werneth76
85.7%
3Droylsden West86
75.0%
4Ashton-Under-Lyne Hurst118
72.7%
5Stalybridge South75
71.4%
6Denton West96
66.7%
7Audenshaw85
62.5%
8Denton North East74
57.1%
9Ashton-Under-Lyne Waterloo63
50.0%
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These are council averages. Your property is specific.

A rear extension has a 100.0% approval rate in Ashton-under-Lyne St Michaels but just 50.0% in Ashton-Under-Lyne Waterloo.
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 Tameside.

TypeDecisionsRate
Conservatory110
93.6%
Garage / Parking353
88.4%
Outbuilding75
88.0%
New Build106
87.7%
Wraparound Extension106
87.7%
Change of Use (Residential)145
87.6%
Hip-to-Gable Conversion22
86.4%
Side Extension619
85.9%
Rear Extension958
84.9%
Front Extension110
84.5%
Loft Conversion101
83.2%
Extension (General)236
80.9%
Dormer174
79.9%
HMO30
70.0%
See how this applies to your postcode →

What the data tells us

1
84.9% of rear extension applications in Tameside get approved. That means 145 homeowners since 2020 have been refused. Not terrible odds, but not a foregone conclusion.
2
Your ward matters more than you think. The 50.0% gap between Ashton-under-Lyne St Michaels (100.0%) and Ashton-Under-Lyne Waterloo (50.0%) 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

145 rear extension applications in Tameside 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 Tameside planning data

Nearby councils rear extension data

Methodology: Based on 958 planning decisions classified as rear extensions in Tameside, 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 Tameside Council's public planning portal. Full methodology →
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