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Rear Extension Approval Rates in Hackney

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 1,252 real decisions tell us about rear extension outcomes in Hackney.

1,252 real decisions·January 2020 to present·Updated June 2026
84.0%
Approval Rate
1,252
Decisions
1,052
Approved
200
Refused
84.0% approved. But 200 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 Hackney: Springfield Ward approves 100.0% of rear extension applications while Stamford Hill West Ward sits at 71.4%. That 28.6% gap means your postcode is one of the strongest indicators of outcome.

Rear Extension approval rate by ward

#WardDecisionsApprovedRate
1Springfield Ward55
100.0%
2Lea Bridge Ward55
100.0%
3Stoke Newington Ward65
83.3%
4Stamford Hill West Ward75
71.4%
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These are council averages. Your property is specific.

A rear extension has a 100.0% approval rate in Springfield Ward but just 71.4% in Stamford Hill West Ward.
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 Hackney.

TypeDecisionsRate
Conservatory49
89.8%
Outbuilding239
87.0%
Wraparound Extension102
86.3%
Garage / Parking182
85.7%
Side Extension346
84.4%
Rear Extension1,252
84.0%
Extension (General)423
82.3%
Dormer560
81.6%
Basement572
79.9%
Loft Conversion785
78.1%
Hip-to-Gable Conversion33
75.8%
New Build108
74.1%
Flat Conversion91
71.4%
Change of Use (Residential)293
64.5%
HMO74
55.4%
See how this applies to your postcode →

What the data tells us

1
84.0% of rear extension applications in Hackney get approved. That means 200 homeowners since 2020 have been refused. Not terrible odds, but not a foregone conclusion.
2
Your ward matters more than you think. The 28.6% gap between Springfield Ward (100.0%) and Stamford Hill West Ward (71.4%) 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

200 rear extension applications in Hackney 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 Hackney planning data

Nearby councils rear extension data

Methodology: Based on 1,252 planning decisions classified as rear extensions in Hackney, 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 Hackney Council's public planning portal. Full methodology →
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