Data-backed planning intelligence · 2,500,000+ decisions analysed across England

Rear Extension Approval Rates in North Norfolk

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 230 real decisions tell us about rear extension outcomes in North Norfolk.

230 real decisions·January 2020 to present·Updated March 2026
97.0%
Approval Rate
230
Decisions
223
Approved
7
Refused
97.0% approved. But 7 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 North Norfolk.

TypeDecisionsRate
Extension (General)161
98.8%
Dormer70
97.1%
Rear Extension230
97.0%
Outbuilding181
96.7%
Garage / Parking326
95.7%
Side Extension120
95.0%
Annex70
94.3%
Conservatory48
93.8%
New Build135
92.6%
Front Extension34
91.2%
Change of Use (Residential)120
85.8%
See how this applies to your postcode →

What the data tells us

1
97.0% of rear extension applications in North Norfolk get approved. That means 7 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

7 rear extension applications in North Norfolk 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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Free instant check · Pro Report £79 · Based on 2,500,000+ real decisions

More North Norfolk planning data

Nearby councils rear extension data

Methodology: Based on 230 planning decisions classified as rear extensions in North Norfolk, 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 North Norfolk Council's public planning portal. Full methodology →
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