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Rear Extension Approval Rates in Harborough

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 415 real decisions tell us about rear extension outcomes in Harborough.

415 real decisions·January 2020 to present·Updated June 2026
91.1%
Approval Rate
415
Decisions
378
Approved
37
Refused
91.1% approved. But 37 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
1Kibworths55
100.0%
2Market Harborough Great Bowden And Arden55
100.0%
3Market Harborough Logan66
100.0%
4Glen55
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 Harborough.

TypeDecisionsRate
Conservatory54
94.4%
Side Extension227
93.8%
Front Extension84
91.7%
Rear Extension415
91.1%
Garage / Parking354
89.5%
Wraparound Extension45
88.9%
Extension (General)123
88.6%
Outbuilding130
88.5%
Dormer79
86.1%
Annex37
83.8%
New Build152
83.6%
Loft Conversion35
82.9%
Change of Use (Residential)142
77.5%
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What the data tells us

1
91.1% of rear extension applications in Harborough get approved. That means 37 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

37 rear extension applications in Harborough 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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More Harborough planning data

Methodology: Based on 415 planning decisions classified as rear extensions in Harborough, 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 Harborough Council's public planning portal. Full methodology →
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