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Rear Extension Approval Rates in Kirklees

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 5,890 real decisions tell us about rear extension outcomes in Kirklees.

5,890 real decisions·January 2020 to present·Updated March 2026
89.2%
Approval Rate
5,890
Decisions
5,256
Approved
634
Refused
89.2% approved. But 634 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.

Rear Extension approval rate by ward

#WardDecisionsApprovedRate
1Almondbury Ward55
100.0%
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These are council averages. Your property is specific.

Two houses on the same street can get different outcomes.
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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 Kirklees.

TypeDecisionsRate
Conservatory656
93.4%
Side Extension3,217
90.5%
Extension (General)3,652
89.6%
Rear Extension5,890
89.2%
Wraparound Extension705
89.1%
Garage / Parking4,007
88.4%
New Build5,386
86.1%
Front Extension900
86.1%
Annex285
84.9%
Outbuilding861
84.8%
Dormer1,464
84.3%
Change of Use (Residential)1,784
83.9%
Hip-to-Gable Conversion103
82.5%
Loft Conversion118
82.2%
Basement171
78.9%
Flat Conversion31
77.4%
HMO87
77.0%
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What the data tells us

1
89.2% of rear extension applications in Kirklees get approved. That means 634 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

634 rear extension applications in Kirklees 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 Kirklees planning data

Methodology: Based on 5,890 planning decisions classified as rear extensions in Kirklees, 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 Kirklees Council's public planning portal. Full methodology →
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