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Rear Extension Approval Rates in Kingston upon Hull

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 1,153 real decisions tell us about rear extension outcomes in Kingston upon Hull.

1,153 real decisions·January 2020 to September 2026·Updated September 2026
90.9%
Approval Rate
1,153
Decisions
1,048
Approved
105
Refused
90.9% approved. But 105 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 Kingston upon Hull.

TypeDecisionsRate
Conservatory154
93.5%
Rear Extension1,153
90.9%
Extension (General)498
89.2%
Wraparound Extension72
88.9%
Side Extension401
88.5%
Hip-to-Gable Conversion39
87.2%
HMO364
87.1%
Change of Use (Residential)719
86.0%
Front Extension50
86.0%
Dormer192
84.9%
New Build377
83.8%
Garage / Parking638
83.5%
Outbuilding174
83.3%
Annex23
82.6%
Loft Conversion91
82.4%
Flat Conversion85
81.2%
See how this applies to your postcode →

What the data tells us

1
90.9% of rear extension applications in Kingston upon Hull get approved. That means 105 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

105 rear extension applications in Kingston upon Hull 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 Kingston upon Hull planning data

Nearby councils rear extension data

Methodology: Based on 1,153 planning decisions classified as rear extensions in Kingston upon Hull, 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 Kingston upon Hull Council's public planning portal. Full methodology →
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