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Rear Extension Approval Rates in Castle Point

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 1,126 real decisions tell us about rear extension outcomes in Castle Point.

1,126 real decisions·January 2020 to September 2026·Updated September 2026
86.1%
Approval Rate
1,126
Decisions
970
Approved
156
Refused
86.1% approved. But 156 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 Castle Point.

TypeDecisionsRate
Conservatory242
92.1%
Front Extension181
88.4%
Annex24
87.5%
Side Extension605
87.1%
Garage / Parking543
86.4%
Rear Extension1,126
86.1%
Dormer426
84.5%
Outbuilding95
80.0%
Extension (General)115
80.0%
Hip-to-Gable Conversion120
80.0%
Loft Conversion264
79.5%
Wraparound Extension34
79.4%
New Build22
68.2%
Change of Use (Residential)65
56.9%
See how this applies to your postcode →

What the data tells us

1
86.1% of rear extension applications in Castle Point get approved. That means 156 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

156 rear extension applications in Castle Point 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 3,840,000+ real decisions

More Castle Point planning data

Methodology: Based on 1,126 planning decisions classified as rear extensions in Castle Point, January 2020 to September 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 Castle Point Council's public planning portal. Full methodology →
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