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Loft Conversion Approval Rates in Haringey

Loft conversions change your roofline — and that makes them one of the more closely scrutinised application types. Councils scrutinise visibility, overlooking and street character more closely than for ground-level work. Here's what the data shows in Haringey.

2,262 real decisions·January 2020 to present·Updated March 2026
86.2%
Approval Rate
2,262
Decisions
1,949
Approved
313
Refused
86.2% approved. But 313 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 loft conversion approval rates matter

Loft conversions face more scrutiny than rear or side extensions because they change the property's profile from the street. Dormers, mansards and hip-to-gable alterations are particularly sensitive.

These are council averages. Your property is specific.

Two houses on the same street can get different outcomes.
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How loft conversions compare to other project types

Not all applications are treated equally. Here's how loft conversions stack up against other common projects in Haringey.

TypeDecisionsRate
Conservatory274
94.5%
Wraparound Extension342
90.1%
Dormer3,431
89.5%
Outbuilding909
89.4%
Flat Conversion1,940
88.7%
Side Extension1,337
88.5%
Hip-to-Gable Conversion345
88.4%
Rear Extension4,275
88.0%
Garage / Parking1,555
87.4%
Loft Conversion2,262
86.2%
Basement1,022
85.3%
New Build1,001
84.3%
Extension (General)2,371
82.8%
Front Extension87
81.6%
Annex39
79.5%
Change of Use (Residential)1,423
78.6%
HMO503
57.9%
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What the data tells us

1
86.2% of loft conversion applications in Haringey get approved. That means 313 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

313 loft conversion applications in Haringey 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 Haringey planning data

Nearby councils loft conversion data

Methodology: Based on 2,262 planning decisions classified as loft conversions in Haringey, 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 Haringey Council's public planning portal. Full methodology →
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