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Rear Extension Approval Rates in Solihull

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 1,279 real decisions tell us about rear extension outcomes in Solihull.

1,279 real decisions·January 2020 to present·Updated March 2026
93.2%
Approval Rate
1,279
Decisions
1,192
Approved
87
Refused
93.2% approved. But 87 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.

Rear Extension approval rate by ward

#WardDecisionsApprovedRate
1St Alphege1010
100.0%
2Dorridge And Hockley Heath66
100.0%
3Knowle66
100.0%
4Castle Bromwich77
100.0%
5Elmdon66
100.0%
6Bickenhill66
100.0%
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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 Solihull.

TypeDecisionsRate
Front Extension290
96.9%
Side Extension751
96.7%
Extension (General)467
95.9%
Wraparound Extension130
95.4%
Dormer235
94.9%
Loft Conversion186
94.6%
Conservatory164
94.5%
Hip-to-Gable Conversion30
93.3%
Rear Extension1,279
93.2%
Garage / Parking773
92.9%
Outbuilding176
92.0%
Annex37
86.5%
New Build122
83.6%
Change of Use (Residential)152
81.6%
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What the data tells us

1
93.2% of rear extension applications in Solihull get approved. That means 87 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

87 rear extension applications in Solihull 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 Solihull planning data

Nearby councils rear extension data

Methodology: Based on 1,279 planning decisions classified as rear extensions in Solihull, 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 Solihull Council's public planning portal. Full methodology →
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