Data-backed planning intelligence · 3,840,000+ decisions analysed across England, Scotland, Wales and Northern Ireland
PlanningLens

Rear Extension Approval Rates in Great Yarmouth

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 434 real decisions tell us about rear extension outcomes in Great Yarmouth.

434 real decisions·January 2020 to July 2026·Updated July 2026
93.1%
Approval Rate
434
Decisions
404
Approved
30
Refused
93.1% approved. But 30 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.

Check Planning Approval Patterns in Great Yarmouth

See your ward's approval rate and nearby planning decisions — free and instant.

Check My Postcode

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.

Check My Postcode

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 Great Yarmouth.

TypeDecisionsRate
Dormer51
94.1%
Conservatory109
93.6%
Rear Extension434
93.1%
Front Extension102
92.2%
Extension (General)175
92.0%
Side Extension247
91.9%
Wraparound Extension46
91.3%
Outbuilding137
89.1%
Loft Conversion47
87.2%
Garage / Parking419
86.6%
Change of Use (Residential)169
77.5%
New Build102
74.5%
Annex34
61.8%
Flat Conversion33
36.4%
See how this applies to your postcode →

What the data tells us

1
93.1% of rear extension applications in Great Yarmouth get approved. That means 30 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

30 rear extension applications in Great Yarmouth 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.

Check my postcode
Free · Property report emailed in minutes · Based on 3,840,000+ real decisions

More Great Yarmouth planning data

Methodology: Based on 434 planning decisions classified as rear extensions in Great Yarmouth, January 2020 to July 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 Great Yarmouth Council's public planning portal. Full methodology →
Check planning approval patterns in Great Yarmouth — Free