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

Rear Extension Approval Rates in Selby

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 789 real decisions tell us about rear extension outcomes in Selby.

789 real decisions·January 2020 to present·Updated March 2026
91.4%
Approval Rate
789
Decisions
721
Approved
68
Refused
91.4% approved. But 68 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.

Ward gap in Selby: Selby West approves 100.0% of rear extension applications while Sherburn In Elmet sits at 80.0%. That 20.0% gap means your postcode is one of the strongest indicators of outcome.

Rear Extension approval rate by ward

#WardDecisionsApprovedRate
1Selby West66
100.0%
2Monk Fryston And South Milford54
80.0%
3Sherburn In Elmet54
80.0%
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These are council averages. Your property is specific.

A rear extension has a 100.0% approval rate in Selby West but just 80.0% in Sherburn In Elmet.
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 Selby.

TypeDecisionsRate
Front Extension111
91.9%
Conservatory207
91.8%
Rear Extension789
91.4%
Wraparound Extension70
91.4%
Side Extension445
91.2%
Extension (General)650
87.7%
Loft Conversion83
86.7%
Garage / Parking975
85.3%
Dormer183
80.9%
Outbuilding352
80.4%
Annex90
78.9%
New Build614
76.4%
Change of Use (Residential)450
69.6%
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What the data tells us

1
91.4% of rear extension applications in Selby get approved. That means 68 homeowners since 2020 have been refused. Not terrible odds, but not a foregone conclusion.
2
Your ward matters more than you think. The 20.0% gap between Selby West (100.0%) and Sherburn In Elmet (80.0%) means your postcode is one of the strongest indicators of outcome.
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

68 rear extension applications in Selby 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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More Selby planning data

Nearby councils rear extension data

Methodology: Based on 789 planning decisions classified as rear extensions in Selby, 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 Selby Council's public planning portal. Full methodology →
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