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

Rear Extension Approval Rates in Isle of Wight

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 1,442 real decisions tell us about rear extension outcomes in Isle of Wight.

1,442 real decisions·January 2020 to August 2026·Updated August 2026
92.2%
Approval Rate
1,442
Decisions
1,329
Approved
113
Refused
92.2% approved. But 113 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 Isle of Wight.

TypeDecisionsRate
Wraparound Extension93
96.8%
Conservatory672
93.8%
Side Extension775
92.6%
Rear Extension1,442
92.2%
Front Extension99
90.9%
Outbuilding805
90.2%
Loft Conversion171
88.3%
Dormer464
88.1%
Extension (General)1,325
87.6%
Annex180
86.7%
Garage / Parking2,158
83.8%
Change of Use (Residential)595
82.9%
Basement76
81.6%
New Build52
76.9%
Flat Conversion44
75.0%
HMO26
65.4%
See how this applies to your postcode →

What the data tells us

1
92.2% of rear extension applications in Isle of Wight get approved. That means 113 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

113 rear extension applications in Isle of Wight 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 Isle of Wight planning data

Nearby councils rear extension data

Methodology: Based on 1,442 planning decisions classified as rear extensions in Isle of Wight, 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 Isle of Wight Council's public planning portal. Full methodology →
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