Data-backed planning intelligence · 3,780,000+ decisions analysed across England

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 3,686 real decisions tell us about rear extension outcomes in Warwick.

3,686 real decisions·January 2020 to August 2026·Updated August 2026
93.7%
Approval Rate
3,686
Decisions
3,455
Approved
231
Refused
93.7% approved. But 231 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 Extension590
95.8%
Hip-to-Gable Conversion162
95.1%
Conservatory355
94.4%
Loft Conversion377
94.2%
Rear Extension3,686
93.7%
Front Extension674
93.0%
Side Extension2,029
92.2%
Dormer783
91.1%
Basement226
90.7%
Outbuilding697
89.7%
Garage / Parking1,721
86.6%
Extension (General)637
85.7%
Annex76
82.9%
New Build1,002
80.3%
Change of Use (Residential)621
79.7%
HMO178
77.5%
Flat Conversion23
60.9%
See how this applies to your postcode →

What the data tells us

1
93.7% of rear extension applications in Warwick get approved. That means 231 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

231 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 3,780,000+ real decisions

More Warwick planning data

Nearby councils rear extension data

Methodology: Based on 3,686 planning decisions classified as rear extensions in Warwick, January 2020 to August 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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