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Rear Extension Approval Rates in Telford & Wrekin

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 2,582 real decisions tell us about rear extension outcomes in Telford & Wrekin.

2,582 real decisions·January 2020 to present·Updated May 2026
95.2%
Approval Rate
2,582
Decisions
2,457
Approved
125
Refused
95.2% 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.

Ward gap in Telford & Wrekin: Wrockwardine approves 85.7% of rear extension applications while Ercall sits at 80.0%. That 5.7% gap means your postcode is one of the strongest indicators of outcome.

Rear Extension approval rate by ward

#WardDecisionsApprovedRate
1Wrockwardine76
85.7%
2Hadley and Leegomery65
83.3%
3Ercall54
80.0%
See how this applies to your postcode →

These are council averages. Your property is specific.

A rear extension has a 85.7% approval rate in Wrockwardine but just 80.0% in Ercall.
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 Telford & Wrekin.

TypeDecisionsRate
Extension (General)727
96.0%
Wraparound Extension723
95.9%
Conservatory446
95.3%
Rear Extension2,582
95.2%
Side Extension2,217
95.0%
Loft Conversion99
94.9%
Front Extension446
92.8%
Outbuilding626
91.7%
Garage / Parking2,755
91.2%
HMO55
90.9%
Change of Use (Residential)1,294
90.7%
Dormer256
90.6%
Annex209
88.5%
New Build2,264
86.0%
Flat Conversion42
85.7%
See how this applies to your postcode →

What the data tells us

1
95.2% of rear extension applications in Telford & Wrekin get approved. That means 125 homeowners since 2020 have been refused. Not terrible odds, but not a foregone conclusion.
2
Your ward matters more than you think. The 5.7% gap between Wrockwardine (85.7%) and Ercall (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

125 rear extension applications in Telford & Wrekin 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-specific PDF · Based on 2,650,000+ real decisions

More Telford & Wrekin planning data

Methodology: Based on 2,582 planning decisions classified as rear extensions in Telford & Wrekin, 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 Telford & Wrekin Council's public planning portal. Full methodology →
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