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Rear Extension Approval Rates in Warwick

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 3,750 real decisions tell us about rear extension outcomes in Warwick.

3,750 real decisions·January 2020 to October 2026·Updated October 2026
93.8%
Approval Rate
3,750
Decisions
3,518
Approved
232
Refused
93.8% approved. But 232 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 Warwick.

TypeDecisionsRate
Wraparound Extension605
95.9%
Hip-to-Gable Conversion164
95.1%
Loft Conversion383
94.3%
Conservatory365
94.2%
Rear Extension3,750
93.8%
Front Extension685
93.0%
Side Extension2,068
92.3%
Dormer797
91.2%
Basement230
90.9%
Outbuilding709
89.8%
Garage / Parking1,753
86.7%
Extension (General)643
85.7%
Annex77
83.1%
New Build1,020
80.7%
Change of Use (Residential)639
79.7%
HMO181
77.3%
Flat Conversion23
60.9%
See how this applies to your postcode →

What the data tells us

1
93.8% of rear extension applications in Warwick get approved. That means 232 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

232 rear extension applications in Warwick 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 3,850,000+ real decisions

More Warwick planning data

Nearby councils rear extension data

Methodology: Based on 3,750 planning decisions classified as rear extensions in Warwick, January 2020 to October 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 Warwick Council's public planning portal. Full methodology →
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