Data-backed planning intelligence · 2,500,000+ decisions analysed across England

Rear Extension Approval Rates in Sandwell

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 2,809 real decisions tell us about rear extension outcomes in Sandwell.

2,809 real decisions·January 2020 to present·Updated March 2026
93.0%
Approval Rate
2,809
Decisions
2,613
Approved
196
Refused
93.0% approved. But 196 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 Sandwell: Old Warley approves 100.0% of rear extension applications while Oldbury sits at 66.7%. That 33.3% gap means your postcode is one of the strongest indicators of outcome.

Rear Extension approval rate by ward

#WardDecisionsApprovedRate
1Old Warley55
100.0%
2Tividale77
100.0%
3Newton1211
91.7%
4Bristnall1110
90.9%
5Wednesbury South87
87.5%
6Friar Park87
87.5%
7Smethwick76
85.7%
8Charlemont With Grove Vale76
85.7%
9Wednesbury North65
83.3%
10Great Barr With Yew Tree65
83.3%
11Abbey108
80.0%
12Hateley Heath1512
80.0%
13St Pauls54
80.0%
14Rowley64
66.7%
15Oldbury64
66.7%
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These are council averages. Your property is specific.

A rear extension has a 100.0% approval rate in Old Warley but just 66.7% in Oldbury.
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 Sandwell.

TypeDecisionsRate
Conservatory308
95.5%
Wraparound Extension151
94.7%
Side Extension895
93.5%
Rear Extension2,809
93.0%
Front Extension186
93.0%
Extension (General)249
91.2%
Garage / Parking361
90.3%
Loft Conversion112
90.2%
Outbuilding77
89.6%
Change of Use (Residential)311
89.1%
New Build52
88.5%
Dormer153
82.4%
See how this applies to your postcode →

What the data tells us

1
93.0% of rear extension applications in Sandwell get approved. That means 196 homeowners since 2020 have been refused. Not terrible odds, but not a foregone conclusion.
2
Your ward matters more than you think. The 33.3% gap between Old Warley (100.0%) and Oldbury (66.7%) 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

196 rear extension applications in Sandwell 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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Free instant check · Pro Report £79 · Based on 2,500,000+ real decisions

More Sandwell planning data

Nearby councils rear extension data

Methodology: Based on 2,809 planning decisions classified as rear extensions in Sandwell, 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 Sandwell Council's public planning portal. Full methodology →
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