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

Rear Extension Approval Rates in Hart

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 2,121 real decisions tell us about rear extension outcomes in Hart.

2,121 real decisions·January 2020 to present·Updated March 2026
86.6%
Approval Rate
2,121
Decisions
1,836
Approved
285
Refused
86.6% approved. But 285 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 Hart: Hartley Wintney approves 100.0% of rear extension applications while East Yateley 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
1Hartley Wintney55
100.0%
2Hook55
100.0%
3Church Crookham East55
100.0%
4Fleet Central55
100.0%
5East Yateley54
80.0%
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These are council averages. Your property is specific.

A rear extension has a 100.0% approval rate in Hartley Wintney but just 80.0% in East Yateley.
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 Hart.

TypeDecisionsRate
Hip-to-Gable Conversion54
90.7%
Conservatory631
88.9%
Loft Conversion171
88.3%
Rear Extension2,121
86.6%
Side Extension1,566
85.0%
Front Extension528
83.1%
Dormer508
81.3%
Outbuilding625
80.0%
Garage / Parking2,086
79.6%
Wraparound Extension247
79.4%
Extension (General)303
76.6%
Annex63
71.4%
New Build370
69.7%
Change of Use (Residential)299
64.9%
Flat Conversion30
56.7%
See how this applies to your postcode →

What the data tells us

1
86.6% of rear extension applications in Hart get approved. That means 285 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 Hartley Wintney (100.0%) and East Yateley (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

285 rear extension applications in Hart 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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Free instant check · Pro Report £79 · Based on 2,500,000+ real decisions

More Hart planning data

Nearby councils rear extension data

Methodology: Based on 2,121 planning decisions classified as rear extensions in Hart, 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 Hart Council's public planning portal. Full methodology →
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